201 Car care and technical information
Drive belts The alternator is situated on the right-hand
side of the engine, adjacent to the bulkhead.
It is driven via a Poly-V-belt from the crank-
shaft pulley.
The Poly-V-belt also drives the water pump,
the A/C compressor and the steering servo
pump.
The belt tension is critical and is adjusted
automatically by the belt tensioner.
See also page 51, ”Warning, charging”.
WARNING
Keep hands and clothing well clear of
drive belts when engine is running.
Always stop engine before inspecting
drive belts.
The fan can start even when the
engine is switched off.NOTESerious damage can be done to the car’s
electrical system if an alternator lead is
disconnected while the engine is running.
IB542
Routing of the Poly-V-belt:
4-cylinder engine
IB543
Routing of the Poly-V-belt:
3.0t V6
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219 Car care and technical information
Relay panel under instrument panel Relay panel under instrument panel (cont.)28 7,5 Airbag (SRS)
29 7,5 ABS/TCS/ESP
30 7,5 Starter motor
31 7,5 Cruise control; water valve; fog lights, front
32 15 Ventilated front seats
33 7,5 Direction-indicator switch
34 30 Cigarette lighter (front/rear)
35 15 Daytime running light
36 30 Electric windows, left
37 30 Windshield wipers
38 30 Electric heating, front seats
39 20 Limp-home solenoid (automatic transmission);
OnStar; telematics
52-
56Spare fuses
# Function
A –
B Electric heating of rear seat
C1 –
C2 –
D –
E Main relay (engine management system)
F Fuel filler flap
G Fuel pump
H Ignition switch
I Rear-window / door mirrors heating
J–
KStarter relay
L1 Limp-home function
L2 Bootlid
IB1796
A
BC1
C2
L2 L1 D
GE
F
H
I
K J
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