2010 Mercedes-benz M Class Owners Manual

Steering and braking requires significantly more effort and you could lose control of the vehicle and cause an accident as a result. Do not turn off the engine while the vehicle is in motion.

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Driving instructions

245

Brakes Downhill grades ! When driving down long and steep

grades, relieve the load on the brakes by shifting into a lower gear to use the engine’s braking power. This helps prevent overheating of the brakes and reduces wear. When using the engine’s braking power, a drive wheel may not spin for an extended period of time, e.g. on slippery road surfaces. This may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty.

Continuous or hard braking G Warning! Resting your foot on the brake pedal will cause excessive and premature wear of the brake pads. It can also result in the brakes overheating, thereby significantly reducing their effectiveness. It may not be possible to stop the vehicle in sufficient time to avoid an accident. After hard braking, it is advisable to drive on for some time, rather than immediately park, so that the air stream will cool down the brakes faster.

Wet roads G Warning! After driving in heavy rain for some time without applying the brakes or through water deep enough to wet brake components, the first braking action may be somewhat reduced and increased pedal pressure may be necessary to obtain expected brake effect. Maintain a safe distance from vehicles in front. To help prevent brake disk corrosion after driving on wet or salt-covered roads, it is advisable to brake the vehicle with

considerable force prior to parking. The heat generated serves to dry the brakes.

Salt-covered roads G Warning! A layer of salt on the brake discs and the brake linings may cause a delay in the braking effect, resulting in a significantly increased braking distance, which could lead to an accident. To avoid this danger, you should: Roccasionally brake carefully when you are driving on salt-covered roads, so that any layer of salt that may have built up on the brake discs and the brake linings is removed without putting other road users at risk

Rmaintain a greater distance to the vehicle

ahead and drive with particular care

Rcarefully apply the brakes at the end of a trip and immediately after commencing a new trip, so that salt residues are removed from the brake disc

Brake service ! The brake fluid level in the reservoir may be too low if the brake warning lamp in the instrument cluster comes on and an acoustic warning sounds although the parking brake is released. Observe additional messages in the multifunction display that may appear. Brake pad wear or a leak in the system may be the reason for low brake fluid in the reservoir. Have the brake system inspected immediately. Contact an authorized Mercedes-Benz Center.

All checks and service work on the brake system should be carried out by qualified technicians only. Contact an authorized Mercedes-Benz Center.

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246 Driving instructions

Only install brake pads and use brake fluid recommended by Mercedes-Benz. G Warning! If other than recommended brake pads are installed, or other than recommended brake fluid is used, the braking properties of the vehicle can be degraded to an extent that safe braking is substantially impaired. This could result in an accident.

! Vehicles with 4MATIC:

Only conduct operational or performance tests on a two-axle dynamometer. If such tests are necessary, contact an authorized Mercedes-Benz Center. You could otherwise seriously damage the brake system or the transfer case which is not covered by the Mercedes-Benz Limited Warranty.

! Vehicles without 4MATIC:

Because the ESP® operates automatically, the engine and ignition must be shut off (SmartKey in starter switch position 0 or 1 or KEYLESS-GO start/stop button in position 0 or 1) when the parking brake is being tested on a brake test dynamometer or the vehicle is being towed with one axle raised. Active braking action through the ESP® may otherwise seriously damage the brake system which is not covered by the Mercedes-Benz Limited Warranty.

! Vehicles with 4MATIC:

Because the ESP® operates automatically, the engine and ignition must be shut off (SmartKey in starter switch position 0 or 1 or KEYLESS-GO start/stop button in position 0 or 1) when the parking brake is being tested on a brake test dynamometer. Such testing should be no longer than 10
seconds. Active braking action through the ESP® may otherwise seriously damage the brake

system which is not covered by the Mercedes-Benz Limited Warranty.

If your brake system is only subjected to moderate loads, you should occasionally test the effectiveness of the brakes by applying above-normal braking pressure at higher speeds. This will also enhance the grip of the brake pads. G Warning! Make sure not to endanger any other road users when carrying out these braking maneuvers. Refer to the description of the Brake Assist System (BAS) (Y page 63).

High-performance brake system The high-performance brake system is only available on ML 63 AMG. G Warning! New vehicle brake pads and disks, and replacement brake pads and disks may take several hundred miles of driving until they provide optimum braking efficiency. Until that time, you may need to use increased brake pedal pressure while braking. Please be aware of this and adjust your driving and braking accordingly during this break-in period. Excessive high-demand braking will cause correspondingly high brake wear. Please be attentive to the brake warning lamp in the instrument cluster and brake condition messages in the multifunction display. Especially for high-performance driving, it is important to maintain and have the brake system checked regularly. The high-performance brake system is designed to operate under the extremely high operating demands required to accommodate the performance capabilities of the vehicle.

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The brakes may produce a squeaking-type noise depending on the Rvehicle speed Rbrake force applied Rambient conditions, e.g. temperature and

humidity

As with any brake system, the wear of individual brake system components such as brake pads or disks strongly depends on your driving style and the conditions under which you operate the vehicle. Thus, a driving style calling for high-demand braking will cause your vehicle’s brakes to wear more quickly.

Parking brake When driving on wet roads or dirt covered surfaces, road salt and/or dirt can get into the parking brake. To prevent corrosion and a reduction in the braking power of the parking brake, observe the following: X From time to time, lightly engage the

parking brake before driving off.

X Drive a distance of approximately 110 yds

(100 m) at a maximum speed of 12 mph (20 km/h). G Warning! While performing this procedure please assure that the vehicle is stopped before applying the parking brake. Otherwise the rear wheels could lock up. You could lose control of the vehicle and cause an accident. In addition, the vehicle’s brake lights do not light up when the parking brake is engaged. Make sure not to endanger any other road users when you engage the parking brake.

Driving off Warm up the engine smoothly. Do not place full load on the engine until the operating temperature has been reached.

