2008 MERCEDES-BENZ R-CLASS MPV check engine

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
251_AKB; 5; 7, en-GB
wobuchh,
Version: 2.10.6 2008-05-11T14:51:51+02:00 - Seite 274Dateiname: 6515_1825_02_buchblock.pdf; preflight

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
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 275 ZDateiname: 6515_1825_02_buchblock.pdf; preflight

Troubleshooting
284 Problem Possible cause/consequence Suggested solutions
±
The yellow engine diagnos-
tics warning lamp comes
on while the engine is run-
ning. Vehicles with a diesel engine: the
fuel tank has run dry. X
Start the engine three to four times after refuelling.
Emergency running mode is cancelled. The vehicle need not be
checked. ±
The yellow engine diagnos-
tics warning lamp comes
on while the engine is run-
ning. There may be a malfunction:
R
in the fuel injection system
R in the exhaust system
R in the ignition system (on vehi-
cles with a petrol engine)
The emission limit values may be
exceeded and the engine may be
running in emergency mode. X
Have the vehicle checked as soon as possible at a qualified spe-
cialist workshop. H
The yellow tyre pressure
monitor* warning lamp is
on. G
Risk of accident
The tyre pressure monitor* has
detected a sudden or significant
pressure loss in at least one of
the tyres. X
Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do so.
X Observe the additional messages in the multi-function display
(Y page 255).
The warning light will go out after the flat tyre has been changed
and you have been driving for a few minutes. <
The red seat belt warning
lamp lights up for 6 sec-
onds after the engine
starts up 34
. The seat belt warning lamp
reminds the driver and front
passenger to fasten their seat
belts. X
Fasten your seat belt (Y page 94).34
Only for certain vehicles. Practical advice
* optional
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 284 Dateiname: 6515_1825_02_buchblock.pdf; preflight

Troubleshooting
291Problem Possible cause/consequence Suggested solutions
Vehicles with a petrol engine:
The engine is not running
smoothly and is misfiring. There is a malfunction in the
engine electronics or a mechani-
cal component of the engine con-
trol unit. X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist work-
shop.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. A coolant temperature of over
120 °C is displayed. You also
hear a warning signal. The coolant level is too low. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently. X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 223). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the
radiator fan may be faulty. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently. X
If the coolant temperature is less than 120 °C, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. The engine does not switch off. The ignition lock is faulty. X
Open the fuse box in the engine compartment ( Ypage 334).
X Remove fuse 120 using the fuse extractor.
The engine stops.
If you wish to start the engine again:
X Replace the fuse. Practical advice
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 291 ZDateiname: 6515_1825_02_buchblock.pdf; preflight

Troubleshooting
292 Automatic transmission
Problem Possible cause/consequence Suggested solutions
The transmission has problems
shifting gear The transmission is losing oil. X
Have the transmission checked at a qualified specialist workshop
immediately. The acceleration ability is deteri-
orating.
The transmission no longer
changes gear. The transmission is in emergency
mode.
It is only possible to shift into
2nd
gear and reverse gear. X
Stop the vehicle.
X Move the selector lever to P.
X Turn the key to position 0(Y page 76) in the ignition lock.
X Wait at least 10 seconds before restarting the engine.
X Move the selector lever to position Dor R.
If D is selected, the transmission shifts into 2ndgear; if Ris selec-
ted, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist workshop
immediately. Practical advice
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 292 Dateiname: 6515_1825_02_buchblock.pdf; preflight

Troubleshooting
297Problem Possible cause/consequence Suggested solutions
The engine cannot be started
using the key. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating* or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 323).
or
X Jump-start the vehicle (Y page 329).
or
X Consult a qualified specialist workshop. Practical advice
* optional
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 297 ZDateiname: 6515_1825_02_buchblock.pdf; preflight

Troubleshooting
299Problem Possible cause/consequence Suggested solutions
The vehicle cannot be started
using the KEYLESS GO key and
the KEYLESS GO button. The KEY-
LESS GO key is in the vehicle. A door is open. The key can there-
fore not be detected as easily. X
Close the door and try to start the vehicle again. You did not depress the brake
when starting the engine. X
Depress the brake and press the KEYLESS GO button. There is interference from a pow-
erful source of radio waves. X
Start your vehicle using the KEYLESS GO key in the ignition lock. You have lost the KEYLESS GO
key. X
Have the KEYLESS GO key cancelled at a Mercedes-Benz Service
Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. Trailer towing*
Problem Possible cause/consequence Suggested solutions
The ball coupling cannot be
locked.
The key cannot be removed from
the ball coupling. G
Risk of accident
The ball coupling is dirty.
The trailer coupling is damaged. X
Remove the ball coupling and clean it (Y page 248). If the ball cou-
pling still cannot be locked, remove the ball coupling. It must no
longer be used to tow a trailer, as safe operation is not guaranteed.
X Have the entire trailer coupling checked at a qualified specialist
workshop. Practical advice
* optional
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 299 ZDateiname: 6515_1825_02_buchblock.pdf; preflight

Towing and tow-starting
330
X
Electrical consumers can be switched on
again. Do not switch the lights on, however,
as this will overload the battery.
X Remove the jump lead from earth
point 1and negative terminal 3first,
then from positive terminal 2and positive
terminal 4, each time disconnecting from
the battery on your own vehicle first.
i The message Battery protection:
some convenience functions cur-
rently not available may appear in the
multi-function display. It disappears as
soon as the battery is sufficiently charged.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Towing and tow-starting
Points to remember
G
Risk of accident
If you tow the vehicle, you must use a rigid
towing bar if:
R the engine is not running
R there is a brake system malfunction
R the voltage supply or the vehicle's elec-
trical system is damaged
The electric power steering and the brake
force booster do not work when the engine
is not running. Greater braking force will
then be required and the brake pedal travel
will be longer. If necessary, depress the
brake pedal with maximum force.
Do not tow the vehicle if the key cannot be
turned in the ignition lock. If this is the case,
the steering is locked and the vehicle can-
not be steered.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehi-
cle.
It is better to have the vehicle transported
than to have it towed. When towing, observe the legal requirements
in all countries concerned.
!
When towing, pull away slowly and with-
out jerking. If the tractive power is too high,
the vehicles could be damaged.
! Do not use the towing eye for recovery,
as this will damage the vehicle. If in doubt
recover the vehicle with a crane.
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/h must
not be exceeded.
With towing distances over 50 km, the
entire vehicle needs to be lifted up and
transported.
! On vehicles with KEYLESS GO*: use the
key instead of the KEYLESS GO * button.
Turn the key to position 2in the ignition
lock and set the automatic transmission to
N. Then turn the key back to 0and leave it
in the ignition lock.
! Only secure the tow cable or towing bar
to the towing eyes. You may otherwise
damage the vehicle. Practical advice
* optional
251_AKB; 5; 7, en-GB
wobuchh
,V ersion: 2.10.6
2008-05-11T14:51:51+02:00 - Seite 330 Dateiname: 6515_1825_02_buchblock.pdf; preflight