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Towing and tow-starting
Important safety notes
G WARNING Hybrid vehicles: be sure to read the "HYBRID" supplement. Otherwise, you could fail to recognize dangers.
G WARNING If you tow the vehicle, you must use a rigid towing bar if:
Rthe engine is not running.
Rthere is a brake system malfunction.
Rthere is a malfunction in the power supply
or the vehicle's electrical system.
The power assistance for the steering and the brake force booster do not work when the engine is not running. You will need more force to steer and brake, you may have to depress the brake pedal with maximum force.
Before towing away, make sure that the steering can be moved and is not locked.
If you tow or tow-start another vehicle, its weight must not exceed the maximum permissible gross vehicle weight of your vehicle.
It is better to have the vehicle transported than to have it towed.
! The vehicle can be towed a maximum of
30 miles (50km). The towing speed of 30 mph (50 km/h) must not be exceeded.
If the vehicle has to be towed more than 30 miles (50km), the entire vehicle must be raised and transported.
! Make sure that the electric parking brake is released. If the electric parking brake is faulty, visit a qualified specialist workshop.
! Only secure the tow rope or tow bar at the towing eyes. Otherwise, the vehicle could be damaged.
! Do not use the towing eye for recovery,
as this could damage the vehicle. If in doubt, recover the vehicle with a crane.
! When towing, pull away slowly and
smoothly. If the tractive power is too high, the vehicles could be damaged.
! Do not tow with sling-type equipment.
This could damage the vehicle.
! When towing vehicles with KEYLESS-GO,
use the key instead of the Start/Stop button. Otherwise, the automatic transmission may shift to position P when the driver's or front-passenger door are opened, which could lead to damage to the transmission.
The automatic transmission must be in position N when the vehicle is being towed.
The battery must be connected and charged. Otherwise, you:
Rcannot turn the SmartKey to position 2 in
the ignition lock
Rcannot shift the automatic transmission to
position N
i Switch off the automatic locking feature
(Y page 269) You could otherwise be locked out when pushing or towing the vehicle.
Installing/removing the towing eye
Installing the towing eye
X Remove the towing eye from the vehicle
tool kit (Y page 478).
G WARNING The exhaust tail pipe may be hot. You could burn yourself if you touch the tail pipe. Be particularly careful when removing the rear cover.
The mountings for the removable towing eyes are located in the bumpers. They are at the front and at the rear, under the covers.
Towing and tow-starting 491
X Switch on the hazard warning lamps
(Y page 283).
X Turn the SmartKey to position 0 in the ignition lock and remove the SmartKey from the ignition lock.
X When leaving the vehicle, take the
SmartKey or the KEYLESS-GO key with you.
Towing a vehicle with both axles on
the ground
When having your vehicle towed, observe the important safety notes (Y page 490).
G WARNING The power assistance for the steering and the brake force booster do not work when the engine is not running. You will then need much more effort to brake and steer the vehicle. Adapt your style of driving accordingly.
The automatic transmission automatically shifts to position P when you open the driver's or front-passenger door or when you remove the SmartKey from the ignition lock. In order to ensure that the automatic transmission stays in position N when towing the vehicle, you must observe the following points:
X Make sure that the vehicle is stationary and
the SmartKey in the ignition lock is in position 0.
X Turn the SmartKey to position 2 in the
X Press the mark on cover : inwards in the
direction of the arrow.
X Take cover : off the opening.
X Screw the towing eye in clockwise to the
stop and tighten it.
Removing the towing eye
X Loosen the towing eye and unscrew it.
X Attach cover : to the bumper and press
until it engages.
X Place the towing eye in the vehicle tool kit.
Towing the vehicle with the rear axle
raised
Only possible on vehicles without
ignition lock.
4MATIC.
When towing your vehicle with the rear axle raised, it is important that you observe the safety instructions (Y page 490).
! The ignition must be switched off if you are towing the vehicle with the rear axle raised. Intervention by ESP® could otherwise damage the brake system.
On vehicles with KEYLESS-GO, use the key instead of the Start/Stop button (Y page 307).
X Depress and hold the brake pedal.
X Shift the automatic transmission to
position N.
X Release the brake pedal.
X Release the electric parking brake.
492 Fuses
X Switch on the hazard warning lamps
In the event of damage to the electrical
(Y page 283).
system
X Leave the SmartKey in position 2 in the
ignition lock.
i When towing with the hazard warning
lamps switched on, use the combination switch as usual to signal a change of direction. In this case, only the turn signals for the desired direction flash. When the combination switch is reset, the hazard warning lamps start flashing again.
If the battery is defective, the automatic transmission will be locked in position P. To shift the automatic transmission to position N, you must provide power to the vehicle's electrical system in the same way as when jump-starting (Y page 488).
Have the vehicle transported on a transporter or trailer.
