2008 MERCEDES-BENZ CL-Class brake sensor

601 Operation
Vehicle care
Cleaning the driving systems sensors
The sensors are integrated in the front and
rear bumpers and cannot be seen from the
outside. They work with the following sys-
tems:

BAS Plus*


PRE-SAFE
® Brake*


Blind Spot Assist*


Park Assist*


Advanced Parking Guidance*
1Bumper area near sensors

Switch off the ignition (
page 365).

Use a mild car wash detergent, such as
Mercedes-Benz approved Car Sham-
poo, with plenty of water and a soft,
non-scratching cloth to clean the
bumper area near sensors.
!
To prevent scratches or damage to the sur-
face, never apply strong force and only use a
soft, non-scratching cloth when cleaning the
bumper area near sensors. Do not attempt to
wipe a dirty bumper with a dry cloth or sponge.

632 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Next Service X
Due in ... days
Due in ... mls (km)
Service X must be carried out in ... days or
after ... miles (kilometers) (
page 592).

Have the maintenance service carried out by an authorized
Mercedes-Benz Center.
Only Shift to
Position 'P' When
Vehicle Is Stationary
You have tried to Shift the automatic trans-
mission to park positionP using the gear
selector lever although the vehicle is still in
motion.

Stop your vehicle as soon as it is safe to do so.

Shift the automatic transmission to park positionP.

Engage the electronic parking brake (
page 412).
Park Assist
Currently Unavailable
See Oper. Manual
Park Assist* is deactivated because the
area around the sensors* in the front or
the rear bumper (
page 601) is dirty.

Clean the front and rear bumper (
page 601).
Park Assist* is deactivated because the
battery voltage is insufficient.

Have the battery checked by an authorized Mercedes-Benz
Center.
Park Assist* is switched off because the
radar sensor system* is temporarily inop-
erative due to electromagnetic interfer-
ence near television and radio transmitter
stations, toll stations, speed measuring
systems, etc.

Wait until the message in the multifunction display disappears.
Park Assist
Inoperative
Park Assist* is unavailable due to a mal-
function.

Contact an authorized Mercedes-Benz Center as soon as
possible.

635 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Parking Guidance
Finished
Advanced Parking Guidance* The vehicle is
in the end position.
The display message disappears automatically.
PRE-SAFE
Inoperative
See Oper. Manual
PRE-SAFE
® itself has failed. All other occu-
pant safety systems, such as the air bags,
are still available.

Contact an authorized Mercedes-Benz Center as soon as
possible.
Radar Sensors
Deactivated
See Oper. Manual
You attempt to activate DISTRONIC Plus*,
Park Assist* or PRE-SAFE
® Brake* even
though you have switched off the radar sen-
sors* on the vehicle.

Check if the radar sensors* may be switched on (
page 302).

Switch on the radar sensors* using the instrument cluster
control system.
Service X
Due
Your vehicle is due for maintenance service
(page 592).

Have the maintenance service carried out by an authorized
Mercedes-Benz Center.
Service X Exceeded
by X days
by XXX mls (km)
Service X must be carried within the next ...
or before you have driven ... miles (kilome-
ters).

Have the maintenance service carried out by an authorized
Mercedes-Benz Center as soon as possible.
!
Failure to have the vehicle maintained in ac-
cordance with the Maintenance Booklet and
maintenance service indicator at the designated
times/mileage will result in vehicle damage not
covered by the Mercedes-Benz Limited
Warranty. For more information, see “Mainte-
nance” (
page 592).

637 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Tire Pressure Monitor
Currently Unavailable
The Advanced TPMS is unable to monitor
the tire inflation pressure due to:

a nearby radio interference source


the on-board voltage is too low


excessive wheel sensor temperatures
As soon as the causes for the malfunction are no longer present,
the Advanced TPMS automatically becomes active again after a
few minutes driving.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated. Do
not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.

645 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Service
See Oper. Manual
CL 600 and CL 65 AMG only:
The brake system sensors are malfunction-
ing. The brake system continues to function
normally with full brake force boost.

Continue driving with added caution.

Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
(USA only)(Canada only)
Check
Brake Pad Wear
The brake pads have reached their wear
limit.

Have the brake pads replaced as soon as
possible.
!
Brake pad thickness must be visually
checked by a qualified technician at the intervals
specified in the Maintenance Booklet.

664 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Check
Center Brake Lamp
The high mounted brake lamp is malfunc-
tioning. This message will only appear if all
light emitting diodes have stopped working.

