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above 30 km/h, the indicator lamp goes out and Blind Spot Assist is operational. If a vehicle is detected within the monitoring range of Blind Spot Assist at speeds above 30 km/h, warning lamp : on the corre- sponding side lights up red. This warning always occurs when a vehicle enters the blind spot monitoring range from behind or from
252 Driving systems
the side. When you overtake a vehicle, the warning only occurs if the difference in speed is less than 12 km/h. The yellow indicator lamp goes out if reverse gear is engaged. Blind Spot Assist is then deactivated. The brightness of the indicator/warning lamps is adjusted automatically according to the ambient light. Collision warning If a vehicle is detected in the monitoring range of Blind Spot Assist and you switch on the corresponding turn signal, a double warning tone sounds. Red warning lamp : flashes. If the turn signal remains on, detected vehicles are indicated by the flashing of red warning lamp :. There are no further warning tones. Activating Blind Spot Assist X Make sure that Blind Spot Assist
(Y page 279) is activated in the on-board computer.
X Turn the key to position 2 in the ignition
lock. Warning lamps : in the exterior mirrors light up red for approximately 1.5 seconds and then turn yellow.
Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting. Blind Spot Assist is then deactivated. The indicator lamp lights up yel- low in the exterior mirrors and the Blind Spot Assist currently unavailable See Owner's Manual message appears in the multifunction display. i You can deactivate the indicator lamps in
the exterior mirrors. To do so, deactivate Blind Spot Assist if: Rthe key is in position 2 in the ignition lock Rthe engine is not running Rthe electrical connection to the trailer
has been established.
Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in front of your vehicle by means of a cam- era :, at the top of the windscreen. Active Lane Keeping Assist detects lane markings on the road and can warn you before you leave your lane unintentionally. This function is available in the range between 60 km/h and 200 km/h. A warning may be given if a front wheel passes over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for up to 1.5 seconds. Important safety notes G WARNING Lane Keeping Assist cannot always clearly identify lane markings. In these cases, Lane Keeping Assist may: Rgive an unnecessary warning Rnot give a warning There is a risk of an accident. Always pay particular attention to the traffic situation and keep in lane, especially if Lane Keeping Assist alerts you. G WARNING The Lane Keeping Assist warning does not return the vehicle to the original lane. There is a risk of an accident.
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253
Always steer, apply the brakes or accelerate the vehicle yourself, especially if Lane Keep- ing Assist alerts you.
If you fail to adapt your driving style, Lane Keeping Assist can neither reduce the risk of an accident nor override the laws of physics. Lane Keeping Assist cannot take into account road, weather or traffic conditions. Lane Keeping Assist is only an aid. You are respon- sible for the distance to the vehicle in front, for vehicle speed, for braking in good time, and for staying in the lane. Lane Keeping Assist does not keep your vehi- cle in its lane. The system may be impaired or may not func- tion if: Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic, the sun or reflection from other vehicles (e.g. if the road surface is wet)
Rthe windscreen is dirty, misted up, dam-
aged or covered, for instance by a sticker, in the vicinity of the camera
Rno lane markings or several unclear lane
markings are present for one lane, e.g. in a construction area
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be detected
Rthe lane markings change quickly, e.g. lanes branch off, cross one another or merge
Rthe road is narrow and winding Rthere are highly variable shade conditions
on the road
Activating Lane Keeping Assist X Activate Lane Keeping Assist using the on- board computer; to do so, select Stand‐ ard or Adaptive(Y page 279). If you drive at speeds above 60 km/h and lane markings are detected, the lines in the assistance graphics display (Y page 277) are shown in green. Lane Keeping Assist is ready for use.
Standard If Standard is selected, no warning vibration occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®. Adaptive When Adaptive is selected, no warning vibra- tion occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown. Ryou brake hard. Ryou steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
Ryou cut the corner on a sharp bend. In order that you are warned only when nec- essary and in good time if you cross the lane marking, the system recognises certain con- ditions and warns you accordingly. The warning vibration occurs earlier if: Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a motor-
way.
Rthe system recognises solid lane markings.
254 Driving systems
The warning vibration occurs later if: Rthe road has narrow lanes. Ryou cut the corner on a bend.
Active Driving Assistance package General notes The Active Driving Assistance package con- sists of DISTRONIC PLUS (Y page 211), Active Blind Spot Assist (Y page 254) and Active Lane Keeping Assist (Y page 256).
Active Blind Spot Assist General notes Active Blind Spot Assist monitors the areas on either side of the vehicle that are not visi- ble to the driver with two lateral, rear-facing radar sensors. A warning display in the exte- rior mirrors draws your attention to vehicles detected in the monitored area. If you then switch on the corresponding turn signal to change lanes, you will also receive a visual and audible collision warning. If a risk of side impact is detected, corrective braking may help you avoid a collision. Active Blind Spot Assist evaluates the free space in the direc- tion of travel and to the side before making a course-correcting brake application. For this, Active Blind Spot Assist uses the forward- facing radar sensors. Active Blind Spot Assist supports you from a speed of approximately 30 km/h. Important safety notes Active Blind Spot Assist is only an aid and is not a substitute for attentive driving. G WARNING Active Blind Spot Assist does not react to vehicles: Rovertaking too closely on the side, placing
them in the blind spot area
Rif the difference in the speed of approach
and overtaking is too great
As a result, Active Blind Spot Assist may nei- ther give warnings nor intervene in such sit- uations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and maintain a safe distance at the side of the vehicle.