Transporting the vehicle
The towing eye can be used to pull the vehicle onto a trailer or transporter for transporting purposes.
X Turn the SmartKey to position 2 in the
ignition lock.
Tow-starting (emergency starting)
! Vehicles with automatic transmission
must not be started by tow-starting. This could otherwise damage the transmission.
For further information on "Jump-starting" see (Y page 488).
X Shift the automatic transmission to
position N.
Fuses
As soon as the vehicle is loaded:
Important safety notes
X Prevent the vehicle from rolling away by
applying the electric parking brake.
X Shift the automatic transmission to
position P.
X Turn the SmartKey to position 0 in the ignition lock and remove the SmartKey from the ignition lock.
X Secure the vehicle.
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle such as axle or steering components. Otherwise, the vehicle could be damaged.
Notes for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed with either the front or the rear axle raised, as doing so will damage the transmission.
If the vehicle has transmission damage or damage to the front or rear axle, have it transported on a transporter or trailer.
G WARNING Only use fuses that have been approved for Mercedes-Benz vehicles and that have the correct fuse rating for the systems concerned. Do not attempt to repair or bridge faulty fuses. Using fuses that have not been approved or attempting to repair or bridge faulty fuses could cause the fuse to be overloaded and result in a fire. Have the cause traced and rectified at a qualified specialist workshop.
The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating.
Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart.
If a newly inserted fuse also blows, have the cause traced and rectified at a qualified
Fuses
493
specialist workshop, e.g. an authorized Mercedes-Benz Center.
! Only use fuses that have been approved
for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.
Before changing a fuse
X Secure the vehicle against rolling away
Driver's side illustrated
(Y page 327).
X To open: pull cover : outwards in the
X Switch off all electrical consumers.
direction of the arrow and remove it.
X Remove the SmartKey from the ignition
X To close: clip in cover : on the front of
lock.
the dashboard.
The fuses are located in various fuse boxes:
X Fold cover : inwards until it engages.
RFuse box on the right and left-hand sides of
the dashboard
RFuse box in the rear
RFuse box in the engine compartment on the left-hand side of the vehicle, when viewed in the direction of travel
RFuse box in the engine compartment on the right-hand side of the vehicle, when viewed in the direction of travel
The fuse allocation chart is in the vehicle document wallet.
Dashboard fuse box
There is a fuse box located on both the driver's side and the front-passenger side.
! Do not use a pointed object such as a
screwdriver to open the cover in the dashboard. You could damage the dashboard or the cover.
Fuse box in the rear
The fuse box is behind the armrest in the rear.
X To open: fold down the armrest. X Pull handle : on the trim behind the rear
seat armrest up in the direction of the arrow.
X Fold down trim ;.
494 Fuses
X To close: check whether the rubber seal is
lying correctly in cover ;.
X Put cover ; back in position. X Replace bracket =. X Tighten screws : using an Allen key.
! The cover must be seated properly,
otherwise moisture or dirt could impair the function of the fuses.
X Close the hood (Y page 463).
Fuse box on the right in the direction of
X Loosen cover ? with a suitable object =. X Remove cover ? upwards in the direction
of the arrow.
travel
! The cover must be seated properly,
otherwise moisture or dirt could impair the function of the fuses.
X Open the hood (Y page 462).
Fuse box in the engine compartment
Fuse box on the left in the direction of
travel
X Open the hood (Y page 462).
X Remove any existing moisture from the
fuse box using a dry cloth. X To open: open clamps ;. X Remove cover ; upwards.
X To close: check whether the rubber seal is
lying correctly in cover ;.
X Put cover ; back in position. X Fold down cover : and close clamps ;.
! The cover must be seated properly,
otherwise moisture or dirt could impair the function of the fuses.
X Close the hood (Y page 463).
X Remove any existing moisture from the
fuse box using a dry cloth.
X AMG vehicles: remove the control unit
above the fuse box.
X To open: undo screws : with an Allen
key.
X Remove bracket =. X Remove cover ;.
Engine emergency off
If the engine cannot be switched off as described, observe the following procedure:
X Take the fuse allocation chart out of the
vehicle document wallet.
X Search for “Emergency engine shutdown”
in the fuse allocation chart.
X Remove the fuses listed under "Emergency
engine shutdown".
Fuses
495
496
Useful information ............................ 498
Important safety notes .................... 498
Operation ........................................... 498
Winter operation ............................... 500
Tire pressure ..................................... 501
Loading the vehicle .......................... 508
Maximum load rating ....................... 512
Uniform Tire Quality Grading Standards .......................................... 513
Tire labeling ....................................... 514
Definition of terms for tires and loading ............................................... 518
Changing a wheel ............................. 521
Wheel and tire combinations ........... 521
497
498 Operation
Useful information
i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 31).
