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Instruments and controls89
If the control indicator does not go outafter a few seconds, or if it illuminates while driving, there is a fault in the
ABS. The brake system remains
operational but without ABS
regulation.
Antilock Brake System 3 138.
Upshift
[ illuminates green when upshifting
is recommended for fuel saving
reasons.
Sport mode1 illuminates yellow.
The symbol is illuminated when Sport
mode is on 3 131, 3 135.
Winter mode T illuminates yellow.
The symbol is illuminated when
Winter mode is on 3 131, 3 135.
Ultrasonic parking assist
r illuminates or flashes yellow.Illuminates
Fault in system. Have the cause of the
fault remedied by a workshop.
Flashes
Fault due to sensors that are dirty or
covered by ice or snow.
or
Interference due to external sources of ultrasound. Once the source of
interference is removed, the system
will operate normally.
Ultrasonic parking sensors 3 142.
Electronic Stability
Program v flashes or illuminates yellow.
Illuminates for a few seconds when
the ignition is switched on.
Flashes whilst driving
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree
3 139.Illuminates whilst driving
The system is switched off or a fault
is present. Continued driving is
possible. Driving stability, however,
may deteriorate depending on road
surface conditions.
Have the cause of the fault remedied
by a workshop.
ESP® Plus
3 139.
Engine coolant
temperature W illuminates red.
Illuminates when the engine is running
Stop, switch off engine.Caution
Coolant temperature too high.
Check coolant level. 3 154.
If there is sufficient coolant, consult a workshop.
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90Instruments and controlsPreheating and diesel
particle filter ! illuminates or flashes yellow.
Illuminates Preheating activated. Only activates
when outside temperature is low.
Flashes Control indicator ! flashes if the
diesel particle filter requires cleaning
and previous driving conditions did
not permit automatic cleaning.
Continue driving and if possible do
not allow engine speed to drop below
2000 rpm.
The control indicator ! goes off as
soon as the self-cleaning operation is complete.
Diesel particle filter 3 127.
Deflation detection system
and tyre pressure
monitoring system
w illuminates or flashes red or yellow.Control indicator illuminates red
Tyre pressure loss. Stop immediately
and check tyre pressure. A maximum speed of 50 mph is permitted for run-
flat tyres 3 172.
Control indicator illuminates
yellow
Fault in system or tyre without
pressure sensor mounted (e.g. spare
wheel). Consult a workshop.
Flashes
Flashes three times to indicate system initialisation.
Deflation detection system 3 175,
tyre pressure monitoring system
3 174.
Interactive driving system, continuous damping
control, sport mode IDS+ illuminates yellow.
Illuminates for approximately
10 seconds after the driver's door is
opened. Illumination whilst drivingindicates a fault in the system. The
system switches to the harder chassis setting for reasons of safety. Have the
cause of the fault remedied by a workshop.
IDS Plus
3 140, Continuous damping
control 3 141, Sport mode 3 140.
Engine oil pressure I illuminates red.
Illuminates when the ignition is
switched on and goes out shortly after
the engine starts.
Illuminates when the engine isrunningCaution
Engine lubrication may be
interrupted. This may result in
damage to the engine and/or
locking of the drive wheels.
1. Depress clutch.
2. Select neutral gear, set selector lever to N.
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Instruments and controls91
3. Move out of the flow of traffic asquickly as possible without
impeding other vehicles.
4. Switch off ignition.9 Warning
When the engine is off,
considerably more force is needed
to brake and steer.
Do not remove key until vehicle is stationary, otherwise the steering
wheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 153.
Low engine oil level
S illuminates yellow.
Engine oil level is checked
automatically.
Illuminates when the engine is
running
Low engine oil level. Check engine oil
level and top up as necessary
3 153.
Low fuel Y illuminates or flashes yellow.
Illuminates Level in fuel tank too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 128.
Bleeding the diesel fuel system
3 157.
Open&Start system
0 illuminates or flashes yellow.
Flashes The electronic key is no more within
the reception range of the vehicle interior. The engine cannot bestarted. Hold the Start/Stop button
depressed a bit longer to switch off
the ignition.
or
Failure of the electronic key.
Operation is yet only possible via
emergency operation.
Illuminates
Fault in system. Try to operate with
the spare key, the remote control or
through emergency operation. Hold
the Start/Stop button depressed a bit
longer to switch off the ignition. Seek the assistance of a workshop.
or
The steering wheel lock is still
engaged. Move the steering wheel
slightly and press the Start/Stop
button.
Open&Start system 3 28.
Apply footbrake
j illuminates yellow.
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92Instruments and controls
The engine with manual transmission
automated can only be started if the
foot brake is depressed. If the foot
brake is not depressed, the control
indicator illuminates 3 134.
Exterior light 8 illuminates green.
Illuminates when the exterior lights
are on 3 108.
High beam C illuminates blue.
Illuminates when high beam is on and
during headlamp flash 3 109.
Adaptive forward lighting
B illuminates or flashes yellow.
Illuminates
Fault in system.
If the swivelling device for curve
lighting fails, the corresponding low
beam lamp is deactivated and the fog lamp is switched on.Seek the assistance of a workshop.
Flashes System switched to symmetrical low
beam.
Control indicator B flashes for
approx. 4 seconds after the ignition is
switched on as a reminder that the
system has been switched 3 109.
Adaptive Forward Lighting (AFL)
3 110.
Fog light > illuminates green.
Illuminates when the front fog lights
are on 3 111.
Rear fog light
r illuminates yellow.
Illuminates when the rear fog light is
on 3 112.
Cruise control
m illuminates green.Illuminates when the system is on
3 141.
Door open
Q illuminates red.
Illuminates when a door or the tailgate
is open.
Page 102 of 217

