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Vehicle care2132. Slacken the lamp fixing nut usinga box spanner or socket.
3. Manually unscrew and remove the lamp fixing nut.
4. Disengage the retaining clip, while pushing the light assembly
out slightly.
5. From the outside, carefully withdraw light assembly from
recess and remove. Take care
that the cable duct remains in
position.
6. Turn the bulb socket anticlockwise and remove it from
the light assembly.
7. Detach the bulb from the bulb socket and replace the bulb:
Reverse light ( 1)
Rear fog light ( 2)
8. Insert the bulb socket into the light
assembly. Fit the light assembly in the recess and tighten the lamp
fixing nut from the inside. Attach
the cover.
Centre high-mounted brake light The centre high-mounted brake light
is designed as LED and can not be
changed.
Have lights repaired by a workshop in
case of failure.
Bulb check
Switch on the ignition, operate and
check all lights.
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214Vehicle careSide turn lightsTo replace bulb, remove lamp
housing:
1. Slide lamp to its left side and remove with its right end.
2. Turn bulb socket clockwise andremove from housing.
3. Detach the bulb from the bulb socket and replace the bulb.
4. Insert bulb socket and turnanticlockwise.
5. Insert left end of the lamp, slide to
the left and insert right end.
Number plate light Number plate lights are designed as
LEDs and can not be changed.
Have lights repaired by a workshop in
case of failure.
Interior lightsHave the following bulbs replaced by
a workshop:
● courtesy light, reading lights
● load compartment light
● instrument panel illumination
Page 218 of 271
216Vehicle careEngine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover and remove it. Depending on the version, different
engine compartment fuse boxes are
available:
No.Circuit9Anti-theft alarm system10Stop-start system11Diesel exhaust system13Stop-start system15Electric power steering / Radar22Horn29StarterNo.Circuit1Climate control2Steering wheel4Electric parking brake6Air vent16Front fog lights18Right high beam (Halogen) /
Right headlight (LED)19Left high beam (Halogen) /
Right headlight (LED)21Starter
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Vehicle care217No.Circuit22Heated windscreen26Additional Heater / Heated
windscreen
After having changed defective fuses,
close the fuse box cover and lock it.
If the fuse box cover is not closed
correctly, malfunction may occur.
Instrument panel fuse box
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover.
Depending on the version, different
instrument panel fuse boxes are
available:No.Circuit1Electronic key system / Anti-
theft alarm system4Stop-start system5Advanced parking assist /
Camera / Transmission control
module7Amplifier8Rear wiperNo.Circuit10Central locking system11Central locking system13Anti-theft alarm system16Electrical power steering wheel18OnStar21Interior lights22Glovebox light23Blind spot alert system / Exterior
mirror adjustment / Inductive
charging24Column electrical assembly25Interior mirror26Seat belt reminder27Camera / Rain sensor / Auto‐
matic light control28USB / Infotainment31Airbag
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218Vehicle careNo.Circuit33Power outlet front36InfotainmentNo.Circuit1Interior mirror / Electrical power
steering wheel / Selective ride
control / Radar / Diesel exhaust
system3Trailer provisions control
module4HornNo.Circuit5Windscreen washer6Windscreen washer7Power outlet rear10Doors lock / Tailgate lock11Doors lock / Tailgate lock12Stop-start system / Diagnostic
connector module / Brake
system13Infotainment / Climate control
system14Alarm siren15Climate control system16Stop-start system / Brake
system17Instrument cluster19Column electrical assembly /
Steering wheel controls21Anti-theft alarm systemNo.Circuit22Camera / Rain sensor / Auto‐
matic light control23Seat belt reminder24Automatic transmission /
Advanced parking assist /
Panoramic view system25Airbag26Electronic Stability Control27Alarm28OnStar29Infotainment32Cigarette lighter / Power outlet front34Heated rear window / Heated
windscreen / Inductive charging35Light switch / Diagnostic
connector module36Lighting
Page 227 of 271
Vehicle care225
3. Remove the electrical connectioncable and air hose from the
stowage compartments on the
underside of the compressor.
