Page 34 of 217
32Keys, doors and windows
Dirt and debris may collect on the
sunroof seal or in the track that could
cause an issue with sunroof
operation, noise or plug the water
drainage system. Periodically open
the sunroof and remove any
obstacles or loose debris. Wipe the
sunroof seal and roof sealing area
using a clean cloth, mild soap, and
water. Do not remove grease from the sunroof.
General hints Safety function
If the sunroof encounters resistance
during automatic closing, it is
immediately stopped and opened
again.
Override safety function
In the event of closing difficulties due to frost or the like, press and hold
switch 2. The sunroof closes without
safety function enabled. To stop
movement, release the switch.Initialising after a power failure
After a power failure, it may only be
possible to operate the sunroof to a
limited extent. Have the system
initialised by your workshop.
Page 48 of 217

46Seats, restraints9Warning
Keep the area in which the airbag
inflates clear of obstructions.
The hooks in the roof frame are
only suitable for hanging up light
articles of clothing, without coat
hangers. Do not keep any items in these clothes.
Airbag deactivation
The front passenger airbag system
must be deactivated if a child restraint system is to be fitted on this seat. The
side airbag and curtain airbag
systems, the belt pretensioners and
all driver airbag systems will remain
active.
The front passenger airbag system can be deactivated via a key-
operated switch on the right side of the instrument panel.
Use the ignition key to choose the
position:c=front passenger airbags are
deactivated and will not
inflate in the event of a
collision. Control indicator
c illuminates continuously
in the centre console. A child
restraint system can be
installed in accordance with
the chart Child restraint
installation locations 3 49.
No adult person is allowed to
occupy the front passenger
seat.d=front passenger airbags are
active. A child restraint
system must not be installed.9 Danger
Risk of fatal injury for a child using
a child restraint system on a seat
with activated front passenger
airbag.
Risk of fatal injury for an adult
person on a seat with deactivated
front passenger airbag.
Page 89 of 217

Instruments and controls87
Tyre pressure monitor system
3 173.
Engine oil pressure I illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly after the engine starts.
Illuminates when the engine is runningCaution
Engine lubrication may be
interrupted. This may result in
damage to the engine and/or
locking of the drive wheels.
1. Depress clutch.
2. Select neutral gear, set selector lever to N.
3. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
4. Switch off ignition.
9 Warning
When the engine is off,
considerably more force is needed
to brake and steer. During an
Autostop the brake servo unit will still be operational.
Do not remove key until vehicle is stationary, otherwise the steeringwheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 154.
Low fuel
i illuminates or flashes yellow.
Illuminates Level in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 126.
Bleeding the diesel fuel system
3 159.
Immobiliser
d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Have the cause of the fault remedied by a repairer.
Exterior light8 illuminates green.
The exterior lights are on 3 104.
High beam
C illuminates blue.
Illuminates when high beam is on or
during headlight flash 3 105 , or when
high beam is on with high beam
assist, adaptive forward lighting
3 107.
Adaptive forward lighting
f illuminates or flashes yellow.
Illuminates
The adaptive forward lighting system
needs a service.
Page 97 of 217

Instruments and controls95
■ Drive systems
■ Ride control systems
■ Cruise control
■ Object detection systems
■ Lighting, bulb replacement
■ Wiper/washer system
■ Doors, windows
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure
■ Battery
Warning chimes
When starting the engine or
whilst driving ■ If the door or bonnet is open.
■ If seat belt is not fastened.
■ If a certain speed is exceeded with parking brake applied.■ If a warning message or a warningcode appears in the Driver
Information Centre.
■ If the parking assist detects an object.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
Battery voltage When the battery voltage is running
low, a warning message or warning
code 174 will appear in the Driver
Information Centre.
1. Switch off immediately any electrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window or other main consumers.
2. Charge the battery by driving continuously for a while or by
using a charging device.The warning message or warning
code will disappear after the engine
has been started twice consecutively
without a voltage drop.
If the battery cannot be recharged,
have the cause of the fault remedied
by a workshop.
Page 108 of 217
106Lighting
Vehicles with halogen headlight
system
The adjusting screws are located
above the headlight.
Turn the adjusting screws with the
screwdriver clockwise by half a turn.
For deactivation, turn the adjusting
screws counterclockwise by half a
turn.
Caution
Have the adjustment of the
headlights checked after
deactivation.
We recommend consulting a
workshop.
Vehicles with adaptive forward
lighting system
1. Key in ignition switch.
2. Pull turn signal lever and hold (headlight flash).
3. Switch on ignition.
4. After about 3 seconds, a signal sounds.
The headlights are aimed
automatically.
Every time the ignition is switched on,
f flashes as a reminder for approx. 4
seconds.
For deactivation operate the same
procedure as described above. f will
not flash when function is
deactivated.
Control indicator f 3 87.
Daytime running lights
Daytime running lights increase
visibility of the vehicle during daylight.
They are switched on automatically
when ignition is on.
Page 114 of 217

112LightingLighting featuresEntry lighting
Welcome lighting Following lights are switched on for a
short time by unlocking the vehicle
with the radio remote control:
■ low beam,
■ sidelights,
■ tail lights,
■ reversing lights,
■ number plate lights,
■ instrument panel light,
■ interior lights.
This function works only in the dark
and facilitates locating the vehicle.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display. Vehicle
personalisation 3 98.The following lights will additionally
switch on when driver's door is
opened:
■ some switches
■ some interior lights.
Exit lighting
Low beam, sidelights and tail lights
illuminate the surrounding area for an adjustable time after leaving the
vehicle.
Switching on
Activation, deactivation and duration of lighting of this function can be
changed in the Vehicle Settings.
Vehicle personalisation 3 98.Vehicles without automatic light
1. Switch off ignition.
2. Remove ignition key.
3. Open driver's door.
4. Pull turn signal lever.
5. Close driver's door.
If the driver's door is not closed the
lights switch off after a few seconds.
The lighting is switched off
immediately if the turn signal lever is pulled while the driver's door is open.
Page 115 of 217
Lighting113
Vehicles with automatic light1. Light switch in AUTO.
2. Switch off ignition.
3. Remove ignition key.
Depending on the external lighting
conditions the exit lighting is switched
on.
Battery discharge
protection To prevent discharge of the battery
when the ignition is switched off,
some interior lights are switched off
automatically after some time.
Page 123 of 217

Driving and operating121Starting 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 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 and the cleaning process of the diesel particle filter may take
place more often. Autostop may be inhibited to allow for charging the
battery.
Diesel particle filter 3 125.Ignition switch positions0=Ignition off1=Steering wheel lock released,
ignition off2=Ignition on, for diesel engine:
preheating3=StartingStarting the engine
Manual transmission: operate clutch.
Automatic transmission: operate
brake and move the selector lever to
P or N.
Do not operate the accelerator pedal. Diesel engine: turn the key to position2 for preheating until control
indicator ! extinguishes.
Turn the key briefly to position 3 and
release: an automatic procedure
operates the starter with a short delay
as long as the engine is running, see
Automatic Starter Control.