Driving and operating139Fault
If a fault occurs in the stop-start
system, the LED in Î illuminates,
and a corresponding message
appears in the Driver Information
Centre 3 102 . Seek the assistance of
a workshop.
Vehicle messages 3 103.
Warning chimes 3 104.
Parking9 Warning
● Do not park the vehicle on an
easily ignitable surface. The
high temperature of the
exhaust system could ignite the
surface.
● Always apply parking brake without pressing release
button. Apply as firmly as
possible on a downhill slope or
uphill slope. Depress brake
pedal at the same time to
reduce operating force.
● Switch off the engine.
● If the vehicle is on a level surface or uphill slope, engage
first gear. On an uphill slope,
turn the front wheels away from
the kerb.
If the vehicle is on a downhill
slope, engage reverse gear.
Turn the front wheels towards the kerb.
● Close the windows.
● Remove the ignition key from the ignition switch. Turn the
steering wheel until the
steering wheel lock is felt to
engage.
● Lock the vehicle by pressing e on
the remote control 3 26.
Activate the anti-theft alarm
system 3 38.
● The engine cooling fans may run
after the engine has been
switched off 3 166.
Caution
After running at high engine
speeds or with high engine loads,
operate the engine briefly at a low load or run in neutral for approx.30 seconds before switching off, in
order to protect the turbocharger.
Vehicle storage 3 165.
Driving and operating147Caution
It is inadvisable to drive with hand
resting on the selector lever.
Upshift 3 99.
Stop-start system 3 136.
Brakes
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 3 102, there is a fault in the
braking system. Seek the assistance
of a workshop immediately.Control indicator R 3 98.
Vehicle messages 3 103.
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.
After starting-off, the system performs a self-test which may be audible.
Control indicator u 3 99.
Fault
If control indicator u does not go out
a few seconds after the ignition is switched on, or if it illuminates while
148Driving and operatingdriving, there is a fault in the ABS.
Control indicator F 3 98 may also
illuminate 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 98
and C 3 98 illuminate, there is a fault
in the braking system. A
corresponding message also
appears in the Driver Information
Centre 3 102. Have the cause of the
fault remedied by a workshop.
Vehicle messages 3 103.
Parking brake9 Warning
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
brake pedal at the same time.
Control indicator R 3 98.
Parking 3 139.
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 3 136.
Hill start assist
The system helps prevent unintended movement when driving away on
inclines.
When releasing the brake pedal after
stopping on an incline (with the
selector lever in a forward gear or
reverse gear), the brakes remain on
Driving and operating149for a further two seconds. The brakes
release automatically as soon as the
vehicle begins to accelerate.Caution
The Hill start assist cannot
completely prevent vehicle
movement in all situations
(extremely steep gradients, etc.).
If necessary, depress the brake
pedal to prevent the vehicle from
rolling forwards or backwards.
The Hill start assist is not active
during an Autostop.
Stop-start system 3 136.
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. A corresponding
message also appears in the Driver
Information Centre 3 102.
When TC is active b flashes.9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 99.
Trailer stability assist (TSA) 3 163.
Enhanced Traction function
150Driving and operatingIf necessary, in the event of soft
ground, mud or snow-covered road
surfaces, the Traction control system
(TC) can be deactivated to enhance
traction:
Press Ø on the instrument panel.
Control indicator Ø illuminates in the
instrument cluster and a
corresponding message appears in
the Driver Information Centre 3 102.
When vehicle speed reaches 50 km/h, the system switches
automatically from Enhanced
Traction function to TC operation.
Control indicator Ø extinguishes in
the instrument cluster.
TC is reactivated by pressing Ø
again. Control indicator Ø
extinguishes.
TC is also reactivated the next time
the ignition is switched on.
Fault
If the system detects a fault, control indicator b 3 99 illuminates together
with F 3 98 in the instrument cluster
and a corresponding message
appears in the Driver Information
Centre 3 102.
TC is not operational. Have the cause of the fault remedied by a workshop.
Vehicle messages 3 103.
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 thewheels 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. A corresponding
message also appears in the Driver
Information Centre 3 102.
When ESP® Plus
comes into action b
flashes.9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 99.
Trailer stability assist (TSA) 3 163.
Driving and operating151Enhanced Traction function
If necessary, in the event of soft
ground, mud or snow-covered road
surfaces, ESP® Plus
can be
deactivated to enhance traction:
Press Ø on the instrument panel.
Control indicator Ø illuminates in the
instrument cluster and a
corresponding message appears in
the Driver Information Centre 3 102.
When vehicle speed reaches
50 km/h, the system switches
automatically from Enhanced
Traction function to ESP® Plus
operation. Control indicator Ø
extinguishes in the instrument cluster.
ESP® Plus
is reactivated by pressing
Ø again. Control indicator Ø
extinguishes.
ESP® Plus
is also reactivated the next
time the ignition is switched on.
Engine Drag Torque Control
The engine drag torque control
system is an integral feature of
ESP® Plus
. When downshifting under
slippery road conditions, the engine speed and torque increases to help
prevent locking of the drive wheels
during sudden deceleration.
Fault
If the system detects a fault, control indicator b 3 99 illuminates together
with F 3 98 in the instrument cluster
and a corresponding message
appears in the Driver Information
Centre 3 102.
The Electronic stability program
(ESP® Plus
) is not operational. Have
the cause of the fault remedied by a
workshop.
Vehicle messages 3 103.
158Driving and operatingThe area displayed by the camera is
limited. The distance of the image that
appears on the display differs from
the actual distance.
Note
To achieve the optimum visibility, the
rear view camera must not be
obscured by dirt, snow or ice.
Activation
Interior mirror display screen
Rear view camera display is
automatically activated when reverse
gear is engaged. An audible signal
confirms activation.
Infotainment system display screen
In vehicles with Navigation system,
the rear view camera display may be
shown on the Infotainment system
display screen (depending on
version).
Trajectory lane display (1)
Depending on version, the trajectory
lane (1) of the vehicle is shown in blue
on the Info-Display. It shows the path of the vehicle in accordance with the
steering angle.
Fixed lane display (2)
The fixed lane display (2) shows the
path of the vehicle if the wheels are
kept straight.
Guide lines (3, 4, 5) are used together
with the fixed lane display (2) and
indicate the distance behind the
vehicle.
Driving and operating163level. Since engine power decreases
as altitude increases due to the air
becoming thinner, therefore reducing
climbing ability, the permissible gross
train weight also decreases by 10%
for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving
on roads with slight inclines (less than
8%, e.g. motorways).
The permissible gross train weight
must not be exceeded. This weight is
specified on the identification plate
3 208.
Vertical coupling load
The vertical coupling load is the load
exerted by the trailer on the coupling
ball. It can be varied by changing the
weight distribution when loading the
trailer.
The maximum permissible vertical
coupling load is specified on the
towing equipment identification plate
and in the vehicle documents. Always aim for the maximum load, especially
in the case of heavy trailers. The
vertical coupling load should never
fall below 25 kg.In the case of trailer loads of
1200 kg or more, the vertical coupling load should not be less than 50 kg.
Rear axle load
When the trailer is coupled and the
towing vehicle fully loaded (including
all occupants), the permissible rear
axle load (see identification plate or
vehicle documents) must not be
exceeded.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is selectively braked until the snaking
ceases. While the system is working, keep steering wheel as still as
possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Program (ESP® Plus
) 3 150.