Before purchasing and using non-approved accessories, visit a qualified specialist workshop and inquire about:
Rsuitability
Rlegal stipulations
Rfactory recommendations
Information on the dimensions and types of wheels and tires for your vehicle can be found in the "Wheel/tire combinations" section (Y page 521).
Information on air pressure for the tires on your vehicle can be found:
Ron the vehicle's Tire and Loading
Information placard on the B-pillar
Important safety notes
Ron the tire pressure label on the fuel filler
G WARNING If wheels and tires of the wrong size are used, the wheel brakes or suspension components may be damaged. There is a risk of accident.
Always replace wheels and tires with those that fulfill the specifications of the original part (designation, manufacturer, model).
G WARNING A flat tire severely impairs the driving, steering and braking characteristics of the vehicle. There is a risk of accident.
Tires without run-flat characteristics:
Rdo not drive with a flat tire.
Rimmediately replace the flat tire with your emergency spare wheel or spare wheel, or consult a qualified specialist workshop.
flap
Rin the "Tire pressure" section
Pay special attention to the country-specific requirements for tire approval. These requirements can stipulate a specific tire type for your vehicle. Furthermore, the use of certain tire types in certain regions and areas of operation can be highly beneficial. You can find further information regarding tires at specialist tire retailers, at qualified specialist workshops or at any authorized Mercedes- Benz Center.
i Further information on wheels and tires can be obtained at any qualified specialist workshop.
Operation
Tires with run-flat characteristics:
Notes on driving
Rpay attention to the information and
warning notices on MOExtended tires (tires with run-flat characteristics).
Accessories that are not approved for your vehicle by Mercedes-Benz or are not being used correctly can impair the operating safety.
RIf the vehicle is heavily laden, check the tire
pressures and correct them if necessary.
RWhen parking your vehicle, make sure that the tires do not get deformed by the curb or other obstacles. If it is necessary to drive over curbs, speed humps or similar elevations, try to do so slowly and at an obtuse angle. Otherwise, the tires, particularly the sidewalls, can get damaged.
Notes on regularly inspecting wheels
and tires
G WARNING Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage and replace any damaged tires immediately.
RRegularly check the wheels and tires of
your vehicle for damage (e.g. cuts, punctures, tears, bulges on tires and deformation or cracks or severe corrosion on wheels) at least once a month, as well as after driving off-road or on rough roads. Damaged wheels can cause a loss of tire pressure.
RRegularly check the tire tread depth and
the condition of the tread across the whole width of the tire (Y page 499). If necessary, turn the front wheels to full lock in order to inspect the inner side of the tire surface.
RAll wheels must have a valve cap to protect the valve against dirt and moisture. Do not mount anything onto the valve (such as tire pressure monitoring systems) other than the standard valve cap or other valve caps approved by Mercedes-Benz for your vehicle.
RRegularly check the pressure of all the tires including the emergency spare wheel or the spare wheel, particularly prior to long trips, and correct the pressure as necessary (Y page 501).
Tire tread
G WARNING Insufficient tire tread will reduce tire traction. The tire is no longer able to dissipate water. This means that on wet road surfaces, the risk of hydroplaning increases, in particular where speed is not adapted to suit the driving conditions. There is a risk of accident.
Operation 499
If the tire pressure is too high or too low, tires may exhibit different levels of wear at different locations on the tire tread. Thus, you should regularly check the tread depth and the condition of the tread across the entire width of all tires.
Minimum tire tread depth for:
RSummer tires: â in (3 mm)
RM+S tires: ã in (4 mm)
For safety reasons, replace the tires before the legally prescribed limit for the minimum tire tread depth is reached.
Tread wear indicators (TWI) are required by law. Six indicators are positioned on the tire tread. They are visible once the tread depth is approximately á in (1.6 mm). If this is the case, the tire is so worn that it must be replaced.
Bar marking : for tread wear is integrated into the tire tread.
Notes on selecting, mounting and
replacing tires
ROnly mount tires and wheels of the same
type and make.
ROnly mount tires of the correct size onto
the wheels.
RAfter mounting new tires, run them in at
moderate speeds for the first 60 miles (100 km) as they only reach their full performance after this distance.
500 Winter operation
RDo not drive with tires which have too little
tread depth, as this significantly reduces the traction on wet roads (hydroplaning).
RReplace the tires after six years at the
latest, regardless of wear. This also applies to the spare wheel/emergency spare wheel.
The service life of tires depends on the following factors amongst other things:
Rdriving style
Rtire pressure
Rdistance covered
MOExtended tires (tires with run-flat
properties)
MOExtended tires (tires with run-flat properties) allow you to continue driving your vehicle even if one or more tires are entirely deflated.
MOExtended tires may be used only in conjunction with the activated tire pressure loss warning system or the activated tire pressure monitoring system and only on wheels specifically tested by Mercedes-Benz.
Notes on driving with MOExtended tires in the event of a flat tire can be found in the "Breakdown assistance" section (Y page 483).
