2008 MERCEDES-BENZ R-CLASS MPV engine
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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
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Page 264 of 373
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
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Page 268 of 373
Display
messages 265Display messages Possible cause/consequence Possible solution
$ At least one door is open. X
Close the doors. D The cooling fan for the coolant is faulty. X
If the coolant temperature is less than 120 †,
you can continue driving to the nearest quali-
fied specialist workshop.
X In doing so, avoid heavy loads on the engine
(e.g. driving in mountainous terrain) and stop-
and-go driving. # The battery is not being charged. Possible
causes are:
R
a faulty alternator
R a torn poly-V-belt
R a malfunction in the electronics X
Stop immediately and safely when traffic con-
ditions allow and check the poly-V-belt.
X If it has torn: do not drive on. Contact the
nearest qualified specialist workshop.
X If it is not damaged: have the vehicle checked
immediately at a qualified specialist workshop. # Battery/Alternator
Stop vehicle The battery is faulty. X
Pull over as soon as it is safe to do so.
X Do not continue driving under any circumstan-
ces.
X Consult the nearest qualified specialist work-
shop. 2 Brake wear The brake pads/linings have reached
their wear limit. X
Have the brake pads/linings replaced as soon
as possible at a qualified specialist workshop. Practical advi
ce
251_AKB; 5; 7, en-GB
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Page 272 of 373
Display
messages 269Display messages Possible cause/consequence Possible solution
D Coolant Stop car,
turn engine off The coolant is too hot. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Switch off the engine.
X Make sure that the airflow to the radiator is not
blocked, e.g. by snow, slush or ice.
X Wait until the message disappears before
restarting the engine. There is otherwise a risk
of engine damage.
X Observe the coolant temperature gauge
(Y page 125).
X If the temperature increases again, visit a quali-
fied specialist workshop immediately. D Coolant Stop car,
turn engine off The poly-V-belt may have torn. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Switch off the engine.
X Check the poly-V-belt.
X If it has torn: do not drive on. Contact the
nearest qualified specialist workshop.
X If it is not damaged: do not start the engine
again until the message disappears. There is
otherwise a risk of engine damage. Practical advi
ce
251_AKB; 5; 7, en-GB
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Page 277 of 373
Display
messages 274 Display messages Possible cause/consequence Possible solution
ò Replace air
cleaner element The engine air filter must be replaced. X
Visit a qualified specialist workshop. N Check engine oil
level when next
refuelling The engine oil level has dropped to a crit-
ical level. X
Check the engine oil level (Y page 222) and top
up the engine oil if necessary.
X Have the engine checked for leaks if the engine
oil needs topping up more often than usual. N Engine oil level
Consult workshop The engine oil level has dropped to a crit-
ical level or the measuring system is mal-
functioning.
33 X
Check the engine oil level (Y page 222).
If the engine oil level is OK:
X Visit a qualified specialist workshop.
If the engine oil level is not OK:
X Top up the engine oil.
X If the warning message disappears: consult a
qualified specialist workshop.
X If the warning message does not disappear: do
not drive on. Consult the nearest qualified spe-
cialist workshop. H Tyre pressure Cau-
tion, tyre defect
G
Risk of accident
At least one tyre is rapidly deflating. The
affected wheel is highlighted in the tyre
pressure display of the tyre pressure mon-
itor*. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Repair or change the tyre (Y page 313).33
Only for certain vehicles. Practical advi
ce
* optional
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Display
messages 275Display messages Possible cause/consequence Possible solution
H Tyre pressure
Check tyres G
Risk of accident
The pressure in one or more tyres has
dropped significantly. The affected wheel
is highlighted in the tyre pressure display
of the tyre pressure monitor*. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Check the tyres.
X Repair or change the faulty tyre if necessary
(Y page 313).
X Check the tyre pressure and correct it if nec-
essary (Y page 226).
The warning will disappear automatically after
you have been driving for a few minutes with
the corrected tyre pressure. H Please correct
tyre pressure(s) Vehicles with a tyre pressure monitor*:
the pressure of at least one tyre is too low
or there is a significant discrepancy
between the tyre pressures of the individ-
ual wheels. X
Check the tyre pressure at the next opportunity
and correct it if necessary ( Ypage 226). I Change key batter-
ies The KEYLESS GO* key batteries are dis-
charged. X
Change the batteries (Y page 305).I Key does not belong
to vehicle You have put the wrong key in the ignition
lock. X
Use the correct key. I Key not detected
The KEYLESS GO* key is not in the vehicle.
If the engine is switched off, the vehicle
can no longer be locked centrally and the
engine cannot be started. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Look for the KEYLESS GO *key. Practical advice
* optional
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Page 279 of 373
Display
messages 276 Display messages Possible cause/consequence Possible solution
I Key not detected
The KEYLESS GO* key is not detected
while the engine is running, due to radio
interference. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Operate the vehicle using the key in the ignition
lock if necessary. I Key not detected
The KEYLESS GO* key cannot be detec-
ted. X
Change the location of the KEYLESS GO key*
within the vehicle.
X Operate the vehicle using the key in the ignition
lock if necessary. I Key detected in
vehicle
The KEYLESS GO key* has been detected
in the vehicle during locking. X
Remove the KEYLESS GO key* from the vehi-
cle. I You need a new key The key no longer functions. X
Visit a qualified specialist workshop. I Pull starting but-
ton out then insert
key Continuously unable to detect the KEY-
LESS GO key*. X
Operate your vehicle using the KEYLESS GO*
key in the ignition lock.
X Visit a qualified specialist workshop. X inoperative Bat-
tery weak The battery voltage is insufficient. The
auxiliary heating/ventilation* has
switched off or cannot be switched on. X
Drive for a longer distance.
The battery is being charged. The auxiliary
heating/ventilation* is reactivated as soon as
there is sufficient battery voltage. X inoperative Refuel There is insufficient fuel in the fuel tank.
The auxiliary heating* cannot be switched
on. X
Refuel at the nearest filling station. Practical advi
ce
* optional
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Page 280 of 373
Display
messages 277Display messages Possible cause/consequence Possible solution
X inoperative See
Owner's Manual The auxiliary heating* has a temporary
malfunction or is faulty. X
When the vehicle is on a level surface and the
engine has cooled down: try to switch on the
auxiliary heating* four times, waiting for sev-
eral minutes between each attempt.
X If the auxiliary heating* does not switch on:
visit a qualified specialist workshop. ¿ There is only a small amount of fuel in the
fuel tank. X
Refuel at the nearest filling station. 4 Reserve fuel The fuel level has fallen below the reserve
range. The operation of the auxiliary heat-
ing* can no longer be guaranteed. X
Refuel at the nearest filling station. t Please enter PIN You have not yet logged on to your mobile
phone*. X
Enter the PIN for the SIM card. t Bluetooth ready The Bluetooth connection between your
mobile phone and the audio system or
COMAND APS* is not activated. X
If desired, activate the Bluetooth connection
between your mobile phone and the audio sys-
tem or COMAND APS* – please refer to the
separate operating instructions. t No telephone
inserted Your mobile phone is not inserted in the
bracket*. X
Insert mobile phone into the
bracket* ( Ypage 208). W Top up washer fluid The washer fluid level has dropped to
approximately
1
/ 3 of the total reservoir
capacity. X
Top up the washer fluid (Y page 223). Practical advi
ce
* optional
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