Radar sensors The Active Blind Spot Assist radar sensors are integrated into the front and rear bumpers and behind a cover in the radiator grille. Make sure that the bumpers and the cover in the radiator grille are free of dirt, ice or slush. The rear sensors must not be covered, e.g. by bicycle racks or overhanging loads. Following a severe impact or in the event of damage to the bumpers, have the function of the radar sensors checked at a qualified specialist workshop. Active Blind Spot Assist may oth- erwise no longer function properly. Monitoring range G WARNING Active Blind Spot Assist does not detect all traffic situations and road users. There is a risk of an accident. Always make sure that there is sufficient dis- tance to the side for other traffic or obstacles.
Example: Saloon
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255
Active Blind Spot Assist monitors the area up to 3.0 m behind your vehicle and directly next to your vehicle, as shown in the diagram. The detection of vehicles may be impaired in the case of: Rdirt on the sensors or the sensors are
obscured
Rpoor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range will then be indicated late or not at all. Active Blind Spot Assist may not detect nar- row vehicles, such as motorcycles or bicy- cles, or may only detect them too late. If the lanes are narrow, vehicles driving in the lane beyond the lane next to your vehicle may be indicated, especially if the vehicles are not driving in the middle of their lane. This may be the case if there are vehicles at the edge of their lane. Due to the nature of the system: Rwarnings may be issued in error when driv- ing close to crash barriers or similar solid lane borders
Rwarnings may be interrupted when driving
alongside long vehicles, for example lor- ries, for a prolonged time.
Indicator and warning display
: Yellow indicator lamp/red warning lamp Active Blind Spot Assist is not active at speeds below approximately 30 km/h. Vehi- cles in the monitoring range are then not indi- cated.
If Active Blind Spot Assist is switched on, indicator lamp : in the exterior mirrors lights up yellow up to a speed of 30 km/h. At speeds above 30 km/h, the indicator lamp goes out and Active Blind Spot Assist is operational. If a vehicle is detected within the monitoring range of Blind Spot Assist at speeds above 30 km/h, warning lamp : on the corre- sponding side lights up red. A warning is always issued when a vehicle enters the blind spot monitoring range from behind or from the side. When you overtake a vehicle, the warning only occurs if the difference in speed is less than 12 km/h. The yellow indicator lamp goes out if reverse gear is engaged. Active Blind Spot Assist is then no longer active. The brightness of the indicator/warning lamps is adjusted automatically according to the ambient light. Visual and acoustic collision warning If you switch on the turn signals to change lanes and a vehicle is detected in the side monitoring range, you receive a visual and acoustic collision warning. You then hear a double warning tone and red warning lamp : flashes. If the turn signal remains on, detected vehicles are indicated by the flash- ing of red warning lamp :. There are no fur- ther warning tones. Course-correcting brake application G WARNING A course-correcting brake application cannot always prevent a collision. There is a risk of an accident. Always steer, brake or accelerate yourself, especially if Active Blind Spot Assist warns you or makes a course-correcting brake appli- cation. Always maintain a safe distance at the sides.
256 Driving systems
Ryou have adopted a sporty driving style with
high cornering speeds
Ryou brake or accelerate decisively Ra driving safety system intervenes, such as
ESP® or PRE-SAFE® Brake
RESP® is deactivated. Ra loss of tyre pressure or a defective tyre is
detected
Activating Active Blind Spot Assist X Make sure that Active Blind Spot Assist (Y page 279) is activated in the on-board computer.
X Turn the key to position 2 in the ignition
lock. Warning lamps : in the exterior mirrors light up red for approximately 1.5 seconds and then turn yellow.
If Active Blind Spot Assist detects a risk of a side impact in the monitoring range, a course- correcting brake application is carried out. This is designed to help you avoid a collision. If a course-correcting brake application occurs, red warning lamp : flashes in the exterior mirror and a dual warning tone sounds. In addition, display ; appears in the multifunction display. In very rare cases, the system may make an inappropriate brake application. A course- correcting brake application may be interrup- ted at any time if you steer slightly in the opposite direction or accelerate. The course-correcting brake application is available in the speed range between 30 km/h and 200 km/h. Either a course-correcting brake application appropriate to the driving situation, or none at all, may occur if: Rthere are vehicles or obstacles, e.g. crash
barriers, on both sides of your vehicle
Ra vehicle approaches too closely on the
side
Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting. Active Blind Spot Assist is then deactivated. The indicator lamp lights up yellow in the exterior mirrors and the Active Blind Spot Assist currently unavail‐ able See Owner's Manual message appears in the multifunction display.
Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area in front of your vehicle by means of camera
Driving systems
257
system : at the top of the windscreen. Var- ious different areas to the front, rear and side of your vehicle are also monitored with the aid of the radar sensor system. Active Lane Keep- ing Assist detects lane markings on the road and can warn you before you leave your lane unintentionally. If you do not react to the warning, a lane-correcting application of the brakes can bring the vehicle back into the original lane. This function is available in the range between 60 km/h and 200 km/h. For Active Lane Keeping Assist to assist you when driving, the radar sensor system must be operational Important safety notes If you fail to adapt your driving style, Active Lane Keeping Assist can neither reduce the risk of an accident nor override the laws of physics. Active Lane Keeping Assist cannot take account of road and weather conditions. It may not recognise traffic situations. Active Lane Keeping Assist is only an aid. You are responsible for the distance to the vehicle in front, for vehicle speed, for braking in good time, and for staying in the lane. Active Lane Keeping Assist cannot continu- ously keep your vehicle in its lane. G WARNING Active Lane Keeping Assist cannot always clearly detect lane markings. In such cases, Active Lane Keeping Assist can: Rgive an unnecessary warning and then
make a course-correcting brake application to the vehicle
Rneither give a warning nor intervene There is a risk of an accident. Always pay particular attention to the traffic situation and keep within the lane, especially if Active Lane Keeping Assist alerts you. Ter- minate the intervention in a non-critical driv- ing situation.
The system may be impaired or may not func- tion if: Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic, the sun or reflection from other vehicles (e.g. if the road surface is wet)
Rthe windscreen is dirty, misted up, dam-
aged or covered, for instance by a sticker, in the vicinity of the camera
Rif the radar sensors in the front or rear
bumpers or the radiator grille are dirty, e.g. obscured by snow
Rno, or several, unclear lane markings are
present for one lane, e.g. in a construction area
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be detected
Rthe lane markings change quickly, e.g. lanes branch off, cross one another or merge
Rthe road is narrow and winding Rthere are highly variable shade conditions
on the road
If no vehicle is detected in the adjacent lane and broken lane markings are detected, no lane-correcting brake application is made. Warning vibration through the steering wheel A warning may be given if a front wheel passes over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for up to 1.5 seconds. Lane-correcting brake application G WARNING A lane-correcting brake application cannot always bring the vehicle back into the original lane. There is a risk of an accident.
258 Driving systems
Always steer, brake or accelerate yourself, especially if Active Lane Keeping Assist warns you or makes a lane-correcting brake appli- cation. G WARNING Active Lane Keeping Assist only detects traf- fic conditions or road users to a limited extent. In very rare cases, the system may make an inappropriate brake application, e.g. after intentionally driving over a solid lane marking. There is a risk of an accident. An inappropriate brake application may be interrupted at any time if you steer slightly in the opposite direction. Always make sure that there is sufficient distance to the side for other traffic or obstacles.
If you leave your lane under certain circum- stances, the vehicle will brake briefly on one side. This is intended to help you return the vehicle to the original lane. If a lane-correcting brake application occurs, display : appears in the multifunction dis- play. A lane-correcting brake application can be made after driving over a lane marking rec- ognised as being solid or broken. Before this, a warning must have been issued by means of intermittent vibration through the steering wheel. In addition, a lane with lane markings on both sides must be recognised. In the case of a broken lane marking being detected, a lane-correcting brake application can only be made if a vehicle has been detec- ted in the adjacent lane. The following vehi-
cles can have an influence on brake applica- tion: oncoming traffic, vehicles that are over- taking and vehicles that are driving parallel to your vehicle. i A further lane-correcting brake applica- tion can only occur after your vehicle has returned to the original lane.
No lane-correcting brake application occurs if: Ryou clearly and actively steer, brake or
accelerate.
Ryou cut the corner on a sharp bend. Ryou have adopted a sporty driving style with
high cornering speeds or high rates of acceleration.
Ryou have switched on the turn signals. Ra driving safety system intervenes, such as
ESP®, PRE-SAFE® Brake or Active Blind Spot Assist.
RESP® is deactivated. Rthe transmission is not in position D. Ron vehicles with a trailer tow hitch, the
electrical connection to the trailer has been correctly established.
Ran obstacle has been detected in the lane
in which you are driving.
Ra loss of tyre pressure or a defective tyre
has been detected and displayed.
There is a possibility that the Active Lane Assistant could misjudge the given traffic sit- uation. An inappropriate brake application may be interrupted at any time if: Ryou steer slightly in the opposite direction. Ryou switch on the turn signal. Ryou clearly brake or accelerate. A lane-correcting brake application is inter- rupted automatically if: Ra driving safety system intervenes, such as
ESP®, PRE-SAFE® Brake or Active Blind Spot Assist.
Rlane markings are no longer be detected.
