For this reason, deactivate ASR only briefly
and when absolutely necessary.
When ESP®is intervening and thedwarning
lamp in the instrument cluster is flashing, leave
ASR on. In this case, only depress the acceler-
ator pedal as far as required when pulling away.
XPress the àbutton.
If ASR is deactivated, the dwarning lamp
in the instrument cluster lights up.
ASR is automatically activated when the engine
is started.
It may be best to deactivate ASR briefly in the
following situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
If you deactivate ASR:
Rengine torque is not limited and the drive
wheels are able to spin. The spinning wheels
will then achieve a cutting effect for better
traction.
Rtraction control remains active through brake
intervention. If a drive wheel attains its tire
traction limit because one side of the road is
slippery, for example, that wheel is braked.
The traction is then increased in this situation.
Ractive brake intervention by ESP®to increase
driving stability remains active. The d
warning lamp in the instrument cluster
flashes when ESP
®is intervening.
BAS (Brake Assist System)
GWARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Vehicles without steering wheel buttons: if the
BAS driving safety system is malfunctioning,
the : warning lamp lights up while the
engine is running (
Ypage 195).
BAS operates in emergency braking situations.
If you depress the brake quickly, BAS automat-
ically increases the brake pressure, thereby
reducing the stopping distance.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.
EBD (electronic brake force distribu-
tion)
GWARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
EBD monitors and controls the brake pressure
to the rear wheels. This enables EBD to improve
handling during braking.
Observe the information on warning and indica-
tor lamps (
Ypage 195).
ESP®(Electronic Stability Program)
Important safety notes
GWARNING
If ESP
®is malfunctioning it will not provide
any vehicle stabilization. There is an increased
risk of skidding or of an accident.
Exercise caution when continuing to drive.
Have ESP
®checked at a qualified specialist
workshop.
!Do not run the vehicle on a roller dynamom-
eter (e.g. for performance tests). If you must
operate the vehicle on a roller dynamometer,
54Driving safety systems
Safety
Problems with the key/remote control
ProblemPossible causes/consequences andMSolutions
It is no longer possible to
lock the vehicle using
the remote control.
The turn signals do not
flash when the vehicle is
locked.The doors are not closed properly.
XClose the doors properly and lock the vehicle again.
The central locking system has malfunctioned.
XLock the vehicle using the folding key (Ypage 59).
XHave the central locking system checked as soon as possible at a
qualified specialist workshop.
It is no longer possible to
lock or unlock the vehi-
cle using the remote
control.The key battery is weak or discharged.
XPoint the remote control at the driver's door handle from very close
range and press the %or& button.
If this does not work:
XReplace the key battery (Ypage 61).
or
XLock the vehicle using the folding key (Ypage 59).
The remote control is faulty.
XLock the vehicle using the folding key (Ypage 59).
XHave the key checked at a qualified specialist workshop.
The key cannot be
turned in the ignition
lock.The steering lock has jammed mechanically.
XRemove the key and insert it again into the ignition lock. Turn the
steering wheel from side to side while doing so.
The engine cannot be
started using the key.The on-board voltage is too low.
XSwitch off all non-essential consumers, such as interior lighting, and
try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 232).
or
XJump-start the vehicle (Ypage 242).
or
XConsult a qualified specialist workshop.
You have lost a key.XHave the key deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the mechanical locks replaced.
Key63
Opening and closing
Z
Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print. Country-specific variations are possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 26).
Exterior lighting
Important safety notes
For reasons of safety, we recommend that you
drive with the lights switched on even during the
daytime. There may be differences in operation
due to legal requirements and voluntary recom-
mendations in some countries.
Bulb failure indicator
The bulb failure indicator is only an aid. You are
responsible for the proper functioning of the
vehicle lighting. Insufficient or non-functioning
vehicle lighting puts the operating safety of the
vehicle at risk.
For this reason, check the condition and func-
tion of your vehicle's lighting system and, if nec-
essary, that of the trailer before each journey.
The bulb failure indicator monitors all of the
exterior lighting lamps, except the perimeter
lamp and the trailer lighting. If a bulb fails, either
the b(
Ypage 33) indicator lamp lights up, or
you will see a corresponding message in the
display (
Ypage 185).
iDepending on the equipment, the bulb fail-
ure indicator can fail for all lamps with the
exception of the turn signal lamps.
Light switch
Operation
1 ÃAutomatic headlamp mode/daytime
running lamps
2$Lights off
3TParking lamps, license plate and
instrument lighting
4LLow-beam/high-beam headlamps
5NFog lamps
6RRear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to $orÃ.
or
XIf the rear fog lamp is switched on: press the
light switch in to the stop.
The turn signals, high-beam headlamps and the
high-beam flasher are operated using the com-
bination switch (
Ypage 81).
Low-beam headlamps
XTo switch on: turn the key to position 2in the
ignition lock or start the engine.
XTurn the light switch to position L.
The L indicator lamp in the instrument
cluster lights up.
Daytime running lamps
You can activate/deactivate the daytime run-
ning lamps function using the on-board com-
puter.
This is not possible in countries where daytime
running lamps are a legal requirement.
