2008 MERCEDES-BENZ R-CLASS MPV sensor

Display
messages 258 Display messages Possible cause/consequence Possible solution
DISTRONIC currently unavail-
able See Owner's
Manual
Distronic
* is deactivated and is tempora-
rily not operational if:
R the Distronic* cover in the radiator
grille is dirty.
R its function is impaired due to heavy rain
or snow
R the radar sensor system is temporarily
not operational, e.g. due to electromag-
netic radiation emitted by nearby TV or
radio stations or other sources of radi-
ation
R the radar sensor system has not detec-
ted any vehicles or stationary objects,
e.g. traffic signs, for a long time.
R the system is outside the operating
temperature range Distronic* becomes available again and the dis-
play message disappears when:
R
the dirt (e.g. slush) falls off 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 does not disappear:
X Clean the Distronic* cover in the radiator grille
(Y page 247).
X Restart the engine. ESP unavailable See
Owner's Manual
G
Risk of accident
ESP ®
and therefore also PRE-SAFE ®
are
temporarily unavailable. It is possible that
self diagnosis is not yet complete. BAS
has also been deactivated. X
Carefully drive a short distance at a speed
above 20 km/h.
If the display message disappears, ESP ®
is
available again. Practical advice
* optional
251_AKB; 5; 7, en-GB
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Display
messages 261Display messages Possible cause/consequence Possible solution
P To start the
engine, shift to
either P or N You attempted to start the engine while
transmission position
Ror Dwas selec-
ted. X
Shift the automatic transmission to Por N. Depress brake
to shift out of position P X
Depress the brake pedal. PRE-SAFE inoperative See
Owner's Manual G
Risk of injury
Important functions of PRE-SAFE ®
have
failed. All other occupant safety systems,
e.g. airbags, remain available. X
Visit a qualified specialist workshop. Tyre pressure
monitor inoperative
The tyre pressure monitor* is malfunc-
tioning. X
Have the tyre pressure monitor* and wheels
checked at a qualified specialist workshop. Tyre pressure
monitor inoperative No
wheel sensors The tyre pressure monitor* is deactivated
because the vehicle is fitted with wheels
that do not have suitable wheel sensors. X
Have wheels with suitable wheel sensors fitted
at a qualified specialist workshop.
Once wheels with the correct wheel sensors
have been fitted, the tyre pressure monitor*
reactivates automatically after a few minutes
of driving. Practical advi
ce
* optional
251_AKB; 5; 7, en-GB
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Display
messages 262 Display messages Possible cause/consequence Possible solution
Tyre pressure
monitor Wheel sensor miss-
ing
The tyre pressure monitor* is not receiv-
ing signals from one or more wheels
because:
R
a wheel without a suitable wheel sensor
is fitted (e.g. an emergency spare
wheel*).
R the battery on one of the wheel elec-
tronics unit is discharged.
R a wheel electronics unit has malfunc-
tioned.
A line is displayed in the multi-function
display for the tyre concerned instead of
the tyre pressure value. X
Have the tyre pressure monitor* and wheels
checked at a qualified specialist workshop.
Once wheels with suitable wheel sensors have
been fitted again, the tyre pressures are dis-
played in the multi-function display after driv-
ing for a few minutes. Tyre pressure
monitor currently unavail-
able
The tyre pressure monitor* is temporarily
deactivated. The voltage of the vehicle's
electrical system is too low or radio inter-
ference prevents the reception of sensor
signals. X
Drive on.
Once the causes have been eliminated, the tyre
pressure monitor* automatically reactivates
after a few minutes of driving. Practical advi
ce
* optional
251_AKB; 5; 7, en-GB
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Display
messages 270 Display messages Possible cause/consequence Possible solution
B Top up coolant See
Owner's Manual The coolant level is too low. X
Top up the coolant, observing the warning
notes before doing so (Y page 223).
