2008 MERCEDES-BENZ CLS500 alarm

Contents
Safety and Security........................... 63
Occupant safety................................... 64
Air bags .......................................... 66
Occupant Classification System ..... 71
Seat belts ....................................... 76
Preventive occupant safety
(PRE-SAFE
®) ................................... 80
Active head restraints .................... 81
Children in the vehicle .................... 82
Blocking of
rear door window operation ........... 87
Panic alarm .......................................... 88
Activating ....................................... 88
Deactivating ................................... 88
Driving safety systems ......................... 89
ABS ................................................ 89
BAS ................................................ 90
Adaptive Brake ............................... 91
EBP................................................. 92
ESP
®............................................... 92
Anti-theft systems................................ 97
Immobilizer..................................... 97
Anti-theft alarm system .................. 97
Controls in detail............................... 99
Locking and unlocking ....................... 100
SmartKey ..................................... 100
SmartKey with KEYLESS-GO* ...... 103
Checking batteries in the
SmartKey or SmartKey with
KEYLESS-GO* .............................. 108
Loss of the SmartKey or
SmartKey with KEYLESS-GO* ...... 108
Opening the doors
from the inside ............................. 108
Opening the trunk ........................ 109
Closing the trunk.......................... 111
Trunk emergency release ............. 114
Valet locking ................................ 115
Automatic central locking ............ 116
Locking and unlocking
from the inside ............................. 116
Seats ................................................ 118
Front seat active head restraints . 118
Rear seat head restraints ............. 118
Lumbar support............................ 119
Multicontour seat* ....................... 120
Seat heating* ............................... 121
Seat ventilation* .......................... 122Memory function ............................... 123
Storing positions into memory ..... 124
Recalling positions from memory. 124
Storing exterior rear view mirror
parking position ........................... 125
Lighting ............................................. 126
Exterior lamp switch .................... 126
Combination switch ..................... 130
Corner-illuminating
front fog lamps* (CLS 550 with
Bi-Xenon* headlamps only).......... 130
Hazard warning flasher ................ 132
Interior lighting in the front .......... 133
Interior lighting in the rear ........... 134
Door entry lamps ......................... 135
Trunk lamp ................................... 135
Instrument cluster ............................. 136
Adjusting instrument cluster
illumination .................................. 136
Coolant temperature indicator ..... 137
Resetting trip odometer ............... 137
Tachometer.................................. 138
Outside temperature indicator ..... 138
Control system .................................. 139
Multifunction display.................... 139
Multifunction steering wheel........ 140

36 Getting started
The “Getting started” section provides an
overview of the vehicle’s most basic func-
tions. First-time Mercedes-Benz owners
should pay special attention to the infor-
mation given here.
If you are already familiar with the basic
functions described here, the “Controls in
detail” section will provide you with further
information. The corresponding page refer-
ences are located at the end of each seg-
ment.
Unlocking
Unlocking with the SmartKey
SmartKey with remote control
1‹Lock button
2ŠOpening button for trunk
3ŒUnlock button
4ÂPanic buttonPress unlock buttonŒ on the
SmartKey.

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.
Get in the vehicle and insert the
SmartKey in the starter switch.
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. A child’s un-
supervised access to a vehicle could result
in an accident and/or serious personal
injury.

37 Getting started
Unlocking
For more information, see “Locking and
unlocking” (
page 100).
Unlocking with KEYLESS-GO*
With the KEYLESS-GO function, you can
lock and unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without in-
serting the SmartKey in the starter switch. Pull an outside 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.
Get in the vehicle.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 103).
iOpening a door causes the window on that
door to open slightly. They will return to the up
position when the door is closed.
!The side windows will not open or close if
the battery is discharged or the windows are cov-
ered with ice. As a result, you may no longer be
able to properly close the door. Do not attempt
to force the door shut. Doing so may damage the
door or the side window. Correct the condition
that prevents the windows from operating before
attempting to close the door.
Warning!G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
iTo unlock the vehicle, the SmartKey with
KEYLESS-GO must be outside the vehicle, no fur-
ther than approximately 3 feet (1 meter) away
from the door.
iOpening a door causes the window on that
door to open slightly. They will return to the up
position when the door is closed.
!The side windows will not open or close if
the battery is discharged or the windows are cov-
ered with ice. As a result, you may no longer be
able to properly close the door. Do not attempt
to force the door shut. Doing so may damage the
door or the side window. Correct the condition
that prevents the windows from operating before
attempting to close the door.