4. Screw the compressor air hose to
the connection on the sealant
bottle.
5. Fit the sealant bottle into the bracket on the compressor.
Set the compressor near the tyre
in such a way that the sealant
bottle is upright.
6. Unscrew valve cap from defective
tyre.
7. Screw the filler hose to the tyre valve.
8. The switch on the compressor must be set to J.
9. Connect the compressor plug to
the power outlet or cigarette
lighter socket.
The tyre repair kit may only be
plugged in to the front 12 V power
outlet, in order to work properly.
To avoid discharging the battery,
we recommend running the
engine.
10. Set the rocker switch on the compressor to I. The tyre is filled
with sealant.
11. The compressor pressure gauge briefly indicates up to
600 kPa (6 bar) whilst the sealant
Page 235 of 271

Vehicle care2333. Connect the black lead to thenegative terminal of the booster
battery.
4. Connect the other end of the black
lead to a vehicle grounding point
of your vehicle in the engine
compartment.
Route the leads so that they cannot
catch on rotating parts in the engine
compartment.
To start the engine: 1. Start the engine of the vehicle providing the jump.
2. After 5 minutes, start the other engine. Start attempts should be
made for no longer than
15 seconds at an interval of 1 minute.
3. Allow both engines to idle for approx. 3 minutes with the leads
connected.
4. Switch on electrical consumers e.g. headlights, heated rear
window of the vehicle receiving
the jump start.
5. Reverse above sequence exactly when removing leads.Towing
Towing the vehicle
Remove the cap.
The towing eye is stowed with the
vehicle tools 3 219.
Screw in the towing eye as far as it will
go until it stops in a horizontal
position.
Attach a tow rope – or better still a tow
rod – to the towing eye.
The towing eye must only be used for towing and not for recovering the
vehicle.
Switch on ignition to release steering
wheel lock and to permit operation of
brake lights, horn and windscreen
wiper.
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236Vehicle careDo not clean the engine compartmentwith a steam-jet or high-pressure jet
cleaner.
Thoroughly rinse and leather-off the
vehicle. Rinse leather frequently. Use
separate leathers for painted and
glass surfaces: remnants of wax on
the windows will impair vision.
Have the door hinges of all doors
greased by a workshop.
Exterior lights
Headlight and other light covers are
made of plastic. Do not use any
abrasive or caustic agents, do not use
an ice scraper, and do not clean them dry.
Polishing and waxing Wax the vehicle regularly at the latest
when water no longer beads.
Otherwise, the paintwork will dry out.
Polishing is necessary only if the paint
has become dull or if solid deposits
have become attached to it.
Paintwork polish with silicone forms a
protective film, making waxing
unnecessary.Plastic body parts must not be treated with wax or polishing agents.
Windows and wiper blades Use a soft lint-free cloth or chamois
leather together with window cleaner
and insect remover.
When cleaning the rear window from
inside, always wipe in parallel to the
heating element to prevent damage.
For mechanical removal of ice, use a
sharp-edged ice scraper. Press the
scraper firmly against the glass so
that no dirt can get under it and
scratch the glass.
Clean smearing wiper blades with a
soft cloth and window cleaner.
Remove dirt residues from smearing
wiper blades by using a soft cloth and window cleaner. Also make sure to
remove any residues such as wax,
insect residues and similar from the
window.
Ice residues, pollution and continuous
wiping on dry windows will damage or
even destroy the wiper blades.Glass panel
Never clean with solvents or abrasive
agents, fuels, aggressive media e.g.
paint cleaner, acetone-containing
solutions, acidic or highly alkaline
media or abrasive pads.
Wheels and tyres
Do not use high-pressure jet
cleaners.
Clean rims with a pH-neutral wheel
cleaner.
Rims are painted and can be treated
with the same agents as the body.
Paintwork damageRectify minor paintwork damage witha touch-up pen before rust forms.
Have more extensive damage or rust
areas repaired by a workshop.
Underbody Some areas of the vehicle underbody
have a PVC undercoating while other
critical areas have a durable
protective wax coating.