Climate control107Maintenance
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.
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
110Driving and operatingPower 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 3 86.
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 87 and a message in the
Driver Information Centre 3 87).
Some functions, e.g. Infotainment
system, are available for use as soon as you enter the vehicle.
Accessory power mode
Press Start/Stop button 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 button. 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 the Start/Stop button
to release the steering wheel lock. A
corresponding message appears in
the Driver Information Centre 3 86.At very low outside temperatures
(e.g. below -10 °C) keep the clutch
pedal depressed while pressing the
Start/Stop button until the engine
starts.
If one of the starting conditions is not
applied, a corresponding message
appears in the Driver Information
Centre 3 86.
Vehicle messages 3 87.
Engine stop Electronic key must be inside the
vehicle, either in the card reader or
the front passenger compartment.
With the vehicle stationary, press the
Start/Stop button to stop the engine.
The steering wheel lock is engaged
when the driver's door is opened and the vehicle is locked.
Central locking system 3 23.
Retained power off
Press the Start/Stop button for more
than two seconds; the engine is
stopped while some functions, e.g.
Infotainment system, are available for
use for approx. 10 minutes.
112Driving and operatingIdle 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.
Vehicle shutdown
Fuel cut-off system
If the vehicle runs out of fuel, the fuel
system is cut-off and must be reset
after refuelling. A corresponding
warning message may also appear in the Driver Information Centre 3 86.9 Danger
If you can smell fuel in the vehicle,
or a fuel leak is present, have thecause of this remedied
immediately by a workshop. Do
not reset the fuel cut-off system, to avoid the risk of fire.
Resetting with remote control
key / manual key
To reset the fuel cut-off system and
enable the vehicle to be driven:
1. Turn the ignition key to position M
3 109.
2. Wait a few minutes to allow the fuel system to be reset.
3. Turn key to position D to start the
engine.
If the engine does not start, repeat the procedure.
Resetting with electronic keysystem
To reset the fuel cut-off system and
enable the vehicle to be driven:
1. Insert the electronic key in the card reader 3 110.
2. Press the engine start/stop button
without depressing any pedals.
3. Wait a few minutes to allow the fuel system to be reset.
If the engine does not start, repeat the procedure.
Electronic key system 3 21.
Driving and operating113
Power button 3 110.
Refuelling 3 127.
Overrun cut-off The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator is released.
Stop-start system The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It restarts the engine
automatically as soon as the clutch
pedal is depressed.
Activation The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing the Î button.
LED in the button illuminates to
indicate deactivation and a
corresponding message appears in
the Driver Information Centre 3 86.
If deactivated manually, it is possible to reactivate the stop-start system by
pressing the Î button again.
Vehicle messages 3 87.
Autostop
If the vehicle is at a low speed or at a standstill, activate an Autostop as
follows:
■ Depress the clutch pedal.
■ Move the selector lever to neutral.
■ Release the clutch pedal.
The engine will be switched off while
the ignition stays on.
An Autostop is indicated when Ï
illuminates in the instrument cluster
3 85.
114Driving and operating
During an Autostop, brake
performance will be maintained.
However, brake assist is not available
3 118.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled:
■ The stop-start system is not manually deactivated.
■ the bonnet is fully closed.
■ the driver's door is closed and the driver's seat belt is fastened.
■ the vehicle battery is sufficiently charged and in good condition.
■ the engine is warmed up.
■ the engine coolant temperature is not too high.
■ the outside temperature is not too low or too high (e.g. below 0 °C orabove 30 °C).
■ the brake vacuum is sufficient.
■ the defrosting function is not activated 3 99.■ the self-cleaning function of the
diesel particle filter is not active
3 115.
■ the vehicle has moved since the last Autostop.
Otherwise an Autostop will be
inhibited.
Restart of the engine by the
driver
Depress the clutch pedal to restart the
engine.
Control indicator Ï 3 85 extinguishes
in the instrument cluster when the engine is restarted.
Restart of the engine by the
stop-start system
The selector lever must be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
■ The stop-start system is manually deactivated.
■ the bonnet is opened.■ the driver's seat belt is unfastened and the driver's door is opened.
■ the vehicle battery is discharged.
■ the engine temperature is too low.
■ the brake vacuum is not sufficient.
■ the vehicle starts to move.
