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118LightingReversing lightsThe 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.Interior lighting
Instrument panel
illumination control
Brightness of the following lights can
be adjusted when the exterior lights
are on:
■ instrument panel illumination
■ ambient light
■ dome light
■ Info-Display
■ illuminated switches and operation elements
Turn thumb wheel A and hold until
the desired brightness is obtained.
On vehicles with light sensor, the
brightness can only be adjusted when
the exterior lights are on and the light sensor detects night conditions.
Interior lights
During entry and exit of the vehicle,
the front and rear courtesy lights
automatically switch on and then off
after a delay.
Notice
In the event of an accident with
airbag deployment the courtesy
lights are turned on automatically.
Page 121 of 255

Lighting119
Front courtesy light
Operate rocker switch:
w=automatic switching on
and offpress u=onpress v=off
Dome light
Spotlight incorporated in the interior
lighting comes on when headlights
are switched on.
Ambient light Ambient light consists of indirect
lights in the doors and around the
gear selector lever.
Ambient light can be dimmed using
thumb wheel A together with the
instrument panel illumination 3 118.
It is also activated with Entry lighting
3 119 and Exit lighting 3 120.
Reading lights
Operated with s
and t buttons in
courtesy lights.
Sunvisor lights Illuminates when the cover is opened.
Lighting features
Entry lighting
Welcome lighting
The following lights are switched on
for a short time by unlocking the
vehicle with the radio remote control:
■ headlights
■ tail lights
■ number plate lights
■ instrument panel light
■ interior lights
■ puddle lights
Some functions work only in the dark
and facilitates locating the vehicle.
The lighting switches off immediately
when the ignition key is turned to
position 1 3 133.
The following lights will additionally
switch on when the driver's door is
opened:
■ all switches
■ Driver Information Centre
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120Lighting
■ door pocket lights
■ console lights
Activation, deactivation and duration
of this function can be changed in the
Info-Display. Vehicle personalisation
3 104.
The settings can be saved for the key being used 3 22.
Exit lighting The following lights switch on if the
key is removed from the ignition
switch:
■ interior lights
■ instrument panel light (only when it is dark)
■ door and console lights
■ puddle lights
They will switch off automatically after
a delay and will be activated again if
the driver's door is opened.
Headlights, tail lights and number
plate lights illuminate the surrounding area for an adjustable time after
leaving the vehicle.Path lighting
Headlights, tail lights and number
plate lights illuminate the surrounding
area for an adjustable time after
leaving the vehicle.
Activating
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 two minutes.
Exit lighting is switched off
immediately if the turn signal lever is pulled while the driver's door is open.
Activation, deactivation and duration
of this function can be changed in the Info-Display. Vehicle personalisation
3 104.
The settings can be saved for the key being used 3 22.
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:
■ auxiliary heater
■ heated rear window and mirrors
Page 201 of 255
Vehicle care199
4. Insert bulb holder and turnclockwise.
5. Insert left end of the lamp, slide to
the left and insert right end.
Number plate light
1. Insert screwdriver in recess of the
cover, press to the side and
release spring.
2. Remove lamp downwards, taking care not to pull on the cable.
3. Remove bulb holder from lamphousing by turning anticlockwise.
4. Pull bulb from bulb holder and replace it.
5. Insert bulb holder into lamphousing and turn clockwise.
6. Insert lamp into bumper and let engage.
Interior lights Courtesy light, reading lights
Have bulbs replaced by a workshop.
Load compartment light Have bulbs replaced by a workshop.
Instrument panel
illumination
Have bulbs replaced by a workshop.
Page 204 of 255

202Vehicle care
No.Circuit17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear eletrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS pump31–32AirbagNo.Circuit33Adaptive forward lighting, auto‐
matic light control34Exhaust gas recirculation35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47HornNo.Circuit48Radiator fan49Fuel pump50Headlamp levelling, adaptive
forward lighting51–52Auxiliary heater, diesel engine53Transmission control module,
Engine control module54Vacuum pump, instrument
panel cluster, heating ventila‐
tion, air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Page 205 of 255
Vehicle care203Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox, then
open the cover and fold it down.
No.Circuit1Displays2Body control unit, exterior lights3Body control unit, exterior lights4Infotainment system5Infotainment system, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Body control module, left low
beam9Body control module, right low
beam10Body control module, door locks11Interior fan12Driver power seat13Passenger power seat14Diagnostic connector15Airbag
Page 206 of 255
204Vehicle care
No.Circuit16Boot lid relay17Air conditioning system18Service diagnose19Body control module, brake
lights, tail lights, interior lights20-21Instrument panel22Ignition system23Body control module24Body control module25–26Trunk power outlet accessory
Load compartment fuse
box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
Fuse assignments
No.Circuit1Soft top control module, power
rail right2–3Parking assist4Selective catalytic reduction
system5–6–7Power seat8Soft top control module9Selective catalytic reduction
system10Selective catalytic reduction
system11Trailer module, tyre pressure
monitor and rear view camera12Soft top control module, tail
lights13–
Page 229 of 255

Vehicle care227
UnderbodySome areas of the vehicle underbody
have a PVC undercoating while other critical areas have a durable
protective wax coating.
After the underbody is washed, check
the underbody and have it waxed if
necessary.
Bitumen/rubber materials could
damage the PVC coating. Have
underbody work carried out by a
workshop.
Before and after winter, wash the
underbody and have the protective
wax coating checked.
Towing equipment
Do not clean the coupling ball bar with
a steam-jet or high-pressure jet
cleaner.
Interior care Interior and upholsteryOnly clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.Clean the leather upholstery with
clear water and a soft cloth. In case of
heavy soiling, use leather care.
The instrument cluster and the
displays should only be cleaned using
a soft damp cloth. If necessary use a weak soap solution.
Clean fabric upholstery with a
vacuum cleaner and brush. Remove
stains with an upholstery cleaner.
Clothing fabrics may not be
colourfast. This could cause visible discolourations, especially on light-
coloured upholstery. Removable
stains and discolourations should be
cleaned as soon as possible.
Clean seat belts with lukewarm water or interior cleaner.Caution
Close Velcro fasteners as open
Velcro fasteners on clothing could damage seat upholstery.
The same applies to clothing with
sharp-edged objects, like zips or
belts or studded jeans.
Plastic and rubber parts
Plastic and rubber parts can be
cleaned with the same cleaner as
used to clean the body. Use interior cleaner if necessary. Do not use any
other agent. Avoid solvents and petrol in particular. Do not use high-
pressure jet cleaners.