2008 MERCEDES-BENZ C300 anti theft

77 Controls in detail
Locking and unlocking
Global unlocking: Grasp an outside
door handle1.

All turn signal lamps flash once.

An acoustic signal sounds once.

The locking knobs in the doors
move up.

The anti-theft alarm system is dis-
armed.

The locator lighting will also come
on if it is dark and the feature is ac-
tivated in the control system
(
page 172).
The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds of un-
locking if:

neither a door nor the trunk is opened

the central locking/unlocking switch is
not activated
Global locking: Close all doors and
touch outside of door handle1. Do
not keep your hand in the door handle
recess.
With the trunk and doors closed:

All turn signal lamps flash three
times.

An acoustic signal sounds three
times.

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s outside door handle only the driver’s
door and the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about 6 seconds un-
til battery check lamp5 (
page 73)
flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel fill-
er flap: Grasp the driver’s outside door
handle.

All turn signal lamps flash once.

An acoustic signal sounds once.

The locking knob in the driver’s
door moves up.

The anti-theft alarm system is dis-
armed.
iThe vehicle could inadvertently be unlocked
if the SmartKey with KEYLESS-GO is within 3 ft
(1 m) of the vehicle and:

an outside door handle is splashed with wa-
ter, or

you attempt to clean an outside door handle.
iYou can also lock the vehicle using the
KEYLESS-GO lock button on trunk lid, if equipped
(
page 270).

78 Controls in detail
Locking and unlocking

The locator lighting will also come
on if it is dark and the feature is ac-
tivated in the control system
(
page 172).
Global unlocking: Grasp any outside
door handle other than the driver’s out-
side door handle.

All turn signal lamps flash once.

An acoustic signal sounds once.

The locking knobs in the doors
move up.

The anti-theft alarm system is dis-
armed.

The locator lighting will also come
on if it is dark and the feature is ac-
tivated in the control system
(
page 172).
Global locking: Close all doors and
touch outside of a door handle1
(
page 76). Do not keep your hand in
the door handle recess.
With the trunk and doors closed:

All turn signal lamps flash three
times.

An acoustic signal sounds three
times.

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
Restoring to factory setting: Press
and hold buttonsŒ and‹ si-
multaneously for about 6 seconds until
battery check lamp5 (
page 73)
flashes twice.Checking batteries in the SmartKey or
SmartKey with KEYLESS-GO*
(Canada only)
Press button‹ orŒ.
The battery check lamp (
page 70) or
(
page 73) comes on briefly to indi-
cate that the SmartKey or SmartKey
with KEYLESS-GO batteries are in or-
der.
iYou can also lock the vehicle using the
KEYLESS-GO lock button on trunk lid, if equipped
(
page 270).!If the battery check lamp does not come on
briefly during check, the SmartKey or SmartKey
with KEYLESS-GO batteries are discharged.
Replace the batteries (
page 428).
You can obtain the required batteries at any
authorized Mercedes-Benz Center.
iIf the batteries are checked within signal
range of the vehicle, pressing button‹ or
Πwill lock or unlock the vehicle accordingly.


79 Controls in detail
Locking and unlocking
Loss of the SmartKey or SmartKey with
KEYLESS-GO* (Canada only)
If you lose your SmartKey, SmartKey with
KEYLESS-GO or mechanical key, you
should do the following:
Have the SmartKey or SmartKey with
KEYLESS-GO deactivated at an autho-
rized Mercedes-Benz Center.
Report the loss of the SmartKey,
SmartKey with KEYLESS-GO or the
mechanical key immediately to your
car insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a
replacement.
Opening 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
iIf the vehicle has previously been locked
with the SmartKey or KEYLESS-GO*, opening a
door from the inside will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the following:

Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.

Press button Œ or ‹ on the SmartKey
or SmartKey with KEYLESS-GO*.
In vehicles with KEYLESS-GO*:

Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.

Press the KEYLESS-GO* start/stop button
(
page 84).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
iIf you hear a warning signal you have
forgotten to switch off the low beam headlamps
or the parking lamps before opening the driver’s
door.
In addition the message
Switch Off Lights
appears in the multifunction display.
Switch off the low beam headlamps or the park-
ing lamps.
If the message
Switch Off Lights or Re-
move Key
appears in the multifunction display
remove the SmartKey from the starter switch or
switch off the automatic headlamp mode.

