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183
Self-help, vehicle care
No. Circuit4 Infotainment system, diesel engine
5 –
6 –
7 Starter, diesel engine: engine
controller
8 Horn
9 Fuel injection system, fuel pump,
stationary heater
10 Turn signal lamps
11 Infotainment system, Information
display, Infotainment system
12 Heated rear window, exterior
mirrors
13 Central locking, anti-theft alarm
system
14 Engine control
Petrol engine:
Diesel engine:
15 Engine control unit,
Z 17 DTH engine
16 Accessory socket, cigarette lighter No. Circuit
17 –
18 Adaptive Forward Lighting
19 Central locking system
20 Interior lighting, reading lamp
21 Windscreen washer system
22 Rear electric window
23 Tilt/slide sun roof, skylight roof
24 Anti-theft alarm system
25 Rear window wiper
26 Ignition system, engine electronics
27 Engine control, airbag, ESP®
Plus
28 Air conditioning system
29 Front left electric window
30 –
31 Engine control,
Z 17 DTH engine
32 Front right electric window No. Circuit
33 Central control module,
immobiliser, control indicators
34 Windscreen wipers
35 Interior lighting, interior mirror,
information display
36 Brake light, ABS, ESP®
Plus
37Cigarette lighter, auxiliary heater
38 Seat heater (left)
39 Seat heater (right)
40 Adaptive Forward Lighting,
automatic headlamp range
adjustment
41 Reversing lamps
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184 Self-help, vehicle care
Picture no: 14436s.tif Picture no:
No. Circuit
42 Engine cooling, lighting
43 Left parking lamp
44 Right parking lamp
45 Fog tail lamp
46 Fog lamps
47 Towing equipment, accessory
socket
48 Diesel filter heater
49 –
50 Diesel filter heater
No. Circuit
51 Left dipped beam:
Xenon headlamp
Halogen headlamp
52 Right dipped beam:
Xenon headlamp
Halogen headlamp
53 Sun roof, electric windows, radio
54 Main beam (left)
55 Main beam (right)
56 –
Picture no: 14213s.tif
Fuse box in engine compartment
The fuse box is at the front left of the
engine compartment.
Disengage cover of fuse box from lug and
lift off.
Some circuits may be protected by several
fuses.
9 Warning
Turn off engine before opening fuse
box, risk of injury.
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185
Self-help, vehicle care
Picture no: 14214s.tif
The following fuses are Maxi fuses.
Bulb replacement Switch off the ignition and switch off the
relevant switch or close the doors.
Only hold a new bulb at the base! Do not
touch the bulb glass with your bare hands.
Replace the bulb, checking that the data
on the base matches that of the defective
bulb.
To replace a bulb, pull off the relay box on
the left side. On the right side, pull off the
air hose to the air filter.
Picture no: 16085s.tif
Halogen headlamp systemHeadlamp system has separate bulbs for
dipped beam 1 (bottom bulbs) and main
beam 2 (top bulbs).
No. Circuit
1 Interior fan
2 Power steering
3 ABS
4 Easytronic diesel preheating
system
5 Heated rear window
6 Engine cooling
7 Starter
8 Engine cooling
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186 Self-help, vehicle care
Picture no: 16086s.tif
Dipped beam
1. Open bonnet and engage support.
2. Rotate the cap anticlockwise and remove.
Picture no: 16087s.tif
3. Press the bulb do wn in the holder.
4. Remove bulb with connector from reflector housing.
Picture no: 16088s.tif
5. Detach plug connector from bulb base.
6. Attach connector to new bulb.
7. Insert the bulb with connector so that the lug engages in the recess in the
reflector.
8. Place headlamp protective cover in position and close.
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187
Self-help, vehicle care
Picture no: 16089s.tif
Main beam
1. Open bonnet and engage support.
2. Rotate the cap anticlockwise and remove.
Picture no: 16090s.tif
3. Detach plug connector from bulb.
4. Disengage spring wire clip from
retaining lugs by moving it forwards
and swivel it aside.
Picture no: 16091s.tif
5. Remove bulb from reflector housing.
6. When fitting the new bulb, insert lugs in the reflector recesses.
7. Engage spring wire clip, plug connector
onto bulb.
8. Place headlamp protective cover in position and close.
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188 Self-help, vehicle careHalogen headlamp system
3,
Adaptive Forward Lighting (AFL)
Halogen headlamp system for dipped and
main beam in comb ination with curve
lighting and cornering light.
Picture no: 14222s.tif
Xenon headlamp systemHeadlamp system has separate bulbs for
dipped beam 1 (bottom bulbs) and main
beam 2 (top bulbs).
Dipped beam
Picture no: 14219s.tif
Main beam
1. Open bonnet and engage support.
2. Remove headlamp protective cover.
9 Warning
The xenon headlamps work with very
high electrical voltage. Do not touch.
Have bulbs changed by a workshop.
9 Warning
The xenon headlamps work with very
high electrical volt age. Do not touch.
Have bulbs changed by a workshop.
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189
Self-help, vehicle care
Picture no: 14220s.tif
3. Detach plug connector from bulb.
4. Disengage spring wire clip from retaining lug and swivel upward.
Picture no: 14221s.tif
5. Remove bulb from reflector housing.
6. When fitting the new bulb, insert lugs in
the reflector recesses.
7. Engage spring wire clip, plug connector onto bulb.
8. Place headlamp protective cover in position and close.
Picture no: 16089s.tif
Parking lamps 1. Open bonnet and engage support.
2. Rotate the main beam headlamp cap anticlockwise and remove.
On vehicles with Xenon headlamps 3 ,
remove headlamp cover cap 3188,
Fig. 14219 S.
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190 Self-help, vehicle care
Picture no: 16092s.tif
3. Push side lugs of parking lamp holder together and remove holder from
reflector.
Picture no: 16093s.tif
4. Remove bulb from holder.
5. Insert new bulb.
6. Insert bulb socket in reflector.
7. Place headlamp protective cover in position and close.
Picture no: 16094s.tif
Front indicator lamps 1. Open bonnet and engage support.
2 . R o ta te l ef t t u r n s i g n a l l a m p bu l b c a r r i e r and disengage.