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Vehicle care247
4. Remove the bulb holder byturning anticlockwise and replace
the bulb by withdrawing or
pushing the bulb slightly into the
socket and rotating anticlockwise:
Tail light ( 1)
Rear fog light/Reverse light ( 2),
depending on the side.
5. Fit the light assembly in the tailgate and tighten the screws
from the inside. Attach all covers.Rear fog light respectively reverse
light ( 2), depending on the side, can
be replaced by a cover in the tailgate
without removing the light assembly:
remove cover, turn bulb holder and
replace the bulb by rotating
anticlockwise.3-door hatchback
1. Release the cover on the respective side and remove it.
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248Vehicle care
2. Unscrew both plastic securingnuts from the inside by hand.
3. Carefully withdraw the lightassembly from the recesses and
remove.
4. Detach wiring plug from bulb carrier.
5. Remove the bulb holder by turning and replace the bulb by
withdrawing or pushing the bulb
slightly into the socket and rotating anticlockwise:
Tail light/Brake light ( 1)
Turn signal light ( 2)
version with Light Emitting Diode
(LED)
Only turn signal light ( 2) can be
changed.
6. Insert and turn bulb holder clockwise into the tail light
assembly. Connect the wiring
plug with the light assembly. Fit
light assembly with the retaining
pins into the recesses of the car
body and tighten the securing
nuts from the inside of the load
compartment. Close cover and
engage.
Light assembly in the tailgate
1. Open the tailgate and remove the
covers on the respective side.
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Vehicle care249
2. Unscrew three screws.
3. Remove the tail light assembly from tailgate.
4. Remove the bulb holder by turning and replace the bulb by
withdrawing or pushing the bulb
slightly into the socket and
rotating anticlockwise:
Tail light ( 1)
Rear fog light/Reverse light ( 2),
depending on the side.
( 2 ) (only one side)
version with Light Emitting Diode
(LED)
Only rear fog light respectively
reverse light ( 2), depending on the
side, can be changed.
5. Insert and turn bulb holder clockwise into the tail light
assembly. Fit the tail light
assembly in the tailgate and
tighten the screws. Attach all
covers.
Side turn signal lights 3-door hatchback
To replace bulb, remove lamp
housing:1. On left vehicle side, slide lamp to the front and remove it out of the
front wing with the rear end.
On right vehicle side, slide lamp to
the rear and remove it out of the front wing with the front end.
2. Turn bulb holder anticlockwise and remove from housing.
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Vehicle care251
4. Insert bulb holder and turnclockwise.
5. On left side: insert front end into front wing, slide forward and insert
rear end.
On right side: insert rear end into
front wing, slide rearward and
insert front 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 lamp housing by turning anticlockwise.
4. Pull bulb from bulb holder andreplace it.
5. Insert bulb holder into lamp housing 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 255 of 331
Vehicle care253Engine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover and fold it
upwards until it stops. Remove the
cover vertically upwards.
No.Circuit1Engine control module2Lambda sensor3Fuel injection, ignition system4Fuel injection, ignition system5–6Mirror heating, anti-theft alarm
system7Fan control, engine control
module, transmission control
module8Lambda sensor, engine cooling9Rear window sensor10Vehicle battery sensor11Trunk release12Adaptive forward lighting, auto‐
matic light control13ABS14Rear window wiper
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254Vehicle care
No.Circuit15Engine control module16Starter17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS31Adaptive cruise controlNo.Circuit32Airbag33Adaptive forward lighting, auto‐
matic light control34Exhaust gas recirculation35Exterior mirror, rain sensor36Climate control37Canister vent solenoid38Vacuum pump39Central control module40Windscreen washer, rear
window washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44Windscreen wiper45Radiator fan46–No.Circuit47Horn48Radiator fan49Fuel pump50Headlamp levelling, adaptive
forward lighting51Air shutter52Auxiliary 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, malfunction may occur.
Page 257 of 331
Vehicle care255Instrument 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.Circuit1Displays2Exterior lights, body control
module3Exterior lights, body control
module4Infotainment system5Infotainment system, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Left low beam, body control
module9Right low beam, body control
module, airbag module10Door locks, body control module11Interior fan12–13–
Page 265 of 331

Vehicle care263
If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w
illuminates continuously.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these wheels. Control indicator w
illuminates. For the further three
wheels the system remains
operational.
The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.
Each time the tyres are replaced, tyre pressure monitoring system sensors
must be dismounted and serviced.
For the screwed sensor: replace
valve core and sealing ring. For
clipped sensor: replace complete
valve stem.Vehicle loading status
Adjust tyre pressure to load condition according to tyre information label ortyre pressure chart 3 309, and select
the relevant setting in the menu Tire
Load in the Driver Information Centre,
Vehicle Information Menu 3 121.
Select:
■ Light for comfort pressure up to
3 people
■ Eco for Eco pressure up to
3 people
■ Max for full loading
Auto learn function
After changing wheels, the vehicle
must be stationary for approx.
20 minutes, before the system
recalculates. The following relearn process takes up to 10 minutes of
driving with a minimum speed of
20 km/h. In this case, $ can be
displayed or pressure values can
swap in the Driver Information Centre.
If problems occur during the relearn
process, a warning message is
displayed in the Driver Information
Centre.
Temperature dependency Tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase.
The tyre pressure value displayed in
the Driver Information Centre shows
the actual tyre pressure. Therefore it
is important to check tyre pressure
with cold tyres.