
70Cockpit
Note
● If the glow plug indicator lamp should start flashing while the vehicle is
moving, this indicates a fault in the engine management system. The en-
gine should be serviced without delay.
● If the indicator lamp fails to light up when the ignition is switched on,
this can mean that the glow plug system is defective. The engine should be
serviced.
Brake system
The warning lamp flashes when the handbrake is applied, or
if the brake fluid level is too low or if there is a fault in the
ABS system. If the warning lamp flashes (and the handbrake is not applied), stop the
vehicle and check the brake fluid level ⇒
⇒ page 230.
If a failure should occur in the ABS, the ABS warning lamp will light up
together with the brake warning lamp ⇒
.
Handbrake on
The warning lamp also lights up when the handbrake is applied. In addi-
tion to this, the handbrake warning ⇒ page 76 switches on after driving
for 3 seconds at a speed above 5 km/h.
WARNING
● Before opening the bonnet and checking the brake fluid level, ob-
serve the warning information in ⇒ page 221, Work in the engine com-
partment.
● If the brake warning lamp does not go out, or if it lights up when driv-
ing, the brake fluid level in the reservoir is too low and this may cause an
increased accident risk. Stop the vehicle and do not drive on. Obtain
technical assistance.
● If the brake warning lamp lights up together with the ABS warning
lamp, this can mean that there is a fault in the ABS control function. As a
result, the rear wheels can lock relatively easily when braking. Under cer-
tain circumstances, the rear of the vehicle could suddenly sway from side
to side, with the subsequent danger of skidding. Drive carefully to the
nearest specialised workshop and have the fault repaired.

71
Cockpit
Driver information system
General notes
The driver information system in the instrument panel
shows the status of various on-board systems at a glance.
Fig. 47 Cockpit: Digital
instrument panel display
The display for the driver information system is in the centre of the instru-
ment panel.
The system runs a check on certain components and functions when the ig-
nition is switched on and while the vehicle is moving. The DIS system gives
an audible warning if a fault should occur or if servicing is required, and a
red or yellow warning symbol (in some cases with a corresponding driver
message) appears in the instrument panel display.
The driver is informed on the audio system.
The driver information system includes the following functions:
CD player, radio and telephone display*⇒ page 72Outside temperature display⇒ page 72Gear indicator*⇒ page 73Selector lever positions for the 7-speed automatic
gearbox*⇒ page 182
Selector lever positions with multitronic ®
*⇒ page 178Distance to empty⇒ page 73Door and tailgate warning⇒ page 74Service indicator⇒ page 74auto-check control⇒ page 75Driving tips⇒ page 76Handbrake warning⇒ page 76Bulb monitor*⇒ page 82Onboard computer*⇒ page 85Tyre pressure monitoring*⇒ page 89Navigation information*Separate Instruc-
tion Manual
Note
● If a fault should occur, the display will show a red or yellow warning
symbol. A red warning symbol indicates a serious malfunction ⇒ page 77.
A yellow warning symbol indicates a less serious malfunction ⇒ page 79.
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76Cockpit
The red symbol indicates danger, whereas the yellow one represents a
warning. Additional messages for the driver may be shown with the red or
yellow symbols.
Driver messages
Additional messages for the driver are displayed together
with the warning symbols on the instrument panel.
Fig. 53 Instrument pan-
el: CHECK button
Driver messages and red symbols
If a red warning symbol appears on the display, you can press the CHECK
button ⇒ fig. 53 to call up an additional driver message.
For example: in the event of an oil pressure malfunction, the oil pressure
symbol
will appear in the display. If you now press the CHECK
button,
the following message will appear in the display:
Switch off engine, check oil level The message will disappear from the display after about 5 seconds. If re-
quired, the message can be called up again by briefly pressing the
CHECK
button.
Driver messages and yellow symbols
If a yellow warning symbol appears in the display, it will automatically be
accompanied by the corresponding driver message.
For example, the symbol
is displayed to indicate that the windscreen
washer fluid level is low. In addition, the following message will appear:
Top up washer fluid
The message will disappear after a few seconds. If required, the message
can be called up again by briefly pressing the CHECK
button.
Note
● The messages handbrake on and when stationary apply footbrake to se-
lect gear cannot be called up a second time. They will remain in the display
until the handbrake is released or until a gear is selected.