100Instruments and controlsVehicle messagesMessages are given via the
instrument panel display or as
warning and signal buzzers. Check
control messages appear on the
Info-Display. Some appear in an
abbreviated form. Confirm warning
messages with the multifunction knob
3 93, 3 96.
Warning chimes
When starting the engine or
whilst driving ■ If the electronic key is not present or is not recognised.
■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting off.
■ If a certain speed is exceeded with the parking brake applied.■ If the speed programmed at thefactory is exceeded.
■ If the vehicle has automated manual transmission and the
driver's door is opened when the
engine is running, a gear is
engaged and the foot brake is not
depressed.
When the vehicle is parked and the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ With Open&Start system and automatic transmission, if the
selector lever is not in P.
■ For automated manual transmission, if the parking brake isnot applied and no gear is engaged
when the engine is switched off.Battery voltage
Low battery voltage in radio remote
control or electronic key. On vehicles
without check control, the message
InSP3 appears in the instrument
panel display. Replace the battery
3 27, 3 28.
Brake light switch Brake light does not come on duringbraking. Have the cause of the fault
remedied immediately by a
workshop.
Page 103 of 217

Instruments and controls101Engine cooling level
Low fluid level in engine cooling
system. Check coolant level 3 154.
Drain diesel fuel filter If there is water in the diesel fuel filter,
the message InSP4 appears in the
instrument panel. Consult a
workshop.
Lighting
Important exterior lights, including
cables and fuses, are monitored. In
trailer mode, trailer lighting is also
monitored. Trailers with LED lighting
must have an adapter that enables
light monitoring as with conventional
bulbs.
The failed lighting will be indicated in
the information display or the
message InSP2 will appear in the
instrument panel display.
Anti-theft alarm system
System fault in anti-theft alarm
system. Have the cause of the fault
remedied by a workshop.
Tyre pressure
On vehicles with tyre pressure
monitoring system, if there is low tyre pressure, information which tyre to
check appears on the display.
Reduce speed and check tyre
pressure at the next opportunity. Tyre
pressure monitoring system 3 174.
Check tyre pressure 3 173, 3 205.
Page 110 of 217
108LightingLightingExterior lighting.......................... 108
Interior lighting ........................... 113
Lighting features ........................114Exterior lighting
Light switch
Turn light switch:
7=Off8=sidelights9=low beam
Control indicator 8 3 92.
If the ignition is switched off with the
low beam on, only the sidelights
remain illuminated.
Automatic light control
Light switch set to AUTO: When the
engine is running, the exterior lighting is switched on when external lightingconditions are poor.
For reasons of safety, the light switch
should always remain in the AUTO
position.
Move light switch to 9 if visibility is
poor because of fog or mist.
Page 112 of 217

110Lighting
However, when driving in countries
where traffic drives on the opposite
side of the road, adjust the headlights
to prevent dazzling of oncoming
traffic.
Vehicles with halogen headlight
system Have the headlights adjusted by a
workshop.
Vehicles with adaptive forward lightingAdapting the aim of the headlight
beam:
1. Pull lever and hold.
2. Switch on ignition.
3. An acoustic signal sounds after approx. 3 seconds.
Control indicator B 3 92.
Daytime running lights
With the ignition on and the light switch set to 7 or AUTO , the sidelights
are switched on. When the engine is
running, headlights illuminate.
On vehicle without automatic light
control, 9 must be switched on when
it gets dark for illumination of the
instrument panel.
The daytime running lights switch off when the ignition is switched off.
Adaptive forward lighting
Adaptive forward lighting with Bi-
Xenon headlights improves lighting in
curves and increases headlight
range.Curve lighting
The light beam pivots based on
steering wheel position and speed.
Motorway lighting
At higher speeds and continuous
straight ahead travel, the beam
automatically raises slightly, thereby
increasing headlight range.
Control indicator B 3 92.