2004 MERCEDES-BENZ C320 COUPE lock

84 Controls in detailLocking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp4 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:

Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.

Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.

If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.

Check the batteries in the Smart-
Key and replace them if necessary
(page 290).


Use the mechanical key to unlock
the doors (
page 288). Lock the
vehicle using the mechanical key
(
page 289).


Have the vehicle battery and the
battery connections checked by an
authorized Mercedes-Center.
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz Cen-
ter.
!If battery check lamp4 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 290).
You can obtain the required batteries
at any authorized Mercedes-Benz Cen-
ter.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing
the‹ orŒ button will lock or
unlock the vehicle accordingly.

85 Controls in detail
Locking and unlocking
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handle
Pull on door handle2.
If door was locked, locking knob1 will
move up.
Opening the trunk lid
A minimum height clearance of 7.1 ft.
(2.16 m) is required to open the trunk lid.
The handle is located above the rear li-
cense plate recess.
1Handle
Pull on handle1 and lift the trunk lid.
iIf the vehicle has previously been
locked from the outside with the
SmartKey, opening a door from the in-
side will trigger the alarm.
To cancel the alarm, do one of the fol-
lowing:

Press button Œ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.

86 Controls in detailLocking and unlockingThe trunk can also be opened from its in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 86).
Closing the trunk lid
1Handle
Lower trunk lid by pulling firmly on
grip1.

Close trunk lid with hands placed flat
on it.
Trunk lid emergency release
The emergency release button is located
on the inside of the trunk lid.
1Emergency release button
Briefly press emergency release
button1.
The trunk unlocks and the trunk lid
opens.
iThe vehicle must be unlocked.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk. Be espe-
cially careful when small children are
around.Warning!
G
Only drive with the trunk closed. Among
other dangers, such as your view being
blocked, exhaust fumes may enter the vehi-
cle interior.iTo prevent an inadvertent lockout, do
not place the SmartKey in the trunk.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.

87 Controls in detail
Locking and unlocking
Illumination of the emergency release but-
ton:

The button will flash for 30 minutes af-
ter opening the trunk.


The button will flash for 60 minutes af-
ter closing the trunk.
Automatic central locking
The doors and the trunk lid automatically
lock when the ignition is switched on and
the wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.For more information on towing the vehi-
cle, see “Towing the vehicle” (
page 313).
You can deactivate the automatic locking
mode using the control system
(
page 129).
iThe emergency release button unlocks
and opens the trunk while the vehicle is
standing or driving.
The emergency release button does
not open the trunk lid, if the vehicle
battery is discharged or disconnected.
iIf the emergency release button is
pressed and the vehicle was centrally
locked, the exterior lamps will flash and
the alarm will sound as the trunk lid
opens. To cancel the alarm, do one of
the following:

Press buttonŒ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle

is pushed or towed


is on a test stand

88 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the doors and the
trunk lid from inside using the central lock-
ing switch. This can be useful, for example,
if you want to lock the vehicle before start-
ing to drive.
The fuel filler flap will not be locked or un-
locked with the central locking switch.The switch is located in the center console.
Central locking switch1Locking
2Unlocking
Locking
Press upper half1 of the central lock-
ing switch.
If all the doors are closed, the vehicle
locks.Unlocking

Press lower half2 of the central lock-
ing switch.
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
iYou can open a locked door from in-
side. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked with the SmartKey, it will not un-
lock using the central locking switch.
If the vehicle was previously locked
with the central locking switch

while in the individual remote con-
trol mode, only the door opened
from the inside is unlocked.


while in the global remote control
mode, the complete vehicle is un-
locked when a door is opened from
the inside.

89 Controls in detail
Seats
Seats
For information on seat adjustment, see
“Adjusting” (
page 32).
Easy-entry/exit feature*
With the easy-entry/exit feature activated,
the steering wheel tilts upwards and the
driver’s seat moves to the rear.
This allows easier entry into and exit from
the vehicle when the driver’s door is
opened. However, the engine must be
turned off.
When the SmartKey is inserted in the start-
er switch and the driver’s door is closed,
the steering wheel and the driver’s seat re-
turn to their last set position.You can activate the following functions:


Steering column:
Only the steering column is adjusted.


Steering column and seat:
The steering column and the seat are
adjusted.
The easy-entry/exit feature can be
switched on or off in the convenience sub-
menu of the control system (
page 130).
Warning!
G
You must make sure that no one can be-
come trapped or injured by the moving
steering wheel and driver’s seat when the
easy-entry / exit feature* is activated, the
driver’s door is being opened and the engine
is turned off or the SmartKey is removed
from the starter switch.
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature*, which could result in an accident
and/or serious personal injury.
iTo cancel seat/steering wheel move-
ment, do one of the following:

Press the seat adjustment
switch*(
page 35).


Move the steering column stalk*
(page 38).


Press the memory button*
(page 96).

92 Controls in detailSeatsFolding head restraints back
The rear seat head restraints can be folded
backward for increased visibility.
1Release button
Press release button1.
The head restraints will fold backward.Placing head restraints upright

Pull the head restraint forward until it
locks into position.Head restraint tilt
Two different head restraint angle posi-
tions are available.

Press the release button and tilt the
head restraint to the desired position.
Warning!
G
For safety reasons, always drive with the
rear head restraints in the upright position
when the rear seats are occupied.
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
!Make sure the head restraints engage
when placing them upright. Otherwise
their protective function cannot be as-
sured.

103 Controls in detail
Lighting
Interior lighting
The controls are located in the overhead
control panel.
1Rear interior lights
2Right front reading lamp
3Rocker switch for automatic control
system
4Left front reading lampActivating automatic control

Press the rocker switch3 to center
position.
Interior lamps are switched on in dark-
ness, when you

unlock the vehicle


open a door


remove the SmartKey from starter
switch
The interior lamps are switched off follow-
ing a preset time (
page 128).Deactivating automatic control

Press the =symbol on rocker
switch3.
The interior lighting remains switched
off, even when you

unlock the vehicle


open a door


remove the SmartKey from the
starter switch
Manual control
Switching all front interior lights on and
off

Press the Wsymbol on rocker
switch3.
The front interior lights come on.

Press rocker switch3 to center
postion to activate the automatic
control.
iIf the door remains open, the interior
lamps switch off automatically after ap-
proximately five minutes, when the
SmartKey is removed or in the starter
switch position0.
An interior lamp switched on manually
does not go out automatically.