Handbrake warning
– Release the handbrake.
If you drive by mistake with the handbrake still applied, you will hear a
warning buzzer and the display will show the message: Handbrake on
The handbrake warning switches on after driving for 3 seconds at speeds
above 5 km/h.

77
Cockpit
Red symbols
A red symbol warns of a danger.
Fig. 54 Display: Coolant
level warning
– Stop the vehicle.
– Switch the engine off.
– Check the fault. Obtain professional assistance if necessary.
BRAKESFault in brake system⇒ page 77
COOLANTCoolant level too low / coolant tempera-
ture too high⇒ page 78
OIL PRES- SUREEngine oil pressure too low⇒ page 78
The red symbols are used to indicate a Priority 1 fault (serious malfunction). A red symbol is accompanied by
three warning chimes. The symbols will
keep flashing until the faults are corrected. If several Priority 1 faults are de-
tected at the same time, the symbols are displayed one after the other for
about 2 seconds.
Fault in the brake system
A fault in the brake system should be repaired as soon as
possible.
If the symbol flashes in the display, there is a fault in the brake
system. One of the following messages will appear in the display
together with the symbol:
Stop vehicle, check brake fluid and hydraulic fluid levels
Warning! Fault in brake system (ABS) Take vehicle to workshop
– Stop the vehicle.
– Check the brake fluid level ⇒ page 230.
If the ABS fails, the ABS warning lamp will light up together with the
brake system fault symbol ⇒
.
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78Cockpit
WARNING
● Before opening the bonnet and checking the brake fluid level, ob-
serve the warning information in ⇒ page 221, Work in the engine com-
partment.
● If the brake fluid level in the reservoir is too low, this could result in
an accident. Do not drive on! Obtain technical assistance.
● If the brake warning lamp lights up together with the ABS warning
lamp, this can mean that there is a fault in the ABS control function. As a
result, the rear wheels can lock relatively easily when braking. Under cer-
tain circumstances, the rear of the vehicle could suddenly sway from side
to side, with the subsequent danger of skidding. Drive carefully to the
nearest specialised workshop and have the fault repaired.
Fault in the cooling system
Faults in the cooling system must be repaired immediately.
If the symbol flashes in the display, this means that either the
coolant temperature is too high or the coolant level is too low. The
following message will appear in the display together with the
symbol:
Switch off engine and check coolant level
– Stop the vehicle.
– Switch the engine off.
– Check the coolant level ⇒ page 226.
– Add more coolant if necessary ⇒ page 227.
– Wait for the symbol to go out before driving on. –
Obtain professional assistance if necessary.
If the coolant level is correct, the overheating may be caused by a malfunc-
tion of the radiator fan.
If the alternator warning lamp lights up as well ⇒ page 69, it is possible that
the drive belt has broken.
CAUTION
Do not drive on if the symbol has come on to indicate a fault in the cool-
ing system, otherwise there is a risk of engine damage.
Engine oil pressure too low
If the engine oil pressure is too low the fault must be re-
paired immediately.
If the symbol flashes in the display, the oil pressure is too low.
The following message will appear in the display together with the
symbol:
Switch off engine, check oil level
– Stop the vehicle.
– Switch the engine off.
– Check the engine oil level ⇒ page 224.
– Obtain professional assistance if necessary.
Engine oil level too low
If the engine oil level is too low, add more oil ⇒ page 225.

79
Cockpit
Engine oil level correct
If the symbol flashes and the engine oil level is correct, obtain profes-
sional assistance. Do not drive on! Do not continue to run the engine, even
at idle speed .
Note
The oil pressure warning lamp is not an indicator for the oil level. The oil
level should therefore be checked regularly, preferably every time you fill
the tank.
Yellow symbols
A yellow symbol indicates a warning.
Fig. 55 Display: Fuel lev-
el low
Brake light failure warning light⇒ page 80
Fuel level low⇒ page 80
Engine speed governing⇒ page 80
Check engine oil level⇒ page 80
Engine oil sensor faulty*⇒ page 80
Diesel particulate filter* obstructed⇒ page 80
Photosensor/rain sensor faulty⇒ page 81
Brake pad worn⇒ page 81
Speed warning 1⇒ page 81
Dynamic headlight range control* faul-
ty⇒ page 81
Adaptive headlights* faulty⇒ page 81
Washer fluid level low*⇒ page 81
Speed warning 2*⇒ page 81
Battery voltage too high or too low*⇒ page 81
Bulb monitor*⇒ page 82
Tyre pressure monitoring system*
Loss of pressure⇒ page 89
Tyre pressure monitoring system*
System not available⇒ page 66
Yellow symbols are used to indicate a Priority 2 fault (warning).
