88Instruments and controlsIlluminates red when the engine is
running
Stop, switch off engine.Caution
Coolant temperature too high.
Check coolant level 3 148.
If there is sufficient coolant, consult a workshop.
The control indicator must be blue
before continuing driving.
Preheating
! illuminates yellow.
Preheating is activated. Only
activates when outside temperature
is low.
AdBlue Y illuminates yellow.
AdBlue level is low. Refill AdBlue as
soon as possible, to avoid prevention
of engine starts.
Illuminates together with control
indicator F to indicate a system
failure or as a warning that engine starting may not be possible after a
certain distance. Seek the assistance
of a workshop immediately.
A corresponding message appears in the Driver Information Centre (DIC)
3 90.
Adblue percentage remaining can
also be checked by pressing button
repeatedly on end of wiper lever. Trip
computer 3 93.
AdBlue 3 123.
Tyre pressure monitoring
system
w illuminates or flashes yellow.
Illuminates briefly when the ignition is
switched on.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Control indicator w illuminates
together with C 3 86 and a
corresponding message appears inthe Driver Information Centre (DIC)
when a puncture or severely under- inflated tyre is detected.
Flashes
Fault in system. After a delay the
control indicator illuminates
continuously. Consult a workshop.
Control indicator w illuminates
together with A 3 86 and a
corresponding message appears in
the DIC when a tyre without a
pressure sensor is mounted (e.g.
spare wheel).
Tyre pressure monitoring system (TPMS) 3 166.
Engine oil pressure
I illuminates red.
Illuminates briefly when the ignition is
switched on.
90Instruments and controlsFog light> illuminates green.
Illuminated when the front fog lights
are on 3 99.
Rear fog light ø illuminates yellow.
Illuminated when the rear fog light is
on 3 99.
Cruise control m , U illuminates green or yellow.
m illuminates green when a certain
speed is stored.
U illuminates green when the system
is on.
Speed limiter U illuminates yellow.
U illuminates yellow when the
system is on.
Cruise control and speed limiter
3 133.Tachograph
& illuminates when there is a fault
3 95.
Door open y illuminates red.
Illuminates when a door is not fully
closed.
A corresponding message also
appears in the Driver Information
Centre (DIC) 3 90.Information displays
Driver Information Centre
Depending on vehicle configuration,
the following items appear in the
display:
● outside temperature 3 77
● clock 3 77
● odometer 3 80
● trip odometer 3 80
● service display 3 81
● vehicle messages 3 91
● trip computer 3 93
92Instruments and controlsWarning chimesOnly one warning chime will sound at a time.
A corresponding message may also
appear in the Driver Information
Centre (DIC) when a warning chime
is sounded.
When starting the engine or whilst driving:
● If seat belt is not fastened 3 49.
● During operation of the turn and lane-change signals 3 99.
● During illumination of certain control indicators.
● If the parking assist detects an object 3 136.
● If the vehicle speed briefly exceeds a set limit 3 133,
3 136.
● If a door or the bonnet is not properly closed when vehicle
exceeds a certain speed.
● If there is a fault in the brake system 3 86.● If the vehicle battery is not
charging 3 86.
● If engine lubrication is interrupted
3 88.
● If AdBlue needs to be refilled or a
fault is present 3 123.
● If the electronic key is outside of the detection range.
Electronic key system 3 22,
Power button 3 116.
When the vehicle is parked and/or
the driver's door is opened:
● If the key has been left in the ignition.
● If the electronic key has been left
in the card reader.
Electronic key system 3 22,
Power button 3 116.
● If the vehicle is in an Autostop. Stop-start system 3 119.
● If the exterior lights are on.Engine oil level
If the minimum engine oil level is
reached, a message is displayed in
the Driver Information Centre (DIC)
3 90 for 30 seconds after the engine
is started.
Check oil level 3 147.
98LightingHeadlights when drivingabroad
The asymmetrical headlight beam
extends visibility at the edge of the
road at the passenger side.
However, when driving in countries
where traffic drives on the opposite
side of the road, adjust the headlights to prevent dazzling of oncoming
traffic.
Adjustment
Open the bonnet 3 146 and identify
the marking (shown in the illustration)
beside each of the headlights.
For each headlight:
Using a screwdriver, turn the screw
by a 1
/4 turn towards the
] symbol to
lower the beams or towards the <
symbol to raise the beams.
Ensure the headlight beams are
returned to their original positions
when required.
Daytime running lights
Daytime running lights increase
visibility of the vehicle during daylight.
They are switched on automatically
when the ignition is switched on.
If required, the daytime running lights can be deactivated via the
Infotainment system. For further
information, refer to Infotainment
system manual.
Automatic light control 3 97.Adaptive forward lighting
Cornering light
With the low beam switched on,
depending on the steering angle,
vehicle speed and gear selected
when cornering, the front fog light will also switch on, to illuminate the
corner of the road on the respective
side.
Hazard warning flashers
Operated with the ¨ button.