Towing a trailer
259
Activating Active Lane Keeping Assist X Activate Active Lane Keeping Assist using the on-board computer; to do so, select Standard or Adaptive(Y page 279). If you drive at speeds above 60 km/h and lane markings are detected, the lines in the assistance graphics display (Y page 277) are shown in green. Active Lane Keeping Assist is ready for use. If Standard is selected, no warning vibra- tion occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such as ABS, BAS or ESP®. When Adaptive is selected, no warning vibration occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such
as ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown. Ryou brake hard. Ryou steer actively, e.g. swerve to avoid
an obstacle or change lane quickly. Ryou cut the corner on a sharp bend.
In order that you are warned only when nec- essary and in good time if you cross the lane marking, the system recognises certain con- ditions and warns you accordingly. The warning vibration occurs earlier if: Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a motor-
way.
Rthe system recognises solid lane markings. The warning vibration occurs later if: Rthe road has narrow lanes. Ryou cut the corner on a bend.
Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting.
Towing a trailer Important safety notes G WARNING The braking system can overheat if you leave your foot on the brake pedal while driving. This increases the braking distance and could even cause the braking system to fail. There is a risk of an accident. Never use the brake pedal as a footrest. Do not simultaneously depress both the brake pedal and the accelerator pedal while driving. G WARNING You could lose control of the vehicle/trailer combination if it begins to swerve. The vehi- cle/trailer combination could even overturn. There is a risk of an accident. On no account should you attempt to straighten out the vehicle/trailer combina- tion by increasing speed. Decrease your speed and do not countersteer. Brake if nec- essary. G WARNING If the maximum the permissible load for a car- rier system is exceeded, the carrier could come loose from the vehicle and endanger other road users. There is a risk of an accident and injury. Never exceed the permissible noseweight when using a carrier.
! Depressing the brake pedal constantly
results in excessive and premature wear to the brake pads.
260 Towing a trailer
If you exceed the maximum permissible nose- weight of the trailer drawbar on the ball cou- pling, the following may become damaged: Ryour vehicle Rthe trailer Rthe ball coupling Rthe trailer tow hitch The vehicle/trailer combination could become unstable. If the noseweight used is lower than the min- imum permissible noseweight, the vehicle/ trailer combination could also become unsta- ble. To avoid hazardous situations: Rmake sure to check the noseweight before
each journey.
Ruse a drawbar noseweight as close as pos-
sible to the maximum noseweight.
Rdo not exceed the maximum permissible
noseweight.
Rdo not use a noseweight lower than the
minimum permissible trailer drawbar nose- weight.
When reversing the vehicle towards the trailer, make sure there is nobody between the trailer and the vehicle. Couple and uncouple the trailer carefully. If you do not couple the trailer to the towing vehicle correctly, the trailer could become detached. Make sure that the following values are not exceeded: Rthe permissible trailer drawbar noseweight Rthe permissible trailer load Rthe permissible rear axle load of the towing
vehicle
Rthe maximum permissible gross vehicle
weight of both the towing vehicle and the trailer
You will find the applicable permissible val- ues, which must not be exceeded, in the vehi- cle documents. You will find the values approved by the man- ufacturer on the vehicle identification plates
and those for the towing vehicle under "Tech- nical data" (Y page 481). When towing a trailer, your vehicle's handling characteristics will be different in comparison to when driving without a trailer. The vehicle/trailer combination: Ris heavier Ris restricted in its acceleration and gradi-
ent-climbing capability
Rhas an increased braking distance Ris affected more by strong crosswinds Rdemands more sensitive steering Rhas a larger turning circle This can impair the vehicle's handling char- acteristics. Adapt your style of driving accord- ingly. Maintain a safe distance. Drive care- fully. When towing a trailer, always adjust your speed to the current road and weather con- ditions. Do not exceed the maximum permis- sible speed for your vehicle/trailer combina- tion.
Notes on towing a trailer General notes i When towing a trailer, set the tyre pres- sure on the rear axle of the towing vehicle for a maximum load; see the tyre pressure table in the fuel filler flap (Y page 407).
Please note that when towing a trailer, PARK- TRONIC (Y page 228), Active Parking Assist (Y page 232) and Blind Spot Assist (Y page 250) are only available with limita- tions, or not at all. i On vehicles without level control, the
height of the ball coupling will alter accord- ing to the load placed on the vehicle. If nec- essary, use a trailer with a height-adjusta- ble drawbar.
You will find fitting dimensions and loads under "Technical data" (Y page 480).
Towing a trailer
261
Driving tips i Observe the notes on ESP® trailer stabi-
lisation (Y page 80).