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247

! When driving off on a slippery surface, do

not allow a drive wheel to spin for an extended period with the ESP® switched off. Doing so may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty.

! Simultaneously depressing the

accelerator pedal and applying the brakes reduces engine performance and causes premature brake and drivetrain wear which is not covered by the Mercedes-Benz Limited Warranty.

Hydroplaning Depending on the depth of the water layer on the road, hydroplaning may occur, even at low speeds and with new tires. In heavy rain or when conditions indicate possible hydroplaning: X Reduce vehicle speed. X Avoid track grooves in the road. X Apply brakes cautiously.

Standing water ! Do not drive through flooded areas.

Before driving through water, determine its depth. If you must drive through standing water, drive slowly to prevent water from entering the passenger compartment or the engine compartment. Water in these areas could cause damage to electrical components or wiring of the engine or transmission, or could result in water being ingested by the engine through the air intake causing severe internal engine damage. Any such damage is not covered by the Mercedes- Benz Limited Warranty.

i Vehicles with air suspension program:

Select the raised level (Y page 156) before driving through standing water.

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248 Driving instructions

Familiarize yourself with the vehicle characteristics and gear changing before you attempt any difficult terrain off-road driving. We recommend that you start out with easy off-road travel.

Special driving features for off-road driving The following driving features are available for specific kind of operation: ROff-road ABS (Y page 63) ROff-road ESP® (Y page 65) ROff-road 4-ETS (Y page 64) RHill-start assist system (Y page 113) RDownhill Speed Regulation (DSR)

(Y page 152)

ROff-road driving program (Y page 155) RAir suspension program (Y page 155)

Off-road driving rules REngage the off-road driving program

(Y page 155) before driving under off-road conditions.

RVehicles with air suspension program:

Make sure you select a vehicle level (Y page 156) appropriate to the topographical conditions. Always make sure the vehicle has enough ground clearance.

RFasten items being carried as securely as

possible (Y page 186).

RAlways navigate gradients with the engine on and with the transmission engaged in a gear. Switch on the DSR (Y page 152) to help maintain a preset speed.

For more information, see “Driving through water” (Y page 251).

Off-road driving G Warning! Do not load items on the basic carrier bars. It may cause instability during some maneuvers which could result in an accident. Drive slowly in unknown terrain. This will make it easier to recognize unexpected obstacles and avoid damage to the vehicle. To help avoid the vehicle rolling over, never turn it around on steep inclines. If the vehicle cannot complete the attempted climb, back it down in reverse gear. Do not drive along the side of a slope. The vehicle might otherwise rollover. If in doing so the vehicle begins to show a tendency to roll, immediately steer into a line of gravity (straight up or downhill). Never let the vehicle roll backwards in idle. You may lose control of the vehicle if you use only the service brake. For information on driving downhill, see “Driving downhill”. G Warning! Sand, dirt, mud and other material having friction property can cause exceptional wear and tear as well as brake failure. Have the brakes checked for dirt build-up and cleaned. There is otherwise a risk that full braking power may not be available in an emergency. G Warning! Vehicles with air suspension program: Please be aware that by raising the vehicle level, the center of gravity also rises. Therefore, always ensure that the vehicle level is as low as possible. With higher ride height the ESP® may activate earlier in certain situations. Read this chapter carefully before you begin off-road travel.

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! Observe the following during off-road

driving: RKeep doors, tailgate, windows, and tilt/ sliding sunroof closed whenever driving off-road.

RAdjust vehicle speed to condition of terrain. The more uneven, rutty and steeper the terrain, the lower the speed should be. Drive through water slowly at an even speed, avoiding a bow wave. RBe especially careful when driving in

unknown territory. It may be necessary to get out of the vehicle and scout the path you intend to take.

RWatch out for obstacles, such as rocks,

holes, tree stumps and ruts.

RBefore driving through water, determine

its depth.

RDo not stop vehicle while immersed in water, and do not shut off the engine.

RIn sandy soil, drive at a steady speed as

allowed by conditions. This helps overcome the vehicle rolling resistance and reduces the likelihood of the vehicle sinking into the ground.

RDo not initiate jumps with the vehicle. It interrupts the forward momentum of the vehicle.

RAlways drive onto slopes with the engine

running and the vehicle in gear.

RDo not shift automatic transmission into

neutral position N.

G Warning! Do not reduce the tire inflation pressure before driving through sand. However, if you do so, remember to correct the tire inflation pressure before continuing your trip. Driving with reduced tire inflation pressure increases the risk of losing control of the vehicle and rolling over.

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249

Checklist before off-road driving Engine oil level RCheck the engine oil level (Y page 214).

Only with a proper oil level can the vehicle obtain a trouble-free oil supply, even on steep gradients.

! If the engine oil level warning lamp comes on while driving, stop the vehicle in a safe location or as soon at is safe to do so. Check the engine oil level. The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.

Tires RCheck the tread depth and maintain

specified tire inflation pressure. A placard with the recommended tire inflation pressures is located on the driver’s door B- pillar (Y page 228).

RCheck tires for possible damage and

remove foreign objects.

RReplace missing valve caps.

Rims RDented or bent rims can cause tire inflation pressure loss and damage the tire beads. For this reason, check and, if necessary, change rims before driving off-road.

Vehicle tool kit RCheck if the jack (Y page 270) is

functional.

RAlways take the vehicle tool kit, a strong

tow rope, a shovel and a small plank (to put under the jack on sandy soil) with you.

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250 Driving instructions

Driving in steep terrain

Slope angle : Overhang angle, front ; Overhang angle, rear Vehicles with steel suspension

:21 ;

27°

22°

26°

:21 ;

31° 25°

25° 18°

26° 21°

29° 24°

28° 24°

Vehicles with air suspension program Raised level Highway

ML 63 AMG Raised level Highway

RComply with the warnings (Y page 248) and

rules for off-road driving (Y page 248).