Winter operation
Points to note
Have your vehicle winterproofed at a qualified specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel" section (Y page 521).
Driving with summer tires
your vehicle. Using summer tires at very cold temperatures could cause cracks to form, thereby damaging the tires permanently. Mercedes-Benz cannot accept responsibility for this type of damage.
M+S tires
At temperatures below 45 ‡ (+7 †), use winter tires or all-season tires. Both types of tire are identified by the M+S marking. Only winter tires bearing the i snowflake symbol in addition to the M+S marking provide the best possible grip in wintry road conditions. Only these tires will allow driving safety systems such as ABS and ESP® to function optimally in winter. These tires have been developed specifically for driving in snow.
Use M+S tires of the same make and tread on all wheels to maintain safe handling characteristics.
G WARNING M+S tires with a tire tread depth of less than ã in (4 mm) are not suitable for use in winter and do not provide sufficient traction. There is a risk of an accident. M+S tires with a tread depth of less than ã in (4 mm) must be replaced immediately.
Always observe the maximum permissible speed specified for the M+S tires you have mounted.
When you have mounted M+S tires:
X Check the tire pressures (Y page 505).
X Restart the tire pressure monitor
(Y page 505).
After mounting a spare wheel or an emergency spare wheel, do not drive faster than 50 mph (80 km/h).
At temperatures below 45 ‡ (+7 †), the elasticity of summer tires and therefore also the traction and braking capability are reduced considerably. Mount M+S tires on
G WARNING The wheel or tire size as well as the tire type of the spare wheel or emergency spare wheel and the wheel to be replaced may differ.
Tire pressure 501
Mounting an emergency spare wheel may severely impair the driving characteristics. There is a risk of an accident.
To avoid hazardous situations:
Radapt your driving style accordingly and
drive carefully.
Rnever install more than one spare wheel or emergency spare wheel that differs in size.
Ronly use a spare wheel or emergency spare
wheel of a different size briefly.
Rdo not switch ESP® off.
Rhave a spare wheel or emergency spare wheel of a different size replaced at the nearest qualified specialist workshop. Observe that the wheel and tire dimensions as well as the tire type must be correct.
Snow chains
For safety reasons, Mercedes-Benz recommends that you only use snow chains that have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality.
! You must drive at raised vehicle level if
snow chains have been mounted. The vehicle could otherwise be damaged.
possible when you come to a road that is not snow-covered.
RLocal regulations may restrict the use of
snow chains. Observe the appropriate regulations if you wish to mount snow chains.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
RSnow chains may not be mounted on the
emergency spare wheel.
! If snow chains are mounted on the front
wheels, the snow chains could grind against the bodywork or components of the chassis. This could result in damage to the vehicle or the tires.
! Vehicles with steel wheels: if you wish
to mount snow chains on steel wheels, make sure that you remove the respective wheels' hubcaps first. The hubcaps may otherwise be damaged.
i You may wish to deactivate
ESP®(Y page 75) when pulling away with snow chains mounted. This way you can allow the wheels to spin in a controlled manner, achieving an increased driving force (cutting action).
! On some tire sizes there is not enough
Tire pressure
space for snow chains. To avoid damage to the vehicle or tires, observe the "Wheel and tire combinations" section under "Tires and wheels".
If you intend to mount snow chains, please bear the following points in mind:
Tire pressure specifications
G WARNING Tires with tire pressures that are too low or too high are associated with the following hazards:
RSnow chains may not be mounted on all
Rthey can burst, in particular if the vehicle is
wheel/tire combinations. Permissible wheel-tire combinations (Y page 521).
heavily laden or when driven at high speeds.
RMount snow chains only in pairs and only
Rthe tires can wear excessively and/or
on the rear wheels. Observe the manufacturer's mounting instructions.
unevenly, which can severely impair tire traction.
ROnly use snow chains when driving on
Rthe driving, steering and braking
roads completely covered by snow. Remove the snow chains as soon as
characteristics may be severely impaired.
There is a risk of accident.
502 Tire pressure
Follow recommended tire inflation pressures and check the pressure of all the tires including the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
The recommended tire pressures for the tires mounted at the factory can be found on the labels described here.
Option 1) Tire and Loading Information placard on the B-pillar on the driver's side of the vehicle (Y page 508).
The Tire and Loading Information placard contains the recommended tire pressures for cold tires on a fully loaded vehicle and for the maximum permissible vehicle speed.
i The specifications given on the following
Tire and Loading Information placard are examples. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. The tire pressures applicable to your vehicle can be found on the Tire and Loading Information placard on your vehicle.
various operating conditions, i.e. differing load and speed conditions.
i Specifications shown in the examples of
tire pressure tables are for illustration purposes only. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. Tire pressure specifications applicable to your vehicle are located in your vehicle's tire pressure table.
