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Warning lamps Overview of the warning lamps
The control lamps indicate a number of different functions and possible faults.
Fig. 38 Instrument panel warning and control lamps.
Some of the items of equipment listed here are fitted
only on certain model versions or are optional extras.
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ItemSymbolMeaning of control and warning
lampsFurther infor-mation
1Engine fault (petrol engine)⇒ page 68
1
Glow plug system for diesel engine
If lit: glow plug system active
If flashing: engine fault⇒ page 68
2Soot accumulation in the diesel en-
gine particulate filter⇒ page 68
3
Red:
Engine oil pressure
⇒ page 69Yellow:
If flashing: engine oil sensor faulty
If it remains lit: insufficient engine
oil
4Bulb defective⇒ page 69
5Level of liquid for washing windows
too low.⇒ page 69
6Rear fog light switched on⇒ page 69
7Seat belt warning lamp*⇒ page 18
8Anti-lock brake system (ABS) *⇒ page 69
9
If flashing: the Electronic Stability
Control (ESC) is working or the ASR
is working
If it remains lit: ESC or ASR faulty⇒ page 70
⇒ page 71
10Brake fluid required or
serious fault in brake system⇒ page 71
11Handbrake on⇒ page 154
ItemSymbolMeaning of control and warning
lampsFurther infor-mation
12Cruise speed activated (Cruise con-
trol)⇒ page 71
13Tyre pressure*⇒ page 71
14Selector lever lock (automatic gear-
box)⇒ page 73
15Fuel level / reserve⇒ page 73
16Doors open⇒ page 73
17Rear lid open⇒ page 73
18Airbag or belt tensioner system fault
or airbag disabled⇒ page 30
19Main beam switched on⇒ page 73
20Start-Stop system switched off⇒ page 143
21Electro-hydraulic steering⇒ page 73
22Fault in the emission control system⇒ page 74
23Coolant level / coolant temperature⇒ page 74
24Alternator fault⇒ page 74
25If it stays lit: ASR switched off⇒ page 70
⇒ page 71
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ItemSymbolMeaning of control and warning
lampsFurther infor-mation
Turn signals in operation⇒ page 75
SAFEElectronic immobiliser⇒ page 75
⇒ page 80
WARNING
● Failure to observe control lamps and warning messages can result in
serious personal injuries or damage to your vehicle.
● The risk of an accident increases if your vehicle breaks down. Use a
warning triangle to draw the attention of other road users in order to pre-
vent danger to third parties.
● The engine compartment is a dangerous area! Before you open the
bonnet to work on the engine or in the engine compartment, you must
switch the engine off and allow it to cool to reduce the risk of scalding or
other injuries. Read and observe the relevant warnings ⇒ page 193.
Note
● The appropriate control lamp for a fault will light up in vehicles without
warning or information messages in the display.
● In vehicles with warning or information texts on the screen, the appro-
priate control lamp for a fault will light up and a warning or information
message will also appear on the screen.
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Overview of indicator and warning lamps (vehicles with
LPG)
The control lamps indicate a number of different functions
and possible faults.
Fig. 39 Instrument panel control and warning lamps in vehicles with LPG.
ItemSymbolMeaning of control and warning lampsFurther infor-
mation
1Green: LPG system connected⇒ page 142
2Yellow: Gas reserve warning light⇒ page 56
WARNING
● Failure to observe control lamps and warning messages can result in
serious personal injury or damage to your vehicle.
● The risk of an accident increases if your vehicle breaks down. Use a
warning triangle to draw the attention of other road users in order to pre-
vent danger to third parties.
● The engine compartment is a dangerous area! Before you open the
bonnet to work on the engine or in the engine compartment, you must
switch the engine off and allow it to cool to reduce the risk of scalding or
other injuries. Read and observe the relevant warnings ⇒ page 193.
Note
● The appropriate control lamp for a fault will light up in vehicles without
warning or information messages in the display.
● In vehicles with warning or information texts on the screen, the appro-
priate control lamp for a fault will light up and a warning or information
message will also appear on the screen.
Warning symbols
There are red warning symbols (priority 1) and yellow warning sym-
bols (priority 2) Warning messages, Priority 1 (red)
If one of these faults occurs, the warning lamp will flash or light up and will
be accompanied by three audible warnings. This is a danger warning. Stop
the vehicle and switch off the engine. Check the fault and correct it. Obtain
professional assistance if necessary.
