2009 MERCEDES-BENZ CL COUPE sensor

Display messages
Possible causes/consequences and
X
X Solutions Parking
Guidance currently
unavaila‐
ble See
Owner's
Manual
Parking Guidance* is temporarily deactivated if:
R
the radar sensor system is inoperative, e.g. because of
electromagnetic radiation near television and radio trans-
mitters.
R the sensors in the bumpers are dirty.
R the on-board voltage is insufficient.
Parking Guidance* is operational again and the display mes-
sage disappears when:
R the dirt drops away while you are driving.
R the system detects that the sensors are fully available
again.
If the display message continues to be shown:
X Clean the bumpers (Y page 310).
X Restart the engine.
X Wait until the battery is charged sufficiently. Parking
Guidance cancelled
Parking Guidance* has been deactivated because the vehicle
is skidding.
X
Reactivate Parking Guidance* later. Parking Guidance* has been deactivated because the sensors
in the bumper are dirty or because it is malfunctioning. The
parking space symbol does not appear in the multi-function
display at speeds below 16 km/h.
X Clean the bumpers (Y page 310).
X Restart the engine.
or
X Visit a qualified specialist workshop. Parking
Guidance finished The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
PRE-SAFE inopera‐
tive See
Owner's
Manual
G
Risk of injury
PRE-SAFE ®
has malfunctioned. All other occupant safety sys-
tems, e.g. airbags, remain available.
X Visit a qualified specialist workshop. Display
messages
325Practical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions PRE-SAFE Function
currently
limited
See Own‐
er's Man‐
ual
G
Risk of accident
The PRE-SAFE ®
Brake* is temporarily inoperative if:
R the Distronic Plus* cover in the radiator grille is dirty.
R the sensors in the bumpers are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor system is temporarily inoperative, e.g. due
to electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is insufficient.
The PRE-SAFE ®
Brake* is operational again and the display
message disappears when:
R the dirt (e.g. slush) drops away while you are driving.
R the system detects that the sensors are fully available
again.
R the system is within the operating temperature range.
If the display message continues to be shown:
X Clean the Distronic Plus* cover in the radiator grille
(Y page 310).
X Clean the bumpers (Y page 310).
X Restart the engine.
X Wait until the battery is charged sufficiently. PRE-SAFE Function
limited
See Own‐
er's Man‐
ual
G
Risk of accident
PRE-SAFE ®
Brake* is defective.
BAS PLUS* or the distance warning signal may also have
failed.
X Visit a qualified specialist workshop. Radar sen‐
sor deactiva‐
ted See
Owner's
Manual
G
Risk of accident
Vehicles with Distronic* or Distronic Plus*: the radar sensor
system is deactivated.
X Check whether the radar sensor system may be activated
(Y page 411).
X Switch on the radar sensor system (Y page 226).326
Display
messagesPractical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions Radar sen‐
sor deactiva‐
ted
autom.
See Own‐
er's Man‐
ual
Vehicles with a navigation system*: the vehicle is close to a
radio-telescope facility and, therefore, must not transmit any
radar signals. The radar sensor system has switched off auto-
matically.
The following functions are unavailable:
R Distronic Plus* (Y page 235)
R BAS PLUS* (Y page 49)
R Parking Guidance* (Y page 254)
R PRE-SAFE ®
Brake* (Y page 52)
R Blind Spot Assist* (Y page 260)
X Drive on.
These functions are available again as soon as the vehicle
is far enough away from the radio telescope facility
(Y page 411). Run Flat
Indicator Check
tyre pres‐
sures
then
restart Vehicles with tyre pressure loss warning system: a tyre pres-
sure loss warning message has been displayed.
X
Set the correct tyre pressure for all tyres (Y page 298).
X Restart the tyre pressure loss warning system
(Y page 299). Run Flat
Indicator inopera‐
tive Vehicles with tyre pressure loss warning system: the tyre
pressure loss warning system is faulty.
X
Visit a qualified specialist workshop. Tyre pres‐
sure Check
tyres
G
Risk of accident
Vehicles with a tyre pressure loss warning system: the tyre
pressure loss warning system has detected a significant pres-
sure loss. A warning tone also sounds.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Check the tyres.
X Correct the tyre pressure. If necessary, set the correct tyre
pressure ( Ypage 298).
X If necessary, repair any defective tyres or change the wheel
(Y page 373).
X Restart the tyre pressure loss warning system once the tyre
pressure is correct (Y page 299). Display
messages
327Practical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions Tyre
press.
monitor currently
unavaila‐
ble
Vehicles with a tyre pressure monitor*: no sensor signals can
be received due to radio interference. The tyre pressure mon-
itor* is temporarily malfunctioning.
X
Drive on.
The tyre pressure monitor* restarts automatically as soon
as the cause has been rectified. Tyre
press.
monitor inopera‐
tive
Vehicles with a tyre pressure monitor*: the tyre pressure
monitor* is faulty.
