Page 46 of 406

43 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Trunk lid emergency release
(vehicles built prior to September 2001)
The emergency release button (1) is located in the trunk
lid.
Briefly press emergency release button (1).
All doors, the fuel filler flap, and the trunk unlock; and
the trunk lid opens.
The vehicle production date (e.g. 09 / 01) can be found
on the certification label, which is located on the
driver’s door pillar, see page 375.Note:
The emergency release button (1) only unlocks and
opens the trunk while the vehicle is not in motion.
Important!
The emergency trunk lid release button (1) does not
open the trunk lid, if the trunk has been locked using
the mechanical key or the vehicle battery is discharged
or disconnected.
Illumination of the emergency release button (1):
The button will blink for 30 minutes after opening the
trunk.
The button will blink for 60 minutes after closing the
trunk.
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Page 85 of 406

82 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
When you sell your vehicle we strongly urge you to give
notice to the subsequent owner that it is equipped with
an “SRS” by alerting them to the applicable section in
the Operator’s Manual.
• Do not use handles above doors for placing
such items as coat hangers etc.• An airbag system component within the
steering wheel gets hot after the airbag has
inflated. Do not touch.• Improper work on the system, including
incorrect installation and removal, can lead to
possible injury through an unintended
activation of the “SRS”.• In addition, through improper work there is a
risk of rendering the “SRS” inoperative or
causing unintended airbag deployment. Work
on the “SRS” must therefore only be performed
by an authorized Mercedes-Benz Center.
• For your protection and the protection of
others, when scrapping the airbag unit or
emergency tensioning retractor, our safety
instructions must be followed. These
instructions are available from your
authorized Mercedes-Benz Center.• Given the considerable deployment speed and
the textile structure of the airbags, there is the
possibility of abrasions or other injuries
resulting from airbag deployment.
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Page 98 of 406

95 Memory function
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Memory function
(model C 320 only, optional on model C 240)
The memory and stored position buttons are located on
the doors.
1Memory button, used to store selected positions
which can be retrieved by pressing
2Stored position button
Turn to position “1”, “2”, or “3”Together with the driver’s seat position you can store
the positions for steering wheel and exterior rear view
mirrors.
For the front passenger seat you can store the seat
position.
Three stored positions for the driver’s seat are available
for each of the two electronic keys.
This is only possible if you select “ON” in the menu
“SETTINGS KEY-DEPENDENT”. Refer to individual
setting menu “CONVENIENCE” – “SETTINGS KEY-
DEPENDENT”, see page 134.
Wa r n i n g !
Do not activate the memory function while driving.
Activating the memory function while driving
could cause the driver to lose control of the vehicle.
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Page 149 of 406

146 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Night security illumination
At low ambient light conditions and with the engine
having been switched off, the exterior lamps (fog lamps
and parking lamps) switch on for added illumination,
(except in daytime running mode). After the last door
has been closed the lamp-on time period commences.
See the individual setting menu “LIGHTING” –
“HEADLAMPS DELAYED SWITCH–OFF” on page 128,
for instructions on how to activate the function.
The lamp-on time period for night security illumination
can be set at several different timed levels from 0 (off) to
60 seconds, see the individual setting menu
“LIGHTING” – “HEADLAMPS DELAYED SWITCH–OFF”
on page 128.Notes:
Within 10 minutes after closing the last door the night
security illumination can be reactivated by opening a
door.
If after switching the engine off, no doors are opened or
if after opening the doors they are not closed, the night
security illumination will switch off automatically
after 60 seconds.
Deactivating night security illumination temporarily:
Turn the electronic key in starter switch to position 0
then to position 2 and back to position 0 again before
getting out of the vehicle. The night security
illumination will not be activated when the door is
opened.
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Page 200 of 406
197 Interior equipment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Power windows
The control panel is located on the driver’s door. Switches for:
1left, front
2right, front
3left, rear
4right, rear
There are individual switches in the front passenger
door and the rear doors for the respective windows.
Turn electronic key in starter switch to position 1 or 2.
Opening the windows:
Press the switch to resistance point.
Closing the windows:
Pull the switch to resistance point.
Release switch when window is in desired position.
P 54.25-2259-26
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Page 206 of 406

203 Interior equipment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Interior lighting
1Rear interior lights
Press the button to switch the rear passenger
compartment lights on / off.
2Right front reading lamp
Press the button to switch the reading lamp on or
off. The right reading lamp will be switched on or
off.
3To switch off automatic function:
Press the rocker switch.The interior lighting remains switched off, even
when centrally unlocking the vehicle or opening a
door or the electronic key is removed from the
starter switch.
4To select automatic function:
Press the rocker switch to the center position.
Interior lamps are switched on in darkness, when
unlocking the vehicle, opening a door or removing
the electronic key from starter switch.
Interior lamps are switched off (soft fade) delayed,
when locking the vehicle, closing the doors or
inserting the electronic key in starter switch.
However, there will be no delay when the electronic
key is in starter switch position 2.
5Interior lamps, front:
Press rocker switch in to switch front interior lamps
on. The interior lighting stays on while the rocker
switch is pressed in.
Switching off the front interior lighting:
Press rocker switch to position (3) or (4).
6Left front reading lamp:
Press the button to switch the reading lamp on or
off. The left reading lamp will be switched on or off.
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204 Interior equipment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Notes:
The time delay for the interior light to switch off after
the electronic key is removed from the starter switch
can be adjusted in the individual setting menu
“LIGHTING” – “INT. ILLUMINATION DELAYED
SWITCH-OFF”. See page 128.
To prevent the vehicle battery from being discharged
with doors open, all interior lamps switch off after
approximately 5 minutes, when the electronic key
removed or in starter switch position 0.
An interior lamp switched on manually does not go out
automatically. Before leaving the vehicle, make sure that
all interior lamps are switched off.Door entry lamps
The appropriate entry lamp switches on if a door is
opened in darkness and if the interior lighting is
switched to automatic function.
The entry lamp switches off automatically when the
door is closed.
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Page 350 of 406

347 Towing the vehicle
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Towing the vehicleImportant!
When towing the vehicle, please, note the following:
With the automatic central locking activated and the
electronic key in starter switch position 2, the vehicle
doors lock if the lef t front wheel as well as the right rear
wheel are turning at vehicle speeds of approximately
9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking. See the
individual setting menu “VEHICLE” – “AUTOMATIC
DOOR LOCK” on page 131.
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.
Notes:
The selector lever will remain locked in position “P” and
the electronic key cannot be turned in the starter switch
if the battery is disconnected or discharged. See battery
on page 342 or jump starting on page 344.
Transmission selector lever, manually unlocking, see
page 350.
Wa r n i n g !
Prior to towing the vehicle with all wheels on the
ground, make certain that the electronic key is in
starter switch position 2.If the electronic key is left in the starter switch
position 0 for an extended period of time, it can no
longer be turned in the switch. In this case, the
steering is locked. To unlock, remove electronic key
from starter switch and reinsert.When towing another vehicle, observe that the
gross vehicle weight of the vehicle being towed
does not exceed the towing capacity of your vehicle.
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