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If several priority 1 faults are detected at the same time, the symbols will be
displayed one after the other for about 2 seconds at a time and will contin-
ue until the fault is corrected.
No menus will be shown in the display for the duration of a priority 1 warn-
ing message.
Examples of priority 1 warning messages (red)
● Brake system symbol with the warning message STOP BRAKE FLUID
INSTRUCTION MANUAL or STOP BRAKE FAULT INSTRUCTION MANUAL .
● Coolant symbol with the warning message STOP SEE COOLANT IN-
STRUCTION MANUAL.
● Engine oil pressure symbol with the warning message STOP ENGINE
OIL PRESSURE LOW! INSTRUCTION MANUAL .
Warning messages, Priority 2 (yellow)
If one of these faults occurs, the warning lamp lights up, and is accompa-
nied by one audible warning. Check the corresponding function as soon as
possible although the vehicle may be used without risk.
If several priority 2 warning messages are detected at the same time, the
symbols are displayed one after the other for about 2 seconds at a time. Af-
ter a set time, the information text will disappear and the symbol will be
shown as a reminder at the side of the display.
Priority 2 warning messages will not be shown until all Priority 1 warning
messages have been dealt with!
Examples of priority 2 warning messages (yellow): 1)
● Fuel warning light with the information text PLEASE REFUEL. Information messages displayed on the screen*
Message
a)Description
SERVICEThe service interval has ended. Take the vehicle to a Techni-
cal Service.
IMMOBILIS-
ERImmobiliser system active. The vehicle will not start. Take
the vehicle to a Technical Service.
ERRORInstrument panel faulty. Take the vehicle to a Technical Serv-
ice.
CLEAN AIRFILTERWarning: Clean the air filter.
NO KEYWarning: Correct key cannot be found in the vehicle.KEY BATTERYWarning: Key battery low. Change the battery.
CLUTCHWarning: Press the clutch to start. In vehicles with manual
gearbox and Start/Stop system.
--> P/NWarning: Place the selector level in P/N to start. Only in ve-
hicles with automatic gearbox.
--> PWarning: Place the selector lever in position P to stop the
engine.
STARTINGWarning: The engine starts automatically. Start-Stop system
activated.
START MAN- UALLYWarning: The engine must be started manually. Start-Stop
system activated.
ERROR
START STOPWarning: Start-Stop system error.
START-STOP
IMPOSSIBLEWarning: Although the Start-Stop system is switched on, the
engine cannot be stopped automatically. Not all the neces-
sary conditions are met.
START-STOP ACTIVEWarning: Start-Stop system activated. Vehicle in Stop mode.
1)
Depending on the version of the model.
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SWITCH OFFWarning: Start-Stop system activated. Switch off the ignition
when you leave the vehicle.
STOP TRANS-
MISSIONTOO HOTWarning: Stop the engine. Gearbox overheated.
BRAKEWarning: To start the engine, press the brake pedal. Only in
vehicles with automatic gearbox.
COASTING FUNCTIONWarning: Coasting mode active. Transmission engaged. On-
ly in vehicles with automatic gearbox.
CHECK SAFE- LOCKNotification of central locking function activated.
a)These messages may vary according the version of the vehicle model.
Engine management*
This warning lamp monitors the engine management sys-
tem for petrol engines.
The warning lamp (Electronic Power Control) lights up when the ignition
is switched on to show that the lamp is working properly. It should go out
once the engine is started.
If there is a fault in the electronic engine management system while you are
driving, this warning lamp will light up. Stop the vehicle and seek technical
assistance. Glow plug system/Engine fault*
The warning lamp lights up to show that the glow plugs are
preheating the diesel engine. It flashes if there is an engine
fault.
Control lamp is lit
The control lamp lights up while the glow plug system is preheating.
When the warning lamp goes off, the engine should be started straight
away.
Control lamp flashes
If a fault develops in the engine management system while you are driving,
the glow plug system lamp will flash . Take the vehicle to a specialised
workshop as soon as possible and have the engine checked.
Soot accumulation in the diesel engine particulate filter*
If the lamp lights up you should help the filter clean itself by driving in
the appropriate manner.
To do this, drive about 15 minutes in fourth or fifth gear (automatic gear-
box: S gear range) at a speed of 60 km/h (40 mph), with the engine running
at approximately 2000 rpm. In this way, the pollen build up in the filter is
burned. When cleaning is successful, the lamp turns off.
