66Controls and displays
Engine electronics control (petrol engines)⇒ page 71
Particulate filter (diesel engines)⇒ page 71
Fuel reserve⇒ page 71
Airbag system⇒ page 72
Tyre pressure⇒ page 72
Liquid level in the window washer system⇒ page 73
Turn signals (left/right)⇒ page 73
Fog lights⇒ page 73
Cruise speed⇒ page 73
Selector lever lock⇒ page 73
Main beams⇒ page 73
WARNING
● Failure to observe control lamps and warning messages can result in
serious personal injuries or damage to your vehicle.
● The engine compartment is a dangerous area! Carrying out work in
the engine compartment, i.e. checking and filling service liquids, can
lead to injury, scalding, burns and fires. Therefore the corresponding
warnings must always be observed ⇒ page 173, Engine compartment.
Handbrake
If the
warning lamp lights up, the handbrake is applied. Additionally,
driving the vehicle at speeds exceeding 6 km/h (4 mph) for at least 3 sec-
onds produces an audible warning.
The informative display indicates:
Release the handbrake!
Brake system
The warning lamp lights up if the brake fluid level falls too low or if there
is a fault in the ABS system.
The informative display indicates:
Brake fluid Instruction Manual!
Stop the vehicle, switch off the engine and check the level of the brake fluid
⇒ page 181
WARNING
● If the vehicle has to be stopped for technical reasons, park it a safe
distance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98.
● The following indications must be taken into account when opening
the engine compartment to check the brake fluid ⇒ page 173, Engine
compartment.
67
Controls and displays
WARNING (Continued)
● If the warning lamp lights up together with the warning lamp
⇒ page 70, Anti-lock system (ABS) , , Stop the vehicle! Seek pro-
fessional help.
● A fault in the brake system or in the Anti-lock brake system (ABS) can
lead to longer braking distances – Risk of accident!
Fastening seat belts
After switching on the ignition, the warning lamp lights up to instruct the
driver or front passenger to fasten their seat belt. The warning lamp switch-
ed off when the driver or front passenger fastens their seat belt.
While driving at a speed in excess of 20 km/h (12 mph), and if the driver or
front passenger does not have their seat belt fastened an audible warning
is given and the control lamp lights up.
If the driver or front passenger does not fasten their seat belt during the fol-
lowing 90 seconds the audible warning switches off while the warning lamp
will remain up.
Alternator
If the control lamp is lit up while the engine is running, the battery is not
charging.
Seek professional help. Have the car's electrical equipment inspected.
WARNING
If the vehicle has to be stopped for technical reasons, park it a safe dis-
tance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98, Hazard warning light switch.
CAUTION
Additionally, if the warning lamp lights up while driving, the warning
lamp also lights up (cooling system fault). Stop the vehicle and switch off
the engine – Risk of engine damage!
Door open
If the control lamp, lights up, one of the doors, the rear lid or the bonnet
is open.
WARNING
If the vehicle has to be stopped for technical reasons, park it a safe dis-
tance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98.
Engine oil
The control lamp
flashes red (oil pressure low)
The informative display indicates:
Oil pressure. Switch off the engine! Instruction Manual!
Stop the vehicle, switch off the engine and check the engine oil level
⇒ page 177
Safety FirstOperating instructionsPractical TipsTechnical specifications
68Controls and displays
If the symbol flashes although the oil level is correct, do not drive on. Do
not even run the engine at idle speed!
Seek professional help.
The control lamp lights up yellow (insufficient oil level)
The informative display indicates:
Check the oil level!
Stop the vehicle, switch off the engine and check the engine oil level
⇒ page 177
If the bonnet remains open for more than 30 seconds, the warning lamp
switches off. If the engine oil is not refilled, the warning lamp lights up
again after 100 km (62 miles).
The control lamp flashes yellow (oil level sensor faulty)
The informative display indicates:
Oil sensor. Workshop!
If the engine oil level sensor is faulty, The warning lamp flashes various
times after the ignition is switched on and an audible warning is given.
Seek professional help.
WARNING
If the vehicle has to be stopped for technical reasons, park it a safe dis-
tance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98.
Coolant level and temperature
If the warning lamp (blue) is lit up, the engine has not yet reached its op-
erating temperature 1)
. Avoid high engine speeds, hard acceleration and
submitting the engine to high loads.
If the warning lamp (red) is lit up or flashing, the coolant temperature is
too high or its level is too low.