302 Controls in detail
Useful features
Remote door lock
If you have forgotten to lock your vehicle
and are no longer near it, you can have it
locked remotely through the Response
Center.
The vehicle can be remotely locked within
4 days after the ignition has been switched
off.
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.When you are inside your vehicle the next
time and switch on the ignition, the mes-
sage
Tele Aid Doors locked by remote
control
will appear on the multifunction
display.
Automatic Maintenance Call
The C-Class is equipped with a feature that
considerably enhances vehicle care. Just
prior to reaching a vehicle maintenance
milestone, Tele Aid transmits important ve-
hicle maintenance information that alerts
your authorized Mercedes-Benz Center of
required service. This is automatic and
does not require driver intervention. This
feature allows your preferred
Mercedes-Benz Center to significantly im-
prove the process of arranging your ser-
vice appointment and ensures that your
vehicle receives the best possible care.Stolen Vehicle Recovery services
In the event your vehicle was stolen:
Report the incident to the police.
The police will issue a numbered
incident report.
Pass this number on to the
Mercedes-Benz Response Center along
with your password issued to you when
you subscribed to the service.
The Response Center will then attempt
to covertly contact the vehicle’s
Tele Aid system. Once the vehicle is
located, the Response Center will
contact the local law enforcement and
you. The vehicle’s location will only be
provided to law enforcement.
Once the vehicle is unlocked, a Response Center
specialist might attempt to establish voice con-
tact with the vehicle occupants.
If the trunk lid handle was pulled for more than
20 seconds before door unlock authorization
was received by the Response Center, you must
wait 15 minutes before pulling the trunk lid han-
dle again.
iThe remote door lock feature is available if
the relevant telephone network is available and
data connection is possible.
iThe Automatic Maintenance Call feature is
available if the relevant telephone network is
available and data connection is possible.
iWhen the anti-theft alarm or the tow-away
alarm stays on for more than 30 seconds, a call
is initiated automatically to the Response Cen-
ter, see “Anti-theft alarm system” (
page 66).


424 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO* (Canada only),
unlock the driver’s door and the trunk us-
ing the mechanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in the direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the driv-
er’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position 1.
The locking knob moves up, the driver’s
door is unlocked.
Pull the door handle to open the driv-
er’s door.
iUnlocking the vehicle with the mechanical
key and opening the driver’s door or the trunk
with the mechanical key will trigger the anti-theft
alarm system (
page 66).
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* (Canada only) in
the starter switch.
1Unlocking
2Mechanical key

426 Practical hints
Unlocking/locking in an emergency
Fuel filler flap
Open the fuse box in the trunk
(
page 458).
1Release cable
Pull on the release cable1.
Open the fuel filler flap.Manually unlocking the transmission
gear selector lever
In case of power failure, the transmission
gear selector lever can be manually un-
locked, e.g. to tow the vehicle.
1Selector lever cover
2Unlocking mechanism
Apply the parking brake firmly.
Push the selector lever cover1 to the
left and pull it up and off.
Push the unlocking mechanism2
down and move the selector lever out
of positionP at the same time.The selector lever can now move freely
until reset to positionP.
iThis procedure does not arm the anti-theft
alarm system nor does it lock the fuel filler flap.
iThe gear selector lever is locked again when
moving it to positionP.


487 Index
A
ABS 27, 59
Indicator lamp 59, 374
Messages in display 389, 398
Accelerator position, automatic
transmission 142
Accessory weight 356
Accident 132
Air bags 36
Children 51
Front 39
Front passenger front air bag off
indicator lamp 29, 45
OCS 41
Safety guidelines 38
Side impact 40
Window curtain 40, 41
Air conditioning system see Climate con-
trol system
Air conditioning, Cooling 258, 267
Air conditioning, Refrigerant 478, 480
Air distribution 254, 263
Air pressure see Tire inflation pressure
Air recirculation mode 257, 265Air vents 247
Center air vents 248
Rear center console air vents 249
Air volume 254, 263, 268
Alarm
Audible alarm and flashing exterior
lamps (Panic alarm) 58
Alarm system see Anti-theft systems
Antiglare
Rear view mirrors 100
Anti-theft systems 66
Alarm, visual and audible 66
Anti-theft alarm system 66
Immobilizer 66
Aquaplaning see Hydroplaning
Armrest 284, 286
Ashtrays 291, 292
Aspect ratio 356
Audio Aux mode 220
AUDIO menu (Control system) 158Audio system 176
“911” emergency call 231
Audio and telephone, operation 176
Audio Aux mode 220
Audio control unit 177
Audio display 180
Bluetooth
® operation 222
Call lists 236
CD changer* 208, 214
CD operation 208
CD player 160, 208
CD, fast forward/rewind 219
CD, pause function 218
CD, submenu overview 208
Components 177
Controller 182
Example, how to use 187
Functions during a single call 240
Making calls 237
On/Off 188
Operating 185
Operating and display elements 178
Operating CD player 213
Operating safety 177
Operation 188
Overview 176