Page 128 of 281
126LightingRear fog light
Operated by pressing r.
Light switch in position AUTO:
switching on rear fog light will switch
headlights on automatically.
Light switch in position 8: rear fog
light can only be switched on with
front fog lights.
The vehicle rear fog light is
deactivated when towing a trailer or a
plug is connected with the socket,
e.g. when a bicycle carrier is used.
Parking lights
When the vehicle is parked, the
parking lights on one side can be
activated:
1. Switch off ignition.
2. Move indicator lever all the way up
(right parking lights) or down (left
parking lights).
Confirmed by a signal and the
corresponding turn lights control
indicator.
Reversing lights
The reversing light comes on when
the ignition is on and reverse gear is
selected.
Misted light covers
The inside of the light housing may
mist up briefly in poor, wet and cold weather conditions, in heavy rain or
after washing. The mist disappears
quickly by itself; to help switch on the
headlights.
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128LightingIllustration shows rear courtesy lights.
Sunvisor lights Illuminates when the cover is opened.Lighting features
Centre console lighting A spotlight integrated in the overheadconsole illuminates the centre
console when headlights are
switched off.
The intensity can be adjusted in the
vehicle personalisation 3 115.
Entry lighting
Welcome lighting
Some or all of the following lights are
switched on for a short time by
unlocking the vehicle with the radio remote control:
● headlights
● tail lights
● interior lights
The number of activated lights
depends on the surrounding light
conditions.
The lighting switches off immediately
when the ignition is switched on.
Starting off 3 17.This function can be activated or
deactivated in the vehicle
personalisation 3 115.
The following lights will additionally
switch on when the driver's door is
opened:
● illumination of some switches
● Driver Information Centre
Exit lighting
The following lights are switched on if
the key is removed from the ignition
switch:
● interior lights
● instrument panel light
They will switch off automatically after
a delay. This function works only in
the dark.
Path lighting Headlights, tail lights and number
plate lights illuminate the surrounding
area for an adjustable time after
leaving the vehicle.
Page 131 of 281

Lighting129Activating
1. Switch off the ignition.
2. Open the driver's door.
3. Pull the indicator lever.
4. Close the driver's door.
If the driver's door is not closed, the
lights switch off after two minutes.
Exit lighting is switched off
immediately if the indicator lever is
pulled while the driver's door is open.
This function can be activated or
deactivated in the vehicle
personalisation 3 115.
Info Display 3 110.
Vehicle locator lighting
This function allows you to locate your
vehicle, e.g., in weak lighting
conditions using the remote control.
The headlights come on and the turn
lights flash for 10 seconds.
Press N on the remote control.
The vehicle must be locked more than 5 seconds.
Peripheral lighting
Peripheral lighting allows you to
switch on the position lights, low
beam and number plate lighting using the remote control.
Press G on the remote control to
switch on peripheral lighting.
Press G a second time to switch off
peripheral lighting.
Battery discharge protection
To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
Page 144 of 281

142Driving and operatingDriving and
operatingDriving hints ............................... 143
Control of the vehicle ...............143
Steering ................................... 143
Starting and operating ...............143
New vehicle running-in ............143
Ignition switch positions ...........143
Power button ........................... 144
Starting the engine ..................145
Overrun cut-off ........................ 147
Stop-start system ....................147
Parking .................................... 150
Engine exhaust .......................... 151
Exhaust filter ............................ 151
Catalytic converter ...................151
AdBlue ..................................... 152
Automatic transmission ..............155
Transmission display ...............155
Gear selection ......................... 155
Manual mode ........................... 156
Electronic driving programmes 157
Fault ........................................ 157
Eco mode ................................ 157
Manual transmission ..................158Brakes........................................ 159
Antilock brake system .............159
Parking brake .......................... 160
Brake assist ............................. 162
Hill start assist ......................... 162
Ride control systems .................163
Electronic Stability Control and Traction Control system .........163
Descent control system ...........164
Selective ride control ...............165
Driver assistance systems .........167
Cruise control .......................... 167
Speed limiter ........................... 170
Adaptive cruise control ............172
Forward collision alert .............178
Active emergency braking .......180
Front pedestrian protection .....182
Parking assist .......................... 183
Advanced parking assist .........187
Side blind spot alert .................191
Passenger side camera ...........193
Panoramic view system ...........193
Rear view camera ...................196
Lane keep assist .....................198
Driver alert ............................... 201
Fuel ............................................ 203
Fuel for petrol engines .............203
Fuel for diesel engines ............203
Refuelling ................................ 204Trailer hitch................................ 205
General information .................205
Driving characteristics and towing tips .............................. 206
Trailer towing ........................... 206
Towing equipment ...................207
Trailer stability assist ...............209
Page 145 of 281

