Page 253 of 400

253 Operation
Engine compartment
Closing
Let the hood drop from a height of
approximately 1ft (30cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when
the vehicle is new
the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnos-
tic socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz will
restrict your warranty entitlement.
More information on this subject is
available at any Mercedes-Benz
Center.
Page 306 of 400

306 Practical hintsUnlocking/locking in an emergencyUnlocking the trunk
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The lock is located next to the recessed
handle.
1Unlocking in an emergency
2Handle
Slide mechanical key out of the
SmartKey (
page 305).
Insert the mechanical key into the
trunk lid lock.
Turn the mechanical key counterclock-
wise completely to position1 and
hold it in this position.
Pull trunk lid handle2 and lift the
trunk lid.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger doors and the
trunk.
Press the central locking switch in the
cockpit (
page 91).
Check to see whether the locking
knobs on the passenger doors are
down. If necessary push them down
manually.
Slide mechanical key out of the
SmartKey (
page 305).
Lock the driver’s door with the
mechanical key (
page 305).
Check if the trunk is locked. If
necessary lock the trunk with the
mechanical key (
page 89).
!Always make sure there is sufficient
overhead clearance.
Page 347 of 400
347 Technical data
Main dimensions
Main dimensions
Model
C 230 Kompressor Sport
C240
C320
C320Sport
Overall vehicle length
178.3 in (4 528 mm)
178.3 in (4 528 mm)
178.3 in (4 528 mm)
Overall vehicle width
68.0 in (1 728 mm)
68.0 in (1 728 mm)
68.0 in (1 728 mm)
Overall vehicle height
56.4 in (1 433 mm)
56.3 in (1 429 mm)
55.6 in (1 411 mm)
Wheelbase
106.9 in (2 715 mm)
106.9 in (2 715 mm)
106.9 in (2 715 mm)
Track, front
58.8 in (1 493 mm)
58.8 in (1 493 mm)
58.8 in (1 493 mm)
Track, rear
57.6 in (1 464 mm)
57.6 in (1 464 mm)
57.6 in (1 464 mm)
Model
C 240 4MATIC
C 320 4MATIC
C32AMG
Overall vehicle length
178.3 in (4 528 mm)
178.3 in (4 528 mm)
Overall vehicle width
68.0 in (1 728 mm)
68.0 in (1 728 mm)
Overall vehicle height
56.0 in (1 422 mm)
56.1 in (1 426 mm)
Wheelbase
106.9 in (2 715 mm)
106.9 in (2 715 mm)
Track, front
58.8 in (1 493 mm)
58.8 in (1 493 mm)
Track, rear
57.6 in (1 464 mm)
58.0 in (1 474 mm)
Page 368 of 400

368 Index
Head restraint height, front seats
Manual seat 34
Power seat* 35
Head restraint height, rear seats 94
Head restraint tilt, front seats
Manual seat 34
Power seat* 36
Head restraint tilt, rear seats 96
Head restraints, rear seats
Folding back 95
Folding back with release
switch 95
Placing upright 95
Instrument cluster illumination 109
Interior rear view mirror 38
Manual seat 33
Mirrors 38
Multicontour seat* 97
Power seat* 35
Rear seat head restraints 94Seat belt height 42
Seat cushion depth 97
Seat cushion tilt
Manual seat 33
Power seat* 35
Seat fore and aft adjustment
Manual seat 33
Power seat* 35
Seat height
Manual seat 33
Power seat* 35
Seats 32
Steering column height,
electrical* 38
Steering column height,
manual 37
Steering column length,
electrical* 38
Steering column length,
manual 37
Steering wheel 36Air conditioning (cooling)
Turning off
Automatic climate control* 170
Climate control 160
Turning on
Automatic climate control* 170
Climate control 160
Air conditioning refrigerant 352
Air distribution
Adjusting
Automatic climate control* 166
Climate control 157
Air pressure see Tire inflation pressure
Air recirculation mode
Activating
Automatic climate control* 167
Climate control 158
Deactivating
Automatic climate control* 168
Climate control 159
Page 379 of 400

379 Index
Gear selector lever 23, 44
Cleaning 271
Lock 44
Position (Automatic
transmission*) 23, 142, 145
Gearshift lever 43
Global
Locking 83
Unlocking 83
Global Positioning System see GPS
Glove box 21, 216
Closing 216
Opening 216
Good visibility 148
GPS 362
GPS see COMAND*
H
Halogen-type
Front lamp bulbs 312
Hands-free microphone 27
Hard plastic trim items
Cleaning 271Hazard warning flasher 106
Switching off 106
Switching on 106
Head restraints
Front seats
Manual seat 34, 93
Power seat* 35, 94
Rear seats 94
Headlamp cleaning system* 259
Headlamp shut-off delay see Delayed
shut-off, exterior lamps
Headlamps
Automatic control 103
Bi-Xenon* 361
Bi-Xenon* type
Replacing bulbs 313
Cleaning 269
Cleaning system* 148, 259, 358
Halogen-type
Replacing bulbs 312
Refilling washer fluid 259
Switching off 51
Switching on 46
Washer fluid 358Headliner and shelf below rear window
Cleaning 271
Heated seats* 98
Height adjustment
Front seat head restraints
Manual seat 34
Power seat* 35
Rear seat head restraints 94
Seat belts 42
Steering wheel
Adjustment, electrical* 37
Adjustment, manual 37
High beam flasher 47, 106
High beam headlamps
Messages in display 294
Replacing bulbs 310, 312
Switching on 106
High beam headlamps xenon type*
Replacing bulbs 313
High mounted brake lamp 311
Page 383 of 400

