Page 126 of 201

124Driving and operatingSwitch off engine if stopping for a
lengthy period, e.g. in traffic jams.
Engine braking
Automatic mode
When driving downhill, the manual
transmission automated does not
shift into higher gears until a fairly
high engine speed has been reached. It shifts down in good time when
braking.
Manual mode
To utilise the engine braking effect, select a lower gear in good time when
driving downhill.
Rocking the vehicle Rocking the vehicle is only
permissible if the vehicle is stuck in
sand, mud, snow or a hole. Move the
selector lever between R and A/M (or
between + and -) in a repeat pattern,
while applying light pressure to the
accelerator pedal. Do not race the
engine and avoid sudden
acceleration.Parking
Apply the parking brake. The most recently engaged gear (see
transmission display) remains
engaged.Caution
Do not leave the vehicle with the
transmission in position N.
When the ignition is switched on, a
warning chime will sound when the
vehicle is parked if the transmission is still in N.
When the ignition is switched off, the transmission no longer responds to
movement of the selector lever.
Manual mode If engine speed is too low, the
transmission automatically shifts to a
lower gear.
In manual mode, no automatic
shifting to a higher gear takes place
at high engine revolutions. If engine
speed is too high, the transmission
only switches to a higher gear via
kickdown 3 124.
When gearshifting is recommended
to improve fuel economy, control
indicator [ or Ò illuminates in the
Driver Information Centre 3 85.
Electronic driving programmes
Eco mode E
When automatic mode is engaged,
the Eco mode can be selected to
reduce fuel consumption.
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Driving and operating129Deactivation
ASR can be switched off when
spinning of drive wheels is required:
press ASR OFF briefly.
LED in button illuminates and,
depending on version, a
corresponding message, e.g. ASR
disconnect , may also be displayed in
the Driver Information Centre 3 90.
ASR is reactivated by pressing
ASR OFF 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
R will illuminate in the instrument
cluster. Depending on version, a
corresponding message, e.g. ESP
unavailable , may also appear in the
Driver Information Centre 3 90.
Have the cause of the fault remedied by a workshop.
Control indicator R 3 85.
Electronic Stability Control
Electronic Stability Control (ESC)
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.
ESC is operational after each engine
start as soon as control indicator R
extinguishes.
When ESC operates, R flashes.
The ESC system is automatically
activated when the vehicle is started
and cannot be deactivated.
9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Page 133 of 201

Driving and operating131Turn end of lever to the ON position;
control indicator m 3 90 illuminates in
the instrument cluster. Depending on
version, a corresponding message,
e.g. Cruise Control on , may also be
displayed in the Driver Information
Centre 3 90.
Activation Accelerate to the desired speed and
push lever upwards ( +); the current
speed is stored and maintained.
Accelerator pedal can be released.
Vehicle speed can be increased by
depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Increase speed
With cruise control active, push lever
upwards ( +) or briefly push lever
upwards ( +) repeatedly: speed
increases continuously or in small
increments.Alternatively accelerate to the desired speed 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. 30 km/h
● the brake pedal is depressed
● the clutch pedal is depressed
● the traction control system/Anti- Slip Regulator (ASR) or
Electronic Stability Control (ESC)
is operating
● the antilock brake system (ABS) is operating
Resume stored speed
Press = at a speed above 30 km/h.
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.
Parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the parking assist system.
The parking assist makes parking
easier by measuring the distance between the vehicle and obstacles,
and giving acoustic signals.
Page 137 of 201