RDriving on embankments, slopes and other steep inclines should only be done straight up or downhill, i.e. in the line of gravity. Maximum vehicle climbing ability is a 100% grade which is equivalent to a slope angle of 45°. Keep in mind that the

21 Vehicles with AMG Sport-Package

climbing ability of the vehicle depends on terrain conditions.

RShift automatic transmission into gear

range 1 (Y page 113).

RDrive slowly. RAvoid excessive engine speeds – drive with moderate engine speeds (max. 3 000 rpm).

RUtilize the engine’s braking power when descending a slope, observe the engine speed (do not overrev the engine). Apply the service brake as needed.

i For maximum engine speed, see

“Tachometer” (Y page 119) and see vehicle specification for your vehicle (Y page 348).

RCheck the brakes after a lengthy

downgrade drive. G Warning! Never turn the vehicle around on steep inclines. The vehicle might roll over. If the vehicle cannot complete the attempted climb, back it down in reverse gear.

i The hill-start assist system supports you

when driving uphill. For more information, see “Hill-start assist system” (Y page 152). Traction in steep terrain The maximum vehicle climbing ability is a 100% grade which is equivalent to a slope angle of 45°. Keep in mind that the climbing ability of the vehicle depends on terrain conditions. Be easy on the accelerator and watch for continuous wheel traction when driving in steep terrain. i The 4-ETS helps greatly when starting out

on a steep incline when the front wheels have then the tendency to slip due to the weight shifting towards the rear axle.

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The 4-ETS recognizes the situation and limits the torque for the front wheels by braking them. Simultaneously the torque for the rear wheels is increased.

Driving across a hilltop Decelerate just ahead of a hilltop (do not shift automatic transmission into neutral position N), to prevent the vehicle from speeding up too much after climbing a hill. Use the momentum of the vehicle to drive across the hilltop. After climbing a hill, driving in this manner prevents the vehicle from: Rlosing ground contact when cresting hills Rlosing its forward momentum Rspeeding up too much after climbing the hill

Driving downhill RDrive slowly. RDo not drive at an angle to the incline. Steer

into the line of gravity and drive with the front wheels pointing straight downhill. Otherwise, the vehicle may slide sideways off the path and roll over.

RShift automatic transmission into gear

range 1 (Y page 113).

ROn steep inclines, use the Downhill Speed

Regulation (Y page 152).

RUtilize the engine’s braking power to

reduce vehicle speed. If this is insufficient, apply the brakes gently. Make sure the vehicle is moving in the line of gravity.

RCheck the brakes after a lengthy

downgrade drive.

i The special Off-road ABS (Y page 63)

setting allows for precise and brief (cyclical) blocking of the front wheels, permitting them to dig into loose ground.

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251

Remember that, when stopped, the front wheels slide across a surface and thus lose their ability to steer the vehicle.

Driving through water

: Fording depth Vehicles with steel suspension or air suspension program (raised level)

20 in (50 cm)

RBefore driving through water, determine its

depth.

! The water depth must not exceed the respective value listed in the table. The ground under the water might not be firm which could result the water being deeper than expected when driving the vehicle through it. Please note that the water level is correspondingly lower for flowing water.

RVehicles with air suspension program:

Select the highest vehicle level possible (Y page 156).

RSwitch to off-road driving program

(Y page 155) before driving through water.

RShift automatic transmission into gear

range 1 or 2 (Y page 113). RAvoid high engine speeds. REnter and leave the water only at a shallow

spot, driving at walking speed.

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252 Driving instructions

! Never accelerate before driving into the water. The bow wave could force water into the engine and auxiliary equipment, thus damaging them.

RDrive through the water slowly and at a

constant speed.

RDo not stop vehicle while immersed in water, and do not shut off the engine.

! Do not open any of the vehicle’s doors while driving through water. Water could otherwise enter the vehicle interior and damage the vehicle’s electronics, as well as the interior equipment.

RThere is a very high level of driving

resistance in water. The surface is slippery and may not be firm, making pulling away in water difficult and dangerous.

RMake sure that only small bow waves are formed when driving the vehicle through water.

RClean mud off the tire tread after driving

through water.

RTo dry the brakes, apply pressure to the brake pedal several times while driving after leaving the water.

Crossing obstacles

! Obstacles can damage the vehicle

underbody or suspension components. If possible use the assistance of a second person outside the vehicle to scout the path you intend to take and check for

adequate ground clearance when you cross obstacles with your vehicle. The person assisting you outside the vehicle should always be a safe distance away from the vehicle and positioned so that he or she cannot get hurt in case of any unexpected vehicle movement. After off-road driving or crossing obstacles, inspect vehicle for any damage, especially vehicle underbody and suspension components. Failure to do so can adversely affect the vehicle’s future performance, including increased chance of an accident. When driving over tree stumps, big rocks and other obstacles, observe the following rules: RMake sure the off-road driving program

(Y page 155) is switched on.

RAvoid high engine speeds. RShift automatic transmission into gear

range 1 (Y page 113).

RCheck the vehicle clearance before

crossing obstacles.

RCross obstacles (e.g. tree stumps or big

rocks) very slowly by aiming one of the front wheels at the center of the obstacle, and repeat same with the rear wheel.

! Special attention is needed when you

cross obstacles on a steep incline. The vehicle could slide sideways as a result of its possible slanted position which in turn may result in the vehicle tipping or rolling over.

Driving on sand G Warning! Do not reduce the tire inflation pressure before driving through sand. However, if you do so, remember to correct the tire inflation pressure before continuing your trip. Driving with reduced tire inflation pressure increases the risk of losing control of the vehicle and rolling over.

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253

When driving on sand, observe the following rules: RVehicles with air suspension program:

Set the raised level (Y page 156).

RAvoid high engine speeds. RShift automatic transmission into a gear range that is appropriate for the terrain. RIn sandy soil, drive at a steady speed as

conditions permit. This helps overcome the vehicle rolling resistance and reduce the likelihood of the vehicle sinking into the ground.