X Have the coolant system checked at a qualified
specialist workshop if the coolant needs top-
ping up more often than usual. . Left-hand Corner-
ing light
or
Right-hand Corner-
ing light The left-hand and/or right-hand cornering
lamp* is faulty. X
Replace the bulb (Y page 306).. Left-hand dipped
beam
or
Right-hand dipped
beam The right-hand or left-hand dipped-beam
headlamp is faulty. X
Halogen headlamp: replace the bulb
(Y page 306).
X Bi-xenon headlamp*: visit a qualified special-
ist workshop. . AUTO lights inop-
erative The light sensor is faulty. Constant head-
lamp mode is switched on. X
Switch the lights to manual control in the on-
board computer (Y page 132).
X Switch the lights on and off using the light
switch. . Trailer Left-hand
turn signal
or
Trailer Right-hand
turn signal There is a malfunction in the left- or right-
hand windowbag. X
Replace the bulb. Practical advi
ce
* optional
251_AKB; 5; 7, en-GB
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Troubleshooting
293Parktronic*
Problem Possible cause/consequence Suggested solutions
Only the red segments in the
Parktronic warning display are lit.
You also hear a warning tone for
approximately two seconds.
Parktronic is deactivated after
approximately 20 seconds and
the indicator lamp in the Park-
tronic button lights up. Parktronic has malfunctioned
and has switched itself off. X
If problems persist, have Parktronic checked at a qualified spe-
cialist workshop. Only the red segments in the
Parktronic warning display are lit.
Parktronic is deactivated after
approximately 20 seconds. The Parktronic sensors are dirty
or there is interference. X
Clean the Parktronic sensors ( Ypage 247).
X Switch the ignition back on. Only the red segments in the
Parktronic warning display are lit.
Parktronic is deactivated after
approximately 20 seconds. The problem may be caused by an
external source of radio or ultra-
sound waves. X
See if Parktronic functions in a different location. Practical advice
* optional
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Vehicle electronics
339Vehicle electronics
Tampering with the engine electron-
ics
G
Risk of accident
Only have work on the engine electronics
and related components carried out at a
qualified specialist workshop which has the
necessary specialist knowledge and tools
to carry out the work required. Mercedes-
Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety
or on safety-related systems must be car-
ried out at a qualified specialist workshop.
The vehicle's roadworthiness could other-
wise be affected.
! Only have work done on the engine elec-
tronics and its associated parts, such as
control units, sensors and connector leads,
carried out at a qualified specialist work-
shop, e.g. a Mercedes-Benz Service
Centre. Otherwise, vehicle components
may wear more quickly and your vehicle's
warranty and operating permit may be inva-
lidated. Retrofitting electrical and electronic
equipment
Electrical and electronic equipment can jeop-
ardise the operating safety of your vehicle. If
equipment of this kind is retrofitted, it must
be type-approved and bear the emark. The
e mark may be obtained from the equipment
manufacturer or an authorised testing centre.
! Damage or consequential damage arising
from fitting equipment not approved
by Mercedes-Benz is not covered by the
Mercedes-Benz warranty.
If you wish to install two-way radios in the
vehicle, you must obtain formal approval.
Mercedes-Benz approves the installation of
two-way radios if such equipment is installed
professionally and a low-reflection exterior
aerial is used.
The transmission output of the two-way radio
must not exceed the maximum transmission
outputs listed. G
Risk of accident
Two-way radios may interfere with the vehi-
cle electronics and thereby jeopardise the
operational safety of the vehicle and your
own safety if: R
they do not have an exterior aerial
R the exterior aerial is not a low-reflection
aerial
R the exterior aerial has been fitted incor-
rectly G
Risk of injury
Excessive electromagnetic radiation may
also cause damage to your health and the
health of others. Using an exterior aerial
takes into account current scientific dis-
cussions relating to the possible health haz-
ards that may result from electromagnetic
fields.
For this reason, only have the exterior aerial
fitted at a qualified specialist workshop
which has the necessary specialist knowl-
edge and tools to carry out the work
required. Mercedes-Benz recommends
that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified
specialist workshop.
i Mercedes-Benz recommends the use of
an approved exterior aerial. This ensures
optimal reception quality for mobile tele- Technical data
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