Contact an authorized Mercedes-Benz
Center as soon as possible.
Check Left
Cornering Light
The left-hand corner-illuminating lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 688).
Check Right
Cornering Light
The right-hand corner-illuminating lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 688).
Check
Left Low Beam
The left low beam lamp is malfunctioning.

Contact an authorized Mercedes-Benz
Center as soon as possible.
Check
Right Low Beam
The right low beam lamp is malfunctioning.

Contact an authorized Mercedes-Benz
Center as soon as possible.
Active Headlamps
Inoperative
The active headlamps are malfunctioning.

Contact an authorized Mercedes-Benz
Center as soon as possible.
Auto Lamp Function
Inoperative
The light sensor is malfunctioning. Daytime
driving lamps are switched on.

Contact an authorized Mercedes-Benz
Center as soon as possible.
To switch off the headlamps (U.S. vehicles only):

Switch off daytime running lamps in the in-
strument cluster control system
(page 301).

Turn the exterior lamp switch to position0
(page 391).

748 Index
Distance warning lamp 31, 614
Driving hints 458
Increasing distance 458
Increasing time interval 457
Intermittent signal tone 446
Lever 449
Menu 448
Messages in display 625
Sensor cover 599
Setting a higher speed 453
Setting a slower speed 454
Setting following distance 457
Setting the current speed 453
Setting to last stored speed
(“Resume” function) 455
Warning and indicator lamps 446
Document holder 516
Door
Control panel 38
Entry lamps 399
Inside door handle 362
Locking 354, 360
Locking with Tele Aid 529
Messages in display 627, 659
Opening from inside vehicle 362
Opening from outside 354, 360Power closing assist 363
Unlocking 354, 359
Unlocking with Tele Aid 529
DOT 586
Downhill driving
Cruise control 439
Drink holder see Cup holder
Drinking and driving 539
Drive-dynamic multicontour seats*
Adjusting (COMAND) 278
Drive-dynamic function
(COMAND) 281
Multicontour adjustments
(COMAND) 278
Driving 406
Abroad 547
Hydroplaning 543
In winter 545
Instructions 406, 539
Problems 411
Safety systems 65
Through standing water 546
With DISTRONIC Plus* 458
Driving maneuver (COMAND) 233
Driving off 542Driving safety systems
ABS 65
Adaptive Brake Lights
(CL 600, USA only) 67
BAS 67
BAS Plus 68
EBP 70
Electronic traction system 72
ESP
®
70
Driving systems 437
ABC 461
Advanced Parking Guidance* 471
Cruise control 437
DISTRONIC Plus* 443
Driving safety systems 65
Park Assist* 467
Parktronic system* 463
Rear View Camera* 477
Vehicle level control (ABC) 462
Driving tips 424
Kickdown 424
DVD 112
Audio (COMAND) 112
Changer (COMAND) 116
Changer (Voice Control) 333
Ejecting (COMAND) 118

753 Index
Lock button 356
Locking and unlocking 356
Loss of 361
Messages in display 661
Opening button for trunk 356
Panic button 64
Remote control 356
Restoring to factory setting 361
Selective setting 360
Starting the engine 407
Switching on ignition with 367
Turning off engine 415
Unlock button 356
Kickdown 424
Kilopascal 586
Knee bag 46L
Labels 722
Certification 722
Emission control information 723
Tire and Loading Information 565
Vacuum line routing diagram 723
Lamp bulbs, exterior 688
Lamps, exterior
Front 689
Light sensor 664
Rear 689
Lamps, indicator and warning
ABS 31, 65, 608
Air bag Off 46
Battery check lamp (SmartKey with
KEYLESS-GO*) 360
Battery check lamp (SmartKey) 355
Brake warning lamp 31
Brakes 609
Combination low tire pressure
malfunction telltale 31, 618
Distance warning lamp* 31, 614
DISTRONIC Plus* 31, 446, 614
Electronic parking brake 31, 610
Engine diagnostics 31, 612Engine malfunction 31, 612
ESP
®
31, 609, 614
Front passenger
front air bag off 51, 620
High beam headlamp 31
Maintenance service indicator 592
Park Assist* 31
Parktronic* 31
Seat belt telltale 31, 615
SRS 31, 617
TPMS malfunction telltale 31, 618
Turn signals 31
Language (COMAND) 258
LATCH-type child seat anchors see
Children in the vehicle
Lever
For automatic transmission
(gear selector lever) 417
For cruise control 438, 449
For DISTRONIC Plus* 449
License plate lamps
Messages in display 666
Replacing bulbs 689
Light alloy wheels, Cleaning 604
Light sensor
Message in display 664