RDrive in tracks of other vehicles if they are

not too deep and you have sufficient clearance.

Ruts A number of off-road tracks or other byways have deep ruts which can cause the underbody to come in contact with the ground. RMake sure the off-road driving program

(Y page 155) is switched on.

RVehicles with air suspension program:

Set the raised level (Y page 156).

! Check that the ruts are not too deep and

your vehicle’s clearance is sufficient. Otherwise: Ryour vehicle may be damaged Rthe underbody of the vehicle may come in contact with the ground and you may get stuck

RAvoid high engine speeds. RShift automatic transmission into gear

range 1 (Y page 113).

RDrive next to the ruts rather than through

them if at all possible.

RIf the ruts are too deep to drive in, drive with one side of the vehicle on the grassy center strip if the route permits.

Returning from off-road driving G Warning! If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the road. Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires appear unsafe, have the vehicle towed to the nearest authorized Mercedes-Benz Center or tire dealer for repairs. Off-road driving increases strain on the vehicle. We recommend that you inspect the vehicle for possible damage after each off-road trip. Recognizing any damage and a subsequent timely repair reduces the chance of a possible breakdown or accident later on. Proceed as follows: RSwitch off the off-road driving program

(Y page 155).

RSwitch off the DSR (Y page 153). RVehicles with air suspension program:

Lower the vehicle back to a level suitable for road conditions, e.g. highway/high- speed level (Y page 156).

RClean all exterior lamps and check for

possible damage.

RClean the front and rear license plate. RRemove excessive dirt from tires, wheels,

wheel housings, and underbody. For instance, after driving in mud, clean the radiator, chassis, engine, brakes, and wheels from extreme dirt using a strong jet of water.

RCheck tires for possible damage. RInspect vehicle underbody, oil pan, brake hoses, etc., as well as vehicle underbody for possible damage.

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RCheck for brush or branches caught in the

underbody.

! Brush or branches could increase the

possibility of a fire, as well as cut fuel and/ or brake lines, puncture rubber bellows of the axles or drive shafts.

RAfter continued operation in mud, sand, water or other dirty conditions clean the brake discs, wheels, brake pads and check and clean axle joints. RConduct a brake test.

Trailer towing G Warning! Failure to use proper equipment and driving technique can result in a loss of vehicle control when towing a trailer. Improper towing or failure to follow the instructions in this manual can result in vehicle damage and/or serious personal injury. Follow the guidelines below carefully to assure safe trailer operation. Contact an authorized Mercedes-Benz Center should you require an explanation of information contained in this manual.

Trailer hitch ROnly install a trailer hitch receiver approved

for your vehicle. For information on availability and installation, contact an authorized Mercedes-Benz Center.

RThe bumpers on your vehicle are not

designed for use with clamp-type hitches. Do not attach rental hitches or other bumper-type hitches to them.

RTo reduce the possibility of damage,

remove the hitch ball adapter from the receiver when not in use.

Electrical connections The vehicle is prewired to accept the seven- wire harness included in the Mercedes-Benz approved trailer hitch receiver kit. i A four-pole conversion plug is available

from your authorized Mercedes-Benz Center as a spare part.

For further information, contact an authorized Mercedes-Benz Center.

Vehicle and trailer weights and ratings The Gross Trailer Weight (GTW) is the weight of the trailer plus the weight of all cargo, equipment, luggage, etc. loaded on the trailer. The maximum permissible GTW to be towed: RVehicles with 4MATIC: 7 200 lb (3 265 kg) RVehicles without 4MATIC: 4 630 lb

(2 100 kg)

Trailer Tongue Weight Rating (TWR) is the maximum permissible weight on the trailer tongue: RVehicles with 4MATIC: 576 lb (261 kg) limit for Mercedes-Benz approved hitch receiver RVehicles without 4MATIC: 370 lb (168 kg)

limit for Mercedes-Benz approved hitch receiver

Loading a trailer RWhen loading a trailer, you should observe that neither the permissible GTW, nor the Gross Vehicle Weight Rating (GVWR) are exceeded. The GVWR is indicated on the certification label located on the driver’s door B-pillar (Y page 227). Maximum permissible values are listed on the safety compliance certification labels for the vehicle and for the trailer to be towed.

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The lowest value listed must be selected when determining how the vehicle and trailer are loaded.

RThe tongue weight at the hitch ball must be

added to the rear axle weight to prevent exceeding the rear Gross Axle Weight Rating (GAWR). The GAWR is indicated on the certification label located on the driver’s door B-pillar (Y page 227).

i Mercedes-Benz recommends loading the trailer in such a manner that it has a tongue weight between 8 % and 15 % of the GTW.

i The weight of other accessories,

passengers and cargo will reduce the maximum trailer weight and tongue weight your vehicle can tow.

Checking weights of vehicle and trailer RTo assure that the towing vehicle and trailer

are in compliance with the maximum permissible weight limits, have the loaded rig (towing vehicle including driver, passengers and cargo, trailer fully loaded) weighed on a commercial scale.

RCheck the vehicle’s front and rear gross

axle weight, the Gross Trailer Weight (GTW) and tongue weight. The values as measured must not exceed the weight limits listed under “Vehicle and trailer weights and ratings” (Y page 254).

Coupling a trailer G Warning! Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/ or opens or closes doors or the tailgate. The vehicle’s level could change and you could endanger yourself and/or others as a result. Make sure that you do not operate the ADS switch or the vehicle level control system when coupling/decoupling the trailer.

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255

Observe maximum permitted trailer dimensions (width and length). Most states and all Canadian provinces require Rsafety chains between the towing vehicle

and the trailer The chains should be criss-crossed under the trailer tongue. They must be attached to the hitch receiver, and not to the vehicle’s bumper or axle. Make sure to leave enough slack in the chains to permit turning corners.

Ra separate brake system at various trailer

weights

Ra break-away switch on trailers with a

separate brake system. Check with your local state laws for specific requirements. The switch activates the trailer brakes in the possible event that the trailer might separate from the tow vehicle.

