94Instruments and controlsFuel gauge
Displays the fuel level in the tank
depending on the operation mode.
Control indicator Y illuminates if the
level in the tank is low. Refuel
immediately if it flashes.
Never run the tank dry.
Because of the fuel remaining in the
tank, the top-up quantity may be less
than the specified tank capacity.
Service display
The message InSP appears when it
is time for servicing. Further
information 3 207.
Control indicators
The control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. When the ignition is
switched on, most control indicators
will illuminate briefly as a functionality
test.
The control indicator colours mean:Red=Danger, important
reminder,Yellow=Warning, information,
fault,Green=Confirmation of activation,Blue=Confirmation of activation.
96Instruments and controlsTurn signal
O illuminates or flashes green.
Illuminates The control indicator illuminates
briefly when the parking lights are
switched on.
Flashes
The control indicator flashes if a turn
signal or the hazard warning flashers
are activated.
Rapid flashing: failure of a direction
indicator lamp or associated fuse,
failure of direction indicator lamp on
trailer.
Bulb replacement 3 166. Fuses
3 181.
Turn signals 3 120.
Seat belt reminder X illuminates or flashes red.
Illuminates After the ignition is switched on until
the seat belt is fastened.Flashes
After starting off until the seat belt is
fastened.
Fastening the seat belt 3 55.
Airbag, belt tensioners and
anti-roll bars v illuminates red.
When the ignition is switched on, the
control indicator illuminates for
approx. 4 seconds. If it does not
illuminate, does not go out after
4 seconds or illuminates whilst
driving, there is a fault in the belt
tensioner, the airbags, the deployable
anti-roll bars or the seat occupancy
recognition system. The systems may fail to trigger in the event of an
accident.
Deployment of the belt tensioners,
airbags or deployable anti-roll bars is
indicated by continuous illumination
of v.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Airbag system, belt tensioners 3 57,
3 54.
Seat occupancy
recognition y illuminates or flashes yellow.
Illuminated
If the vehicle is equipped with seat occupancy recognition, y illuminates
for approx. 4 seconds after the
ignition is switched on.
If a child restraint system with
transponders is detected, y remains
illuminated. Only then a child restraint system with transponders may be
used on the front passenger seat as
the front passenger airbag systems
are deactivated 3 60.
98Instruments and controls
Flashes with switched on
ignition
Fault in the immobiliser system. The
engine cannot be started 3 32.
Switch off the ignition and repeat the
start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Brake and clutch system R illuminates or flashes red.
Illuminated
Illuminates after the ignition is
switched on if the parking brake is
applied 3 147.
Illuminates when the parking brake is
released if the brake and clutch fluid
level is too low 3 164.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Flashes
On vehicle with automated manual
transmission, flashes for a few
seconds when the ignition is switched
off if the parking brake is not applied.
On vehicles with automated manual
transmission, flashes when the
driver's door is opened if no gear is
engaged and the parking brake is not
applied.
Antilock brake system
(ABS) u illuminates red.
Illuminates for a few seconds after the ignition is turned on. The system is
ready for operation when the control indicator goes out.
If the control indicator does not go out after 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 3 146.Sport mode
1 illuminates yellow.
The symbol is illuminated when Sport
mode is on 3 139, 3 143.
Winter mode
T illuminates yellow.
The symbol is illuminated when
Winter mode is on 3 139, 3 143.
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.
100Instruments and controls
Control indicator illuminatesyellow
Fault in system or tyre without
pressure sensor mounted (e.g. spare
wheel). Consult a workshop.
Flashes Flashes three times to indicatesystem initialisation.
Deflation detection system 3 191,
tyre pressure monitoring system 3 191.
Interactive driving system,
continuous damping
control, sport mode
IDS+ illuminates yellow.
Illuminates when the ignition is
switched on and goes out shortly after the engine starts. Illumination whilst
driving indicates a fault in the system.
Have the cause of the fault remedied
by a workshop.
IDS Plus
3 148, CDC 3 149, Sport
mode 3 148.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.
3. Move out of the flow of traffic as quickly 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 steeringwheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 161.
Low engine oil level
S illuminates yellow.
Engine oil level is checked
automatically.
Illuminates when the engine isrunning
Low engine oil level. Check engine oil
level and top up as necessary
3 161.
Low fuel Y illuminates or flashes yellow.
Instruments and controls109
Always day design black or coloured
text on light background.
Always night design white or coloured
text on dark background.
Selection is indicated by a o in front
of the menu item.
Ignition logic
See Infotainment system manual.Vehicle messages
Messages 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
3 102, 3 105.
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 is
not applied and no gear is engaged when the engine is switched off.
110Instruments and controls
When operating the retractable
hardtop ■ Indicator buzzer upon completed opening or closing of the
convertible hardtop.
■ Indicator buzzer upon completed raising or lowering of the electricload compartment loading aid.
■ Gong tone if the tailgate is not closed during roof operation.
■ Gong tone if the tailgate is not fully open during operation of the load
compartment loading aid.
■ Gong tone during roof operation if vehicle speed exceeds 30 km/h.
■ Gong tone when vehicle speed exceeds 30 km/h if the roof is not
fully open or closed.
■ Three gong tones during roof or loading aid operation if the load
compartment blind is not attached.
■ Three gong tones during roof operation if outside temperature is
below -20 °C, vehicle battery
voltage is too low or the system is
overloaded.■ Continuous warning buzzer during roof operation if the anti-roll bars
have been triggered.
■ Continuous warning buzzer starting
one minute before the end of the
9-minute standby time with the roof
in an intermediate position or the loading aid in a raised position.
■ Persistent warning buzzer when closing the tailgate, if the lowering
process of the electric load aid is
not complete or has been
interrupted.
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 20, 3 22.
Brake light switch
Brake light does not come on during
braking. Have the cause of the fault
remedied immediately by a
workshop.Engine cooling level
Low fluid level in engine cooling
system. Check coolant immediately
3 162.
Drain diesel fuel filter
If there is water in the diesel fuel filter, the message InSP4 appears in the
instrument panel. Consult a
workshop.
Lighting119
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
lighting
Adapting 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 3 101.
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 lightingThe 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 3 101.
Hazard warning flashers
Operated with the ¨ button.
The hazard warning flashers activate
automatically if the airbags deploy.
Climate control125
■Open side air vents as required and
direct them towards door windows.
■ For simultaneous warming of the foot well, set air distribution control
to J.
Air conditioning system
In addition to the heating and
ventilation system, the air
conditioning system has:
n=Cooling4=Air recirculationCooling n
Operated with the n button and is
functional only when the engine and
fan are running.
The air conditioning system cools and
dehumidifies (dries) as soon as the
outside temperature is slightly above
freezing point. Therefore
condensation may form and drip from under the vehicle.
If no cooling or drying is required,
switch the cooling system off to save
fuel.
Air recirculation system 4
Operated with the 4 button.9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up. The quality
of the passenger compartment air
deteriorates, which may cause the vehicle occupants to feel drowsy.
Air distribution to l: Air recirculation
is deactivated.
Maximum cooling Briefly open the windows so that hot
air can disperse quickly.
■ Cooling n on.
■ Air circulation system 4 on,
■ Set air distribution control to M.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Open all vents.
Demisting and defrosting the
windows ■ Cooling n on.
■ Set air distribution control to l.
■ Set temperature control to warmest
level.
■ Set fan speed to highest level.
■ Switch on heated rear window Ü.