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Lighting133
Light switch in position AUTO:
switching on front fog lights will switch headlights on automatically.
Rear fog lights
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.
Parking lights
When the vehicle is parked, the
parking lights on one side can be
activated:
1. Switch off ignition.
2. Move turn signal lever all the way up (right parking lights) or down
(left parking lights).
Confirmed by a signal and the
corresponding turn signal 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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Lighting135
On vehicles with panoramaroof, rear
interior lights are located near the rear
handles.
Switch on reading lights by pressing
< on the cover.
Sunvisor lights
Illuminates when the cover is opened.Lighting features
Centre console lighting Spotlight incorporated in the interior
lighting comes on when headlights are switched on.
Entry lighting
Welcome lighting
Headlights, tail lights, number plate
lights, instrument panel light, interior
lights and puddle lights are switched
on for a short time by unlocking the
vehicle with the radio remote control.
This function works only in the dark
and facilitates locating the vehicle.
The lighting switches off immediately
when the ignition is switched on.
Starting off 3 16.
This function can be activated or
deactivated in the Vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
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136Lighting
Vehicle personalisation 3 122.
The settings can be saved for the key
being used 3 23.
The following lights will additionally
switch on when the driver's door is
opened:
■ all switches
■ Driver Information Centre
■ door pocket lights
Exit lighting The following lights switch on if the
key is removed from the ignition
switch:
■ interior lights
■ instrument panel light
■ puddle lights
They will switch off automatically after
a delay. This function works only in
the dark. Theatre lighting is activated
if the driver's door is opened during
this time.
Headlights, tail lights and number
plate lights illuminate the surrounding area for an adjustable time after
leaving the vehicle.
Switching on 1. Switch off the ignition.
2. Remove the ignition key.
3. Open the driver's door.
4. Pull the turn signal lever.
5. 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 turn signal lever is
pulled while the driver's door is open.
This function can be activated or
deactivated in the Vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 122.
The settings can be saved for the key being used 3 23.
Battery discharge
protection
Vehicle battery state of charge
function
The function guarantees longest vehicle battery life via a generator with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in two stages and finally switched off:
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Lighting137
■ auxiliary heater
■ heated rear window and mirrors
■ heated seats
■ fan
In the second stage, a message
which confirms the activation of the
vehicle battery discharge protection
will be displayed in the Driver
Information Centre.
Switching off electric lights
To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
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Driving and operating153Starting 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.
Diesel particle filter 3 160.
Ignition switch positions
Turn key:0=ignition off: Some functions
remain active until key is removed or driver's door is
opened, provided the ignition was
on previously1=accessory power mode: Steering
wheel lock released, some
electrical functions are operable,
ignition is off2=ignition on power mode: Ignition
is on, diesel engine is preheating. Control indicators illuminate and
most electrical functions are
operable3=engine start: Release key after
starting procedure beginsSteering 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
Electronic key must be inside the
vehicle.
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154Driving and operating
Accessory power mode: press
Engine Start/Stop once without
operating clutch or brake pedal. The yellow LED in the button illuminates.
Steering wheel lock is released and
some electrical functions are
operable, ignition is off.
Ignition on power mode: press and
hold Engine Start/Stop for 6 seconds
without operating clutch or brake
pedal. The green LED in the button
illuminates, diesel engine is
preheating. Control indicators
illuminate and most electrical
functions are operable.
Engine start: operate clutch pedal
(manual transmission) or brake pedal
(automatic transmission) and press
Engine Start/Stop once more.
Release button after starting
procedure begins.
Ignition off: press Engine 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 Engine Start/Stop for longer
than 2 seconds or press twice briefly
within 5 seconds 3 155.
Steering wheel lock
The steering wheel lock activates
automatically when:
■ The vehicle is stationary.
■ The ignition has been switched off.
■ The driver's door is opened.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.9 Warning
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,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.
Open the centre console storage area by lifting up the armrest. Place the
electronic key in the transmitter
pocket. Depress the clutch pedal
(manual transmission) or the brake
pedal (automatic transmission) and
press Engine Start/Stop .
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Driving and operating155
To switch off the engine, press
Engine Start/Stop again. Remove the
electronic key from the transmitter
pocket.
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 23.
Retained power off
The following electronic systems can
work until the driver's door is opened
or for 10 minutes after the ignition is
switched off:
■ power windows
■ sunroof
■ power outletsStarting the engine
Vehicles with ignition switch
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 engine: turn the key to position 2 for preheating until control
indicator ! extinguishes.
Turn key briefly to position 3 and
release: an automatic procedure operates the starter with a short delay
until the engine is running, see
Automatic Starter Control.
During an Autostop, the engine can
be started by depressing the clutch
pedal 3 157.
Vehicles with power button
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
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156Driving and operating
Do not operate accelerator pedal.
Press and release Engine Start/Stop:
an automatic procedure operates the
starter with a short delay until the
engine is running, see Automatic
Starter Control.
Before restarting or to switch off the engine when vehicle is stationary, press Engine Start/Stop once more
briefly.
During an Autostop, the engine can
be started by depressing the clutch
pedal 3 157.
Emergency shut off during
driving If the engine needs to be switched offduring driving in case of emergency,
press Engine Start/Stop for longer
than 2 seconds or press twice briefly
within 5 seconds.9 Danger
Switching off the vehicle engine
during driving may cause loss of
power support of brake and
steering systems. Assistance
systems and airbag systems are
disabled. Lighting and brake lights will extinguish. Therefore powerdown the engine and ignition while
driving only in case of vehicle
emergency.
Starting the vehicle at low
temperatures
Starting the engine without additional heaters is possible down to -25 °С for
diesel engines and -30 °C for petrol
engines. Required is an engine oil
with the correct viscosity, the correct
fuel, performed services and a
sufficiently charged vehicle battery.
With temperatures below -30 °C the
automatic transmission requires a
warming phase of approx. 5 minutes.
The selector lever must be in position
P .
Automatic Starter Control
This function controls the engine
starting procedure. The driver does
not need to hold the key in position 3
or to hold Engine Start/Stop pressed.
Once applied, the system will go on
starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running
after a short delay.
Possible reasons for a non-starting
engine:
■ Clutch pedal not operated (manual transmission).
■ Brake pedal not operated or selector lever not in P or N
(automatic transmission).
■ Timeout occurred.
Turbo engine warm-up Upon start-up, engine available
torque may be limited for a short time, especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.
Overrun cut-off The fuel supply is automatically cut-
off during overrun, i.e. when the
vehicle is driven with a gear engaged
but accelerator pedal is released.