If it is possible and safe, drive straight down the slope in the fall line (maximum gradient).
Do not press the clutch and do not select neutral.
WARNING
Never try driving up or down an incline if it is too steep for the vehicle. The vehicle could slide away,
tip over or roll.
The uphill or downhill gradient must be no greater than the maximum permissible gradient for the
vehicle.
Always drive up and down gradients in the fall line.
Never turn the vehicle when driving up or down gradients. The vehicle could tip over or slide away
sideways.
If the engine stops or if you cannot drive on for any reason, stop the vehicle and depress the brake
pedal. Start the engine again. Select reverse gear, release the brake pedal and using the engine
braking effect to carefully reverse in a straight line along the fall line. Keep the vehicle speed low and
constant.
If you are unable to start the engine, keep your foot steady on the brake pedal and allow the vehicle
to roll back down the track you made when driving up the hill. Keep the vehicle speed low and
constant.
Never let the vehicle roll backwards down a slope in neutral. You could lose control over the vehicle.
Traversing a slope
Fig. 115 Steering into the fall line.
If you make a mistake when rocking free the vehicle, it can sink deeper and you will need assistance
to free the vehicle.
When you cannot move forwards
Carefully dig out all the wheels and check that no other parts of the vehicle are stuck in the sand.
Select reverse gear.
Reverse in your own tracks with gentle use of the accelerator.
If this does not help, place brushwood, foot mats or sacking directly in front of the wheels to
increase grip ⇒ .
Rocking the vehicle free
Never allow the wheels to spin for long periods as this will cause the vehicle to sink deeper ⇒ .
Switch off TCS ⇒ Brake support systems .
Position the steering wheel so that it is facing straight ahead.
Reverse until the point where the wheels just start to spin.
Immediately select first gear and drive forwards until the wheels start to spin again.
Repeat driving back and forth until you have enough momentum to free yourself.
Switch the TCS on after the rocking free procedure is completed ⇒ Brake support systems .
Use the Offroad driving profile.
WARNING
No one must stand either in front or behind the vehicle, particularly if you are attempting to free a
stuck vehicle.
Spinning wheels can propel stones, brushwood, pieces of wood or other objects that are in front or
behind the wheels at enormous speed and cause potentially fatal injury.
People standing in front of or behind the vehicle could be run over if the stuck vehicle starts to move
suddenly.
After offroad driving
First read and observe the introductoryinformation and safety warnings⇒Introduction
Checklist
Clean the turn signals, lighting system, the number plate and all windows.
⇒ Operating the speed limiter with the multifunction steering wheel
⇒ Troubleshooting
The speed limiter helps you to stop exceeding a stored speed.
Speed range
The speed limiter is available when driving forwards at speeds from approx. 30 km/h (20 mph).
Driving with the speed limiter
You can interrupt the speed limiter at any time by depressing the accelerator all the way down past
the point of resistance. As soon as the stored speed is exceeded, the green indicator lamp will
flash and an acoustic warning may sound. The speed remains stored in the memory.
The speed limiter function switches back on automatically as soon as the speed drops back below
the stored speed.
Displays
When the speed limiter is switched on, the instrument cluster display shows the stored speed and
the status of the speed limiter:
Shown small or grey: speed limiter not active.Shown large or white: speed limiter active.
Driving downhill
Driving downhill may cause the set speed to be exceeded.
Apply the foot brake to slow the vehicle down, and change down a gear as required.
WARNING
Always switch off the speed limiter after use to avoid unintentional speed control.
The speed limiter does not relieve the driver of their responsibility for the speed of the vehicle. Do
not drive at full throttle if this is not required.
Use of the speed limiter in adverse weather conditions is dangerous and can cause serious injury,
e.g. through aquaplaning, snow, ice, or leaves. Use the speed limiter only when the road and
weather conditions allow it to be used safely.
The speed limiter cannot limit the vehicle speed when travelling downhill. The vehicle speed can
increase under its own weight. Select a lower gear or use the foot brake to slow the vehicle down.
Operating the speed limiter with the multifunction steering wheel
Fig. 117 Left-hand side of the multifunction steering wheel: buttons for operating the speed limiter.
First read and observe the introductoryinformation and safety warnings⇒Introduction
Switching on
Press the button.
The speed last set remains stored. There is no control yet.
Starting control
While driving, press the button.
The current speed is stored as the maximum speed. The green indicator lamp .
Setting the speed
You can adjust the stored speed:
+ 1 km/h (1 mph)-1 km/h (1 mph)+ 10 km/h (5 mph)- 10 km/h (5 mph)
To continuously adjust the stored speed, press and hold the button or .
Interrupting control
Press the button.
The speed remains stored in the memory.
Resuming control
Press the button.
The speed limiter is automatically reactivated as soon as the current speed is lower than the stored
speed.
Switching off
Press and hold the button.
The speed limiter is switched off, the speed remains stored (even after the ignition is switched off).
Fig. 121 Left-hand side of the multifunction steering wheel: buttons for operating ACC.
First read and observe the introductoryinformation and safety warnings⇒Introduction
Switching on ACC
Press the button.
The indicator lamp lights up grey, ACC does not regulate.
Starting control
Press the button while driving forwards.