■ the defrosting function is activated 3 99.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during engine restart may be
noticeable.
Fault If a fault occurs in the stop-start
system, the LED in button Î
illuminates, and a corresponding
message appears in the Driver
Information Centre 3 86. Seek the
assistance of a workshop.
Vehicle messages 3 87.
Warning chimes 3 87.
Driving and operating117Brakes
The brake system comprises two
independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when you depress the
brake pedal firmly. You need to use
considerably more force for this. The
braking distance is extended. Seek
the assistance of a workshop before
continuing your journey.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has
been depressed once or twice.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear this in mind when being towed.
If control indicator R illuminates in
the instrument cluster while driving and a corresponding message
appears in the Driver Information
Centre, there is a fault in the braking
system. Seek the assistance of a
workshop immediately.Control indicator R 3 83.
Vehicle messages 3 87.
Antilock brake system Antilock brake system (ABS)
prevents the wheels from locking.
ABS starts to regulate brake pressure as soon as a wheel shows a tendency
to lock. The vehicle remains
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
Control indicator u 3 83.
Fault If control indicator u does not go out
a few seconds after the ignition is
switched on, or if it illuminates while driving, there is a fault in the ABS.
Control indicator F 3 82 may alsoilluminate in the instrument cluster
together with a corresponding
message in the Driver Information
Centre. The brake system remains
operational but without ABS
regulation.9 Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
If control indicators u, F , R 3 83
and C 3 82 illuminate, the ABS and
ESP are deactivated and a
corresponding message appears in
the Driver Information Centre. Have
the cause of the fault remedied by a
workshop.
Vehicle messages 3 87.
118Driving and operatingParking brake
Always apply parking brake firmly
without operating the release button,
and apply as firmly as possible on a
downhill or uphill slope.
To release the parking brake, pull the lever up slightly, press the release
button and fully lower the lever.
To reduce the operating forces of the
parking brake, depress the foot brake
at the same time.
Control indicator R 3 83.
Brake assist
If the brake pedal is depressed
quickly and forcefully, maximum
brake force is automatically applied
(full braking).
Maintain steady pressure on the
brake pedal for as long as full braking
is required. Maximum brake force is
automatically reduced when the
brake pedal is released.
Brake assist is not available during an
Autostop.
Stop-start system 3 113.
Hill start assist The system helps prevent unintendedmovement when driving away on
inclines.
When releasing the foot brake after
stopping on an incline, the brakes
remain on for a further 2 seconds. The brakes release automatically as soon
as the vehicle begins to accelerate.Ride control systems
Traction Control system
The Traction Control system (TC) is a
component part of the Electronic
Stability Program (ESP® Plus
) which
improves driving stability when
necessary, regardless of the type of
road surface or tyre grip, by
preventing the drive wheels from
spinning.
As soon as the drive wheels starts to spin, engine output is reduced and
the wheel spinning the most is braked
individually. This considerably
improves the driving stability of the
vehicle on slippery road surfaces.
TC is operational as soon as the
ignition is switched on and control
indicator b extinguishes in the
instrument cluster.
When TC comes into action b
flashes.
Driving and operating1199Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 83.
Deactivation
When spinning of the drive wheels is
required, TC can be deactivated:
Press the Ø button. LED illuminates
in button and a corresponding
message appears in the Driver
Information Centre 3 86.
TC is reactivated by pressing the Ø
button again. LED extinguishes in
button. TC is also reactivated the next time the ignition is switched on.
When vehicle speed reaches
30 mph the TC function will be
restored automatically.
Fault
If the system detects a fault, control indicator b 3 83 illuminates in the
instrument cluster together with F
3 82 and a corresponding message
appears in the Driver Information
Centre 3 86.
Have the cause of the fault remedied
by a workshop.
Vehicle messages 3 87.Electronic stability
program
The Electronic Stability Program
(ESP® Plus
) improves driving stability
when necessary, regardless of the
type of road surface or tyre grip. It also
prevents the drive wheels from
spinning.
As soon as the vehicle starts to
swerve (understeer/oversteer),
engine output is reduced and the
wheels are braked individually. This
considerably improves the driving
stability of the vehicle on slippery road
surfaces.
ESP® Plus
is operational as soon as
the ignition is switched on and control
indicator b extinguishes in the
instrument cluster.
When ESP® Plus
comes into action b
flashes.