! Do not connect a trailer brake system (if

trailer is so equipped) directly to the vehicle’s hydraulic brake system, as your vehicle is equipped with antilock brakes. If you do, neither the vehicle’s brakes nor the trailer’s brakes will function properly.

i The provided vehicle electrical wiring

harness for trailer towing has a brake signal wire for hook-up to a brake controller.

X Make sure the automatic transmission is in

park position P (Y page 110).

X Engage the parking brake for the vehicle

(Y page 107).

X Start the engine (Y page 103). X Vehicles with vehicle level control:

Select the highway level (Y page 156). X Vehicles with Adaptive Damping System

(ADS): Set the ADS to AUTO or COMF (Y page 156).

X Turn off the engine (Y page 108).

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256 Driving instructions

X Close all doors and the tailgate. X Attach the trailer. X Plug in all electrical connectors. i Vehicles with vehicle level control:

When you are towing a trailer, the vehicle level always remains in the highway setting. The following applies additionally when towing a trailer: RThe vehicle is lowered to the highway

level when it reaches a speed of 5 mph (8 km/h) if not set to highway level. RThe highspeed level is not available. The restrictions that apply to towing also apply when using accessories that are connected to the trailer power socket, such as a bicycle rack.

Towing a trailer There are many different laws, including speed limit restrictions, having to do with trailer towing. Make sure your rig will be legal, not only for where you reside, but also for where you will be driving. A good source for this information can be the police or local authorities. Note the following, when driving with a trailer: RIn order to gain skill and an understanding

of the vehicle’s behavior, you should practice turning, stopping and backing up in an area which is free of traffic. RBefore you start driving check the

trailer hitch

- break-away switch - safety chains - electrical connections

lighting tires

RAdjust the mirrors (Y page 89) to permit unobstructed view beyond rear of trailer. RIf the trailer has electric brakes, start your vehicle and trailer moving slowly, and then

apply only the trailer brake controller by hand to make sure the brakes are working properly.

RAlways secure items in the trailer to

prevent load shifts while driving.

RWhen towing a trailer, check occasionally to make sure the load is secure, and that trailer lighting and brakes (if so equipped) are functioning properly.

RTake into consideration that when towing a

trailer, the handling characteristics are different and less stable from those when operating the vehicle without a trailer. It is important to avoid sudden maneuvers.

RThe vehicle and trailer combination is

heavier, and therefore limited in acceleration and climbing ability, and has a larger braking distance. It is more prone to reacting to cross wind gusts, and requires more sensitive steering input.

RIf possible, do not brake abruptly, but

rather engage the brake slightly at first to permit the trailer to activate its brake. Then increase the braking force.

! If the trailer should begin to sway, reduce

the vehicle’s speed immediately. Do not attempt to straighten out the tow vehicle and trailer by increasing the speed. RIf the transmission shifts between gears on

inclines repeatedly, shift to a lower gear range manually (Y page 113). Select 4, 3, 2 or 1. A lower gear and reduction of speed reduces the chance of engine overloading and/or overheating.

ROn very steep inclines, not manageable

with automatic transmission in gear range 1, switch on off-road driving program (Y page 155).

RWhen going down an incline, shift into a lower gear and use the engine’s braking effect.

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Avoid riding the brakes, thus overheating the vehicle and trailer brakes (if so equipped).

RIf the engine coolant rises to an extremely high temperature when the air conditioning is on, turn off the air conditioning system. Engine coolant heat can be additionally vented by opening the windows, switching the climate control fan speed to high and setting the temperature control to the maximum.

RDuring a passing maneuver extreme care must be exercised since your vehicle with a trailer will require additional passing distance ahead than when driving without a trailer. Because your vehicle and trailer is longer than your vehicle alone, you will also need to go much farther ahead of the passed vehicle before you can return to your lane.

Decoupling a trailer G Warning! Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/ or opens or closes doors or the tailgate. The vehicle’s level could change and you could endanger yourself and/or others as a result. Make sure that you do not operate the ADS switch or the vehicle level control system when coupling/decoupling the trailer.

X Make sure the automatic transmission is in

park position P (Y page 110).

X Engage the parking brake for the vehicle

(Y page 107).

X Start the engine (Y page 103). X Close all doors and the tailgate. X Engage the parking brake for the trailer.

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257

G Warning! Vehicles with air suspension program: As soon as you disconnect the electrical connection between the trailer and the vehicle, the vehicle will lower. To help avoid personal injury, make sure no one is near the wheel housing or underneath the vehicle before the electrical connection is disconnected. When you decouple the trailer, the vehicle is temporarily raised because the springs are relieved of load. Be especially careful during this process, as you could otherwise injure yourself and/or others. Make sure that any persons remaining in the vehicle do not press the switches for vehicle level control or the ADS.

X Disconnect all electrical plug connectors. X Decouple the trailer. X Make sure that the trailer coupling is free

of load.

X Turn off the engine (Y page 108).

Driving abroad If you plan to drive the vehicle outside the U.S. or Canada, you should request dealer network information for your destination from any authorized Mercedes-Benz Center.

Control and operation of radio transmitter Safety notes G Warning! Please do not forget that your primary responsibility is to drive the vehicle. A driver’s attention to the road must always be his/her primary focus when driving. For your safety and the safety of others, we recommend that you pull over to a safe location and stop before placing or taking a telephone call.

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If you choose to use the telephone22 while driving, please use the hands-free device and only use the telephone when road, weather and traffic conditions permit. Some jurisdictions prohibit the driver from using a mobile telephone while driving a vehicle. Only operate the COMAND22 (Cockpit Management and Data System) if road, weather and traffic conditions permit. Otherwise, you may not be able to observe traffic conditions and could endanger yourself and others. Bear in mind that at a speed of just 30 mph (approximately 50 km/h), your vehicle is covering a distance of 44 feet (approximately 14 m) every second.

