2003 MERCEDES-BENZ C320 4MATIC Battery

310 Practical hintsTowing the vehicleWarning!
G
With the engine not running, there is no
power assistance for the braking and steer-
ing systems. In this case, it is important to
keep in mind that a considerably higher
degree of effort is necessary to brake and
steer the vehicle. Adapt your driving accord-
ingly.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking
activated and the key in starter switch
position2, the vehicle doors lock if the
left front wheel as well as the right rear
wheel are turning at vehicle speeds of
approx. 9 mph (15 km/h) or more.
Switch off the tow-away alarm
(page 80).
To prevent the vehicle doors from
locking, deactivate the automatic
central locking (
page 129).
Towing of the vehicle should only be
done using the properly installed
towing eye bolt. Never attach tow
cable, tow rope or tow rod to vehicle
chassis, frame or suspension parts.
iIf the battery is disconnected or
discharged

the key will not turn in the starter
switch. See notes on the battery
(page 240) or on jump starting
(page 306).


the selector lever will remain
locked in positionP. See notes on
manual unlocking of gear selector
lever (
page 288).

326 Technical dataElectrical system
Electrical system
C230KompressorSport
C 240 / C 320 (all models)
C32AMG
Generator (alternator)
14 V/120 A
14 V/120 A
14 V/120 A
Starter motor
12 V/1.1 kW
12 V/1.7 kW
12 V/1.7 kW
Battery
12 V/100 Ah
12 V/100 Ah
12 V/100 Ah
Spark plugs
Bosch F 6 MPP 332
Bosch F 8 DPP332
NGK PFR 5 R-11
NGK IFR 6 D 10
Electrode gap
0.031 in (0.8 mm)
0.039 in (1.0 mm)
0.039 in (1.0 mm)
Tightening torque
18–22ft.lb (25–30Nm)
15 – 22 ft.lb (20 – 30 Nm)
15 – 22 ft.lb (20 – 30 Nm)

345 Technical terms
Tele Aid System
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
viding that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).

349 Index
Automatic transmission 138
Accelerator position 143
Emergency operation
(Limp Home Mode) 143
Fluid level 238
Gear ranges 140
Gear selector lever position 141
Gear shifting malfunctions 143
Kickdown 143
Manual shifting 139
One-touch gearshifting 139
Program mode selector switch 142
Selector lever position 138
Starting with 44
Transmission fluid 238
Winter program mode 142
Auxiliary fuse box 313
B
BabySmart
TM
Airbag deactivation system 67, 341
Compatible child seats 67, 341
Self-test 67
Backrest
Folding forward 200
Folding rearward 200
Backrest tilt 33Backup lamps 291, 295
Bulbs 291
BAS 74, 341
Messages in display 263
Batteries, SmartKey
Changing 286, 287
Check lamp 85
Checking 86
Battery discharged
Jump starting 306
Battery, vehicle 240, 303
Charging 304
Disconnecting 304
Messages in display 278
Reconnecting 305
Reinstalling 304
Removing 304
Bi-Xenon headlamps* 341
Bi-Xenon type*
Front lamp bulbs 293
Block heater 246
Blocking
Rear door window operation 71
Bolts
For Minispare wheel 284
For spare wheel 282Brake assist system (BAS) 341
Brake fluid 332
Checking 234
Brake lamp bulbs 291
Brake lamp, high mounted 291
Brake pads
Message in display 265
Brakes 224
Warning lamp 258
Break-in period 222
Bulbs, replacing 290
Additional turn signals 290
Backup lamps 291
Brake lamps 291
Fog lamps 290
Front lamps 290
High beam 290
High mounted brake lamp 291
License plate lamps 291, 295
Low beam 290
Parking lamps 290, 291, 293, 294
Rear fog lamp 291, 295
Side marker lamps 290, 294
Standing lamps 290, 291, 293, 294
Tail lamp assemblies 291, 295
Turn signal lamps 290, 291

350 IndexButton
Audio system 168
C
CAC (Customer Assistance Center) 341
California
Important notice 11
Calling up
Range (distance to empty) 133
Service indicator 248
CAN system 341
Capacities
Fuels, coolants, lubricants, etc. 329
Cargo area see Trunk 86
Casette mode
Playing cassettes 174
Cassette player
Operating 118
Catalytic converter 231
CD changer* 178
CD mode 178
CD player*
Operating 117
Center console 25
AIRBAG OFF indicator lamp 260
Lower part 26
Upper part 25Centigrade
Setting temperature units 123
Central locking
Automatic 91
From inside 92
Switch 92
Switching on/off
(control system) 129
Unlocking from inside 92
Central locking switch 92
Certification label 318
Changing
Batteries (SmartKey) 287
Key setting 129
Changing CDs 178
Charcoal filter 161
Charging
Vehicle battery 304
CHECK ENGINE malfunction
indicator lamp 259
Checking
Brake fluid 234
Coolant level 234, 238
Oil level 234, 236
Tire inflate pressure 234
Vehicle lighting 234Child safety 65
Airbags 58
Infant and child restraint
systems 62, 65
LATCH child seat anchors 69
Child safety switch see Blocking of
rear door window operation 71
Child seat anchors
see LATCH child seat anchors 70
Cigarette lighter 208
Cleaning
Cup holder 252
Gear selector lever 252
Hard plastic trim items 252
Headlamps 146
Headliner 252
Instrument cluster 252
Leather upholstery 253
Light alloy wheels 252
MB Tex upholstery 253
Plastic and rubber parts 252
Seat belts 252
Steering wheel 252
Windows 251
Windshield 49
Wiper blades 251

