2008 MERCEDES-BENZ CL-Class ECU

76 Safety and SecurityDriving safety systems
When the distance to the forward vehicle is
too small, the distance warning lampl
comes on in the instrument cluster. If you
approach the forward vehicle very quickly,
you will hear a warning tone.
If you do not apply the brakes yourself or
maneuver around a sensed obstacle, the
vehicle will automatically initiate light
braking. PRE-SAFE
® (page 56) is activat-
ed when the distance to the vehicle ahead
at your current speed is so close that
PRE-SAFE
® Brake will not be capable of
slowing the vehicle sufficiently.
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Canada 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.
Removal, tampering, or altering of the device will
void any warranties, and is not permitted. Do not
tamper with, alter, or use in any non-approved
way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Warning!
G
PRE-SAFE
® Brake will only respond with
brake assistance if it has clearly detected an
object. Detection can be impeded by


dirty or covered sensors


snowfall or heavy rain


disturbance from other radar sources


strong radar reflection such as in park-
ing garages
PRE-SAFE
® Brake uses radar signals that
are not reflected well by narrow objects and
absorptive materials. For this reason BAS
Plus will not react to


persons and animals


approaching traffic or cross-traffic
PRE-SAFE
® Brake may not detect narrow ve-
hicles driving in front of you, such as motor-
cycles and vehicles driving offset from your
vehicle center.

77 Safety and Security
Driving safety systems
To maintain the proper distance to the ve-
hicle in front of you and thus prevent a
rear-end collision, you must apply the
brakes yourself.
Immediately brake the vehicle to avoid
a collision.
Under no circumstances should the
driver await the intermittent warning
sound before braking. See the follow-
ing warning note.
The intermittent warning sound ceases
and the distance warning lampl
goes out when the necessary distance
to the vehicle ahead is again
established.
Warning!
G
PRE-SAFE
® Brake brakes your vehicle with a
maximum of 13 ft/s
2 (4 m/s
2). This corre-
sponds to about 40% of the maximum decel-
eration ability of your vehicle. This
automatic braking is intended only to ini-
tiate the braking if the driver has not already
done so. The driver must apply the brakes in
order to prevent a collision.
PRE-SAFE
® Brake applies the brake pedal
automatically which results in the brake
pedal moving. Therefore keep driver’s foot
area clear at all times, including the area un-
der the brake pedal. Objects stored in this
area may impair pedal movement which
could interfere with the braking ability of the
PRE-SAFE® Brake.
Do not place your foot under the brake pedal
– your foot could become caught.
Warning!
G
An intermittent warning sounds and the dis-
tance warning lampl in the instrument
cluster is illuminated if PRE-SAFE
® Brake
calculates that the distance to the vehicle
ahead and your vehicle’s current speed indi-
cate that PRE-SAFE
® Brake will not be capa-
ble of slowing the vehicle sufficiently to
maintain the preset following distance,
which creates a danger of a collision.
Immediately brake your vehicle to increase
the distance between your vehicle and the
vehicle driving in front of you. The warning
sound is intended as a final caution that you
have not interceded with your own braking
inputs to avoid a potentially dangerous situ-
ation. Do not wait for the operation of the
warning signal to intercede with your own
braking, as that will result in potentially dan-
gerous emergency braking which will not al-
ways result in an impact being avoided.
Tailgating increases the risk of an accident.

78 Safety and SecurityDriving safety systemsPRE-SAFE
® Brake can react to stationary
obstacles such as standing or parked vehi-
c le s a t roa d s pe eds of up to ap proxim a tel y
40 mph (70 km/h).

Activating and deactivating: Activate
or deactivate PRE-SAFE
® Brake using
the instrument cluster control system
(
page 298).
After the function has been activated,
indicator : appears on the
left-hand side of the multifunction dis-
play.PRE-SAFE
® Brake does not always clearly
interpret complex traffic situations. If a vi-
sual and/or acoustic warning is issued in
an uncritical driving situation, or if the ve-
hicle brakes lightly, you can interrupt the
PRE-SAFE® Brake maneuver by


pressing down all the way on the accel-
erator or using kickdown


releasing the brake pedal
The PRE-SAFE
® Brake maneuver is termi-
nated immediately when


you avoid the obstacle by evasive
steering


you drive less than 9 mph (15 km/h)


an obstacle can no longer be identified
ahead of you


the system no longer senses the risk of
a collisionAfter a hard collision or damage to the
front of the vehicle from an accident, have
the settings and operation of the radar
sensors checked by an authorized
Mercedes-Benz Center.
Warning!
G
If you do not receive visual or acoustic warn-
ing signals, PRE-SAFE
® Brake has either not
recognized the collision risk, has been deac-
tivated or is malfunctioning. Apply the
brakes yourself to avoid a collision.
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PRE-SAFE
® Brake will remain passive while
DISTRONIC Plus* is switched on (
page 443).

79 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
When leaving the vehicle, always take the
SmartKey or SmartKey with KEYLESS-GO*
with you, and lock the vehicle. The engine
can be started by anyone with a valid
SmartKey or SmartKey with KEYLESS-GO*
that is left inside the vehicle.
Activating
With the SmartKey: Remove the
SmartKey from the starter switch.