Emission control Certain systems of the engine serve to keep the toxic components of the exhaust gases within permissible limits required by law. These systems will function properly only when maintained strictly according to factory specifications. Any adjustments on the engine should, therefore, be carried out only by qualified Mercedes-Benz Center authorized technicians. Engine adjustments should not be altered in any way. Moreover, the specified service procedures must be carried out regularly according to Mercedes-Benz servicing requirements. For details refer to the Maintenance Booklet. G Warning! Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death. Do not run the engine in confined areas (such as a garage) which are not properly ventilated. If you think that exhaust gas fumes are entering the vehicle while driving, have the

22 Observe all legal requirements.

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cause determined and corrected immediately. If you must drive under these conditions, drive only with at least one window fully open at all times.

Maintenance Notes The Maintenance System in your vehicle tracks the distance driven and the time elapsed since the last maintenance service. It calculates other maintenance service work required, and calls for the next maintenance service accordingly. We strongly recommend that you have your vehicle serviced at an authorized Mercedes- Benz Center. Have it serviced in accordance with the Maintenance Booklet at the times called for by the maintenance service indicator. i Failure to have the vehicle maintained in accordance with the Maintenance Booklet and maintenance service indicator at the designated times/mileage will result in vehicle damage not covered by the Mercedes-Benz Limited Warranty.

Maintenance service indicator message Information on maintenance work and maintenance intervals are specified in the Maintenance Booklet. Contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only) for additional information. The maintenance service indicator message will notify you when the next maintenance service is required. Starting approximately 1 month before the next maintenance service is required, one of the following messages will appear in the multifunction display. The messages will

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appear while you are driving or when you switch on the ignition (example service A): Service A In XXXXX Miles (km) Service A In XX Days Service A In X Day Service A Due Now

Refer to Maintenance Booklet for a listing of maintenance services and intervals they need to be performed at.

Clearing the maintenance service indicator message The maintenance service indicator message is cleared automatically Rafter approximately 10 seconds when you

switch on the ignition

Rafter approximately 10 seconds when

reaching the service threshold while driving Rafter approximately 30 seconds, once the suggested maintenance service term has passed

X Clearing the maintenance service

indicator message manually: Press reset button : on the instrument cluster. The standard display appears in the multifunction display.

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Maintenance service term exceeded If you have exceeded the suggested maintenance service term, you will see the following message in the multifunction display: Service A Exceeded By XXXXX Miles (Km) Service A Exceeded By XXX Days Service A Exceeded By X Day In addition, a signal sounds when the message appears. Any authorized Mercedes-Benz Center will reset the maintenance service indicator following a completed maintenance service.

Calling up the maintenance service indicator display i The menu overview can be found on

(Y page 121).

You can call up the maintenance service indicator display at any time to check when the next maintenance service is required. X Switch on the ignition. X Press button V or U on the

multifunction steering wheel repeatedly until the standard display (Y page 122) appears in the multifunction display.

X Press button * or & on the

multifunction steering wheel until the maintenance service indicator display with the service symbol ¯ and the maintenance service deadline appears in the multifunction display.

i If the battery was disconnected, the days of disconnection will not be included in the count shown by the maintenance service indicator. To arrive at the true maintenance service deadline, you will need to subtract these days from the days shown in the maintenance service indicator message or maintenance service indicator display.

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260 Vehicle care

Do not confuse the maintenance service indicator with the engine oil level indicator 4.

Resetting the maintenance service indicator In the event that the maintenance service on your vehicle is not carried out at an authorized Mercedes-Benz Center, you can have the maintenance service indicator reset. The automotive maintenance facility carrying out the maintenance service will find the information for resetting the maintenance service indicator in the maintenance-relevant literature for your vehicle. Such literature is available at any authorized Mercedes-Benz Center or directly from Mercedes-Benz. ! If the maintenance service indicator was

reset inadvertently, have an authorized Mercedes-Benz Center correct it. Only reset the maintenance service indicator if the proper maintenance service has been performed. Not following the proper maintenance service as described in the Maintenance Booklet will result in engine damage and/or other vehicle damage not covered by the Mercedes-Benz Limited Warranty.

Vehicle care Cleaning and care of the vehicle Notes Regular and proper care will help to maintain the value of your vehicle. G Warning! Many cleaning products can be hazardous. Some are poisonous, others are flammable. Always follow the instructions on the particular container. Always open your

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vehicle’s doors or windows when cleaning the inside. Never use fluids or solvents that are not designed for cleaning your vehicle. Always lock away cleaning products and keep them out of reach of children.

! When cleaning the vehicle, do not use

scouring agents. Never apply strong force and only use a soft, wet cloth or sponge. Otherwise you may scratch or damage the surface to be cleaned.

While in operation, even while parked, your vehicle is subjected to varying external influences which, if gone unchecked, can attack the paintwork as well as the vehicle underbody and cause lasting damage. Such damage is caused not only by extreme and varying climatic conditions, but also by: RAir pollution RRoad salt RTar RGravel and stone chipping To avoid paint damage, you should immediately remove: RGrease and oil RFuel RCoolant RBrake fluid RBird droppings RInsects RTree resins etc. Frequent washing reduces and/or eliminates the aggressiveness and potency of the above adverse influences.

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More frequent washings are necessary to deal with unfavorable conditions: Rnear the ocean Rin industrial areas (smoke, exhaust

emissions)

Rduring winter operation You should check your vehicle from time to time for stone chipping or other damage. Any damage should be repaired as soon as possible to prevent corrosion. In doing so, do not neglect the underbody of the vehicle. A prerequisite for a thorough check is a washing of the underbody followed by a thorough inspection. Damaged areas need to be re-undercoated. Your vehicle has been treated at the factory with a wax-base rustproofing in the body cavities which will last for the lifetime of the vehicle. Post-production treatment is neither necessary nor recommended by Mercedes- Benz because of the possibility of incompatibility between materials used in the production process and others applied later. We have selected vehicle-care products and compiled recommendations which are specially matched to our vehicles and which always reflect the latest technology. You can obtain Mercedes-Benz approved vehicle-care products at an authorized Mercedes-Benz Center. Scratches, corrosive deposits, corrosion or damage due to negligent or incorrect care cannot always be removed or repaired with the vehicle-care products recommended here. In such cases it is best to seek aid at an authorized Mercedes-Benz Center. The following topics deal with the cleaning and care of your vehicle and give important “how-to” information as well as references to Mercedes-Benz approved vehicle-care products.