383 Index
Manual seat
Adjusting 33
Adjusting backrest tilt 33
Adjusting head restraint height 34
Adjusting head restraint tilt 34
Adjusting seat cushion tilt 33
Adjusting seat height 33
Front seat head restraints 93
Seat fore and aft adjustment 33
Manual transmission 141
Gearshift lever 43
Shifting into reverse 141
Starting with 43
MAXCOOL Maximum cooling 167
MB Tex upholstery
Cleaning 272
Mechanical key 305
Memory function* 99, 363
Recalling positions from
memory 100
Storing exterior rear view mirror
parking position 101
Storing key dependent settings 100Menus 114
AUDIO 118
Control system 363
In control system 116, 117
Malfunction memory 122
NAVI* 121
Settings menu 123
Standard display 118
Submenus 115
TEL* 138
Trip computer 136
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 128
Minispare wheel 302
Bolts 304
Mounting 317
Removing 302Mirrors
Activating exterior rear view mirror
parking position* 150
Adjusting 38
Automatic antiglare* for
interior mirror 149
Automatic antiglare* for
rear view mirror 149
Exterior rear view mirror 38
Exterior rear view mirror
parking position* 136
Interior rear view mirror 38
Storing exterior rear view mirror
parking position* 101
MON 250, 363
Motor Octane Number see MON
Mph or km/h in speedometer 128
Multicontour seat* 97
Multifunction display 113, 363
Displaying gear range 144
Selecting language 128
Standard display 117
Page 386 of 400

386 IndexPedals 239
Performance
In cold weather 355
In hot weather 355
Phone book*
Loading 140
Quick search 140
Phone number*
Dialing 140
Redialing 140
Plastic and rubber parts
Cleaning 272
Playing
CDs 191
Poly-V-belt drive 363
Layout 339
Positions (Memory function*)
Recalling from memory 100
Storing into memory 100
Power assistance 239Power seat*
Adjusting backrest tilt 35
Adjusting head restraint height 35
Adjusting head restraint tilt 36
Adjusting seat cushion tilt 35
Adjusting seat height 35
Memory function* 99
Removing/installing front
head restraints 94
Seat fore and aft adjustment 35
Power train 364
Power washer 268
Power windows 200
Blocking of
rear door window operation 70
Side windows 200
Synchronizing 202
Practical hints
First aid kit 300
Fuses 332
Lamp in center console 279Lamps in instrument cluster 274
Messages in the display 280
Minispare wheel 302
Minispare wheel bolts 304
Symbol messages 284
Text messages 281
Towing the vehicle 328
Vehicle jack 301
Vehicle tool kit 300
Premium unleaded gasoline 353
Problems
While driving 49
With vehicle 17
Product information 9
Program mode selector switch 364
Automatic transmission* 146
Q
Quick search
Phone book* 140
Page 387 of 400

387 Index
R
Radio
Selecting stations 119
Station search 119
Station selection setting 132
Radio operation 179
Radio see Radio operation
Radio transmitters,
control and operation 246
Range (distance to empty)
Calling up 138
Rapid seat heating*
Switching off 98
Switching on 98
Reading lamp 27
Rear bench seat
Foldable* 212
Rear door window
Blocking operation 70
Rear fog lamp 311
Bulb 311
Switching on 105Rear lamp bulbs
Replacing 315
Rear lamps
Messages in display 293–296
Rear lamps see Tail lamps
Rear outer seats
Adjusting head restraint height 94
Rear passenger compartment,
adjustable air vents
Automatic climate control* 172
Climate control 161
Rear seat head restraints 94
Adjusting 94
Adjusting tilt 96
Folding back 95
Folding back with
switch in center console 95
Installing 97
Outer seats 96
Placing upright 95
Removing 96
Rear view mirrors see MirrorsRear window defroster 153
Rear window sunshade* 152
Reconnecting
Vehicle battery 325
Refrigerant
Air conditioning 352
Refueling 249
Regular checks 251
Reinstalling vehicle battery 324
Remote control
SmartKey 82
Remote door unlock
With Tele Aid* 230
Remote Vehicle Diagnostics 364
Removing
Minispare wheel 302
Ski sack* 212
Vehicle battery 324
Vehicle tool kit 300
Wheel 319
Wiper blades 316