Page 268 of 345
266Vehicle care
2. Unscrew the plastic securing nutby hand.
3. Carefully withdraw the lightassembly from the recesses and
remove. Take care that the cable
duct remains in position.
4. Turn the bulb socket anticlockwise and remove it from
the light assembly.
Rear fog light ( 1)
Reverse light ( 2)
5. Detach the bulb from the bulb socket and replace the bulb.
Rear fog light
Page 269 of 345
Vehicle care267Reverse light
6. Insert the bulb socket into the tail light assembly. Fit light assembly
on the tailgate and tighten the
screw from the inside. Attach
cover.
Sports Tourer, Country Tourer
Light assembly in the body
1. Open the covers with screwdriver.
Unscrew and remove both
screws.
2. Carefully withdraw tail light assembly from recess and
remove. Take care that the cable
duct remains in position.
3. Turn the turn signal light bulb socket anticlockwise and removeit from the light assembly.
4. Detach the bulb from the bulb socket and replace the turn signal
light bulb.
5. Attach the bulb socket to the light assembly.
6. Attach the light assembly to the vehicle body and tighten the
screws. Close covers.
Page 270 of 345
268Vehicle careLight assembly in the tailgate
1. Release the cover in the tailgateand remove it.
2. Unscrew the plastic securing nutby hand.
3. Carefully withdraw the lightassembly from the recesses and
remove. Take care that the cable
duct remains in position.
4. Turn the bulb socket anticlockwise and remove it from
the light assembly.
Rear fog light ( 1)
Reverse light ( 2)
5. Detach the bulb from the bulb socket and replace the bulb.
Rear fog light
Page 271 of 345
Vehicle care269
Reverse light
6. Insert the bulb socket into the tail light assembly. Fit light assembly
on the tailgate and tighten the
screw from the inside. Attach
cover.
Side turn lights
To replace bulb, remove lamp
housing:
1. Slide lamp to its left side and remove with its right end.
2. Turn bulb holder anticlockwiseand remove from housing.
3. Pull bulb from bulb holder and replace it.
Page 272 of 345

270Vehicle care4. Insert bulb holder and turnclockwise.
5. Insert left end of the lamp, slide to
the left and insert right end.
Number plate light
The number plate light is designed as
LEDs and can not be changed. In
case of defective LEDs, have them
replaced by a workshop.
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.Electrical system
Fuses Data on the replacement fuse must
match the data on the defective fuse.
There are three fuse boxes in the
vehicle:
● engine compartment
● instrument panel
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised by its melted wire.Caution
Do not replace the fuse until the
cause of the fault has been
remedied.
Some functions are protected by
several fuses.
Fuses may also be inserted without
existence of a function.
Fuse extractor
A fuse extractor may be located in the
fuse box in the engine compartment.
Page 274 of 345
272Vehicle careNo.Circuit1–2–3ABS4–5–6Tailgate7Fog light8Memory module9Heated windscreen10Seat lumbar11DC/DC battery12Heated rear window13Heated mirror14–15–16Front wiper17Power seat, passengerNo.Circuit18Sunblind19Power seat, driver20–21Sunroof22Rear wiper/Airbag23Adaptive forward lighting24–25–26Transmission control module27Ignition/Instrument panel28–29Rear view camera/Air vent30Malfunction indicator light/
Trailer31–32Camera33Seat heat front34Seat heat rearNo.Circuit35Damping/All-wheel drive36Fuel system37–38–39–40Steering wheel lock41–42–43Heated steering wheel44Headlight range adjustment45–46Engine control module47–48DC/DC converter/Air vent/E-
Boost49Rear door control module50–51–
Page 277 of 345
Vehicle care275No.Circuit18Body control module19AdBlue module20Body control module21Body control module22Body control module23Electric steering wheel lock24Airbag25Diagnostic connector26Power outlet load compartment27EBCM valve28Police provision29–30–31Steering wheel controls32Ignition switch33Climate control34Central gateway moduleNo.Circuit35AUX/USB connector36Wireless charger37Rear wiper38OnStar module39Display40Parking assist41Overhead console42Infotainment SystemVehicle tools
Tools
Vehicles with spare wheel
The jack with wheel wrench, the tools,
an extension bolt for securing a
damaged wheel and the towing eye
are placed in the tool box below the
spare wheel in the load compartment. Spare wheel 3 288.
Page 284 of 345

282Vehicle care9Warning
Use of unsuitable tyres or wheel
covers could lead to sudden
pressure loss and thereby
accidents.
Vehicles with steel wheels: When
using locking wheel nuts, do not
attach wheel covers.
Tyre chains
Tyre chains are only permitted on the
front wheels.
Always use fine mesh chains that add no more than 10 mm to the tyre tread
and the inboard sides (including chain lock).9 Warning
Damage may lead to tyre blowout.
Tyre chains are only permitted on
tyres of size 215/60 R16, 215/55 R17 ,
225/55 R17 and 235/45 R18.
Temporary spare wheel
The use of tyre chains is not permitted on the temporary spare wheel.
Tyre repair kit
Minor damage to the tyre tread can be
repaired with the tyre repair kit.
Do not remove foreign bodies from
the tyres.
Tyre damage exceeding 4 mm or that is at tyre's side wall cannot be
repaired with the tyre repair kit.
9 Warning
Do not drive faster than 50 mph.
Do not use for a lengthy period.
Steering and handling may be
affected.
Two types of tyre repair kit are
available:
● Type 1 indicated by the on/off
switch at the top of the
compressor.