Vehicle care 261

Power washer ! Follow the instructions provided by the

power washer manufacturer on maintaining a distance between the vehicle and the nozzle of the power washer. Never use a round nozzle to power-wash tires. The intense jet of water can result in damage to the tire. Always replace a damaged tire. Always keep the jet of water moving across the surface. Do not aim directly at electrical parts, electrical connectors, seals, or other rubber parts.

i Vehicles with KEYLESS-GO:

If a door handle is hit by a strong jet of water, and a SmartKey is within approximately 3 ft (1 m) of the vehicle, it could be inadvertently locked or unlocked.

Tar stains Quickly remove tar stains before they dry and become more difficult to remove. A tar remover is recommended.

Paintwork, painted body components ! Affixing stickers, magnets, adhesive tape

or similar materials to painted body components may damage the paintwork. Mercedes-Benz approved Paint Care should be applied when water drops on the paint surface do not “bead up”. This should normally be done every 3 to 5 months, depending on the climate and washing detergent used. Mercedes-Benz approved Paint Cleaner should be applied if the paint surface shows signs of embedded dirt (i.e. loss of gloss). Do not apply any of these products or wax if your vehicle is parked in the sun or if the hood is still hot. X Use the appropriate MB-Touch-Up Stick for quick and provisional repairs of minor paint

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damage (i.e. chips from stones, vehicle doors, etc.).

Do not allow cleaning agents to dry on the finish.

Engine cleaning Prior to cleaning the engine compartment, make sure to protect electrical components and connectors from contact with water and cleaning agents. Corrosion protection, such as MB Anticorrosion Wax should be applied to the engine compartment after every engine cleaning. Before applying, all control linkage bushings and joints should be lubricated. The poly-V-belt and all pulleys should be protected from any wax.

Vehicle washing In the winter, thoroughly remove all traces of road salt as soon as possible. When washing the vehicle underbody, do not forget to clean the inner sides of the wheels. i Vehicles with KEYLESS-GO:

If a door handle is hit by a strong jet of water, and a SmartKey is within approximately 3 ft (1 m) of the vehicle, it could be inadvertently locked or unlocked.

Hand-wash X Do not use hot water or wash your vehicle

in direct sunlight.

X Only use a soft, wet cloth or sponge to

clean the vehicle.

X Only use a mild vehicle wash detergent,

such as Mercedes-Benz approved Car Shampoo.

X Thoroughly spray the vehicle with a

diffused jet of water.

X Do not spray directly towards the

ventilation intake.

X Use plenty of water and rinse the sponge

and chamois frequently.

X Rinse with clean water and dry with a

chamois thoroughly.

Automatic car wash You can have your vehicle washed in an automatic car wash from the start. Brushless car washes are preferable. X To protect the filter system, activate the air recirculation mode using button d on the climate control panel.

! Do not clean your vehicle in an automatic

touchless car wash which uses caustic spray. Caustic spray will damage the paint or ornamental moldings.

If the vehicle is very dirty, prewash it before running it through the automatic car wash. ! Make sure the combination switch is set to wiper setting $. Otherwise, the rain sensor could activate and cause the wipers to move unintentionally. This may lead to vehicle damage. Due to the width of the vehicle, fold in exterior rear view mirrors prior to running the vehicle through an automatic car wash to prevent damage to the mirrors.

X When taking the vehicle through an automatic conveyor-type car wash: Make sure the automatic transmission remains in neutral position N. Observe instructions, see “Remaining in neutral position N” (Y page 111).

When leaving the automatic car wash, make sure the mirrors are folded out. After running the vehicle through an automatic car wash, wipe any wax off of the windshield and the wiper blade inserts. This will prevent smears and reduce wiping noise which can be caused by residual wax on the windshield.

Ornamental moldings X For regular cleaning and care of ornamental

moldings, use a damp cloth.

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! Do not use chrome cleaner on ornamental moldings. Although ornamental moldings may have chrome appearance, they could be made of anodized aluminum that will be damaged when cleaned with chrome cleaner. Instead, use a damp cloth to clean those ornamental moldings. For very dirty ornamental moldings of which you are sure are chrome-plated, use a chrome cleaner. If in doubt whether an ornamental molding is chrome-plated, contact an authorized Mercedes-Benz Center.

Headlamps, brake lamps, tail lamps, side markers, turn signal lenses X Use a mild vehicle wash detergent, such as

Mercedes-Benz approved Car Shampoo, with plenty of water.

! Only use window cleaning solutions that

are suitable for plastic lamp lenses. Window cleaning solutions which are not suitable may damage the plastic lamp lenses of the headlamps. Therefore, do not use abrasives, solvents or cleaners that contain solvents.

Cleaning the driving systems sensors

Vehicle care 263

X Switch off the ignition. X Clean Distronic system sensor cover : by

hand.

To clean Distronic system sensor cover : and the bumper area near sensors ; observe the following: RUse a mild vehicle wash detergent, such as

Mercedes-Benz approved Car Shampoo, with plenty of water.

RUse a soft, non-scratching cloth. ! If you use a power washer to clean the

sensor covers, observe the following: RFollow the instructions provided by the

power washer manufacturer.

RMaintain a distance between the sensor

covers and the nozzle of the power washer.

Cleaning the rear view camera lens

X Only use clean water and a soft, non-

scratching cloth to clean rear view camera lens :.