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80Cockpit
Yellow symbols are accompanied by one warning buzzer. The function indi-
cated should be checked as soon as possible. If several Priority 2 faults are
detected at the same time, the symbols are displayed one after the other for
about 2 seconds at a time.
Brake light failure
This warning light will appear on the upper part of the display if any of the
brake lights has failed. A text message in the central part of the display indi-
cates which brake light has failed (left or right).
Fuel level low
When this symbol comes on for the first time, there are about 8 to 10 li-
tres of fuel left in the tank. You should fill up as soon as possible
⇒ page 217.
Engine speed governing
Max. engine speed XXXX rpm
There is a fault in the engine management. In addition, the warning lamp
on the instrument panel will light up. The engine speed will be governed to
the speed displayed in the driver information system. Please ensure that
the engine speed does not exceed the speed shown (for example, when
changing down a gear).
Take the vehicle to a qualified workshop immediately to have the fault re-
paired. Checking the engine oil level
If the symbol lights up, please check the engine oil level as soon as pos-
sible ⇒ page 224. Top up the oil at the next opportunity ⇒ page 225.
Engine oil sensor defective*
If the symbol lights up, take the vehicle to a qualified workshop and
have the oil level sensor checked. Until then it is advisable to check the oil
level every time you fill up with fuel ⇒ page 224.
Diesel particulate filter obstructed
If the symbol lights up, you can contribute towards automatic filter
cleaning by driving in the right manner. To do this, drive about 15 minutes
in 4th or 5th gear (automatic gearbox: S gear range) at a speed of 60 km/h,
with the engine running at approximately 2000 rpm. The increase in temper-
ature will burn off any soot in the filter. When cleaning is successful, the
symbol switches off.
If the symbol does not turn off, or the three lamps turn on (particulate
filter , emission control system fault and heaters ), take the vehicle
to a qualified workshop to repair the fault.
For further information on the diesel particulate filter, see ⇒ page 193.
WARNING
It is essential that you adjust your speed to suit the weather, road, ter-
rain and traffic conditions. The recommended driving speed must never
lead to the driver disregarding the traffic regulations.

81
Cockpit
Photosensor/rain sensor faulty
Automatic headlights / automatic wipers faulty
If the symbol lights up, this means that the photosensor/rain sensor is
not working. For safety reasons, the dipped beam headlights will then be
switched on permanently when the light switch is set to the AUTO position.
However, you can still switch the lights on and off in the normal way with
the light switch. If the rain sensor is faulty, the functions operated via the
windscreen wiper lever will still be available. You should have the photosen-
sor/rain sensor checked by a specialised workshop as soon as possible.
Worn brake pads
If the symbol lights up, have the front brake pads (and, for safety rea-
sons, the rear pads as well) inspected by a specialised workshop.
Speed warning 1
If the symbol lights up, this means you are exceeding the speed that has
been pre-set with the speed warning function. You should reduce your
speed accordingly ⇒ page 82.
Headlight range control faulty
This symbol indicates a malfunction in the dynamic headlight range con-
trol. Take the vehicle to a qualified workshop to have the dynamic headlight
range control function repaired. Adaptive headlights* faulty
Adaptive headlights faulty
This symbol indicates that the adaptive headlight system is faulty. Take
the vehicle to a qualified workshop to have the headlights or the adaptive
headlight control unit repaired.
Washer fluid level low
If the symbol lights up, top up the fluid for the windscreen washer and
headlight washer system* ⇒ page 228.
Speed warning 2
If the symbol lights up, this means you are exceeding the speed that has
been pre-set. You should reduce your speed accordingly ⇒ page 82.
Battery voltage too high or too low
If the symbol lights up, take the vehicle to a qualified workshop and
have the following items checked:
● Poly V-belt
● Battery condition
It is also advisable to check whether the alternator warning lamp has come
on ⇒ page 69.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications