2006 MERCEDES-BENZ C280 Mechanical key

390 Practical hintsUnlocking/locking in an emergencyUnlocking and opening the trunk
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking in an emergency
2Handle

Insert the mechanical key into the
trunk lid lock until it stops.

Turn the mechanical key
counterclockwise to position1.
The trunk lid unlocks.

Pull on handle2.
The trunk opens.

Turn the mechanical key back and
remove it from the trunk lid lock.
Locking the vehicle
If you can not lock the vehicle with the
SmartKey, do the following:
Close the passenger door, the rear
doors and the trunk.

Press the central locking switch in the
center console (
page 107).

Check to see whether the locking
knobs on the doors have moved down.

If necessary push them down manually.

Remove the mechanical key out of the
SmartKey (
page 389).

Check whether the trunk is locked.

If necessary, lock the trunk with the
mechanical key (
page 106).
Except for the driver’s door, the vehicle
should now be locked.
!The trunk lid swings open upwards
automatically. Always make sure there
is sufficient overhead clearance.

391 Practical hints
Unlocking/locking in an emergency
1Locking
Insert the mechanical key into the
driver’s door lock until it stops.

Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
The release button is on the right-hand
side of the luggage compartment behind
the side trim.1Side trim
2Release button

Open the trunk.

Remove the side trim1 from the
right-hand side of the luggage compart-
ment.

Turn release button2 clockwise as far
as will go.
The fuel filler flap is released.

Open the fuel filler flap from outside.
Warning!
G
If you operate the emergency release but-
ton, be careful of the sharp edges so that
you do not injure yourself.

396 Practical hintsReplacing SmartKey batteriesSmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key
(page 389).
1Mechanical key
2Slide
3Battery compartment

Insert the mechanical key1 in direc-
tion of arrow in side opening.

Using mechanical key1, push gray
slide 2 to unlatch battery compart-
ment 3.

Pull battery compartment3 out of the
housing in direction of arrow.
4Battery
5Contact spring

Remove the batteries4 in direction of
arrow.

Using a lint-free cloth, insert new
batteries4 under the contact
spring5 with the positive terminal (+)
side facing up.

Return battery compartment3 into
housing until it locks into place.

Slide mechanical key1 back into the
SmartKey.

Check the operation of the SmartKey.

458 IndexControl system submenus 132, 134
Convenience 153
Instrument cluster 143
Lighting 149
Time/Date 145
Vehicle 152
Controller Area Network see CAN system
Coolant 301, 444
Anticorrosion/antifreeze
quantity 445
Capacities 440, 441
Checking coolant level 295, 301
Messages in display 371–373
Temperature 293
Temperature gauge 25, 128
Corner-illuminating front fog lamps* 123
Replacing bulbs 398
Cruise control 247, 450
Message in display 374
Cup holder 259, 260
Cleaning 346
Curb weight 331
Customer Assistance Center see CACD
Date display, setting 147, 148
Daytime running lamp mode 120
Setting 149
Deep water see Standing water
Defogging windshield
Automatic climate control*
(Canada only) 192
Climate control 181
Defrosting, Front
Automatic climate control*
(Canada only) 191
Climate control 181
Defrosting, Rear 175
Delayed shut-off
Exterior lamps 151
Interior lighting 152
Department of Transportation see DOT
Difficulties
While driving 56
With starting 50
Digital clock see clock
Digital speedometer 135Dimensions, vehicle 438
Direction of rotation (tires) 307
Displays
Digital speedometer 135
Maintenance service indicator 338
Messages in display 374
Multifunction display 130
Outside temperature 135
Symbol messages 369
Text messages 360
Vehicle status messages
memory 139, 358
Distance to empty (range),
Trip computer 156
Door control panel 30
Doors
Entry lamps 126
Locking/unlocking, SmartKey 98
Message in display 374
Opening from inside/outside 100,
102
Remote door unlock (Tele Aid*) 272
Unlocking, Mechanical key 389

463 Index
J
Jack 383
Jacking up the vehicle 407
Jump starting 415
K
Key, mechanical 389
Key, SmartKey
Batteries 101
Battery check lamp 101
Changing batteries 396
Factory setting 100
Locking/unlocking 32, 100
Locking/unlocking, Global
setting 100
Locking/unlocking, Selective
setting 100
Loss of 102
Messages in display 376
Opening and closing the power
windows 243
Opening and closing the tilt/sliding
sunroof* 243
Positions in starter switch 33Remote control 98
Starting the engine 48, 49
Turning off the engine 59
Unlocking, Trunk lid 102
Valet locking 106
Kickdown 165, 451
Kilopascal 332
L
Labels 428
Certification 428
Emission control information 428
Emission control vacuum line
routing 428
Lamp sensor
Message in display 378
Lamps, exterior 398, 399
Light sensor 378
Messages in display 377, 378, 379,
380
Lamps, indicator and warning
ABS 25, 350
Battery (SmartKey) 100
Brakes 25, 351Engine diagnostics 352, 355
Engine malfunction 25, 352–353
ESP
®
25, 354
Fog lamps 118
Front passenger front air bag off 27,
68
Fuel reserve 25, 354
High beam headlamps 25
Instrument cluster 350, 355
Low beam headlamps 25
Maintenance service indicator 338
Rear fog lamp 118
Seat belt telltale 25
SRS 25, 63, 355
Turn signals 25
Language, Setting 143
LATCH-type child seat anchors see
Children in the vehicle
Leather upholstery, Cleaning and
care of 348
License plate lamps
Messages in display 378
Replacing bulbs 399

464 IndexLight alloy wheels
Cleaning 346
Technical data 434, 435
Light sensor see Lamp sensor
Lighter see Cigarette lighter
Lighting
Parking lamps 118
Lighting, Exterior and interior 118
Limp Home Mode 169
Loading see Vehicle loading
Loading terminology 331
Loading the vehicle 307
Locator lighting 121, 150
Locking knob 451
Loss of keys 102
Loss of Service and Warranty Information
Booklet 427
Low beam headlamps
Indicator lamp 25
Messages in display 378, 379
Replacing bulbs 398, 401
Switching on 52
Lubricants 440
Technical data 440
Lumbar support* 112M
Main dimensions 438
Main fuse box
In passenger compartment 422
Mainodometer 130
Maintenance 12, 338
Calling up service indicator
display 339
Clearing service indicator
message 339
FSS (Canada vehicles) 338
Maintenance System
(U.S. vehicles) 338
Resetting service indicator 340
Service indicator message 338
Service term exceeded 339
Maintenance System
(U.S. vehicles) 338, 451
Manual headlamp mode see Headlamps
Manual seat see Seat, Manual 36
Manual transmission 160, 161
Gearshift lever 48, 161
Shift positions 161
Starting the engine 49
Maximum load rating, Tires 332
Maximum loaded vehicle weight 332Maximum tire inflation pressure 332
MB Tex upholstery, Cleaning and
care of 348
Mechanical key 389
Memory function* see Steering wheel
Menus see Control system
Microphone, Hands-free 29
Minispare wheel see Spare wheel
Mirrors
Adjusting 43
Auto-dimming* 171
Exterior rear view mirror 43
Exterior rear view mirror,
Parking position* 117, 154, 172
Interior rear view mirror 43, 170
MOE tires see MOExtended system*
(Canada only)
MOExtended system* 411
MOExtended system* (Canada only) 320
MON 452
Motor Octane Number see MON
Multicontour seats* (Canada only) 113
Multifunction display 130, 452
Changing settings see Contro system
menus and Control system
submenus