Example: tire pressure table for all tires permitted for this vehicle by the factory
If a tire size precedes a tire pressure, the tire pressure information following is only valid for that tire size. The load conditions "partially laden" and "fully laden" are defined in the table for different numbers of occupants and amounts of luggage. The actual number of seats may differ.
: Recommended tire pressures
Option 2) Tire pressure table on the inside of the fuel filler flap.
The tire pressure table contains the recommended pressures for cold tires for
Example: tire pressure table with tire dimensions
Some tire pressure tables show only the rim diameters instead of the full tire size, e.g. R18. The rim diameter is part of the tire size
and can be found on the tire sidewall (Y page 515).
If the tire pressures have been set to the lower values for lighter loads and/or lower road speeds, the pressures should be reset to the higher values:
Rif you want to drive with an increased load
and/or
Rif you want to drive at higher road speeds.
i The tire pressures for increased loads
and/or higher road speeds, shown in the tire pressure table, may have a negative effect on driving comfort.
Option 3) The tire pressure for the
emergency/collapsible spare wheel (depending on vehicle equipment) can be found:
Rprinted in yellow on the rim of the
emergency/collapsible spare wheel
Rin the "Wheel and tire combinations"
section (Y page 521) in this Operator's Manual
Ron the Tire and Loading Information placard
on the B-pillar on the driver's side.
If the tire pressure is not set correctly, this can lead to an excessive build up of heat and a sudden loss of pressure.
For more information, contact a qualified specialist workshop.
Tire pressure 503
Important notes on tire pressure
G WARNING If the tire pressure drops repeatedly, the wheel, valve or tire may be damaged. Tire pressure that is too low may result in a tire blow-out. There is a risk of an accident.
RCheck the tire for foreign objects.
RCheck whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, contact a qualified specialist workshop.
G WARNING If you fit unsuitable accessories onto tire valves, the tire valves may be overloaded and malfunction, which can cause tire pressure loss. Due to their design, retrofitted tire pressure monitors keep the tire valve open. This can also result in tire pressure loss. There is a risk of an accident.
Only screw the standard valve cap or other valve caps approved by Mercedes-Benz for your vehicle onto the tire valve.
To test tire pressure, use a suitable tire pressure gauge. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure. On vehicles equipped with the electronic tire pressure monitoring system, the tire pressure can be checked using the on-board computer.
The tire temperature and pressure increase when the vehicle is in motion. This is dependent on the driving speed and the load.
Therefore, you should only correct tire pressures when the tires are cold.
The tires are cold:
Rif the vehicle has been parked without
direct sunlight on the tires for at least three hours and
Rif the vehicle has not been driven further
than 1 mile (1.6 km)
The tire temperature changes depending on the outside temperature, the vehicle speed and the tire load. If the tire temperature
504 Tire pressure
changes by 18 ‡ (10 †), the tire pressure changes by approximately 10 kPa (0.1 bar/ 1.5 psi). Take this into account when checking the pressure of warm tires and only correct the tire pressure if it is too low for the current operating conditions. If you check the tire pressure when the tires are warm, the resulting value will be higher than if the tires were cold. This is normal. Do not reduce the tire pressure to the value specified for cold tires. The tire pressure would otherwise be too low.
Observe the recommended tire pressures for cold tires:
Ron the Tire and Loading Information placard
on the B-pillar on the driver's side
Rin the tire pressure table on the inside of
the fuel filler flap
Rprinted in yellow on the rim of the
emergency/collapsible spare wheel (depending on vehicle equipment)
Underinflated or overinflated tires
Underinflation
G WARNING Tires with pressure that is too low can overheat and burst as a consequence. In addition, they also suffer from excessive and/ or irregular wear, which can severely impair the braking properties and the driving characteristics. There is a risk of an accident.
Avoid tire pressures that are too low in all the tires, including the spare wheel.
Underinflated tires may:
Rwear quickly and unevenly
Rhave an adverse effect on fuel consumption
Roverheat, leading to tire defects
Rhave an adverse effect on handling
characteristics
Overinflation
G WARNING Tires with excessively high pressure can burst because they are damaged more easily by road debris, potholes etc. In addition, they also suffer from irregular wear, which can severely impair the braking properties and the driving characteristics. There is a risk of an accident.
Avoid tire pressures that are too high in all the tires, including the spare wheel.
Overinflated tires may:
Rhave an adverse effect on handling
characteristics
Rwear quickly and unevenly
Rbe more susceptible to damage
Rhave an adverse effect on ride comfort
Rincrease the braking distance
Maximum tire pressures
Never exceed the maximum permissible tire inflation pressure. Always observe the recommended tire pressure for your vehicle when adjusting the tire pressure (Y page 501).
: Example: maximum permissible tire
pressure
i The actual values for tires are vehicle-
specific and may deviate from the values in the illustration.