The maximum permissible speed for vehicle/ trailer combinations depends on the type of trailer. Before beginning the journey, check the trailer's documents to see what the max- imum permitted speed is. Observe the legally prescribed maximum speed in the relevant country. For certain Mercedes-Benz vehicles, the max- imum permissible rear axle load is increased when towing a trailer. Refer to the "Technical data" section to find out whether this applies to your vehicle. If you utilise any of the added maximum rear axle load when towing a trailer, the vehicle/trailer combination may not exceed a maximum speed of 100 km/h for reasons concerning the operating permit. This also applies in countries in which the permissible maximum speed for vehicle/ trailer combinations is above 100 km/h. When towing a trailer, your vehicle's handling characteristics will be different in comparison to when driving without a trailer and it will consume more fuel. Change into a lower gear in good time on long and steep downhill gradients. i This also applies if you have activated
cruise control, SPEEDTRONIC or DIS- TRONIC PLUS.
This will use the braking effect of the engine, so less braking will be required to maintain vehicle speed. This relieves the load on the brake system and prevents the brakes from overheating and wearing too quickly. If you need additional braking, depress the brake pedal repeatedly rather than continuously.
Driving tips If the trailer swings from side to side: X Do not accelerate. X Do not countersteer. X Brake if necessary.
RMaintain a greater distance from the vehi-
cle in front than when driving without a trailer.
RAvoid braking abruptly. If possible, brake gently at first to allow the trailer to run on. Then, increase the braking force rapidly.
RThe values given for gradient-climbing
capabilities from a standstill refer to sea level. When driving in mountainous areas, note that the power output of the engine, and consequently the vehicle's gradient- climbing capability, decrease with increas- ing altitude.
Folding out the ball coupling G WARNING If the ball coupling is not correctly engaged, the trailer can detach. There is a risk of an accident. Always engage the ball coupling as described. G WARNING If you release the ball coupling or it does not engage correctly when folding in, it will swing out. Within pivoting range of the ball coupling, there is an increased risk of an accident and injury. Only release the ball coupling if the pivoting range is unobstructed. Always make sure that the ball coupling engages when folding in. G WARNING Hybrid vehicles: ensure that you read the "HYBRID" supplement. You could otherwise fail to recognise dangers.
262 Towing a trailer
Saloon Before you can tow a trailer with your vehicle, you must fold out the ball coupling. The release wheel is located behind the left- hand side trim panel in the boot/luggage compartment. To open the cover (Saloon): X Slide luggage net ; down. X Turn handle : anti-clockwise and fold
down cover =.
Saloon To unlock and fold out the ball coupling (Saloon): X Grip release wheel A so that your thumb
lies on the thumb rest.
X Turn release wheel A anti-clockwise until
the ball coupling releases and folds out from under the rear bumper. Indicator lamp ? flashes.
Estate Before you can tow a trailer with your vehicle, you must fold out the ball coupling. The release wheel is located behind the left- hand side trim panel in the boot/luggage compartment. To open the cover (Estate): X Pull handle : in the direction of the arrow
and fold cover ; down.
Estate To unlock and fold out the ball coupling (Estate): X Grip release wheel ? so that your thumb
lies on the thumb rest.
X Turn release wheel ? anti-clockwise until
the ball coupling releases and folds out from under the rear bumper. Indicator lamp = flashes.
Towing a trailer
263
and Active Parking Assist also depends on this.
Uncoupling a trailer G WARNING If you uncouple a trailer with an engaged over- run brake, you could trap your hand between the vehicle and the trailer drawbar. This poses a risk of injury. Do not uncouple a trailer with an engaged overrun brake. G WARNING Vehicles with level control: If you disconnect the trailer cable, the vehicle is lowered. This can cause you or others to become trapped between the vehicle body and tyres, or underneath the vehicle. This poses a risk of injury. Make sure that no-one is in the immediate vicinity of the wheel arch or underneath the vehicle when disconnecting the trailer cable.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your vehicle could be damaged by the rebound- ing of the overrun brake.
X Make sure that the transmission is in posi-
tion P.
X Apply the parking brake. X Secure the trailer against rolling away. X Remove the trailer cable and decouple the
trailer.
Folding in the ball coupling G WARNING If you release the ball coupling or it does not engage correctly when folding in, it will swing out. Within pivoting range of the ball coupling, there is an increased risk of an accident and injury.
X Pull the ball coupling in the direction of the arrow until it engages in a vertical position. Saloon: indicator lamp ? goes out. Estate: indicator lamp = goes out. The multifunction display shows the Trailer hitch Check lock mech. mes- sage until the ball coupling is engaged.
X Remove the protective covering from the ball coupling and store it in a safe place.
X Make sure that the ball of the ball coupling
is clean and greased.
The power socket is integrated in the ball coupling. HYBRID vehicles: make sure that you read the "HYBRID" supplement included in the vehicle literature. Otherwise, you may not recognise dangers.
Coupling up a trailer X Make sure that the transmission is in posi-
tion P.
X Apply the parking brake. X Position the trailer level behind the vehicle. X Couple up the trailer. X Establish the electric connection between
the vehicle and the trailer.
X Check that the trailer lighting system is
working. A trailer that is connected is recognised only when the electrical connection is established correctly and when the lighting system is working properly. The function of other systems, such as ESP®, PARKTRONIC
264 Towing a trailer
Only release the ball coupling if the pivoting range is unobstructed. Always make sure that the ball coupling engages when folding in.
