sensor MERCEDES-BENZ CL-CLASS 2007 Service Manual

558 Operation
Vehicle care
Headlamps, tail lamps, side markers,
turn signal lenses
Use a mild car wash detergent, such as
Mercedes-Benz approved Car
Shampoo, with plenty of water.Cleaning the DISTRONIC Plus*/
PRE-SAFE
® Brake* system sensors
The sensors are integrated in the front
bumpers and cannot be seen from the
outside.
1Sensor cover
2Bumper area near sensors
Switch off the ignition (page 336).
Use a mild car wash detergent, such as
Mercedes-Benz approved Car
Shampoo, with plenty of water and a
non-scratching cloth to clean sensor
cover1.
Clean a wide area of the bumpers
surrounding the sensors2.
Restart the engine after cleaning sen-
sors.
!Only use window cleaning solutions that are
suitable for plastic lamp lenses. Window clean-
ing solutions which are not suitable may damage
the plastic lamp lenses of the headlamps. There-
fore, do not use abrasives, solvents or cleaners
that contain solvents.
Never apply strong force and only use a soft,
non-scratching cloth when cleaning the lenses.
Do not attempt to wipe dirty lenses with a dry
cloth or sponge.
Otherwise you may scratch or damage the lens
surface.
!To prevent scratches or damage, never
apply strong force and only use a soft,
non-scratching cloth when cleaning the sensor
cover and/or bumper area near sensors. Do not
attempt to wipe dirty sensors and/or bumper
with a dry cloth or sponge.
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559 Operation
Vehicle care
Cleaning the Parktronic* system
sensors
1Parktronic system* sensors in front
bumper
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
sensors1 on the bumpers.Cleaning the Park Assist* system
sensors
The sensors are integrated in the front and
rear bumpers and cannot be seen from the
outside.
1Bumper area near sensors
Switch off the ignition (page 336).
!Do not apply strong pressure to the sensor
covers. Applying strong pressure may damage
the sensor covers.
Follow the instructions provided by the power
washer manufacturer on maintaining a distance
between the vehicle and the nozzle of the power
washer.
!To prevent scratches, never apply strong
force and only use a soft, non-scratching cloth
when cleaning the sensors. Do not attempt to
wipe dirty sensors with a dry cloth or sponge.

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560 Operation
Vehicle care
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.Cleaning the Dynamic Rear View
Monitor lens*
1Camera lens
Only use clean water and a soft,
non-scratching cloth to clean the cam-
era lens1.
Be careful not to apply wax to the camera
lens1 when waxing the vehicle. If neces-
sary, remove the wax using the
Mercedes-Benz approved Car Shampoo
with plenty of water.
!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.
!Do not clean the camera and the area
around the camera:

with a high-pressure cleaner

with a dry cloth and high pressure

with aggressive cleaning agents
You could otherwise damage the camera.

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583 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
DISTRONIC PLUS
currently unavailable
See Oper. ManualDISTRONIC Plus* is switched off and is
temporarily unavailable.
DISTRONIC Plus* is deactivated if:

the DISTRONIC Plus* cover in the radia-
tor grille is dirty

the radar sensors* do not sense any
other vehicles or objects, i.e. road sign
or similar to this, for a long time

the system is overheated

its function is impaired as a result of
heavy precipitation or fog

the battery voltage is insufficient
Clean the DISTRONIC Plus* cover in the radiator grille
(
page 558).
Restart the vehicle.
Try activating DISTRONIC Plus* again later.
Wait until the system cools down or the battery recovers.
DISTRONIC Plus* will be operational again without you needing to
restart the engine if:

the dirt (e.g. slush) loosens while you are driving

the system detects that the sensors* are fully available again

the message in the multifunction display disappears
DISTRONIC Plus* is switched off because
the radar sensor system* is temporarily in-
operative due to electromagnetic interfer-
ence near television and radio transmitter
stations, toll stations, speed measuring sys-
tems, etc.Wait until the message in the multifunction display disappears.
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589 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Next Service X
due in ... days
due in ... mls (km)Service X must be carried out in ... days or
after ... miles (kilometers) (
page 551).
Have the maintenance service carried out by an authorized
Mercedes-Benz Center.
Only shift to
position 'P' when
vehicle is stationaryYou have tried to Shift the automatic trans-
mission to P using the gear selector lever al-
though the vehicle is still in motion.Stop the vehicle.
Park Assist
currently unavailable
See Oper. ManualPark Assist* is deactivated because the
area around the sensors* in the front or the
rear bumper (
page 559) is dirty.
Clean the front and rear bumper (page 559).
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 ra-
dar sensor system* is temporarily inopera-
tive due to electromagnetic interference
near television and radio transmitter sta-
tions, toll stations, speed measuring sys-
tems, etc.Wait until the message in the multifunction display disappears.
Park Assist
inoperativePark Assist* is unavailable due to a mal-
function.Contact an authorized Mercedes-Benz Center as soon as
possible.
PRE-SAFE
inoperative
See Oper. ManualPRE-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.
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590 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Radar sensor
deactivated
See Oper. ManualYou 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 272).
Switch on the radar sensors* using the instrument cluster
control system.
Service X
dueYour vehicle is due for maintenance service
(
page 551).
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 551).
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591 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Shift to P or N
to start engineYou have attempted to start the engine
while the automatic transmission was set to
position R or D.Shift the automatic transmission to P or N (page 389).
Tire pressure monitor
inoperativeThe Advanced TPMS or a wheel sensor is
malfunctioning.Have the Advanced TPMS checked by an authorized
Mercedes-Benz Center.
Tire pressure monitor
inoperative
No wheel sensorsThe Advanced TPMS is deactivated because
wheels without proper sensors were in-
stalled.Have the wheel sensors installed by an authorized
Mercedes-Benz Center.
As soon as all wheels with sensors have been mounted, the
Advanced TPMS is switched back on after driving for several
minutes.
Tire pressure monitor
currently unavailableThe 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.
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598 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Service
See Oper. ManualCL 600:
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)
Brake wearThe 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.
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617 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Third brake lampThe 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.
Corner. lamp,
LeftThe left-hand corner-illuminating lamp is
malfunctioning.Replace the bulb as soon as possible
(
page 641).
Corner. lamp,
RightThe right-hand corner-illuminating lamp is
malfunctioning.Replace the bulb as soon as possible
(
page 641).
Low beam,
LeftThe left low beam lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Low beam,
RightThe right low beam lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
inoperativeThe active headlamps are malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
AUTO lamps
inoperativeThe 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):
In the instrument cluster control system, set
lamp operation to manual mode
(
page 271).
Switch off the headlamps using the exterior
lamp switch (
page 363).
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630 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Wheel sensor(s)
missingOne or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without wheel sensors
mounted (e.g. spare tire).
No pressure value is shown on the multi-
function display for the tire in question.Have the Advanced TPMS checked by an
authorized Mercedes-Benz Center.
Have the wheel sensors installed by an
authorized Mercedes-Benz Center.
The tire pressure for the respective tire is
shown in the multifunction display after a few
minutes driving.
Tire pressure
Please rectifyAdvanced TPMS:
The pressure is too low in one or more tires.
Or the tire pressures of the individual
wheels differ too radically from one
another.Check and adjust tire inflation pressure as
required (
page 534).
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