2005 MERCEDES-BENZ C CLASS COUPE Owners Manual

88 Safety and SecurityAnti-theft systemsArming tow-away alarm
Lock the vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.Disarming tow-away alarm
To prevent triggering the tow-away alarm ,
switch off the tow-away alarm feature
before towing the vehicle, or when parking
on a surface subject to movement, such as
a ferry or auto train.
The switch is located on the center con-
sole.
1 Tow-away alarm off switch
2 Indicator lamp

Switch off the ignition.

Press switch 1.
Indicator lamp 2 in switch comes on
briefly.

Exit and lock your vehicle with the
SmartKey.
The tow-away alarm remains disarmed
until you lock your vehicle again.
Canceling the alarm
To cancel the alarm:

Press the Œ or ‹ button on the
SmartKey.
or

Insert the SmartKey in the starter
switch.
iWhen you unlock your vehicle, the
tow-away protection disarms
automatically. The tow away alarm
remains disarmed until you lock the
vehicle again.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.

89
Controls in detail
Locking and unlocking
Seats
Memory function*
Lighting
Instrument cluster Control system
Manual transmission
Automatic transmission*
Good visibility
Climate control
Automatic climate control* Audio system
Power windows
Panorama roof with power tilt/sliding panel*
Driving systemsLoading
Useful features

90 Controls in detailIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.Locking and unlocking
For more information on locking and
unlocking, “Getting started” (
page 32)
and (
page 56).
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key. The locking
tabs for the mechanical key portion of the
two keys are a different color to help dis-
tinguish each key unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:

the doors


the trunk lid


the fuel filler flap
SmartKey with remote controls1 ‹ Lock button
2 Mechanical key locking tab
3 ΠUnlock button
4 Battery check lamp
5 Â Panic button* (
page 80)
iCanada only:
Only vehicles equipped with an
anti-theft alarm system* have
SmartKeys with integrated panic
button 5.

91
Controls in detail
Locking and unlocking
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. It is possible
for children to open a locked door from the
inside, which could result in an accident
and/or serious injury.!To prevent possible malfunction, avoid
exposing the SmartKey to high levels of
electromagnetic radiation.
iUSA only:
This device complies with Part 15 of
the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful
interference, and
(2) this device must accept any inter- ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause interfer- ence, and
(2) this device must accept any inter- ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.iYou can also open and close the power
windows (
page 239) and panorama
roof with power tilt/sliding panel*
(
page 244) using the SmartKey.

92 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system* is
disarmed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm sys-
tem* within approximately 40 seconds of
unlocking if:


neither door nor trunk lid is opened


the SmartKey is not inserted in the
starter switch


the central locking switch is not
activated Global locking

Press button
‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The locking knobs in the doors
move down. The anti-theft alarm sys-
tem* is armed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressing Œ only unlocks the driver’s
door and the fuel filler flap.

Press and hold buttons Œ and‹
simultaneously for about five seconds
until battery check lamp 4 flashes
twice.
The SmartKey will then function as
follows: Unlocking driver’s door and fuel filler
flap

Press button
Πonce.
All turn signal lamps flash once. The
locking knob in the driver’s door moves
up. The anti-theft alarm system*
disarmed.
Global unlocking

Press button Πtwice.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system* is
disarmed.

93
Controls in detail
Locking and unlocking
Global locking
Press button
‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The locking knobs in the doors
move down. The anti-theft alarm sys-
tem* is armed.
Restoring to factory setting

Press and hold buttons Œ and‹
simultaneously for about six seconds
until battery check lamp 4 flashes
twice. Checking the batteries

Press button
‹ orŒ .
Battery check lamp 4 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then either
the batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.

Check the batteries in the
SmartKey and replace them if
necessary (
page 383).


Use the mechanical key to unlock
the driver’s door (
page 377).


Use the mechanical key to lock the
driver’s door (
page 379).


Have the vehicle battery and the
battery connections checked
(page 401).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
iIf battery check lamp 4 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 383).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing
the ‹ orŒ button will lock or
unlock the vehicle accordingly.

94 Controls in detailLocking and unlockingLoss 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.
An authorized Mercedes-Benz Center will
be glad to supply you with a replacement.
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.
1 Locking knob
2 Inside door handle
Pull on door handle 2.
If door was locked, locking knob 1 will
move up.
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.

95
Controls in detail
Locking and unlocking
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.
1 Handle The vehicle must be unlocked.

Pull on handle
1.
The trunk lid unlocks.

Lift the trunk lid.
The trunk can also be opened from its in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 96).
Closing the trunk lid
1 Handle
Lower trunk lid by pulling firmly on
grip 1.

Close trunk lid with hands placed flat
on the trunk lid.
!Always make sure there is sufficient
overhead clearance.