Page 199 of 272
199 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 59, ”Warning, charging”.
WARNING
Keep hands and clothing clear of drive
belts when engine is running.
Always stop the engine before
inspecting drive belt.
The radiator fan is electric and can
start even when the engine is
switched off.NOTICESerious damage can be done to the car’s
electrical system if an alternator lead is
disconnected while the engine is running.95_US_MY09.book Page 199 Tuesday, April 15, 2008 11:03 AM
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Page 216 of 272

216 Car care and technical informationFuse panel in instrument panel
# Amp Function
A 30 Trailer lights
B 10 Automatic transmission
C 7.5 Electric door mirrors; DICE: manual beam length
adjustment3
1 15 Brake lights; Park Brake Shift Lock (cars with auto-
matic transmission)
2 15 Reversing lights
3 10 Parking lights and taillights, left
4 10 Parking lights and taillights, right
5 7.5 DICE / TWICE
6 30 Electric windows, right; trailer charging
6B 7.5 Brake lights, trailer
7 10 Engine injectors
8 15 Trunk lighting; trunk lock; door lighting; parking
assistant3; SID
9 15 Audio System; CD changer3
10 15 Heating, rear seat3; moonroof3, remote control
receiver
11 30 Electrically adjusted passenger seat3
12 7.5 Automatic transmission3
13 20 Audio System, amplifier
14 30 Ignition system, engine
15 20 Fuel pump
16 20 DICE (direction indicators)
16B – OnStar3
17 20 Engine-management system; main instrument;
DICE/TWICE
18 40 Door-mirror heating; rear-window heating
19 10 OnStar3; Telematics3
20 15 ACC; interior lighting; rear fog light; high beam flasher
21 10 Audio System; rear-view mirror; load angle sensor3;
navigation3; Cruise Control3
22 40 Interior fan
23 15 Central locking; navigation3; door mirror memory3
24 20 Main light switch
25 30 Electrically adjustable driver’s seat
IB2439
BC123456 A
14
121110987
13
6B
1516
2324
222120191817
16B25262728293031
3635343332
393837
95_US_MY09.book Page 216 Tuesday, April 15, 2008 11:03 AM
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Page 244 of 272

244 Car care and technical informationTwo-coat enamelAs the name implies, two-coat enamel is
applied in two operations. The first coat, the
base color, contains the pigment, metal
flakes and binder. The second coat consists
of a clear enamel, which provides the final
gloss for the paintwork and protects the
base from moisture and environmental con-
taminants.
Touch-up stone-chip damage as follows:
1 Thoroughly clean the damaged area.
2 Apply the primer, base color and finally,
the enamel. To achieve the best finish,
apply two or three coats of primer.
Air conditioning
(ACC)
WARNING
All repairs and adjustments on the A/C
system must be carried out by a work-
shop authorized for this kind of work.
The A/C system is pressurized. Do not
break any connections or undo A/C
system components.
Escaping refrigerant gas can cause
visual impairment or other injury.NOTICE The A/C system is designed for use
with R134a refrigerant.
Refrigerant handling requires special
equipment and special procedures for
charging and draining the system.
Never mix R134a and R12 refriger-
ants.
IB1334
Surface-treatment composition 1 Body panel
2 Zinc (certain panel sections only) 7.5 µm
3 Phosphate coating
4 Cathodic ED 23 µm
5 Intermediate coat 35 µm
6 Metallic base 15 µm
7 Clear enamel /solid enamel 40 µm
95_US_MY09.book Page 244 Tuesday, April 15, 2008 11:03 AM
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Page 267 of 272

267 Index
Index
AA/C system, fault diagnosis
________ 245
A/C system, maintenance _________ 244
ABS brakes
____________________ 160
ACC
__________________________ 79
ACC functions
___________________ 82
ACC, automatic climate control
______ 79
ACC, calibration
_________________ 86
ACC, condensation water
__________ 86
ACC, useful tips
_________________ 86
AUX input
_____________________ 104
Adjustable systems
______________ 265
Adjusting the steering wheel
_______ 114
Adjustment, seats
________________ 18
Air conditioning (A/C), fault diagnosis
and maintenance ______________ 244
Airbag
_________________________ 29
Alarm __________________________ 50
Alarm functions
__________________ 53
Alarm signals
________________ 50
, 53
Album information
_______________ 104
Alternator
_____________________ 199
Alternator drive belt
__________ 199
, 260
Alternator rating
________________ 260
Antennas
______________________ 109
Anticorrosion treatment
___________ 246
Antidazzle rear-view mirror
________ 121
Anti-skid
______________________ 163Autochecking of lights on starting
____ 64
Auto-dimming rear-view mirror with
garage door opener
____________ 118
Automatic climate control (ACC)
_____ 79
Aviod theft, tip
__________________ 166
BBattery
________________________ 197
Battery charging/replacing
________ 197
Battery, boost starting
____________ 184
Before a long journey ____________ 247
Before towing a camper or trailer
___ 177
Belt guide
______________________ 12
Boost starting using jump leads
____ 184
Brake and clutch fluid
____________ 194
Brake-fluid reservoir
_____________ 194
Brakes, technical data ____________ 261
Bulbs, changing
_________________ 202
Bulbs, table of
__________________ 213
Buying new tires ________________ 223
CCD changer
____________________ 100
CHECK messages
_______________ 71
CHECKING
_____________________ 71
Car alarm
______________________ 50
Car care
______________________ 187
Cargo net, 9-5 SportCombi
________ 137
Carpeting, care of
_______________ 241Catalytic converter, important
considerations
_________________ 145
Central locking ___________________ 44
Change language in SID
___________ 72
Change of address notification
_____ 254
Changing a wheel
_______________ 237
Changing bulbs
_________________ 202
Changing wiper blades
___________ 200
Charge mobile phone
____________ 126
Charger/Jump starting ____________ 186
Charging the battery/Jump starting
__ 186
Chassis number
________________ 264
Checks before towing a camper or
trailer
________________________ 177
Child safety
_____________________ 22
Child safety locks, rear doors
_______ 47
Cleaning, engine bay
_____________ 243
Clock
_________________________ 105
Color code, body
________________ 264
Color code, trim _________________ 264
Compact spare wheel
____________ 235
Compass
______________________ 122
Condensation water, ACC
__________ 86
Connecting a portable player ______ 105
Coolant
_______________________ 193
Courtesy Headlight Feature
________ 74
Crash memory, see EDR
_________ 255
Cross modulation
_______________ 110
Cruise control
__________________ 159
Cup holder
_____________________ 128
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