Instruments and warning lights
28
Airbag system
Monitoring the airbag system
The warning light
comes on for a few seconds when the ignition is switched on.
There is a fault in the system if the warning light does not go out or comes on or flashes
while driving . This also applies if the warning light does not come on when the
ignition is switched on.
The following text will be displayed in the information display*:
AIRBAG FAULT
The functionality of the airbag system is also monitored electronically when one airbag
has been switched off.
Front airbag or side passenger airbag deactivated using the diagnostic equip-
ment:
The warning light
lights up for 3 seconds after switching on the ignition and then
flashes again for 12 seconds.
The following situation applies if the ai rbag has been switched off using the
switch for the airbag* in the storage compartment:
The warning light
comes on for 3 seconds after the ignition has been switched
on.
The deactivation of the airbag is indicated by the lighting up of the indicator light
in the interior lighting page 113.WARNING
Have the airbag system checked immediat ely by a specialist garage if a fault
exists. Otherwise, there is a risk of the airbag not being activated in the event of
an accident.
Note
Further information about switching off airbags page 113.
Coolant temperature/coolant level
The warning light comes on for a few seconds
2) when the ignition is switched on.
The coolant temperature is too high or the coolant level too low if the warning light
does not go out or flashes while driving.
3 peeps sound as an additional warning signal.
In this case stop and switch the engine off and check the coolant level; top up the
coolant as necessary.
Do not continue your journey if for some reason it is not possible under the condi-
tions prevailing to top up with coolant. Keep the engine switched off and obtain
professional assistance from a specialist garage, otherwise it could lead to severe
engine damage.
If the coolant is within the specified range, the increased temperature may be caused
by an operating problem at the coolant fan. Check the fuse for the coolant fan, replace
it if necessary page 178, “Fuse assignment in engi ne compartment - version 1” or
page 179, “Fuse assignment in engine compartment - version 2”.
Do not continue driving if the warning light does not go off although the fluid is at the
correct level and also the fuse of the fan is in proper order. Contact a specialist garage
to obtain assistance.
Please refer to the following guidelines page 152, “Cooling system”.
The following text will be displayed in the information display*: STOP CHECK COOLANT SERVICE MANUAL
WARNING
If you must stop for technical reasons, then park the vehicle at a safe
distance from the traffic and switch of f the engine and switch on the hazard
warning light system page 48.
Take care when opening the coolant expa nsion bottle. If the engine is hot,
the cooling system is pressurized - risk of scalding! It is best to allow the engine
to cool down before removing the cap.
2)The warning light on vehicles fitted with information display does not come on after switching
the ignition on, but only if the coolant temperature is too high or the coolant level is too low.
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Instruments and warning lights29
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Do not touch the coolant fan The coolant fan may switch on automatically
even if the ignition is off.
Thickness of the brake pads*
The warning light
comes on for a few seconds when the ignition is switched on.
If the warning light comes on, contact a specialist garage immediately and have the
brake pads on all of the wheels inspected.
A peep sounds as an additional warning signal.
The following text will be displayed in the information display*: CHECK BRAKE PADS
Windshield washer fluid level*
The warning light
comes on when the ignition is swit ched on if there is insufficient
fluid in the windshield washer system. Top up with liquid page 159.
A peep sounds as an additional warning signal.
The following text will be displayed in the information display*: TOP UP WASH FLUID
Fuel reserve
The warning light
comes on, if the fuel level is still below 7 litres.
A peep sounds as an additional warning signal.
The following text will be displayed in the information display*: PLEASE REFUEL
Note
The Text in the information display* goes out only after refuelling and driving a short
distance.
Engine oil
The warning light
lights up red (low oil pressure)
The warning light comes on for a few seco nds when the ignition is switched on
3).
Stop the vehicle and switch the engine off if the warning light does not go off within
a few seconds after switching on the ignition or flashes while driving. Check the oil
level and top up with oil as necessary page 151.
3 peeps sound as an additional warning signal.
Do not continue your journey if for some reason it is not possible under the condi-
tions prevailing to top up with oil. Keep the engine switched off and obtain profes-
sional assistance from a specialist garage, otherwise it could lead to severe engine
damage.
Do not drive any further if the warning light remains on even if the oil is at the correct
level. Do not run the engine not at idling speed either. Contact the nearest specialist
garage to obtain professional assistance.
The following text will be displayed in the information display*:
STOP! OIL PRESS. STOP MOTOR! SERVICE MANUAL
The warning light
lights up yellow* (oil quantity too low)
If the warning light lights up yellow, there is not the correct quantity of oil in the engine.