Exterior lighting79
Lights and windshield wipers
Changing bulbs
Important safety notes
GDANGER
Xenon bulbs carry a high voltage. You can get an electric shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Always have work on
the Xenon bulbs carried out at a qualified spe-
cialist workshop.
GWARNING
Bulbs, lamps and connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
!Make sure the bulbs are always securely
installed.
If your vehicle is equipped with Bi-Xenon bulbs,
you can recognize this by the following: the cone
of light from the Xenon bulbs moves from the
top to the bottom and back again when you start
the engine. For this to be observed, the low-
beam headlamps must be switched on before
starting the engine.
The bulbs and lamps are an essential compo-
nent of vehicle safety. You must therefore make
sure that these function correctly at all times.
Have the headlamp setting checked regularly.
RAlways switch off the vehicle's lighting sys-
tem before changing a bulb.
This will prevent a short circuit.
RDo not touch the glass tube of new bulbs with your bare hands. Always use a clean, lint-free
cloth or only touch the base of the bulb when
installing.
Even minor contamination can burn into the
glass surface and reduce the service life of the
bulbs.
RDo not use a bulb that has been dropped or
that has scratches on its glass tube.
The bulb could explode.
ROnly use bulbs in closed lamps which have
been designed for this purpose.
ROnly use spare bulbs of the same type and
with the prescribed voltage
RProtect the bulbs from moisture when in use.
If the new bulb still does not light up, consult a
qualified specialist workshop.
RHave the LEDs and bulbs of the following
lamps changed at a qualified specialist work-
shop:
-the additional turn signals in the exterior
mirrors
-the high-mounted brake lamp
-LED daytime running lamps (Bi-Xenon
headlamps)
-Bi-Xenon lamps (Bi-Xenon headlamps)
-front fog lamps
If you require assistance changing bulbs, con-
sult a qualified specialist workshop.
Front bulbs
Overview of bulb replacement – bulb
types
The following bulbs can be replaced. Bulb types can be found in the legend.
Vehicle swit hhalogen headlamps
:
Turn signal: PY21W
;Daytime running lamps: W21W
=Low-beam headlamps: H7 55W
?High-beam headlamps: H7 55W
AParking lamps/standing lamps: W5W
86Changing bulbs
Lights and windshield wipers
Outside tempera-
tureEngine runtime
Above 32 ‡ (0 †)at least 10 minutes
32 ‡ (0 †) to 14 ‡
(Ò10 †)at least 15 minutes
Below 14 ‡ (Ò10 †)at least 20 minutes
Before switching on
XCheck the fuel level and top up if necessary.
The auxiliary heating is operated directly
using the vehicle's fuel. The tank must be at
least a quarter full to ensure that the auxiliary
heating functions.
XSwitch on climate control (Ypage 101).
XSet the temperature control to the desired
temperature (Ypage 102).
XSet the air distribution as required
(Ypage 102).
XOpen the center (Ypage 105) and side air
vents (Ypage 106) and set them to the middle
position.
iThe auxiliary heating automatically switches
to heater booster mode after the engine is
started.
Operating with the button (control
panel)
iSwitch the heater booster function on or off
with the ¢button (Ypage 111).
XTo activate the auxiliary heating system:
press and hold the upper section of the y
switch for longer than 2 seconds.
The red indicator lamp in the button lights up.
The auxiliary heating heats or ventilates the interior to the temperature that you have set.
The blower switches to the first level.
XTo deactivate the auxiliary heating:
press
the upper section of the yswitch.
or
XTurn the key in the ignition lock to position 0.
The red indicator lamp in the button goes out.
The auxiliary heating operates for another
2 minutes and then switches off automati-
cally.
Selecting a switch-on time
Important information
You can use the on-board computer to define up
to three switch-on times, one of which can be
selected.
The yellow indicator lamp in the ybutton
goes out after 30 minutes, if you:
Rhave selected the switch-on time and
Rturn the key to position 0in the ignition lock
On-board computer without steering
wheel buttons
XTurn the key to position 2in the ignition lock.
XPress the ybutton.
The y symbol flashes in the display.
or
XPress the 4menu button on the instrument
cluster repeatedly until the ysymbol
flashes in the display.
XUse the forg buttons on the instrument
cluster to select the switch-on time 1to3.
The switch-on time selected is displayed.
XWait 10 seconds for the standard display to
appear.
The switch-on time is selected. The yellow
indicator lamp in the ybutton lights up.
If you do not preselect a switch-on time, and
--:--
is shown in the display, this means that
the automatic switch-on mode is switched
off. The yellow indicator lamp in the y
button goes out.
108Operating the auxiliary heating system
Climate control
On vehicles with a battery main switch, you must
first switch on the power supply (Ypage 118).
iTo unlock the steering, move the steering
wheel slightly while turning the key to position
1.
Preparing for a journey
Visual check of the vehicle exterior
XIn particular, check the following components
on the vehicle, and on the trailer as necessary:
Rlicense plates, vehicle lighting, turn signals,
brake lamps and wiper blades for dirt and
damage
Rtires and wheels for firm seating, correct
tire pressure and general condition
Rtrailer tow hitch for play and security
The trailer coupling is one of the most
important vehicle parts with regard to road
safety. The separate instructions issued by
the manufacturer pertaining to operation,
care and maintenance should be observed.