Be careful not to apply wax to rear view camera lens : when waxing the vehicle. If necessary, remove the wax using the Mercedes-Benz approved Car Shampoo with plenty of water.

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! Do not clean the camera and the area

around the camera Rwith a high-pressure cleaner Rwith a dry cloth and strong pressure Rwith aggressive cleaning agents You could otherwise damage the camera.

Cleaning the windows and the wiper blades ! Never open the hood when the wiper arms

are folded forward. G Warning! For safety reasons, switch off wipers and remove SmartKey from starter switch before cleaning the windshield and/or the wiper blades. Vehicles with KEYLESS-GO: Make sure the vehicle’s on-board electronics have status 0. Otherwise, the wiper motor could suddenly turn on and cause injury.

! Do not pull on the wiper blade inserts.

They could tear.

X Fold the wiper arms forward until they snap

into place.

X Clean the windshield and the wiper blade

inserts with a clean cloth and mild detergent solution.

X Use a soft, clean cloth and a mild window cleaning solution on all outside and inside glass surfaces. An automotive glass cleaner is recommended.

! Fold the windshield wiper arms back onto the windshield before turning the SmartKey in the starter switch or pressing the KEYLESS-GO start/stop button. Hold on to the wiper when folding the wiper arm back. If released, the force of the impact from the tensioning spring could crack the windshield.

! To clean the window interior, do not use a dry cloth, abrasives, solvents or cleaners

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containing solvents. Do not touch the inside of the windows with hard objects such as an ice scraper or ring. Doing so may damage the windows.

Light alloy wheels If possible, clean wheels once a week. X Use Mercedes-Benz approved Wheel Care,

a soft bristle brush and a strong spray of water for cleaning the light alloy wheels. ! Only use acid-free cleaning materials.

Acid may cause corrosion or damage the clear coat.

! The vehicle should not be parked for an extended period of time immediately after it has been cleaned. This applies especially after the wheel rims have been cleaned with wheel rim cleaner. Wheel rim cleaners can lead to increased corrosion of the brake disks and brake pads. Non-approved wheel cleaners may also damage the wheel paint if the vehicle is not driven after cleaning. Therefore, the vehicle’s brake system should always be warmed-up before it is parked after cleaning. Drive your vehicle for several minutes to allow the brakes to dry. When applying Mercedes-Benz approved Tire Care and Mercedes-Benz approved Wheel Care products, take care not to spray them on the brake disks.

Plastic and rubber parts X Use a gentle dishwashing detergent or mild detergent for delicate fabrics as a washing solution.

X Wipe with a cloth moistened in a lukewarm

solution. The surface may temporarily change color. If this is the case, wait for it to dry. G Warning! Do not use cleaners or cockpit care sprays containing solvents to clean the cockpit or the

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steering wheel. Cleaners containing solvents will make the surface porous and vehicle occupants could suffer serious injuries from plastic parts coming loose in the event of air bag deployment.

! Do not use oil, wax or scouring agents.

Otherwise you may scratch or damage the surface.

Hard plastic trim items X Use Mercedes-Benz approved Interior Care on a soft, lint-free cloth and apply with light pressure.

COMAND display ! You must switch off the COMAND display

and allow it to cool prior to cleaning.

! Do not use any liquids or cleaning agents.

These can damage or even destroy the COMAND display screen.

X Use a standard microfiber cloth and apply

with light pressure.

Steering wheel X Wipe with a damp cloth and dry thoroughly

or clean with Mercedes-Benz approved Leather Care.

Carpets X Use Mercedes-Benz approved Carpet and

Fabric Care for cleaning the carpets.

Headliner X Use a soft bristle brush or a dry-shampoo

cleaner in case of excessive dirt.

Seat belts X Only use clear, lukewarm water and soap. ! The seat belts must not be treated with chemical cleaning agents. Do not dry the

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seat belts at temperatures above 176‡ (80†) or in direct sunlight. G Warning! Do not bleach or dye seat belts as this may severely weaken them. In a crash they may not be able to provide adequate protection.

Upholstery Using aftermarket seat covers or wearing clothing that have the tendency to give off coloring (e.g. when wet, etc.) may cause the upholstery to become permanently discolored. By lining the seats with a proper intermediate cover, contact-discoloration will be prevented. G Warning! Only use seat or head restraint covers which have been tested and approved by Mercedes- Benz for your vehicle model. Using other seat or head restraint covers may interfere with or prevent Rdeployment of the front side impact air

bags

Rdeployment of the rear side impact air bags Ractivation of the NECK-PRO active front

head restraints

Contact an authorized Mercedes-Benz Center for availability. Leather upholstery Please note that leather upholstery is a natural product and is therefore subject to a natural aging process. Leather upholstery may also react to certain ambient influences such as high humidity or high temperature by showing wrinkles for example. X Wipe leather upholstery with a damp cloth and dry thoroughly or clean with Mercedes- Benz approved Leather Care.

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266 Vehicle care

! To avoid damage to leather upholstery:

RWipe with light pressure only. RDo not clean with abrasive cleaning

agents such as scouring milk or powder.

RDo not soak the leather upholstery.

As leather is a natural product, it could otherwise harden or become porous. RExercise particular care when cleaning

perforated leather as its underside should not become wet.

MB Tex upholstery X Use Mercedes-Benz approved Interior Care

onto a soft, lint-free cloth and apply with light pressure for cleaning the upholstery.

Wood trims X Only use water and a damp cloth to clean

wood trims in your vehicle.

! Do not use solvents like tar remover or wheel cleaner nor polishes or waxes as these may be abrasive.

Chrome-plated exhaust tip Regular cleaning and care of chrome-plated exhaust tips will help to maintain their shine and the classy appearance. X Use Mercedes-Benz approved Chrome

Polishing Paste each time the vehicle has been washed, especially during the winter.

! Do not use alkaline cleaners such as

wheel cleaners as they could cause corrosion.

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