Check as soon as possible the oil level or top up page 151 with engine oil.
A peep sounds as an additional warning signal.
The following text will be displayed in the information display*: CHECK OIL LEVEL
When opening the bonnet, the warning light goes out. If no engine oil has been replen-
ished, the warning light will come on again after driving about 100 km.
The warning light
flashes yellow* (engine oil level sensor faulty)
A fault on the engine oil level sensor is indicated additionally by an audible signal and
the warning light coming on several times after the ignition has been switched on.
WARNING (continued)
3)The warning light on vehicles fitted with information display does not come on after switch-
ing the ignition on, but only if a fault exists or the engine oil level is too low.
s2rc.book Page 29 Thursd ay, April 22, 2010 10:58 AM
Instruments and warning lights
30
In this case have the engine inspected without delay by a specialist garage.
The following text will be displayed in the information display*:
OIL SENSOR WORKSHOP!
WARNING
If you must stop for technical reasons, then park the vehicle at a safe
distance from the traffic and switch off the engine and switch on the hazard
warning light system page 48.
The red oil pressure light
is not an oil level indicator! One should there-
fore check the oil level at regular inte rvals, preferably after every refueling
stop.
Open door*
The warning light
comes on, if one or several doors are opened.
The warning light on vehicles fitted with information display comes on when switching
the ignition off. If a door or the boot lid is opened.
The warning light on vehicles fitted with information display goes out after switching
the ignition off.
Antilock brake system (ABS)*
The warning light
shows the functionality of the ABS and the Electronic Differential
Lock (EDL)*.
The warning light comes on for a few seconds after the ignition has been switched on
or when starting the engine. The warning light goes out after an automatic check
sequence has been completed.
A fault in the ABS
The system is not functioning properly if the ABS warning light
does not go out
within a few seconds after switching on the ignition, does not light up at all or lights up
while driving. The vehicle will only be br aked by the normal brake system. Visit a
specialist garage as quickly as possible and adjust your style of driving to take account of the fault in the meantime since you will no
t know the extent of the fault and in how
far the effect of the antilock brakes is affected.
Further information about ABS page 126, “Antilock brake system (ABS)*”.
A fault in the entire brake system
If the ABS warning light
comes on together with the brake system warning light
(handbrake must be released), there is a fault not only in the ABS but also in another
part of the brake system .
Electronic Differential Lock (EDL)*
The EDL is a part of the ABS. A fault in the EDL is indicated by the lighting up of the ABS
warning light
in the instrument cluster. Have the vehicle inspected immediately by
your nearest specialist garage.
Models fitted with ESP are equipped with electronic differential lock (EDL).
If a significant fault occurs in the ABS syst em, a warning signal sounds additionally (3
peeps).
Further information on the EDL page 124.
WARNING
If the brake system warning light
comes on together with the ABS
warning light
stop the vehicle immediately an d check the brake fluid level in
the reservoir page 154, “Brake fluid”. If the fluid level has dropped below the
MIN marking, do not drive any further - risk of accident! Obtain professional
assistance.
Pay attention to the following instruct ions before checking the brake fluid
level and opening the bonnet page 148, “Working in the engine compart-
ment”.
If the brake fluid is at the correct leve l, the ABS control function has failed.
The rear wheels may then block very rapi dly when braking. In certain circum-
stances, this can result in the rear end of the car breaking away - risk of skid-
ding! Drive carefully to the nearest sp ecialist garage and have the fault
rectified.
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Instruments and warning lights31
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Traction control system (TCS)*
The warning light
comes on for a few seconds when the ignition is switched on.
The warning light flashes when a control cycle is activated while driving.
The warning light will come on and remains on if the TCS is switched off or if there is a
fault in the system.
The fact that the TCS system operates together with the ABS means that the TCS
warning light will also come on if the ABS system is not operating properly.
If the warning light comes on immediately after starting the engine, the TCS system
can be switched off for technical reasons. In this case, the TCS system can be switched
on again by switching the ignition on and off. If the warning light goes out, the TCS
system is fully functional again.
Further information about the TCS page 125, “Traction control system (TCS)”.
Electronic stability programme (ESP)*
The warning light
comes on for a few seconds when the ignition is switched on.
Components of the ESP system also include the Traction Control System (TCS), the
Electronic Differential Lock (EDL) and the Antilock Brake System (ABS).
The warning light flashes when a control cycle is activated while driving.
The warning light will come on and remains on if the ESP is switched off or if there is a
fault in the system.