Checking the tire pressures
Important safety notes
Observe the "Tire pressure information" section (Ypage 501).
Information on air pressure for the tires on your vehicle can be found:
Ron the vehicle's Tire and Loading
Information placard on the B-pillar
Ron the tire pressure label on the fuel filler
flap
Rin the "Tire pressure information" section
Checking tire pressures manually
To determine and set the correct tire pressure, proceed as follows:
X Remove the valve cap of the tire that is to
be checked.
X Press the tire pressure gauge securely onto
the valve.
X Read the tire pressure and compare it with
the recommended value on the Tire and Loading Information placard on the B-pillar on the driver's side of your vehicle.
X If necessary, increase the tire pressure to
the recommended value (Y page 501).
X If the tire pressure is too high, release air
by pressing down the metal pin in the valve using the tip of a pen, for example. Then check the tire pressure again using the tire pressure gauge.
X Screw the valve cap onto the valve.
X Repeat these steps for the other tires.
Tire pressure monitor
Important safety notes
It is the driver's responsibility to set the tire pressure to that recommended for cold tires which is suitable for the operating situation (Y page 501). Note that the correct tire pressure for the current operating situation must first be taught-in to the tire pressure
Tire pressure 505
monitor. If there is a substantial loss of pressure, the warning threshold for the warning message is aligned to the reference values taught-in. Restart the tire pressure monitor after adjusting the pressure of the cold tires (Y page 507). The current pressures are saved as new reference values. As a result, a warning message will appear if the tire pressure drops significantly.
The tire pressure monitor does not warn you of an incorrectly set tire pressure. Observe the notes on the recommended tire pressure (Y page 501).
The tire pressure monitor is not able to warn you of a sudden loss of pressure, e.g. if the tire is penetrated by a foreign object. In the event of a sudden loss of pressure, bring the vehicle to a halt by braking carefully. Avoid abrupt steering maneuvers.
If a tire pressure monitor system is installed, the vehicle's wheels have sensors that monitor the tire pressures in all four tires. The tire pressure monitor warns you if the pressure drops in one or more of the tires. The tire pressure monitor only functions if the correct sensors are installed to all wheels.
The tire pressure monitor has a yellow warning lamp in the instrument cluster for indicating pressure loss/malfunctions (USA) or pressure loss (Canada). Whether the warning lamp flashes or lights up indicates whether a tire pressure is too low or the tire pressure monitoring system is malfunctioning:
Rif the warning lamp is lit continuously, the
tire pressure on one or more tires is significantly too low. The tire pressure monitor is not malfunctioning.
RUSA only: if the warning lamp flashes for
around a minute and then remains lit constantly, the tire pressure monitor is malfunctioning.
G WARNING Each tire, including the spare (if provided), should be checked at least once a month when cold and inflated to the pressure
506 Tire pressure
recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver's door B-pillar or the tire pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or the tire pressure label, you should determine the proper tire pressure for those tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate if the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the warning lamp will flash for approximately a minute and then remain continuously illuminated. This sequence will be repeated every time the vehicle is started as long as the malfunction exists.
When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of
incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.
i USA only:
If the tire pressure monitor is malfunctioning, it may take more than ten minutes for the tire pressure warning lamp to inform you of the malfunction by flashing for approximately one minute and then remaining lit.
When the malfunction has been rectified, the tire pressure warning lamp goes out after a few minutes of driving.
Information on tire pressures is displayed in the multifunction display. After a few minutes of driving, the current tire pressure of each tire is shown in the multifunction display.
i The tire pressure values indicated by the on-board computer may differ from those measured at a gas station with a pressure gauge. The tire pressures shown by the on- board computer refer to those measured at sea level. At high altitudes, the tire pressure values indicated by a pressure gauge are higher than those shown by the on-board computer. In this case, do not reduce the tire pressures.
i The operation of the tire pressure monitor can be affected by interference from radio transmitting equipment (e.g. radio headphones, two-way radios) that may be being operated in or near the vehicle.
i USA only:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation of the device.
Any unauthorized modification to this device could void the user’s authority to operate the equipment.
i Canada only:
This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation of the device.
Any unauthorized modification to this device could void the user’s authority to operate the equipment.
Checking tire pressure electronically
X Make sure that the SmartKey is in
position 2(Y page 307) in the ignition lock.
X Press the = or ; button on the steering wheel to select the Service menu.
X Press the 9 or : button to select
Tire Pressure.
X Press the a button.
The current tire pressure for each wheel will be displayed in the multifunction display.
If the vehicle has been parked for longer than 20minutes, the Tire pressures will be displayed after driving for a few minutes message appears.