The informative display indicates:
Check coolant! Instruction Manual!
Stop the vehicle, switch off the engine, check the coolant level ⇒ page 179
and refill if necessary ⇒ page 180.
If the coolant is situated in the prescribed area, the high temperature may
be due to a fault in the cooling system fan. Check the radiator fan fuse and
replace it if necessary ⇒ page 214, Changing fuses in the engine compart-
ment.
If the warning lamp (red) remains lit up, despite both the coolant level
and the radiator fan fuse being in correct condition, stop the vehicle!
Seek professional help.
1)
This does not apply to vehicles equipped with an informative display.
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Controls and displays
WARNING
● If the vehicle has to be stopped for technical reasons, park it a safe
distance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98.
● Take care when opening the coolant reservoir. When the engine is
warm or hot, the system is pressurised – Danger of burns! Wait for the
engine to cool before opening the cover.
● Do not touch the fan. The fan can switch on automatically regardless
of whether the ignition is switched on.
Power steering
If the warning lamp, is lit up there is a fault in the power steering.
The power steering system functions with reduced power steering effect.
Seek professional help.
Stability Control (ESC)
If the control lamp flashes, the ESC is working.
If the warning lamp lights up on ignition the ESC system may have
switched off due to technical reasons. Turn off the ignition and turn it on
again. Upon switching on the ignition again, if the warning lamp has switch-
ed off, this means the ESC is functioning correctly again.
If the warning lamp, is lit up there is a fault in the ESC.
The informative display indicates: Report No.: Stability control (ESC) or
Report No.: Traction control system (ASR)
Seek professional help.
Further information ⇒ page 141, Stability system (ESC).
Note
If the battery is disconnected and connected again, the yellow warning
lamp lights up when the ignition is switched on. This warning lamp must
switch off after covering a short distance.
Traction control system (ASR)
If the control lamp flashes, the ASR is working.
If the warning lamp lights up on ignition the ASR system may have
switched off due to technical reasons. Turn off the ignition and turn it on
again. Upon switching on the ignition again, if the warning lamp has switch-
ed off, this means the ASR is functioning correctly again.
If the warning lamp, remains lit up there is a fault in the ASR.
The informative display indicates: Report No.: Traction control system (ASR)
Seek professional help.
Further information ⇒ page 142, Traction control system (ASR).
Safety FirstOperating instructionsPractical TipsTechnical specifications
70Controls and displays
Anti-lock system (ABS)
If the warning lamp, is lit up there is a fault in the ABS.
The informative display indicates: ABS fault
The brake system alone is operational in the vehicle, without ABS.
Seek professional help.
WARNING
● If the vehicle has to be stopped for technical reasons, park it a safe
distance away from moving traffic, switch off the engine and turn on the
hazard warning lights ⇒ page 98.
● If the warning lamp ⇒ page 66 lights up together with the warning
lamp , , Stop the vehicle! Seek professional help.
● A fault in the Anti-lock brake system (ABS) can lead to longer braking
distances – Risk of accident!
Rear fog light
The control lamp lights up when the rear fog light is switched on
⇒ page 96. Bulb fault
The control lamp lights up when there is a fault in a bulb:
● For several seconds after switching on the ignition
● When connecting a faulty bulb
This is indicated on the informative display, e.g.: Check the front right dipped beam headlight!
Note
The rear side lights and number plate light contain several bulbs. The con-
trol lamp lights up only when there is a fault in all the number plate
bulbs or side light bulbs (of a combined tail light). Therefore it is advisable
to regularly check the bulb operation.
Emission control system
If the warning lamp is lit up, there is a fault in the emission system. The
engine control unit allows driving to continue in an emergency program.
Seek professional help.
Preheating (diesel engines)
When you switch on the ignition, the warning lamp lights up. The engine
can be started straight away when the lamp switches off.
If the warning lamp does not light up or if it does not switch off , there is
a fault in the glow plug system.
71
Controls and displays
If the warning lamp starts to flash while driving, there is a fault in the
engine power control electronic system. The engine control unit allows driv-
ing to continue in an emergency program.
Seek professional help.
Engine management (diesel engines)
If the warning lamp is lit up, there is a fault in the engine management
system. The engine control unit allows driving to continue in an emergency
program.
Seek professional help.