62 Getting started
Parking and locking
Locking with the SmartKey
After exiting the vehicle, press lock
button‹ on the SmartKey
(
page 36).
With the trunk and all doors closed:

All turn signal lamps flash three
times.

An acoustic signal sounds three
times.
For more information, see “Factory
setting” (
page 106).

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
For more information, see “Locking and
unlocking” (
page 100).
Locking with KEYLESS-GO*
1Lock button
After exiting the vehicle, press lock
button1 at the outside door handle or
on the trunk lid.
With the trunk and all doors closed:

All turn signal lamps flash three
times.

An acoustic signal sounds three
times.
For more information, see “Factory
setting” (
page 106).

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
For more information, see “Locking and
unlocking” (
page 100).
iIf you hear a warning signal you have forgot-
ten 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
Remove Key
appears in the multifunction dis-
play remove the SmartKey from the starter
switch or switch off the automatic headlamp
mode.
!Failure to switch off the exterior lamps when
leaving the vehicle may result in a discharged
battery.

63 Safety and Security
Occupant safety
Panic alarm
Driving safety systems
Anti-theft systems

88 Safety and Security
Panic alarm
An audible alarm and flashing exterior
lamps will operate briefly.
1Â buttonActivating
Press and hold  button for at least
1 second.
Deactivating
Press  button again.
or
Insert SmartKey or the SmartKey with
KEYLESS-GO* in starter switch.
or
Press the KEYLESS-GO* start/stop
button (
page 39).
The SmartKey with KEYLESS-GO* must
be inside the vehicle.
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 interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference 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 interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.

97 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
With the SmartKey
Remove the SmartKey from the starter
switch.
The immobilizer is activated.
With KEYLESS-GO*
Press the KEYLESS-GO start/stop but-
ton once.
The engine is turned off.
Open the driver’s door.Deactivating
With the SmartKey
Turn the SmartKey in the starter switch
to position2 (
page 38).
With KEYLESS-GO*
Start the engine by means of the
start/stop button on the gear selector
lever.
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door

the trunk

the hood
The alarm will stay on, even if the activat-
ing element (a door, for example) is imme-
diately closed.
The alarm system will also be triggered
when

someone attempts to raise the vehicle
(only vehicles with tow-away alarm)

the vehicle is opened with the
mechanical key

someone opens a door from the inside
iIn case the engine cannot be started (yet the
vehicle’s battery is charged), the system is not
operational. Contact an authorized
Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA), or
1-800-387-0100 (in Canada).

98 Safety and Security
Anti-theft systems
Arming the alarm system
The indicator lamp located in the central
locking switch in the center console.
1Indicator lamp
Lock the vehicle with the SmartKey or
KEYLESS-GO*.
The turn signal lamps flash three times
to indicate that the alarm system is
armed. The indicator lamp1 begins to
flash after approximately 30 seconds
after arming the alarm system.
Disarming the alarm system
Unlock the vehicle with the SmartKey
or KEYLESS-GO*.
The turn signal lamps flash once to
indicate that the alarm system is
disarmed.Canceling the alarm
With the SmartKey
Insert the SmartKey in the starter
switch.
or
Press button Œ or ‹ on the
SmartKey.
With KEYLESS-GO*
Pull an outside door handle.
The SmartKey with KEYLESS-GO* must
be within 3 ft (1 m) of the vehicle.
or
Press the KEYLESS-GO* start/stop
button (
page 39).
The SmartKey with KEYLESS-GO* must
be inside the vehicle.
iIf the alarm stays on for more than
30 seconds, a call to the Response Center is ini-
tiated automatically by the Tele Aid system
(
page 256) provided Tele Aid service was sub-
scribed to and properly activated, and that nec-
essary cellular service and GPS coverage are
available.
iIf the turn signal lamps do not flash three
times, one of the following elements may not be
properly closed:

a door

the trunk
Close the respective element and lock the vehi-
cle again.
iThe alarm system will rearm automatically
after approximately 40 seconds if neither a door
nor the trunk was opened.