X Place the protective covering on the ball
coupling.
Saloon The release wheel is located behind the left- hand side trim panel in the boot/luggage compartment. To open the cover (Saloon): X Slide luggage net ; down. X Turn handle : anti-clockwise and fold
down cover =.
Estate The release wheel is located behind the left- hand side trim panel in the boot/luggage compartment. To open the cover (Estate): X Pull handle : in the direction of the arrow
and fold cover ; down.
Saloon To unlock and lower the ball coupling (Saloon): X Grasp release wheel A with your hand such that the thumb is in the thumb rest and turn it anti-clockwise. The ball coupling unlocks and lowers. Indi- cator lamp ? flashes.
Estate To unlock and lower the ball coupling (Estate): X Grasp release wheel ? with your hand such that the thumb is in the thumb rest and turn it anti-clockwise. The ball coupling unlocks and lowers. Indi- cator lamp = flashes.
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265
The trailer's permanent power supply is switched off in the event of low vehicle supply voltage and after six hours at the latest. You can find more information about instal- ling the trailer electrics at a qualified special- ist workshop.
Bulb failure indicator for LED lamps i If LED lamps are fitted in the trailer, an error message may appear in the multi- function display even if there is no fault. The reason for the error message could be that the current has fallen below the minimum of 50 mA.
To ensure reliable operation of the bulb failure indicator, each LED chain in the trailer lighting must be guaranteed a minimum current of 50 mA.
Trailer with 7-pin connector General notes Trailer with 7-pin connector: you can con- nect to the 13-pin socket on the ball coupling using an adapter or, if necessary, an adapter cable. Both can be obtained at a qualified specialist workshop.
Fitting the adapter ! Make sure that there is sufficient cable
play so that the cable cannot become detached when cornering.
X Press the ball coupling in the direction of
the arrow until it engages behind the bumper. Saloon: indicator lamp ? goes out and the message in the multifunction display dis- appears. Estate: indicator lamp = goes out and the message in the multifunction display dis- appears.
i Fold the ball coupling back in if you are
not using the trailer tow hitch.
Trailer power supply ! You can connect accessories with a
power rating of up to 240 W to the perma- nent power supply and with a power rating of up to 180 W to the power supply that is switched on via the ignition lock. The trailer battery may not be charged from the power supply.
X To switch the connected power supply on or off: turn the key in the ignition lock to position 2 or 0 respectively (Y page 177).
When it leaves the factory, your vehicle's trailer socket is equipped with a permanent power supply and a power supply that is switched on via the ignition lock. The permanent power supply is supplied via trailer socket pin 9. The power supply that is switched on via the ignition lock is supplied via trailer socket pin 10.
266 Towing a trailer
X Open the socket cover. X Insert the plug connector with lug : into groove = on the socket. Turn bayonet con- nection ; clockwise to the stop.
X Let the cover engage. X If you are using an adapter cable, secure
the cable to the trailer with cable ties.
Useful information ............................ 268
Important safety notes .................... 268
Displays and operation .................... 268
Menus and submenus ...................... 271
Display messages ............................. 290
Warning and indicator lamps in the instrument cluster ............................ 319267
268 Displays and operation
Useful information
i This Owner's Manual describes all mod- els, series and optional equipment for your vehicle that were available at the time of going to press. National variations are pos- sible. Note that your vehicle may not be equipped with all of the functions descri- bed. This is also the case for systems and functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 26).
Important safety notes
G WARNING Operating the integrated information systems and communications equipment in the vehicle while driving will distract you from traffic con- ditions. You could then lose control of the vehicle. There is a risk of an accident. Only operate these devices if road traffic con- ditions permit. If you are unsure about the surrounding conditions, pull over to a safe location and make entries only while the vehi- cle is stationary. G WARNING If the instrument cluster has failed or mal- functioned, you may not recognise function restrictions relevant to safety. The operating safety of your vehicle may be impaired. There is a risk of an accident. Drive on carefully. Have the vehicle checked at a qualified specialist workshop immedi- ately.
You must observe the legal requirements for the country in which you are currently driving when operating the on-board computer. The on-board computer only shows messages or warnings from certain systems in the mul- tifunction display. You should therefore make sure your vehicle is operating safely at all
times. Otherwise, a vehicle that is not oper- ating safely may cause an accident. HYBRID vehicles: make sure that you read the "HYBRID" Supplement. You could otherwise fail to recognise dangers, e.g. due to high- voltage. For an overview; see the instrument panel illustration (Y page 32).
Displays and operation Coolant temperature gauge G WARNING If you open the bonnet while the engine is overheating or while there is a fire in the engine compartment, you could come into contact with hot gases or other leaking service products. There is a danger of injury. Allow an overheating engine to cool down before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet closed and notify the fire brigade.