Rthat contour markings on attachments and
bodies are in good condition
XRectify any noticeable defects before com-
mencing the journey.
Checks in the vehicle
Emergency equipment and first-aid kit
XCheck the equipment to make sure that it is
accessible, complete and ready for use.
The first aid and breakdown assistance equip-
ment is in the front door stowage compartments
and behind the driver's seat.
Vehicle lighting
XTurn the key to position 2in the ignition lock.
XCheck the lighting system with the aid of a
second person.
XReplace defective bulbs (Ypage 86).
Before driving off
GWARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardizes the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
When using floormats or carpets, make sure
that they are properly secured so that they do not slip or obstruct the pedals. Do not place
several floormats or carpets on top of one
another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
XSecure the load as per the loading guidelines
(Ypage 212).
XStow luggage items securely. Secure the load
as per the loading guidelines (Ypage 212).
XMake sure that the floormats and carpets are
properly secured so that they cannot slip and
obstruct the pedals.
XClose all doors.
Starting the engine
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
!Do not depress the accelerator pedal when
starting the engine.
XBefore starting the engine, make sure that:
120Driving
Driving and parking
Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start.
The starter motor can be
heard.There is air in the fuel system.
XTurn the key back to position0in the ignition lock before attempting
to start the engine again.
XStart the engine again.
Please bear in mind that lengthy and frequent starting attempts will drain the battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start.
The starter motor can be
heard. The reserve fuel
warning lamp is lit and
the fuel gage is at 0.The fuel tank has been run dry.
XRefuel the vehicle.
If you drive until the fuel tank is completely empty, air may get into the
fuel system. If the engine does not start after refueling, bleed the fuel
system as follows:
XTurn the key to position 2in the ignition for approximately
10 seconds.
XStart the engine continuously for a maximum of 60 seconds.
If the engine does not start:
XWait approximately 2 minutes.
XRestart the engine continuously for a maximum of 60 seconds.
XIf the engine still fails to start, do not continue trying to start it.
XConsult a qualified specialist workshop.
The vehicle cannot be
driven at a speed
exceeding 5 mph
(8 km/h).
The yellow ;Check
Engine lamp and the yel-
low å DEF indicator
lamp
2light up.
The exhaust gas aftertreatment system is defective or an emissions-
relevant malfunction has occurred.
This malfunction or defect can damage the exhaust gas aftertreat-
ment.
XObserve the messages in the display:
Ron vehicles without steering-wheel buttons (Ypage 178)
Ron vehicles with steering wheel buttons (Ypage 187).
The engine does not
start.
The starter motor cannot
be heard.The battery isolating switch is switched off.
XSwitch on the power supply (Ypage 118).
2Only vehicles without steering-wheel buttons.
Driving123
Driving and parking
Z
Always park your vehicle safely and according to
legal requirements and secure it against rolling
away.
To ensure that the vehicle is properly secured
against rolling away unintentionally:
Rthe parking brake must be firmly applied
Rthe selector lever must be in positionPand
the key must be removed from the ignition
lock
Ron steep uphill or downhill gradients, the front
wheels must be turned towards the curb
Rthe rear axle must be secured, e.g. with a
wheel chock, on steep uphill or downhill gra-
dients
Use the wheel chock (
Ypage 132) to do so.
If you leave the vehicle parked for more than
three weeks:
Rconnect the batteries to a trickle charger or
Rdisconnect the vehicle's starter battery or
Rswitch off the electrical system using the bat-
tery main switch (Ypage 118) and
Rdisconnect the vehicle's auxiliary battery
Otherwise, you need to check the battery's con-
dition of charge every three weeks, since
standby power consumption can drain the bat-
tery. If the battery voltage is lower than 12.2 V,
the battery must be charged. Otherwise, the
battery may be damaged by exhaustive dis-
charging.
Be sure to observe the notes on disconnecting
and chargi ng th
e batteries under "Bat-
tery“ (Ypage 227). You can obtain information
about trickle chargers from a qualified specialist
workshop.
Parking brake
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If you must brake the vehicle with the parking brake, the braking distance is considerably
longer and the wheels could lock. There is an
increased danger of skidding and accidents.
Only use the parking brake to brake the vehi-
cle when the service brake is faulty. Do not
apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again.
The brake lamps are not illuminated when you
brake the vehicle using the parking brake.
As a rule, you may only apply the parking brake
when the vehicle is stationary.
XTo apply the parking brake: pull brake
lever :up as far as the last possible detent.
The c warning lamp in the instrument
cluster lights up if the engine is running.
iOn vehicles with a folding brake lever, you
can then press lever :down to the stop.
XTo release the parking brake: on vehicles
with a folding brake lever, first pull brake
lever :up to the stop.
XRaise brake lever :slightly and press
release knob ;.
XGuide brake lever :down to the stop.
The c indicator lamp in the instrument
cluster goes out.
Parking131
Driving an d parking
Z