352 IndexCruising range, fuel 335
Cup holder
Cleaning 252
In front seat armrest 204
In rear seat armrest 205
Opening 204
Customer Assistance Center (CAC) 341
D
Daytime running lamp mode 103
Setting 125
Deactivating
Air conditioner 154
Air recirculation mode 152, 161, 162
Alarm 80
Anti-theft alarm system 80
Automatic climate control* 157
Central locking (control system) 129
Climate control 149
Climate control system 153
Cruise control 194
Defrosting 152, 160
Engine with the key 53
ESP 76
Exterior lamps 102
Exterior lamps delayed shut-off 126
Front fog lamps 126Hazard warning flasher 104
Headlamps 52
Interior lighting delayed shut-off 127
Rear window defroster 153, 162
Seat heater* 97
Tow-away alarm 80
Deep water see Standing water 229
Defogging
Windshield 151, 159
Defrosting 151, 160
Delayed shut-off
Exterior lamps 126
Interior lighting 127
Dialing
A number (telephone) 135
Difficulties
While driving
see Problems while driving 49
With starting 45
Digital speedometer 116
Direction of rotation (tires) 243
Discharged battery
Jump starting 306
Disconnecting
Vehicle battery 304Display elements
Audio system 166
Displays
Digital speedometer 116
Messages 238, 261
Selecting 124
Service indicator 247
Showing malfunctions 119
Distance to empty (range)
Calling up 132
Door control panel 28
Door entry lamps 106
Door handle 28
Door unlock
With Tele Aid* 216
Doors
Message in display 272
Opening from inside vehicle 87
Opening from outside 85
Downhill driving
Cruise control 194
Downshifting 137, 139
Drink holder see Cup holder 204
Drinking and driving 223

357 Index
Parcel net in front passenger
footwell 206
Storage compartment in front of
armrest 205
J
Jack 279
Jump starting 306
K
Key dependency memory
Settings 131
Key positions in starter switch 31
Key, mechanical 285
Key, SmartKey
Battery check lamp 85
Changing the batteries 287
Checking the batteries 86
Factory setting 85
Global locking 85
Global unlocking 85
Loss of 87
Positions in starter switch 31
Remote control 84
Restoring to factory setting 85
Selective setting 85
Starting the engine 44Turning off the engine 53
Unlocking the trunk lid 86
Unlocking with 30
Keys 84
Kickdown 143, 343
Kilometers/miles in speedometer 123
Km/h or mph in speedometer 123
L
Labels, identification 318
Lamp bulbs, exterior 290
Lamps, exterior
Front 290
Light sensor 272
Messages in display 272–275
Rear 291
Lamps, indicator and warning
ABS 257
Airbag Off 61
Battery (SmartKey) 85
Brakes 258
CHECK ENGINE 259
Coolant 266
Engine diagnostics 257, 259
ESP 256
Fuel reserve 259
Instrument cluster 256–259Seat belts 259
Service indicator 247
SRS 57
Turn signals 23
Language
Multifunction display 124
Setting 124
LATCH child seat anchors 69
Folding back 70
Layout of poly-V-belt drive 319
Leather upholstery
Cleaning 253
License plate lamps
Messages in display 274
Replacing bulbs 291, 295
Light alloy wheels
Cleaning 252
Technical data 323
Light sensor 272
Lighter see Cigarette lighter 208
Lighting 101
Automatic headlamp mode 102
Combination switch 104
Daytime running lamp mode 103
Door entry lamps 106

359 Index
Mechanical key 285
Memory function* 98, 343
Recalling positions from memory 99
Storing exterior rear view mirror
parking positions 100
Storing key dependent settings 99
Menus 112
AUDIO 116
Control system 343
In control system 114, 115
Malfunction memory 118
NAVI* 118
Settings menu 119
Standard display 116
Submenus 113
TEL* 134
Trip computer 132
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 123
Minispare wheel 300
Bolts 284
Removing 283Mirrors
Activating exterior rear view mirror
parking position* 145
Adjusting 39
Automatic antiglare* for inside
mirror 144
Automatic antiglare* for rear view
mirror 144
Exterior rear view mirror 39
Exterior rear view mirror parking
positions 131
Inside rear view mirror 39
Storing exterior rear view mirror
parking position* 100
MON (Motor Octane Number) 234, 343
Mph or km/h in speedometer 123
Multicontour seat* 96
Multifunction display 111, 343
Selecting language 124
Standard display 115
Multifunction display messages
ABS 262
BAS 263
Battery 278
Brake fluid 265
Brake pads 265Check engine 259
Coolant 267
Coolant level 266
Display 278
Doors 272
Engine 259
Engine oil level 270
ESP 269
Fuel reserve tank 272
Hood 272
Key 272
Lamps 272–275
Parking brake 264
Steering column not properly
locked 276
Steering gear oil level 276
Tele Aid* 277
Telephone* 277
Trunk lid 272
Washer fluid 278
Multifunction steering
wheel 24, 112, 343
Buttons 112