The coolant temperature gauge is in the instrument cluster on the left-hand side (Y page 32). Under normal operating conditions and with the specified coolant level, the coolant tem- perature may rise to 120 †. At high outside temperatures and when driv- ing uphill, the coolant temperature may rise to the end of the scale.
Rev counter ! Do not drive in the overrevving range.
Doing so will damage the engine.
The red band in the rev counter indicates the engine's overrevving range. The fuel supply is interrupted to protect the engine when the red band is reached.
Displays and operation 269
Outside temperature display You should pay special attention to road con- ditions when temperatures are around the freezing point. The outside temperature display is in the mul- tifunction display (Y page 270). Changes in the outside temperature are dis- played after a short delay.
Speedometer with segments The segments in the speedometer indicate which speed range is available. RCruise control activated (Y page 205): The segments light up from the stored speed to the maximum speed.
RVariable SPEEDTRONIC activated
(Y page 208): The segments light up from the start of the scale to the selected limit speed.
RDISTRONIC PLUS activated (Y page 211):
One or two segments in the set speed range light up.
RDISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the vehicle in front and the stored speed light up.
Operating the on-board computer Overview
: Multifunction display ; Switches on LINGUATRONIC; see the sep-
arate operating instructions
= Right control panel ? Left control panel A Back button X To activate the on-board computer: turn
the key to position 1 in the ignition lock.
You can control the multifunction display and the settings in the on-board computer using the buttons on the multifunction steering wheel.
270 Displays and operation
Left control panel
RCalls up the menu and menu bar
Press briefly: RScrolls through lists RSelects a submenu or function RIn the Audio menu: selects a stored station, an audio track or a video scene RIn the Tel (telephone) menu: switches to the phone book and selects a name or telephone number
Press and hold: RIn the Audio menu: selects the previous/next station or selects an audio track or a video scene using rapid scrolling RIn the Tel (Telephone) menu: starts rapid scrolling if the phone book is open
a RConfirms selection/display mes-
sage RIn the Tel (Telephone) menu: switches to the telephone book and starts dialling the selected number RIn the Audio menu: stops the station search function at the desired station
Right control panel
~ RRejects or ends a call
RExits telephone book/redial
memory
6 RMakes or accepts a call
RSwitches to the redial memory
RAdjusts the volume
8 RMute
Back button
% Press briefly:
RBack RSwitches off LINGUATRONIC;
see the separate operating instructions RHides display messages/calls up the last Trip menu function used
RExits the telephone book/redial
memory
% Press and hold: RCalls up the standard display in the Trip menu
Multifunction display
Example: DIRECT SELECT automatic transmission multifunction display : Text field ; Menu bar = Drive program (Y page 187) ? Transmission position (Y page 187) A Permanent display: outside temperature
or speed (Y page 281)
X To show menu bar;: press the = or ; button on the steering wheel.
Menu bar ; disappears after a few seconds. Text field : shows the selected menu or submenu as well as display messages. The following messages may appear in the multifunction display:
Gearshift recommendation, manual transmission (Y page 186) or automatic trans- mission (Y page 191) Active Parking Assist (Y page 232)
XjY
¯ Cruise control (Y page 205) È SPEEDTRONIC (Y page 208) _ Adaptive Highbeam Assist
_ Adaptive Highbeam Assist PLUS
¤ ECO start/stop function
ë HOLD function (Y page 221) 120 km/h! Maximum permissible speed
exceeded (only for certain coun- tries)
(Y page 143)
(Y page 144)
(Y page 181)
Menus and submenus Menu overview Press the = or ; button on the steer- ing wheel to call up the menu bar and select a menu. Operating the on-board computer (Y page 269). Depending on the equipment fitted in the vehicle, you can call up the following menus: RTrip menu (Y page 271) RNavi menu (navigation instructions) (Y page 273) RAudio menu (Y page 274) RTel menu (telephone) (Y page 276) RAssist. menu (assistance) (Y page 277) RServ. menu (Y page 280)
271
Menus and submenus RSettings menu (settings) (Y page 280) RAMG menu in AMG vehicles (Y page 287) The Audio, Navi and Tel menus differ slightly in vehicles with an audio system and in vehi- cles with COMAND Online. The examples given in this Owner's Manual apply to vehicles equipped with COMAND Online.
Trip menu Standard display
X Press and hold the % button on the steering wheel until the Trip menu with trip meter : and total distance recorder ; is shown.
Trip computer "From start" or "From reset"
Example: "From start" trip computer : Distance ; Time = Average speed ? Average fuel consumption X Press the = or ; button on the steer- ing wheel to select the Trip menu. X Press the 9 or : button to select From start or From reset. The values in the From start submenu are calculated from the start of a journey whilst
272 Menus and submenus
the values in the From reset submenu are calculated from the last time the submenu was reset (Y page 272). The From start trip computer is automati- cally reset if: Rthe ignition has been switched off for more
than four hours.
R999 hours have been exceeded. R9999 kilometres have been exceeded. The From reset trip computer is automati- cally reset if the value exceeds 9999 hours or 99,999 kilometres.
