162Driving and operatingDriving and
operatingDriving hints ............................... 163
Control of the vehicle ...............163
Steering ................................... 163
Starting and operating ...............163
New vehicle running-in ............163
Power button ........................... 164
Retained power off ..................165
Starting the engine ..................165
Overrun cut-off ........................ 167
Stop-start system ....................167
Parking .................................... 169
Engine exhaust .......................... 170
Diesel particle filter ..................170
Catalytic converter ...................171
AdBlue ..................................... 172
Automatic transmission ..............175
Manual transmission ..................179
Drive systems ............................ 180
All-wheel drive ......................... 180
Brakes ........................................ 180
Antilock brake system .............180
Parking brake .......................... 181Brake assist............................. 182
Hill start assist ......................... 183
Ride control systems .................184
Traction Control system ..........184
Electronic Stability Control ......185
Interactive driving system ........186
Driver assistance systems .........189
Cruise control .......................... 189
Speed limiter ........................... 190
Adaptive cruise control ............192
Forward collision alert .............200
Following distance indication ...202
Active emergency braking .......203
Front pedestrian protection .....206
Parking assist .......................... 209
Side blind spot alert .................215
Lane change alert ....................217
Panoramic view system ...........219
Rear view camera ...................221
Rear cross traffic alert .............223
Traffic sign assistant ................224
Lane keep assist .....................229
Fuel ............................................ 231
Fuel for petrol engines .............231
Fuel for diesel engines ............232
Refuelling ................................ 233
Trailer hitch ................................ 235
General information .................235Driving characteristics and
towing tips .............................. 235
Trailer towing ........................... 235
Towing equipment ...................236
Trailer stability assist ...............238
Driving and operating171indicated by illumination of% and a
warning message in the Driver
Information Centre.
% illuminates along with a warning
message illuminates when diesel
particle filter is full. Start cleaning process as soon as possible.
% flashes along with a warning
message when diesel particle filter
has reached the maximum filling
level. Start cleaning process
immediately to avoid damage to the engine.
Activate self-cleaning process
To activate cleaning process,
continue driving, keep engine speed
above 2000 rpm. Shift down if
necessary. Diesel particle filter
cleaning is then started.
Cleaning takes place quickest at high
engine speeds and loads.
Control indicator % extinguishes as
soon as the self-cleaning operation is complete. Keep on driving until self-
cleaning operation is complete.Caution
If possible, do not interrupt
cleaning process. Drive until
cleaning is completed to avoid the need for service or repair by a
workshop.
Cleaning process not possible
If cleaning is not possible for anyreasons, control indicator Z
illuminates and a warning message
appears in the Driver Information
Centre. Engine power may be
reduced. Seek the assistance of a
workshop immediately.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.
Caution
Fuel grades other than those listed on pages 3 231, 3 294 could
damage the catalytic converter or
electronic components.
Unburnt petrol will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
180Driving and operatingDrive systems
All-wheel drive
The All-wheel drive system enhances
driving characteristics and stability,
and helps to achieve the best
possible driveability regardless of
ground surface. The system is always
active and cannot be deactivated.
The torque is distributed steplessly
between the wheels of the front and
rear axle up to a torque split of 50%
to 50%. Depending on the driving
conditions, i.e. steady state driving,
All wheel drive system transfers a
minimum amount of torque for fuel
efficiency. Additionally the torque
vectoring between the rear wheels is
distributed depending on the vehicle
dynamic and surface.
This is possible because the All wheel drive system operates with two
clutches, one on each side.
For optimum system performance,
the vehicle's tyres should not have
varying degrees of wear.If a service message is displayed in
the Driver Information Centre, the
system may have limited functionality
(or be completely disabled in some
cases, i.e. the vehicle switches to
Front-wheel drive). Seek the
assistance of a workshop.
Towing the vehicle 3 279.Brakes
The brake system comprises two independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when the brake pedal
is depressed firmly. Considerably
more force is needed for this. The braking distance is extended. Seek
the assistance of a workshop before
continuing the journey.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has
been depressed once or twice.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear this in mind when being towed.
Control indicator R 3 109.
Active emergency braking 3 203.
Antilock brake system Antilock brake system (ABS)
prevents the wheels from locking.
208Driving and operatingIf this happens, automatic braking
may engage the Electric parking
brake to hold the vehicle at a stop.
Release the parking brake. A firm
press of the accelerator pedal will
also release Automatic braking and
Electric parking brake 3 181.
This system includes Intelligent brake assist, and the Emergency automatic
braking system may also respond to
pedestrians. See Active emergency
braking 3 203.
Automatic braking can be disabled in the vehicle personalisation menu
3 127.
General information9 Warning
The driver must always be ready
to take action and apply the brakes and steer to avoid collisions.
9 Warning
Front pedestrian braking may alert
or automatically brake the vehicle
suddenly in situations where it is
unexpected and undesired. It
could falsely alert or brake for
objects similar in shape or size to
pedestrians, including shadows.
This is normal operation and the
vehicle does not need a service.
To override Automatic braking,
firmly depress the accelerator
pedal, if it is safe to do so.
9 Warning
Using the Front pedestrian braking
system while towing a trailer couldcause loss of vehicle control and
crash. Turn the system to Alert or
Off in the vehicle personalisation
when towing a trailer. Vehicle
personalisation 3 127.
System limitations
In the following cases, front
pedestrian protection may not detect
a pedestrian ahead or sensor
performance is limited:
● Vehicle speed is out of range from 8 km/h to 80 km/h in forwardgear.
● The distance to an pedestrian ahead is more than 40 metres.
● Driving on winding or hilly roads.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The sensor in the windscreen is blocked by snow, ice, slush, mud,dirt, windscreen damage or
affected by foreign items, e.g.
stickers.