If the lamp does not turn off, or the three lamps turn on (particulate filter
, emission control system fault and glow plugs ), take the vehicle to
a specialised workshop to repair the fault.
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WARNING
● Always drive according to the road weather conditions, the terrain
and traffic. Driving recommendations should never lead to illegal ma-
noeuvres in surrounding traffic.
● The diesel engine particulate filter may reach extremely high temper-
atures; it should not enter into contact with flammable materials under-
neath the vehicle. Otherwise there is a risk of fire.
Engine oil pressure
If this warning lamp is red it indicates that the engine oil
pressure is too low.
If this warning symbol starts to flash, and is accompanied by three audible
warnings, switch off the engine and check the oil level. If necessary, add
more oil ⇒ page 199.
If the symbol flashes although the oil level is correct, do not drive on. Do
not even run the engine at idle speed! Obtain technical assistance.
Checking the oil level
If the warning lamp is yellow the engine oil level should be checked as
soon as possible. Top up the oil ⇒ page 199 at the next opportunity.
Oil level sensor faulty*
If the yellow warning lamp flashes, take the vehicle to a specialised
workshop to have the oil level sensor checked. Until then it is advisable to
check the oil level every time you refuel. Bulb defect*
The indicator lights up when a bulb is not functioning.
The warning lamp lights up when there is a fault on the turn signals,
headlights, side lights and fog lights.
Washer fluid
This warning lamp lights up to indicate that the windscreen
washer level is too low. This serves as a reminder to fill up the reservoir at the earliest opportunity
⇒ page 202.
Rear fog light*
This warning lamp lights up when the rear fog light is switched on . For
further information see ⇒ page 97.
Anti-lock brake system (ABS)*
A control lamp monitors the ABS.
The control lamp should light up for a few seconds when the ignition is
switched on. It goes out again after the system has run through an automat-
ic test sequence.
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There is a fault in the ABS if:
● The control lamp does not light up when the ignition is switched on.
● The control lamp does not go out again after a few seconds
● The control lamp lights up when the vehicle is moving
The vehicle can still be braked in the normal way, without the ABS function.
Take the vehicle to a specialised workshop as soon as possible. For further
information on the ABS go to ⇒ page 163.
If there is a fault in the ABS, the ESC* and the tyre pressure control lamp will
also light up.
Brake system fault
If the ABS warning lamp lights up together with the brake warning lamp
, this indicates not only a fault in the ABS function, but also a possible
fault in the brake system ⇒
.
WARNING
● Before opening the bonnet, read and observe the warnings on
⇒ page 193, Working in the engine compartment.
● If the brake system warning lamp should light up together with the
ABS warning lamp , stop the vehicle immediately and check the brake
fluid level in the reservoir ⇒ page 206, Brake fluid. If the brake fluid lev-
el has dropped below the “MIN” mark you must not drive on. Risk of acci-
dent. Obtain technical assistance.
● If the brake fluid level is correct, the fault in the brake system may
have been caused by a failure of the ABS system. This could cause the
rear wheels to lock quickly when you brake. This could cause the rear to
break away. Risk of skidding. Stop the vehicle and seek technical assis-
tance.
Differential lock fault (EDL)*
The EDL operates along with the ABS in vehicles equipped
with the Electronic Stability Control (ESC)*
A malfunction in the EDL is indicated by the ABS control lamp . Take the
vehicle to a specialised workshop as soon as possible. For further informa-
tion on the EDL see ⇒ page 165, Electronic differential lock (EDL)*.
Traction control system (ASR)* /
The traction control system prevents the driven wheels from
spinning when the vehicle is accelerating
There are two warning lamps for the traction control system: and . Both
warning lamps light up together when the ignition is switched on and
should turn off after approximately 2 seconds. This is the time taken for the
function check.
The lamp has the following function:
● It flashes when the ASR is working if the vehicle is moving.
If the system is deactivated or if it has any fault, the warning lamp will re-
main lit. The warning lamp will also light up if a fault should occur in the
ABS because the ASR operates in conjunction with the ABS. For further in-
formation, see ⇒ page 162, Brakes
The lamp provides information about the disconnection status of the
system:
● It stays lit when the ASR is disconnected when pressing the switch.
By pressing it again, the ASR function is reactivated and the warning lamp
switched off.