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148Vehicle care
3. tail light / brake light 1
turn signal light 2
tail light 3
reversing light (passenger side) /
rear fog light (driver's side) 4.4. Rotate bulb holder anticlockwise.
5. Remove bulb holder. Push bulb
into socket slightly, rotate anti-
clockwise, remove and renew
bulb.
6. Insert bulb holder into the tail light
assembly and screw into place.
Connect wiring plug. Install tail
light assembly in body and tighten screws. Close covers and
engage.
7. Switch on ignition, operate and check all lights.
Side turn signal lights
To replace bulb, remove lamp
housing:
1. Slide lamp to the front and remove
it out of the front wing with the rear
end.
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Vehicle care149
2. Turn bulb holder anticlockwiseand remove from housing.
3. Pull bulb from bulb holder andreplace it.
4. Insert bulb holder and turnclockwise.
5. Insert front end into front wing, slide forward and insert rear end.
Centre high-mounted brake light
Have LEDs replaced by a workshop.
Number plate light
1. Unscrew both screws.
2. Remove bulb housing downwards, taking care not to pull
on the cable.
Rotate bulb holder anticlockwise
to disengage.
3. Remove bulb from bulb holder and replace it.
4. Insert bulb holder into bulb housing and turn clockwise.
5. Insert bulb housing and secure using a screwdriver.
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150Vehicle careInterior lightsCourtesy light, reading lights 1. To remove, prise the opposite side of the lamp switch using a
flat-blade screwdriver. (Be careful
not to make scratches.)
2. Remove the bulb.
3. Replace the bulb.
4. Reinstall the lamp assembly.
Load compartment light
1. Prise the lamp out with a screwdriver.
2. Remove bulb.
3. Insert new bulb.
4. Install lamp.
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 two fuse boxes in the
vehicle:
● In the front left of the engine compartment.
● On the driver's side behind a cover in the instrument panel.
Before replacing a fuse, turn off the
respective switch and the ignition.
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Vehicle care153No.Circuit18Engine control module219Injection system/Ignition20Air conditioning system21Battery sensor22Electric steering column lock23Cooling fan low24–25Exterior mirror switch26Engine control module/Manual
transmission automated
module27Fuel system28Brake system29Seat occupancy recognition30Headlight range adjustment31Horn32Front fog light33High beam leftNo.Circuit34High beam right35–36Rear wiper37Cornering light left38Washer system39Cornering light right40–41–42Starter 243Instrument panel44Manual transmission auto‐
mated, DC-DC converter45Starter 146ABS47Cooling fan high48Front wiper49Body control module/Retained
power offAfter 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.
Instrument panel fuse box
The fuse box is located on the driver's
side behind a cover in the instrument
panel.
To open the compartment, compress
the locking tabs, fold cover down and
remove.
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154Vehicle careNo.Circuit1Onstar2Air conditioning system3Instrument cluster4Transmission control module5Infotainment6–7Rear parking assist8Data link connection9Electric steering column lock10Sensing and Diagnostic module11DC transformer12–13–14Linear power module15Central locking system/Ignition
system16Ignition systemNo.Circuit17–18Instrument cluster19–20Headlight range adjustment21Power windows, front22Power windows, rear23–24Manual transmission auto‐
mated module25Auxiliary power outlet26Sunroof27–28Body control module 829Body control module 730Body control module 631Body control module 532Body control module 4
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160Vehicle careTyre pressure sensor matching
process
Each tyre pressure sensor has a
unique identification code. The
identification code must be matched
to a new tyre/wheel position after
rotating the tyres or exchanging the
complete wheel set and if one or more
tyre pressure sensors were replaced. The tyre pressure sensor matching
process should also be performed
after replacing a spare tyre with a
road tyre containing the tyre pressure sensor.
The malfunction light w and the
warning message or code should go
off at the next ignition cycle. The
sensors are matched to the wheel
positions, using a relearn tool, in the
following order: left side front wheel,
right side front wheel, right side rear
wheel and left side rear wheel. The
turn signal light at the current active
position is illuminated until sensor is
matched.
Consult a workshop for service. There
are two minutes to match the first
wheel position, and five minutes
overall to match all four wheelpositions. If it takes longer, the
matching process stops and must be
restarted.
The tyre pressure sensor matching
process is:
1. Apply the parking brake.
2. Turn the ignition on.
3. On vehicles with manual transmission: select neutral.
4. Use MENU on the turn signal
lever to select the Vehicle
Information Menu in the Driver
Information Centre.
5. Turn the adjuster wheel to scroll to
the tyre pressure menu.
6. Press SET/CLR to begin the
sensor matching process. A
message requesting acceptance
of the process should be
displayed.
7. Press SET/CLR again to confirm
the selection. The horn sounds
twice to indicate that the receiver
is in relearn mode.
8. Start with the left side front wheel.9. Place the relearn tool against the
tyre sidewall, near the valve stem.Then press the button to activate
the tyre pressure sensor. A horn
chirp confirms that the sensor
identification code has been
matched to this wheel position.
10. Proceed to the right side front wheel, and repeat the procedure
in Step 9.
11. Proceed to the right side rear wheel, and repeat the procedure
in Step 9.
12. Proceed to the left side rear wheel, and repeat the procedure
in Step 9. The horn sounds twice
to indicate that the sensor
identification code has been
matched to the left side rear
wheel, and the tyre pressure
sensor matching process is no
longer active.
13. Turn off the ignition.
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Vehicle care1631. Open the floor cover.
2. Remove the compressor and thesealant bottle.
3. Remove the electrical connectioncable and air hose from the
storage 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 retainer 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.
To avoid discharging the battery, we recommend running the
engine.
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Vehicle care1714. 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 The towing eye is stowed with the
vehicle tools 3 155.
1. Disengage cap by using the
screwdriver and remove the cap.
2. Screw in the towing eye as far as it will go until it stops in a
horizontal position.
3. Attach a tow rope – or better still a
tow rod – to the towing eye.
General
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.
Switch the selector lever to neutral.
Release the parking brake.