After a teach-in period, the tire pressure monitor automatically recognizes new wheels or new sensors. As long as a clear allocation of the tire pressure values to the individual wheels is not possible, the Tire Pressure Monitor Active display message is shown instead of the tire pressure display. The tire pressures are already being monitored.
i If a spare wheel/emergency spare wheel
is mounted, the system may continue to
Tire pressure 507
show the tire pressure of the wheel that has been removed for a few minutes. If this occurs, note that the value displayed for the position where the spare tire is mounted is not the same as the spare wheel/emergency spare wheel's current tire pressure.
Tire pressure monitor warning
messages
If the tire pressure monitor detects a significant pressure loss on one or more tires, a warning message is shown in the multifunction display. A warning tone also sounds and the tire pressure warning lamp lights up in the instrument cluster.
Each tire that is affected by a significant loss of pressure is highlighted with a color. If the Correct Tire Pressure message appears in the multifunction display:
X Check the tire pressure on all four wheels
and correct it if necessary.
i If the wheel positions on the vehicle are
interchanged, the tire pressures may be displayed for the wrong positions for a short time. This is rectified after a few minutes of driving, and the tire pressures are displayed for the correct positions.
Restarting the tire pressure monitor
When you restart the tire pressure monitor, all existing warning messages are deleted and the warning lamps go out. The monitor uses the currently set tire pressures as the reference values for monitoring.
The tire pressure monitor must be restarted when you set the tire pressure to a new value (as a result of changed drive or load characteristics, for example). The tire pressure monitor then monitors the new tire pressure values.
i Canada only: in most cases, the tire pressure monitor recognizes the new reference values automatically. However,
508 Loading the vehicle
you can also define reference values manually as described here.
Restart the tire pressure monitor after you have set the tire pressure to the value recommended for the desired driving situation (Y page 501). Only correct tire pressures on cold tires. Comply with the recommended tire pressures on the Tire and Loading Information placard the B-pillar on the driver's side. Additional tire pressure values for driving at high speeds or with heavy loads can be found in the tire pressure table on the inside of the fuel filler flap.
X Make sure that the tire pressure is correct
on all four wheels.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X Press the = or ; button on the steering wheel to select the Service menu.
X Press the 9 or : button to select
Tire Pressure.
X Press the a button.
The multifunction display shows the current tire pressure of the individual tires or the Tire Pressures Displayed After Driving A Few Minutes message.
X Press the : button.
The Use Current Pressures as New Reference Values message appears in the multifunction display.
If you wish to confirm the restart:
X Press the a button.
The Tire Pressure Monitor Restarted message appears in the multifunction display.
After driving for a few minutes, the system checks whether the current tire pressures are within the specified range. The new tire pressures are then accepted as reference values and monitored.
If you wish to cancel the restart:
X Press the % button.
The tire pressure values stored at the last restart will continue to be monitored.
Loading the vehicle
Instruction labels for tires and loads
G WARNING Overloaded tires can overheat, causing a blowout. Overloaded tires can also impair the steering and driving characteristics and lead to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load rating must be at least half of the GAWR of your vehicle. Never overload the tires by exceeding the maximum load.
Two instruction labels on your vehicle show the maximum possible load.
(1) The Tire and Loading Information placard is on the B-pillar on the driver's side. The Tire and Loading Information placard shows the maximum permissible number of occupants and the maximum permissible vehicle load. It also contains details of the tire sizes and corresponding pressures for tires installed at the factory.
(2) The vehicle identification plate is on the B-pillar on the driver's side. The vehicle identification plate informs you of the gross vehicle weight rating. It is made up of the vehicle weight, all vehicle occupants, the fuel and the cargo. You can also find information about the maximum gross axle weight rating on the front and rear axle.
The maximum gross axle weight rating is the maximum weight that can be carried by one axle (front or rear axle). Never exceed the maximum load or the maximum gross axle weight rating for the front or rear axle.
Loading the vehicle 509
Number of seats
i The specifications shown on the Tire and
Loading Information placard in the illustration are examples. The number of seats is vehicle-specific and can differ from the details shown. The number of seats in your vehicle can be found on the Tire and Loading Information placard.
Maximum number of seats : determines the maximum number of occupants allowed to travel in the vehicle. This information can be found on the Tire and Loading Information placard.
Determining the correct load limit
Step-by-step instructions
The following steps have been developed as required of all manufacturers under Title 49, Code of U.S. Federal Regulations, Part 575
pursuant to the "National Traffic and Motor Vehicle Safety Act of 1966".X Step 1: Locate the statement "The
combined weight of occupants and cargo should never exceed XXX kg or XXX lbs." on your vehicle’s Tire and Loading Information placard.
X Step 2: Determine the combined weight of the driver and passengers that will be riding in your vehicle.
X Step 3: Subtract the combined weight of
the driver and passengers from XXX kilograms or XXX lbs.
: B-pillar, driver's side
Maximum permissible load
i The specifications shown on the Tire and
Loading Information placard in the illustration are examples. The maximum permissible load is vehicle-specific and may deviate from the data shown here. The maximum permissible load that applies for your vehicle can be found on your vehicle's Tire and Loading Information placard.