The fact that the ESP system operates together with the ABS and the EDL means that
the ESP warning light will also come on if the ABS system is not operating properly.
If the warning light comes on immediately after starting the engine, the ESP system
can be switched off for technical reasons. In this case, the ESP system can be switched
on again by switching the ignition on and off. If the warning light goes out, the ESP
system is fully functional again.
Further information on the ESP page 123, “Electronic stability programme (ESP)*”.
Note
If the battery has been disconnected and reconnected, the warning light
comes on
after switching on the ignition. The warning light must go out after driving a short
distance.
Alternator
The warning light
comes on after the ignition has been switched on. It should go
out after the engine has started.
If the warning light does not go out after the engine has started, or comes on when
driving, drive to the nearest specialist garage. The vehicle battery will be discharged in
this case so switch off all non-essential electrical components.
A peep sounds as an additional warning signal.
Caution
If the warning light
comes on when driving and in addition the warning light
(cooling system fault) also comes on in di splay, you must then stop the car immedi-
ately and switch the engine off - risk of engine damage!
Brake system
The warning light
comes on for several seconds afte r the ignition is switched on.
If the warning light stays on when the ignition is switched on or comes on while
driving, there is a fault in the brake system. Visit the nearest specialist garage immedi-
ately and have the brake system inspected.
The following text will be displayed in the information display*:
STOP BRAKE FLUID SERVICE MANUAL
3 peeps sound as an additional warning signal.
One should get used to high pedal forces, long braking distances and long free play of
the brake pedal when driving to the next specialist garage.
For further information on the brake system page 125, “Brakes”.
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Instruments and warning lights
32
Handbrake applied
The warning light
also comes on if the handbrake is applied. An audible warning is
also given if you drive the vehicle for at least 3 seconds at a speed of more than 5 km/h.
The following text will be displayed in the information display*:
HANDBRAKE ON
WARNING
Pay attention to the following instruct ions before checking the brake fluid
level and opening the bonnet page 148, “Working in the engine compart-
ment”.
If the brake system warning light
does not go out a few seconds after
switching on the ignition or comes on when driving, stop immediately and
check the brake fluid in the reservoir page 154, “Brake fluid”. If the fluid level
has dropped below the MIN marking, do no t drive any further - risk of accident!
Obtain professional assistance.
Seat belt warning light*
The warning light
comes on after the ignition is switched on as a reminder to fasten
the seat belt.
In the event that the driver is not restrained, a warning signal sounds for 6 seconds.
The following text will be displayed in the information display*:
FA S T E N S E AT B E LT
Further information on the seat belts page 102, “Seat belts”.
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Unlocking and locking35
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Locking from outside
The securing knob will move upwards or downwards in the door when
unlocking or
locking.
Locking from inside
All closed vehicle doors are locked by pressi ng in the securing knobs from the inside.
The doors cannot be opened from the outs ide when the securing knobs have been
pressed in. The vehicle doors can be opened from the inside as follows:
the door is unlocked by actu ating the door-opening lever;
The door opens upon actuating the door-opening lever again.Note
The opened door cannot be locked with the securing knob. This prevents the
possibility of forgetting the key in the locked vehicle.
The opened side doors at the rear and the front passenger door are locked by
pressing in the securing knob and slamming the door closed.
Please refer to the safety guidelines page 35.
Child safety lockThe child safety lock prevents the re ar door from being opened from the
inside.
The rear doors are equipped with a child safe ty lock. You can switch the child safety
lock on and off using the vehicle key.Switching child safety lock on– Use the vehicle key to turn the slit in the rear door to the left in the direction of the arrow fig. 31 .Switching child safety lock off– Use the vehicle key to turn the slit to the right against the direction of the arrow.
So long as the child safety lock is switched on it is not possible to open the door from
the inside with the door opening lever. In this case the door can be opened only from
the outside.Central locking system*DescriptionUnlocking or locking the vehicle causes all doors to be unlocked or locked at the same
time by the central locking system. The boot lid is unlocked when opening. It can be
opened by pressing the hand grip above the licence plate page 38, fig. 34 .
Operation of the central locking system is possible:
from the outside using the vehicle key page 37,
using the button for the central locking system page 37,
by using the remote control page 39.
with the securing knobs in the doors page 37, fig. 33 - only for vehicles which
are not fitted with electrically operated power windows (only for locking).
Warning light and securing knobs in the doors
All the securing knobs move upwards when unlocking.
The driver door must be closed when locking. Other doors can also be closed after
locking.