Particulate filter (diesel engines)
The particulate filter eliminates soot from emissions. The particles accumu-
late in the filter where they are normally burned off.
If the warning lamp is lit up, the filter is obstructed by soot.
In order for the filter to clean itself (if the traffic conditions ⇒
so permit) it
is essential to drive for at least 15 minutes (or until the warning lamp
switches off) with 4th or 5th gear engaged (automatic gearbox: position S)
at a minimum speed of 60 km/h (37 mph) with the engine speed between
1800-2500 1/min.
The warning lamp switches off once the filter has been successfully
cleaned.
If the cleaning process is not successful, the warning lamp does not
switch off and the warning lamp starts to flash.
The informative display indicates: Diesel particulate filter. Instruction Manual!
The engine control unit allows driving to continue in an emergency program.
When switching the ignition off and on again, the warning lamp also
lights up.
Seek professional help.
WARNING
● The particulate filter attains very high temperatures. Therefore, do
not park the vehicle in places where the exhaust pipe could come into
contact with dry grass or with highly-flammable materials. Risk of fire!
● Always adjust your speed to suit the weather, road, terrain and traffic
conditions. Never be encouraged, by the recommendations shown in the
warning lamps, to fail to respect traffic legislation.
CAUTION
While the warning lamp is lit up, the fuel consumption is high, and in
certain conditions, the engine power is reduced.
Note
● In order for the particulate filter to burn off soot in a correct manner,
avoid carrying out frequent short journeys.
● Using diesel fuel with a high sulphur count can considerably reduce the
useful life of the particulate filter. The specialised service provides informa-
tion about the countries where fuel with a high sulphur content is used.
Fuel reserve
The warning lamp lights up when approximately only 7 litres of fuel re-
main in the tank.
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72Controls and displays
The informative display indicates: Refuel! Fuel range…km...(miles)
Note
The message on the display switches off only after refuelling and carrying
out a short journey.
Airbag system
If the warning lamp is lit up, there is a fault in the airbag system.
The informative display indicates: Airbag fault!
The airbag system availability is controlled electronically, regardless of
whether an airbag is disabled.
If the front airbag, side airbag, head protection airbag or the belt tensioner
are disabled using the diagnostics system:
● After switching on the ignition, the warning lamp lights up for around
4 seconds and flashes for another 12 seconds.
The informative display indicates:
Airbag/belt tensioner disabled! If the front passenger airbag has been disabled with the airbag switch loca-
ted in the storage compartment side:
●
When the ignition is turned on, the warning light switches on for
around 4 seconds.
● The airbag is disabled, signalled with the warning lamp which
lights up with the word placed in the centre part of the
dash panel ⇒ Fig. 24 ⇒ page 44.
WARNING
When there is a fault in the airbag system, have an inspection carried out
by an Authorised Service. Otherwise the airbags may fail to trigger in an
accident.
Tyre pressure monitoring
If the warning lamp lights up, the pressure of a tyre has decreased signif-
icantly. Check and adjust the pressure of all the tyres ⇒ page 187.
If the warning lamp flashes, there is a fault in the system.
Seek professional help.
Further information ⇒ page 192, Tyre pressure.
Note
If the battery is disconnected the warning lamp lights up when the igni-
tion is switched on. This warning lamp must switch off after covering a short
distance.
73
Controls and displays
Windscreen washer fluid level
If the warning lamp lights up, the level of windscreen washer fluid in the
tank is very low. Fill the windscreen washer fluid ⇒ page 182, Windscreen
washer.
The informative display indicates:
Refill windscreen washer fluid!
Turn signals
Depending on the position of the turn signal lever the left warning lamp on
the left or right flashes.
If there is a turn signal fault the warning lamp flashes at approximately dou-
ble speed.
All the turn signals flash in addition to both warning lamps when the hazard
warning lights are switched on.
Further information ⇒ page 97, Turn signal and main beam lever.
Fog lights
The control lamp lights up when the fog lights are switched on
⇒ page 95. Cruise speed
The warning lamp
lights up when the cruise control is switched on
(cruise speed) ⇒ page 149.
Selector lever lock
If the control lamp lights up, press the brake pedal. This is necessary
when you require the automatic gearbox selector lever to move out of the
positions P or N ⇒ page 146.
Mean beams
The warning lamp lights up with the main beam headlights or when the
headlights are flashed ⇒ page 97.
Safety FirstOperating instructionsPractical TipsTechnical specifications