Climate control113Maintenance
Air intake The air intake in front of the
windscreen in the engine
compartment must be kept clear to
allow air intake. Remove any leaves,
dirt or snow.
Pollen filter
The pollen filter cleans dust, soot,
pollen and spores from the air
entering the vehicle through the air
intake.
Notice
Pollen filter is only fitted to vehicles
with air conditioning system.
Air conditioning regular operation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a month, irrespective of the weather
and time of year. Operation with
cooling is not possible when outside
temperature is too low.Service
For optimal cooling performance, it is recommended that the climate control
system be checked annually, starting three years after initial vehicle
registration, including:
● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check
116Driving and operatingStarting and operating
New vehicle running-in
Do not brake unnecessarily hard for
the first few journeys and after new
disc brake pads have been fitted.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period, fuel and engine oil consumption may be
higher and the cleaning process of
the diesel particle filter may take
place more often. Autostop may be
inhibited to allow for charging the
vehicle battery.
Stop-start system 3 119.
Diesel particle filter 3 122.Ignition switch positions0:Ignition off1:Steering wheel lock released,
ignition off2:Ignition on
Diesel engines: preheating3:StartingPower button
Electronic key must be inside the
vehicle, either in the card reader or
the front passenger compartment.
If the electronic key is not inside the
vehicle, a corresponding message
appears in the Driver Information
Centre (DIC) 3 90.
Notice
Do not put the electronic key in the
load compartment during driving, as
this is outside of the detection zone
(indicated by a warning chime at low
speed 3 92 and a message in the
Driver Information Centre (DIC)
3 91).
Driving and operating117Some functions, e.g. Infotainment
system, are available for use as soon
as you enter the vehicle.
Accessory power mode
Press START/STOP without
operating clutch or brake pedal to
enable further electrical functions to
be operated.
Engine start
Operate clutch and brake pedal and press START/STOP . Release button
after starting procedure begins.
If a gear is engaged, the engine can
be started only by operating the clutch
pedal and pressing the
START/STOP button.
In some cases, it may be necessary
to move the steering wheel slightly
while pressing START/STOP to
release the steering wheel lock. A
corresponding message appears in
the DIC 3 90.
At very low outside temperatures (e.g. below -10 °C) keep the clutch pedal
depressed while pressing
START/STOP until the engine starts.If one of the starting conditions is not
applied, a corresponding message
appears in the DIC 3 90.
Vehicle messages 3 91.
Engine stop
Electronic key must be inside the
vehicle, either in the card reader or the front passenger compartment.
With the vehicle stationary, press
START/STOP to stop the engine. The
steering wheel lock is engaged when
the driver's door is opened and the
vehicle is locked.
If the electronic key is not detected, a
corresponding message appears in
the DIC 3 90. In this event, press
START/STOP for 2 seconds to stop
the engine.
Central locking system 3 23.
Retained power off
Press START/STOP for more than
two seconds; the engine is stopped
while some functions, e.g.
Infotainment system, are available for
use for approx. 10 minutes.These functions stop working when
the driver's door is opened and the vehicle is locked.
Notice
Always take the electronic key with
you when exiting the vehicle.
The electronic key being left in the
card reader is indicated by a warning chime 3 92 and a message in the
Driver Information Centre (DIC)
3 91 when the driver's door is
opened.9 Danger
Never leave an electronic key
inside the vehicle when children or animals are left in the vehicle, to
avoid unintended operation of
windows, doors or engine. Risk of
fatal injury.
Fault
If the engine cannot be started, the
cause may be one of the following:
● Fault in electronic key.
● Electronic key out of reception range.
118Driving and operating● Battery voltage too low.
● Overload of the central locking system by operating at frequentintervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
Battery replacement 3 20.
Central locking system 3 23.
Electronic key system 3 22.
Starting the engine
Manual transmission: operate clutch.
Do not accelerate.
Diesel engines: turn the key to
position 2 for preheating until control
indicator ! extinguishes in the
instrument cluster 3 88.
Turn key to position 3 and release.
The increased engine speed
automatically returns to normal idling
speed as the engine temperature
rises.
Start attempts should not last longer
than 15 seconds. If engine does not
start, wait 15 seconds before
repeating starting procedure. If
necessary, depress accelerator
before repeating starting procedure.
Before restarting or to switch off the
engine, turn key back to 0.
During an Autostop, the engine can
be started by depressing the clutch
pedal. Stop-start system 3 119.
Turbo engine warm-up Upon start-up, engine available
torque may be limited for a short time,
especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully protect the engine.Idle speed control
To increase the idle speed, press theswitch. After a few seconds the
function will be activated.
The function will be deactivated
when:
● The clutch pedal is depressed.
● The accelerator pedal is depressed.
● Vehicle speed is above 0 mph.
● Control indicator F, W or C
illuminate in the instrument
cluster.
To increase or decrease the fast idle
speed rate, consult a workshop.