Fig. 31 Child safety locks on the
rear doors
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Unlocking and locking
36
All the securing knobs move downwards when locking. If this is not the case, the rele-
vant door must be opened on ce again and properly closed.
The warning light flashes in the driver door, next to the securing knob, to confirm that
the vehicle has been correctly locked. The warning light will not flash if the safe
securing system is deactivated page 36.
This is not the case, however, for vehicles with an anti-theft alarm system* since the
indicator light is showing that the system is active.
Convenience operatio n of the windows
One can open and close the electrically powered windows when unlocking and
locking the vehicle page 43, “Window convenience operation”.
Opening a single door*
This function makes it possible to only unlock the driver's door. The other doors
remain locked and are only unlocked when the command is repeated.
If you wish, you can have a sp ecialist garage activate the function of the single door
opening mode.
WARNING
Locking the doors prevents involuntary opening in an exceptional situation (an
accident). Locked doors prevent unwanted entry into the vehicle from outside,
for example at road crossings. Locked doors do, however, make it more difficult
for rescuers to get into the vehicle in an emergency - danger to life!
Note
In the event of an accident in which the airbags are deployed, the locked doors are
automatically unlocked in order to enable rescuers to gain access to the vehicle.
Only the front doors can be unlocked and locked using the key if the central locking
system fails. You can lock or unlock ma nually the other doors and the boot lid.
Emergency locking of the door page 38.
After locking the vehicle via the central lo cking system, optically check if all the
doors have been locked - posi tion of the securing knobs.
Safe securingThe central locking system is equipped with a safe securing system. Locking the
vehicle from the outside causes the door locks to be automatically blocked. It is not
possible to open the doors with the door handle either from the inside or from the
outside. This acts as an effective deterrent for attemp ts to break into your vehicle.
If you lock the vehicle with a key or a remo te control key, you can deactivate the safe
securing system by locking two times within 2 seconds.
The warning light in the driver door will not flash if the safe securing system is deacti-
vated.
This is not the case, however, for vehicles with an anti-theft alarm system* since the
indicator light is showing that the system is active.
The safe securing system is again activated the next time the vehicle is unlocked and
locked again.
The doors can be opened from the inside if the vehicle is locked and the safe securing
system is deactivated:
the door is unlocked by actuating the door-opening lever;
The door opens upon actuating the door-opening lever again.
WARNING
If the vehicle is locked from the outsid e and the safe securing system is acti-
vated, there must not be any person and animals in the vehicle as it is then not
possible to open either a door or a window from the inside. The locked doors
make it more difficult for rescuers to get into the vehicle in an emergency -
hazard!
Note
The anti-theft alarm system* is also activated with the deactivated safe securing
system when locking the vehicle. The inte rior monitor* is however not activated.
s2rc.book Page 36 Thursd ay, April 22, 2010 10:58 AM
Unlocking and locking37
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Unlocking the vehicle using the key– Turn the key in the locking cylinder of th e driver's door to the left in the unlock
position fig. 32 .
– Pull on the door handle and open the door.
All the doors are unlocked.
The boot lid is then unlocked.
The switched on interior lights come on over the door contact.
The safe securing system is deactivated.
The windows open provided the key is held* in the unlock posi tion. On vehicles
fitted with anti-theft alarm system the wi ndow operation is only possible 45 seconds
after deactivation of the warning system.
The indicator light in the driver's door stop s flashing if the vehicle is not fitted with
an anti-theft alarm system* page 40.Note
If the vehicle is equippe d with an anti-theft alarm system*, you must insert the key into
the ignition lock and switch the ignition on within 15 seconds after unlocking the door
in order to deactivate the anti-theft alarm system. The alarm will be triggered if you
do not switch on the ignition within 15 seconds.
Locking the vehicle with the key– Turn the key in the locking cylinder of the driver's door to the right in the lock posi-
tion fig. 32 .
All the doors and the boot lid are locked.
The switched on interior lights will switch off over the door contact.
The windows and the electric sliding/ti lting roof* close provided the key is held in
the lock position.
The safe securing system is activated immediately.
The indicator light in the dr iver door begins flashing.Note
The opened driver door cannot be locked. It must be locked separately after closing
it.Button for the central locking systemIf the vehicle is not locked from outside, you can unlock an d lock the vehicle with the
button in the driver door.Locking all doors and the boot lid– Press button fig. 33 . The symbol
in the button comes on.
Fig. 32 Turning the key for
unlocking and locking the
vehicle
AA
AB
Fig. 33 Button for the central
locking system
A1
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