X
Visit a qualified specialist workshop. Tyre
press.
monitor inopera‐
tive No
wheel sen‐
sors
Vehicles with tyre pressure monitor*: the wheels fitted do not
feature suitable tyre pressure sensors.
X
Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor* is activated automatically after
driving for a few minutes. Please
correct tyre pres‐
sure(s)
Vehicles with tyre pressure monitor*: the pressure is insuffi-
cient in at least one of the tyres or the pressure difference
between the individual tyres is too great. A vehicle icon is
shown in the instrument cluster.
X
Check the tyre pressures at the next opportunity. If neces-
sary, correct the tyre pressure (Y page 298).Check tyre(s)
G
Risk of accident
Vehicles with tyre pressure monitor*: the tyre pressure has
dropped significantly in one or more of the tyres. The wheel
position is displayed in the instrument cluster.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373).Caution, tyre
defect
G
Risk of accident
Vehicles with tyre pressure monitor*: the pressure has drop-
ped significantly in one or more of the tyres. The wheel posi-
tion is displayed in the instrument cluster.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373).328
Display
messagesPractical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions Wheel sen‐
sor(s) missing
Vehicles with tyre pressure monitor*: the tyre pressure sen-
sor signal for one or more of the tyres is missing. The pressure
of the affected tyre is not displayed in the instrument cluster.
X
Have the faulty tyre pressure sensor replaced at a qualified
specialist workshop. Cruise
control inopera‐
tive Cruise control is faulty.
X
Visit a qualified specialist workshop. Cruise
control
and SPEED‐
TRONIC inopera‐
tive Speedtronic and cruise control are faulty. A warning tone also
sounds.
X
Visit a qualified specialist workshop. Blind
Spot
Assist inopera‐
tive
Blind Spot Assist* is faulty.
X
Visit a qualified specialist workshop. Blind
Spot
Assist currently
unavaila‐
ble See
Owner's
Manual
Blind Spot Assist* is temporarily inoperative if:
R
the sensors in the bumpers are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating tempera-
ture range.
R the radar sensor system has switched off automatically, for
example in the vicinity of a radio telescope facility.
Blind Spot Assist* is operational again and the display mes-
sage disappears when:
R the dirt (e.g. slush) drops away while you are driving.
R the system detects that the sensors are fully available
again.
R the radar sensor system is back within the operating tem-
perature range.
If the display message continues to be shown:
X Clean the bumpers (Y page 310).
X Restart the engine. Display
messages
329Practical advice
* optional
216_AKB; 2; 3, en-GB
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,V ersion: 2.11.7.7
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Display messages
Possible causes/consequences and
X
X Solutions b AUTO
lights
inopera‐
tive The light sensor is faulty. Daytime driving lights are switched
on.
X
Switch off the daytime driving lights in the on-board com-
puter (Y page 225).
X Switch the lighting on or off using the light switch.
X Visit a qualified specialist workshop. b Rear left-
hand turn
signal
or
Rear
right-
hand turn
signal The rear left-hand or right-hand turn signal is faulty.
X
Visit a qualified specialist workshop. b Turn sig‐
nal in
left-hand
exterior
mirror
or
Turn sig‐
nal in
right-
hand exte‐
rior mir‐
ror The left-hand or right-hand turn signal on the exterior mirror
is faulty. The display message will only appear if all LEDs have
failed.
X
Visit a qualified specialist workshop. b Front
left-hand
turn sig‐
nal
or
Front
right-
hand turn
signal The front left-hand or right-hand turn signal is faulty.
X
Visit a qualified specialist workshop. b Left-hand
main beam
or
Right-
hand main
beam The left-hand or right-hand main beam headlamp is faulty.
X
Change the bulb (Y page 369).344
Display
messagesPractical advice
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PARKTRONIC
Problem
Possible causes/consequences and
X XSolutions Only the red segments
in the PARKTRONIC
warning display are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds and
the indicator lamp in
the PARKTRONIC but-
ton lights up. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 310).
X Switch the ignition back on. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in a different location. Headlamps
Problem
Possible causes/consequences and
X XSolutions The headlamps are mis-
ted up on the inside. Air humidity is very high.
X
Drive with the headlamps switched on.
The headlamps are demisted after a short distance. The headlamp housing is not sealed and moisture has been able
to enter.
X
Have the headlamps checked at a qualified specialist workshop. 360
TroubleshootingPractical advice
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Notes on the technical data
.............394
Genuine Mercedes-Benz parts .........394
Vehicle electronics ...........................394
Vehicle identification plates ............396
Service products and capacities .....396
Vehicle data, CL 500 ........................400
Vehicle data, CL 500 4MATIC ..........400
Vehicle data, CL 600 ........................401
Vehicle data, CL 63 AMG ..................401
Vehicle data, CL 65 AMG ..................402
Tailgate opening dimensions ...........402
Tyres and wheels .............................. 402
Frequencies for garage door open-
ers* .................................................... 408
24-GHz radar sensor system*
(country overview) ............................411 393Technical data
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