ACC stores the current speed and maintains the set distance. If the current speed is outside the
defined speed range, ACC will set the minimum speed (when driving more slowly than the limit) or
maximum speed (when driving faster than the limit).
The following indicator lamps light up, depending on the driving situation:
ACC regulating.No vehicle has been detected ahead.Vehicle detected ahead (white).
Interrupting control
Briefly press the button or press the brake pedal.
The indicator lights up grey, the speed and distance remain stored.
Control is automatically interrupted if the traction control system (TCS) is deactivated.
Resuming control
Press the button.
ACC adopts the last set speed and last set distance. The instrument cluster display shows the set
speed and the indicator lamp lights up green.
Switching off ACC
Press and hold the button.
The set speed is deleted.
Changing to the speed limiter
Press the button.
ACC is switched off.
Setting ACC
Fig. 122 On the instrument cluster display: setting the distance (illustration, ACC regulating).
First read and observe the introductoryinformation and safety warnings⇒Introduction
Setting the distance
You can set the distance in five steps from very small to very large:
Press the button and then the or button.
Alternatively, press the button as often as necessary until the desired distance is set.
The instrument cluster display shows the chosen distance setting ⇒ Fig. 122① . Please observe any
country-specific requirements for the minimum distance.
You can set the distance which should be set at the start of control operation in the vehicle settings
of the Infotainment system ⇒ Vehicle settings menu .
If ACC is not regulating, the set distance and vehicle are not highlighted on the instrument cluster
display.
Setting the speed
You can adjust the stored speed within the defined speed range by means of the buttons on the
multifunction steering wheel:
+ 1 km/h (1 mph)- 1 km/h (1 mph)+ 10 km/h (5 mph)- 10 km/h (5 mph)
Press and hold the corresponding button to continuously change the stored speed.
Setting the control behaviour
Vehicles with driving profile selection: set the desired driving profile ⇒ Driving profile selection
and 4MOTION Active Control .
Vehicles without driving profile selection: set the desired gearbox programme in the vehicle
settings of the Infotainment system ⇒ Vehicle settings menu .
The brakes have overheated, control was interrupted automatically. Allow the brakes to cool down
and check functioning again.
If the problem persists, go to a qualified workshop.
Control cannot be started.
A forward gear other than first gear is selected (manual gearbox) or the selector lever is in selector
lever position D/S or the Tiptronic gate.
The speed is at least 25 km/h (16 mph) in the case of vehicles with manual gearbox.
The brake lights on the vehicle and trailer ⇒ are working.
ESC is not regulating.
The brake pedal is not depressed.
Unusual noises during automatic braking.
This is normal and is not a fault.
Area monitoring system (Front Assist)
Introduction
This chapter contains information on the followingsubjects:
⇒ Warning levels and braking intervention
⇒ Limits of Front Assist
⇒ Pedestrian Monitoring
⇒ Operating the area monitoring system (Front Assist)
⇒ Troubleshooting
The area monitoring system (Front Assist) with City Emergency Braking System and Pedestrian
Monitoring can help to avoid accidents.
Within the limits of the system, Front Assist can warn the driver about imminent collisions, prepare
the vehicle for emergency braking, assist with braking, and initiate automatic braking. The warning
time varies depending on the traffic situation and driver behaviour.
Front Assist is not a substitute for the full concentration of the driver.
Driving with Front Assist
You can cancel the automatic braking interventions of Front Assist by steering or pressing the
accelerator.
Automatic braking
Front Assist can decelerate the vehicle to a standstill. The vehicle will then not be held permanently.
Depress the brake pedal.
If the problem persists, switch off Front Assist and go to a qualified workshop.
Lane keeping system (Lane Assist)
Introduction
This chapter contains information on the followingsubjects:
⇒ Driving with the lane keeping system
⇒ Troubleshooting
The lane keeping system (Lane Assist) helps the driver stay in lane.
Using a camera in the windscreen, the lane departure warning system detects lane markings on the
road. If your vehicle moves too close to a recognised lane marking, the system will warn the driver
with a corrective steering intervention. The corrective steering intervention can be overridden by
the driver at any time.
Adaptive lane guidance (depending on vehicle equipment)
The adaptive lane guidance system detects the preferred position in a lane and keeps the vehicle in
this position.
Adaptive lane guidance is switched on and off in the Driver assistance menu in the Infotainment
system ⇒ Vehicle settings menu .
System limits
Use the lane keeping system only on motorways and good main roads.
The system is not active under the following conditions:
The lane keeping system has not detected any lane markings.
WARNING
The intelligent technology used in the lane keeping system cannot overcome the laws of physics, and
functions only within the limits of the system. Always take care when using the lane departure
warning system otherwise you could cause accidents or injuries. The system is not a substitute for
the full concentration of the driver.
Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and traffic
conditions.
Your hands should always be on the steering wheel so that you can steer at any time. The driver is
always responsible for staying in lane.
The lane keeping system cannot recognise all lane markings. Poor road surfaces, road structures or
objects could be recognised incorrectly as lane markings by the lane keeping system. The lane
keeping system should be switched off immediately in these situations.
Follow the information on the instrument cluster display and respond according to the commands.