ECO display
X Press the = or ; button on the steer- ing wheel to select the Trip menu. X Press the 9 or : button to select the
current fuel consumption (not for AMG vehicles) and the approximate range.
The approximate range which can be covered depends on the fuel level and your current driving style. If there is only a small amount of fuel left in the fuel tank, the display shows a vehicle being refuelled C instead of the range.
Digital speedometer
: Gearshift recommendation, manual trans- mission (Y page 186) or automatic trans- mission (Y page 191) ; Digital speedometer X Press the = or ; button on the steer- ing wheel to select the Trip menu. X Press the 9 or : button to select the
digital speedometer.
Resetting values
Example: ECO display X Press the = or ; button on the steer- ing wheel to select the Trip menu. X Press the 9 or : button to select ECO DISPLAY. If the ignition remains switched off for longer than four hours, the ECO display will be auto- matically reset. For further information on the ECO display, see (Y page 201).
Displaying the range and current fuel consumption
Example: resetting the trip computer "From start" X Press the = or ; button on the steer- ing wheel to select the Trip menu. X Press the 9 or : button to select the
function that you wish to reset.
Menus and submenus
273
X Press the a button. X Press the : button to select Yes and press the a button to confirm.
You can reset the values of the following func- tions: Rtrip meter Rtrip computer "From start" Rtrip computer "From reset" RECO display i If you reset the values in the ECO display, the values in the "From start" trip computer are also reset. If you reset the values in the "From start" trip computer, the values in the ECO display are also reset.
Navigation menu Displaying navigation instructions In the Navi menu, the multifunction display shows navigation instructions. For more information on navigation, see the separate operating instructions. X Switch on the audio system with Becker®
MAP PILOT or COMAND Online; see the separate operating instructions. X Press the = or ; button on the steer- ing wheel to select the Navi menu.
Route guidance not active
Activating route guidance No change of direction announced
: Distance to the destination ; Distance to the next change of direction = Current road ? Symbol indicating "follow the road's
course"
Change of direction announced without a lane recommendation
: Road to which the change of direction
leads
; Distance to change of direction and visual
distance display
= Change-of-direction symbol When a change of direction is announced, you will see change-of-direction symbol = and distance graphic ;. This shortens towards the top of the display as you approach the point of the announced change of direction.
: Direction of travel ; Current road
274 Menus and submenus
Change of direction announced with a lane recommendation
Audio menu Selecting a radio station
: Road to which the change of direction
leads
; Distance to change of direction and visual
distance display
= New lane during a change of direction ? Lane continues through change of direc-
tion
A Lane recommendation B Change-of-direction symbol On multilane roads, the system can display a new lane recommendation = for the next change of direction. During the change of direction, additional lanes may be displayed. Lane recommendations are only displayed if the relevant data is available on the digital map.
Other status indicators of the naviga- tion system RO: you have reached the destination or an intermediate destination. RNew route... or Calculating route: calculating a new route ROff map or Off road: the vehicle position is outside the area of the digital map (off- map position). RNo route: no route could be calculated to the selected destination.
: Waveband ; Channel frequency with memory position i Station ; is displayed with the station frequency or station name. The memory position is only displayed along with sta- tion ; if this has been stored.
X Switch on the audio system or COMAND Online and select Radio; see the separate operating instructions. X Press the = or ; button on the steer- ing wheel to select the Audio menu. X To select a stored station: briefly press
the 9 or : button.
X To select a station from the station
list: press and briefly hold the 9
or : button.If no station list is received: X To select a station using the station search: press and briefly hold the 9
or : button.i For information on switching wavebands and storing stations, see the separate oper- ating instructions.
i DAB radio mode (Digital Audio Broadcast-
ing); see the separate operating instruc- tions.
Menus and submenus
275
Audio player or audio media operation
TV operation
Example: CD/DVD changer display : Current track Audio data from various audio devices or media can be played, depending on the equip- ment fitted in the vehicle. X Switch on the audio system or COMAND Online and select audio CD, audio DVD or MP3 mode; see the separate operating instructions. X Press the = or ; button on the steer- ing wheel to select the Audio menu. X To select the next/previous track: briefly press the 9 or : button. X To select a track from the track list
(rapid scrolling): press and hold the 9 or : button until desired track : has been reached. If you press and hold the 9 or : but- ton, the rapid scrolling speed is increased. Not all audio devices or media support this function.
If track information is stored on the audio device or medium, the multifunction display will show the number and title of the track. The current track does not appear in audio AUX mode (Auxiliary audio mode: external audio source connected).
: Channel frequency with memory position i The memory position is only displayed along with channel : if this has been stored.
X Switch on COMAND Online and select TV;
see the separate operating instructions. X Press the = or ; button on the steer- ing wheel to select the Audio menu. X To select a stored channel: briefly press
the 9 or : button.
X To select a channel from the channel
list: press and briefly hold the 9
or : button.i Storing a TV channel; see the separate
operating instructions.
i Depending on the digital TV broadcaster,