X Specification for maximum permissible load : is listed on the Tire and Loading Information placard: "The gross weight of occupants and luggage must not exceed XXX kg or XXX lbs."
The gross weight of all vehicle occupants, load, luggage and trailer load/noseweight (if applicable) must not exceed the specified value.
510 Loading the vehicle
X Step 4: The resulting figure equals the
available amount of cargo and luggage load capacity. For example, if the "XXX" amount equals 1400 lbs and there will be five 150 lbs passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1 400 - 750 (5 x 150) = 650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in step 4.
X Step 6 (if applicable): If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 512).
Loading the vehicle 511
Example: steps 1 to 3
The following table shows examples on how to calculate total and cargo load capacities with varying seating configurations and number and size of occupants. The following examples use a load limit of 1 500 lbs (680 kg). This is for illustration purposes only. Make sure you are using the actual load limit for your vehicle stated on your vehicle's Tire and Loading Information placard (Y page 509).
Example 1
Example 2
Example 3
1500 lbs (680 kg)
1500 lbs (680 kg)
1500 lbs (680 kg)
Step 1
Combined maximum
weight of occupants
and cargo (data from
the Tire and Loading
Information placard)
Step 2
Number of people in
Example 1
Example 2
Example 3
the vehicle (driver
and occupants)
Distribution of the
occupants
Front: 2
Rear: 3
Front: 1
Rear: 2
Front: 1
Weight of the
occupants
Occupant 1: 150 lbs (68 kg)
Occupant 1: 200 lbs (91 kg)
Occupant 1: 150 lbs (68 kg)
Occupant 2: 180 lbs (82 kg)
Occupant 2: 190 lbs (86 kg)
Occupant 3: 160 lbs (73 kg)
Occupant 3: 150 lbs (68 kg)
Occupant 4: 140 lbs (63 kg)
Occupant 5: 120 lbs (54 kg)
Gross weight of all
750 lbs (340 kg) 540 lbs (245 kg) 150 lbs (68 kg)
occupants
512 Maximum load rating
Step 3
Permissible load and
trailer load/
noseweight
(maximum
permissible load
rating from the Tire
and Loading
Information placard
minus the gross
weight of all
occupants)
Example 1
Example 2
Example 3
1500 lbs (680 kg) - 750 lbs (340 kg) = 750 lbs (340 kg)
1500 lbs (680 kg) - 540 lbs (245 kg) = 960 lbs (435 kg)
1500 lbs (680 kg) - 150 lbs (68 kg) = 1350 lbs (612 kg)
The higher the weight of all the occupants, the smaller the maximum load for luggage.
Further information can be found under "Towing a trailer" (Y page 512).
the trailer load/noseweight is included in the load along with occupants and luggage. The trailer load/noseweight is usually approximately 10% of the gross weight of the trailer and its load.
Your Mercedes-Benz has been designed primarily to carry passengers and their luggage. Mercedes-Benz does not recommend towing a trailer with your vehicle.
Maximum load rating
Do not overload the tires by exceeding the specified load limit. The maximum permissible load can be found on the vehicle's Tire and Loading Information placard on the B-pillar on the driver's side (Y page 508).
Vehicle identification plate
Even if you have calculated the total load carefully, you should still make sure that the gross vehicle weight rating and the gross axle weight rating are not exceeded. Details can be found on the vehicle identification plate on the B-pillar on the driver's side of the vehicle (Y page 508).
Permissible gross vehicle weight: the gross weight of the vehicle, all passengers, load and trailer load/noseweight (if applicable) must not exceed the permissible gross vehicle weight.
Gross axle weight rating: the maximum permissible weight that can be carried by one axle (front or rear axle).
To ensure that your vehicle does not exceed the maximum permissible values (gross vehicle weight and maximum gross axle weight rating), have your loaded vehicle (including driver, occupants, cargo, and full trailer load if applicable) weighed on a suitable vehicle weighbridge.
Trailer load/noseweight
The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached,
Uniform Tire Quality Grading Standards
513
i The actual values for tires are vehicle-
specific and may deviate from the values in the illustration.
Maximum tire load : is the maximum permissible weight for which the tire is approved.
Uniform Tire Quality Grading
Standards
Overview of Tire Quality Grading
Standards
i The actual values for tires are vehicle-
specific and may deviate from the values in the illustration.
Where applicable, the tire grading information can be found on the tire sidewall between the tread shoulder and maximum tire width.
For example:
Tread wear Traction
Temperature
200
AA
All passenger car tires must conform to the statutory safety requirements in addition to these grades.
Tread wear
The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. government course. For example, a tire graded 150 would wear one and one-half times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm, due to variations in driving habits, service practices and differences in road characteristics and climate conditions.