Driving and operating143Driving hints
Control of the vehicle
Never coast with engine not
running
Many systems will not function in this
situation ( e.g. brake servo unit, power
steering). Driving in this manner is a danger to yourself and others.
All systems function during an
Autostop.
Stop-start system 3 147.
Pedals
To ensure the pedal travel is uninhibited, there must be no mats in the area of the pedals.
Use only floor mats, which fit properly
and are fixed by the retainers on the
driver side.Steering
If power steering assist is lost
because the engine stops or due to a system malfunction, the vehicle can
be steered but may require increased
effort.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and engine oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period, fuel and engine oil consumption may be
higher.
Additionally, the cleaning process of
the exhaust filter may take place more
often.
Exhaust filter 3 151.
Ignition switch positions
Turn key:
Page 146 of 281

144Driving and operating0:ignition off: some functions
remain active until key is
removed or driver's door is
opened, provided the ignition was
on previously1:ignition on power mode: ignition
is on, diesel engine is preheating, control indicators illuminate and
most electrical functions are
operable2:engine start: release key after
engine has been started
Steering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.
9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Power button
The electronic key must be inside the
vehicle.
Engine start
Operate the clutch pedal (manual
transmission), the brake pedal and
press Start/Stop .Ignition on power mode without
starting the engine
Press Start/Stop without operating
clutch or brake pedal. Control
indicators illuminate and most
electrical functions are operable.Engine and ignition off
Press Start/Stop briefly in each mode
or when engine is running and vehicle
is stationary. Some functions remain
active until driver's door is opened,
provided the ignition was on
previously.Emergency shut off during driving
Press Start/Stop for about three
seconds 3 145. Steering wheel locks
as soon as vehicle is stationary.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
To release steering wheel lock, open
and close driver's door and switch the ignition on power mode or start the
engine directly.
Page 147 of 281

Driving and operating1459Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
a message may be displayed in the
Driver Information Centre.
Hold the electronic key with buttons
outside at the marking on the steering column cover as shown in the
illustration.
Operate the clutch pedal (manual
transmission), the brake pedal and
press Start/Stop .
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 22.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 24.Starting the engine
Vehicles with ignition switch
Turn key to position 1 to release the
steering wheel lock.
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Do not operate accelerator pedal.
Diesel engines: wait until control
indicator ! extinguishes.
Page 148 of 281

146Driving and operatingTurn key briefly to position 2 and
release after engine has been
started.
Manual transmission: during an
Autostop, the engine can be started
by depressing the clutch pedal
3 147.
Automatic transmission: during an
Autostop, the engine can be started
by releasing the brake pedal 3 147.
Vehicles with power button● Manual transmission: operate clutch and brake pedal.
● Automatic transmission: operate brake pedal and move selector
lever to P or N.
● Do not operate accelerator pedal.
● Press Start/Stop button.
● Release button after starting procedure begins. Diesel engine
starts after control indicator ! for
preheating extinguishes.
● Before restarting or to switch off the engine when vehicle is
stationary, press Start/Stop once
more briefly.
To start the engine during an
Autostop:
● Manual transmission: during an Autostop, the engine can be
started by depressing the clutch
pedal 3 147.
● Automatic transmission: during an Autostop, the engine can be
started by releasing the brake
pedal 3 147.Emergency shut off during driving
If the engine needs to be switched offduring driving in case of emergency,
press Start/Stop for five seconds.9Danger
Switching off the engine during
driving may cause loss of power
support for brake and steering
systems. Assistance systems and
airbag systems are disabled.
Lighting and brake lights will
extinguish. Therefore power down the engine and ignition while
driving only when required in case of emergency.