Driving and operating135Fuel selector
Pressing Y in the centre console
switches between petrol and natural
gas operation. The LED 1 status
shows the current operating mode.
1 off:natural gas
operation1 illuminates:petrol operation
As soon as the natural gas tanks are
empty, petrol operation is
automatically engaged. Control
indicator Y illuminates in the Driver
Information Centre 3 90 until the
ignition is switched off.
When switching automatically
between petrol or gas operation, a
brief delay of engine tractive power
may be noticeable.
Every six months run the petrol tank
down until control indicator §
illuminates and then refuel. This is
necessary to maintain fuel quality as
well as system function necessary for
petrol operation.
Fill the tank completely at regular
intervals to prevent corrosion in the
tank.
Refuelling
Fuel filler flap is located at left rear
side of vehicle.9 Danger
Before refuelling, switch off engine
and any external heaters with
combustion chambers. Switch off
any mobile phones.
Follow the operating and safety
instructions of the filling station
when refuelling.
9 Danger
Fuel is flammable and explosive.
No smoking. No naked flames or
sparks.
If you can smell fuel in your
vehicle, have the cause of this
remedied immediately by a
workshop.
Caution
In case of misfuelling, do not
switch on ignition.
Release the fuel filler flap by pulling
the flap by hand.
Insert ignition key into fuel filler cap
and turn anticlockwise to unlock.
To remove fuel filler cap, rotate
anticlockwise.
Caution
To avoid damage, do not attempt
to operate the sliding side door
when the fuel filler flap is open.
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136Driving and operatingNote
Depending on model, the sliding
side door may be fitted with a safety system that prevents the door from
being opened fully when the fuel
filler flap is open.
Sliding side door 3 26.
The fuel filler cap can be retained in
the bracket on the fuel filler flap.
To refuel, fully insert the pump nozzle
and switch it on.
After automatic cut-off, the tank can be topped up by operating the pump
nozzle a maximum of two more times.
Caution
Wipe off any overflowing fuel
immediately.
To close, replace fuel filler cap and
turn clockwise.
Insert ignition key into fuel filler cap
and turn clockwise to lock, then
remove key.
Close the fuel filler flap.
Natural gas refuelling
Open the fuel filler flap.
9 Warning
Refuel only with a maximum
output pressure of 250 bar. Use
only temperature compensated
filling stations.
The refuelling procedure must be
completed, i.e. the filler neck must be vented.
The capacity of the natural gas tank
depends on outside temperature,
filling pressure and type of refuelling
system.
Close the fuel filler flap after
refuelling.
Terms for " natural gas vehicles "
abroad:
GermanErdgasfahrzeugeEnglishNGVs = Natural Gas Vehi‐
clesFrenchVéhicules au gaz naturel –
or – Véhicules GNVItalianMetano auto
Page 148 of 201

146Vehicle careOnly use high-performance brake
fluid approved for the vehicle.
Brake and clutch fluid 3 177.
Vehicle battery
The vehicle battery is located in the
engine compartment.
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the vehicle battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to vehicle battery
discharge. Disconnect the clamp from
the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Battery discharge protection 3 105.
Replacing the vehicle battery Note
Any deviation from the instructions
given in this paragraph may lead to
a temporary deactivation of the stop-
start system.
In vehicles with stop-start system,
ensure the correct battery is used
when replacing the vehicle battery.
We recommend that you have the
vehicle battery replaced by a
workshop.
Stop-start system 3 116.
Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed
14.6 volts when using a battery
charger. Otherwise the vehicle
battery might be damaged.
9 Danger
Ensure adequate ventilation when
charging the battery. There is a
risk of explosion if gases
generated during charging are
allowed to accumulate!
Jump starting 3 169.
Page 150 of 201
148Vehicle careWiper blade on tailgate
Lift wiper arm, press retaining clips to
detach wiper blade.
Attach the wiper blade to the wiper
arm and push until it engages.
Lower wiper arm carefully.
Bulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base! Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Bulb check
After a bulb replacement, switch on
the ignition, operate and check the
lights.Halogen headlights
Headlights have separate systems for low beam/sidelight 1 (outer bulb),
high beam/daytime running light 2
(inner bulb).
To access bulbs, pull off protective
covers.
Low beam 1. Remove protective cover.
2. Detach connector from bulb.
3. Disengage wire clip and remove bulb from reflector.
Page 153 of 201
Vehicle care151
4.Unscrew the four retaining screws
using a screwdriver. Turn bulb
holder for reverse light
anticlockwise and replace bulb.
5. Remove bulb holder and seal from lamp assembly.
6. Push bulb into socket slightly, rotate anticlockwise, remove and
renew bulb.Brake light ( 1)
Turn signal light ( 2)
Tail light ( 3)
Tail light/fog light ( 4)
7. Install seal on bulb holder ensuring it is fitted correctly.
Install bulb holder in lamp
assembly ensuring that it
engages correctly. Tighten the
four retaining screws using a
screwdriver.
8. Install reverse light bulb holder and turn clockwise to tighten.
9. Engage connector plug.
10. Insert lamp assembly in body, ensuring correct positioning.
Tighten the three retaining
screws.
11. Switch on ignition, operate and check all lights.
Side turn signal lights
Have bulbs replaced by a workshop.
Centre high-mounted brakelight
Have bulbs replaced by a workshop.