Page 115 of 187

Driving and operating113
To release the parking brake, pull thelever 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.
A warning chime will sound if a certain speed is exceeded with the parking
brake applied.
Notice
The volume of the warning chime
can also be adjusted via the Driver
Information Centre 3 79.
Control indicator R 3 74.
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.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 two seconds.
The brakes release automatically as
soon as the vehicle begins to
accelerate.
If control indicator Z illuminates
while driving, there is a fault in the Hill
start assist 3 75 . Seek the assistance
of a workshop to have the fault
remedied.
The Hill start assist is not active
during an Autostop.
Stop-start system 3 103.Ride control systems
Traction Control system
The Anti-Slip Regulator (ASR) is a
component of the Electronic Stability
Program (ESP).
ASR 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.
ASR is operational as soon as the
control indicator x extinguishes.
When ASR is active, control indicator x flashes.
Page 116 of 187

114Driving and operating9Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Deactivation
ASR can be switched off when
spinning of drive wheels is required:
press button ASR OFF briefly.
LED in button illuminates and a
message appears in the Driver
Information Centre.
ASR is reactivated by pressing the
ASR OFF button again.
ASR is also reactivated the next time
the ignition is switched on.
Fault ASR will switch off automatically in
the event of a fault. Control indicator
x will illuminate in the instrument
cluster in conjunction with a message
in the Driver Information Centre 3 79.
Have the cause of the fault remedied
by a workshop.
Control indicator x 3 76.
Electronic stability
program
Electronic Stability Program (ESP)
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. Thisconsiderably improves the driving
stability of the vehicle on slippery road
surfaces.
ESP is operational as soon as control
indicator x extinguishes.
When ESP comes into action, control indicator x flashes.
The ESP system is automatically
activated when the vehicle is started
and cannot be deactivated9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Fault
In the event of a fault, ESP will be
automatically switched off and control
indicator x will illuminate in the
instrument cluster in conjunction with
a message in the Driver Information
Centre 3 79. The LED in the ASR
OFF button will also illuminate.
Page 118 of 187

116Driving and operating
Alternatively accelerate to the desiredspeed and store by pushing lever
upwards ( +).
Reduce speed
With cruise control active, push lever
downwards ( -) or briefly push lever
downwards ( -) repeatedly; speed
decreases continuously or in small
increments.
Deactivation
Automatic deactivation:
■ vehicle speed below approx. 20 mph,
■ the brake pedal is depressed,
■ the clutch pedal is depressed,
■ the traction control system/Anti-Slip
Regulator (ASR) or Electronic
Stability Program (ESP) is
operating.
Resume stored speed Press button = at a speed above
20 mph. The stored speed will be
obtained.Switching off
Turn end of lever to the OFF position;
control indicator m extinguishes. The
stored speed is deleted. Switching off the ignition also deletes the stored
speed.Object detection
systems
Parking assist
The parking assist makes parking
easier by measuring the distance between the vehicle and obstacles,
and giving acoustic signals. It is the
driver, however, who bears full
responsibility for the parking
manoeuvre.
The system consists of four ultrasonic parking sensors in the rear bumper.
Control indicator r 3 75.
Page 126 of 187
124Driving and operating
The maximum permissible vertical
coupling load (75 kg) 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.
Rear axle load The permissible axle loads (see
identification plate or vehicle
documents) must not be exceeded.
Page 130 of 187
128Vehicle careCaution
It is the owner's responsibility to
maintain the proper level of an
appropriate quality oil in the
engine.
Insert dipstick to the stop on the
handle and make half a turn.
When the engine oil level has
dropped to the MIN mark, top up
engine oil.
We recommend the use of the same
grade of engine oil that was used at
last change.
The engine oil level must not exceed
the MAX mark on the dipstick.
Caution
Overfilled engine oil must be
drained or suctioned out.
Capacities 3 173.
Fit the cap on straight and tighten it.
Engine coolant
The coolant provides freeze
protection down to approx. -28 °C. In
northern countries with very low
temperatures, the factory filled
coolant provides frost protection
down to approx. -37°C.Caution
Only use approved antifreeze.
Coolant level
Caution
Too low a coolant level can cause engine damage.
Page 140 of 187
138Vehicle care
2.Prise the lamp assembly out at the
points illustrated.
3. Renew bulb, ensuring it engages correctly.
4. Reinstall lamp assembly.
Instrument panel
illumination Have bulbs replaced by a workshop.Electrical system
Fuses
Data on the replacement fuse must
match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
■ on the right of the engine compartment, next to the battery
■ behind a cover on the lower part of the instrument panel, on the driver'sside
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised by its
melted wire. Do not replace the fuse
until the cause of the fault has been
remedied.
Some functions are protected by
several fuses.
Fuses may also be inserted without existence of a function.
Fuse extractor
Use a fuse extractor to remove fuses.
Page 145 of 187

Vehicle care143Tyre designationsE.g. 215/60 R 16 95 H215=Tyre width, mm60=Cross-section ratio (tyre
height to tyre width), %R=Belt type: RadialRF=Type: RunFlatC=Cargo or commercial use16=Wheel diameter, inches95=Load index e.g. 95 is
equivalent to 690 kgH=Speed code letter
Speed code letter:
Q=up to 100 mphS=up to 112 mphT=up to 118 mphH=up to 130 mphV=up to 150 mphW=up to 168 mph
Tyre pressure
Check the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel.
Unscrew the valve cap.
Tyre pressure 3 174.
The tyre pressure data refers to cold
tyres. It applies to summer and winter tyres.
Always inflate the spare tyre to the
pressure specified for full load.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and fuel economy and will increase tyre
wear.
The driver is responsible for correct
adjustment of tyre pressures.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
Tread depth
Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm (4 mm for winter tyres).
For safety reasons, it is
recommended that the tread depth of
the tyres on one axle should not vary
by more than 2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
indicators (TWI). Their position is
indicated by markings on the
sidewall.
If there is more wear at the front than
the rear, swap round front wheels and
rear wheels periodically. Ensure that
the direction of rotation of the wheels
is the same as before.
Page 146 of 187

144Vehicle care
Tyres age, even if they are not used.
We recommend tyre replacement
every 6 years.
Changing tyre and wheel
size
If tyres of a different size than those
fitted at the factory are used, it may be necessary to reprogramme the
speedometer as well as the nominal
tyre pressure and make other vehicle modifications.
After converting to a different tyre
size, have the label with tyre
pressures replaced.9 Warning
Use of unsuitable tyres or wheels
may lead to accidents and will
invalidate the vehicle type
approval.
Wheel covers
Wheel covers and tyres that are
factory approved for the respective
vehicle and comply with all of the
relevant wheel and tyre combination requirements must be used.
If the wheel covers and tyres used are
not factory approved, the tyres must
not have a rim protection ridge.
Wheel covers must not impair brake
cooling.9 Warning
Use of unsuitable tyres or wheel
covers could lead to sudden
pressure loss and thereby
accidents.
Tyre chains
Tyre chains are only permitted on the
front wheels.
Always use fine mesh chains that add no more than 10 mm to the tyre tread
and the inboard sides (including chain lock).
Do not exceed 30 mph when tyre
chains are fitted.
9 Warning
Damage may lead to tyre blowout.