With the KEYLESS-GO*: Turn off the
engine (
page 366) and open the driv-
er’s door.
Deactivating

Switch on the ignition (
page 365).
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 activating
element (a door, for example) is immedi-
ately closed.
The alarm system will also be triggered
when


the vehicle is opened with the
mechanical key


a door is opened from the inside
To cancel the alarm after it has been trig-
gered, see “Canceling the alarm”
(
page 80).
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Starting the engine will also deactivate the
immobilizer.
In case the engine cannot be started (yet the ve-
hicle’s battery is charged), the system is not op-
erational. Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).

80 Safety and SecurityAnti-theft systems1Indicator lamp
Arming: Lock your vehicle with the
SmartKey or KEYLESS-GO*.
The turn signal lamps flash three times
to indicate that the vehicle is locked.
The indicator lamp1 flashes to indi-
cate that the alarm system is armed.

Disarming: Unlock your vehicle with
the SmartKey or KEYLESS-GO*.
The turn signal lamps flash once to in-
dicate that the alarm system is dis-
armed.
Canceling the alarm
To cancel the alarm, do one of the follow-
ing:
Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.

Press the Œ or ‹ button 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 but-
ton (
page 366).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
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If 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 522) provided Tele Aid service was sub-
scribed to and properly activated, and that nec-
essary mobile phone, power supply and GPS
coverage are available.
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If the turn signal lamps does 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.
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The alarm system will rearm automatically
again after approximately 40 seconds if no door
was opened.

260 Control systemsCOMAND vehicle menuIn this menu, you can program the follow-
ing vehicle functions:
Setting night security illumination
(Exterior Lighting Delayed Switch-off)
Use this function to set whether and how
long you would like the exterior lighting to
illuminate during darkness after exiting the
vehicle and both doors closed.
The exterior lighting automatically goes
out after the delayed switch-off time has
expired.
You can select:

“0 sec.”, the delayed switch-off feature
is deactivated


“15 sec.”, “30 sec.”, “45 sec.”, or
“60 sec.”, the delayed switch-off fea-
ture is activated

Select “Vehicle”.
The main area is active.

Selecting “Exterior Lighting Delayed
Switch-off” menu: Slide omp or
rotateymz.

Confirming selection: Press n.

Selecting length of time: Slide qmr
or rotate ymz.

Confirming selection: Press n.
or

Select “Vehicle”
“Vehicle”
“Exte-
rior Lighting Delayed Switch-off”.
A selection list appears.
The current setting is indicated by a
dotR.
Function
Page
Exterior Lighting Delayed
Switch-off
260
Locator Lighting
261
Exterior Mirror Convenience
Settings
262
Automatic Locking
263
Easy Entry/Exit Feature
264
Interior Ambient Light
265
Interior Lighting Delayed
Switch-off
266
Rear-window Sunshade
267
Trunk Opening-height Restriction*
268
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The components and operating principles of
COMAND can be found on (
page 83).
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You can reactivate this function within
10 minutes by opening a door.

261 Control systems
COMAND vehicle menu

Selecting length of time: Slide qmr
or rotate ymz.

Confirming selection: Press n.
To activate night security illumination:

Select delayed switch-off period (see
above).

Turn the exterior lamp switch to
position* before turning off the en-
gine.
Locator lighting on/off
With the locator lighting feature activated
and the exterior lamp switch in
position* (
page 391), the following
lamps will switch on during darkness when
the vehicle is unlocked from the outside:


Parking lamps


Tail lamps


License plate lamps


Front fog lamps


Door entry lamps in the mirror


Side marker lamps
The locator lighting switches off when the
driver’s door is opened.
If you do not open a door after unlocking
the vehicle with the SmartKey, the lamps
will switch off automatically after approxi-
mately 40 seconds.

Select “Vehicle”.
The main area is active.

Selecting “Locator Lighting” func-
tion: Slide omp or rotate ymz.

Confirming selection: Press n.

Switching locator lighting on or off:
Press n.
or

Select “Vehicle”
“Vehicle”
“Loca-
tor Lighting”.
A checkmark appears when the locator
lighting is switched on.
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The components and operating principles of
COMAND can be found on (
page 83).


347 Control systems
Voice Control troubleshooting
Voice Control troubleshooting
Help function
To support the user, the Voice Control Sys-
tem contains an extensive help function.
The help function gives you:

General hints on how to best use the
Voice Control System


A listing of all available commands
Help commands
“Help voice control”
Using the command “Help voice control”
will give you information on how to best
use the Voice Control System.
“Help”
In a main menu, help can be accessed at
any time by saying the command “Help”.
The Voice Control System will then read
out the available functions and commands
of all systems.I n a s u b m e n u , h e l p c a n a l s o b e a c c e s s e d a t
any time by saying the command “Help”.
The Voice Control System will then read
out an option list of all available functions
and commands available in the particular
submenu.
You can also use the help function to ac-
cess help for a specific system. To access
help for the phone operation, you would
speak the command “Help Telephone”.
If you wish to execute the last command
read out:

Press!.
Help window
You can use the help window to view a se-
lection of valid commands on the
COMAND display.
The help functions can be switched on or
off via COMAND in the “System settings”
menu (
page 257).
Entering digits and spelling
Entering digits

Digits from “Zero” to “Nine” may be
used.


Speaking phone numbers in digit
blocks of 3 to 5 digits has proven a
very reliable method for the input of
phone numbers.
Spelling


The letters of the English alphabet and
the digits 0 - 9 may be used.


Speak the letters in blocks of 5 - 7 let-
ters at a time.


Speak each individual letter clearly.