2004 MERCEDES-BENZ C320 4MATIC WAGON check engine light

31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing SmartKey
The steering is locked when the
SmartKey is removed from the starter
switch. If necessary, move steering
wheel slightly to allow the locking
mechanism to engage.
1Power supply to some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch and lock
the vehicle. Do not leave children unattend-
ed in the vehicle, or with access to an un-
locked vehicle. Unsupervised use of vehicle
equipment may cause an accident and/or
serious personal injury.iThe SmartKey can only be removed
from the starter switch with the gear
selector lever in positionP.
!If the SmartKey cannot be turned in the
starter switch, the battery may not be
sufficiently charged.

Check the battery and charge it if
necessary (
page 324)


Get a jump start (
page 327).
To prevent accelerated battery
discharge and a possible dead battery,
always remove the SmartKey from the
starter switch when the engine is not in
operation.

115 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard display
AUDIO
NAVI*
Malfunction
memory
Settings
Trip computer
Telephone*
Commands/submenusCoolant
temperature display
Select radio station
Activate route
guidance
Call up malfunc-
tion messages
Reset to factory
settings
Fuel consumption
statistics after
start
Load phone
book
Digital speedometer
Operate CD
player*
Instrument clus-
ter submenu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Call up FSS
Operate cassette
player
Lighting
submenu
Call up range
Check engine oil
level
Vehicle
submenuConvenience
submenu

251 Operation
At the gas station
Check regularly and before a long trip
1Coolant level
For more information on coolant, see
“Coolant level” (
page 257).
2Brake fluid (fuse box cover removed)
Removing fuse box cover
(
page 333).
3Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield
washer system and headlamp cleaning
system*” (
page 259).Engine oil level
For more information on engine oil level,
see “Engine oil” (
page 254).
Opening hood (
page 252).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (page 310).
Exterior lamp switch (page 100).
Tire inflation pressure
More information on tire inflation pressure
(
page 261).
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks immediately.
Notify an authorized Mercedes-Benz
Center immediately. Do not add brake
fluid as this will not solve the problem.
For more information, see “Practical
hints” (
page 275).

328 Practical hintsJump startingThe battery is located in the engine
compartment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to positionP.1Positive terminal of charged battery
2Positive under hood terminal in front of
discharged battery
3Negative terminal of charged battery
4Negative under hood terminal in front
of discharged battery

Connect positive terminal1 of the
charged battery with positive under
hood terminal2 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal3 of the
charged battery with negative under
hood terminal4 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery3 first.

Start the engine of the disabled
vehicle.
You can now again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals3 and4 and then
from positive terminals1 and2.
You can now turn on the lights.

Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 258).
!Do not tow-start the vehicle.

367 Index
Storage compartment inside 209
Tailgate 87
Tie-down rings 214
Cargo tie-down rings 214
Cassette operation
Playing cassettes 182
Cassette player
Operating 119
Catalytic converter 246
CD changer* 185
CD operation 185
CD player
Operating 118
Center console 25
Lower part 26
PASS. AIRBAG OFF
indicator lamp 279
Upper part 25
Centigrade
Setting temperature units 125Central locking
Automatic 88
From inside 89
Switch 89
Switching on/off
(control system) 131
Unlocking from inside 89
Central locking switch 89
Certification label 338
Changing
Key setting 132
Changing CDs 185
Charcoal filter 165
Charging
Vehicle battery 325
CHECK ENGINE
malfunction indicator lamp 23, 276
Checking
Coolant level 257
Oil level 251, 254
Tire inflate pressure 251
Vehicle lighting 251Child safety 65
Airbags 58
Infant and child
restraint systems 62, 65
LATCH-type child seat anchors 71
Child safety switch see
Blocking of rear door window operation
Cigarette lighter 220
Cleaning
Cloth upholstery 272
Cup holder 271
Gear selector lever 271
Hard plastic trim items 271
Headlamps 145
Headliner and shelf
below rear window 271
Instrument cluster 270
Leather upholstery 271
Light alloy wheels 270
MB Tex upholstery 272
Plastic and rubber parts 272
Seat belts 271
Steering wheel 271

376 IndexL
Labels, identification 338
Lamp bulbs, exterior 310
Lamps, exterior
Front 310
Light sensor 294
Messages in display 293–296
Rear 311
Lamps, indicator and warning
ABS 274
Airbag Off 61
Battery (SmartKey) 85
Brakes 275
CHECK ENGINE 276
Coolant 287
Engine diagnostics 276, 278
ESP 277
Fuel reserve 278
Instrument cluster 274–278
Seat belts 278
Service indicator 265
SRS 57
Turn signals 23Language
Multifunction display 126
Setting 126
LATCH-type child seat anchors 71
Folding back 71
Layout of poly-V-belt drive 339
Leather upholstery
Cleaning 271
License plate lamps
Messages in display 294
Replacing bulbs 311, 316
Light alloy wheels
Cleaning 270
Technical data 342
Light sensor 294
Lighter see Cigarette lighter
Lighting 100
Automatic headlamp mode 101
Cargo compartment 106
Combination switch 104
Daytime running lamp mode 102
Door entry lamps 106
Exterior lamp switch 100Front fog lamps 102
High beam flasher 104
High beams 104
Instrument cluster illumination 107
Interior 105
Locator lighting 102
Low beam 100
Manual headlamp mode 101
Night security illumination 102
Parking lamps 100
Rear fog lamp 103
Settings (control system) 127
Limiting the gear range 141
Limp Home Mode 144
Loading 205
Cargo tie-down rings 214
Instructions 213
Roof rack 205
Ski sack* 205
Split rear bench seat 211
Locator lighting 102
Setting 128

390 IndexVehicle battery 324
Vehicle care 267
Cloth upholstery 272
Cup holder 271
Engine cleaning 269
Gear selector lever 271
Hard plastic trim items 271
Headlamps 269
Instrument cluster 270
Leather upholstery 271
Light alloy wheels 270
MB Tex upholstery 272
Ornamental moldings 269
Paintwork 268
Plastic and rubber parts 272
Power washer 268
Seat belts 271
Side markers 269
Steering wheel 271Tail lamps 269
Tar stains 268
Turn signals 269
Upholstery 271
Vehicle washing 269
Window cleaning 270
Wiper blades 270
Wood trims 272
Vehicle identification number (VIN) 338
Vehicle jack 301
Vehicle lighting
Checking 251
Vehicle tool kit 300
Alignment bolt 301
Spare fuses 301
Special fuse puller 301
Towing eye bolt 301
Vehicle jack 301
Wheel bolts 301
Wheel wrench 301Vehicle washing 269
Ventilated storage compartment 156
Ventilation
Storage compartment 156
VIN (Vehicle Identification Number) 361
VIN (vehicle identification number) 338
Viscosity
Engine oil 358
Voice control system*
Hands-free microphone 27
W
Warning sounds
Drivers seat belts 62
Parking brake 45
Warranty coverage 337
Washer fluid see Windshield washer fluid
Washing the vehicle 267
Wear pattern (tires) 262
Weights 345