
X
Turn headlamp range control 0043to the cor-
responding position. The road ahead
should be lit up for 40 mto 100 mand the
low-beam headlamps should not cause
glare to oncoming traffic.
Select position 005Aif the vehicle is unladen. Cornering light function (vehicles
with Bi-Xenon headlamps)
The cornering lamps improve the illumination
of the road over a wide angle in the direction
you are turning, enabling better visibility in
tight bends, for example.
The cornering light function switches on
automatically, if:
R you are traveling at a speed of less than
25 mph (40 km/h) and you switch on a turn
signal or turn the steering wheel.
R you are traveling at a speeds of between
25 mph (40 km/h) and 43 mph (70 km/h)
and turn the steering wheel.
The cornering lamp may remain lit for a short
time, but is automatically switched off after
no more than 3 minute s.
i If reverse gear is engaged the lamp on the
opposite side of the vehicle switches on
instead. Hazard warning lamps
G
WARNING
The rear exterior light will be covered if you:
R open the rear doors by 90°
R open the rear dropside.
The vehicle will then be difficult for other road
users to see or will not be seen by them at all,
particularly if it is dark or visibility is poor.
There is a risk of an accident.
You should therefore ensure in this and simi-
lar situations that the vehicle is visible from
the rear in accordance with the relevant national regulations, by using the warning tri-
angle, for instance. Hazard warning lamp switch
X
To switch on/off: press the002Fhazard
warning lamp switch.
If you have indicated a turn while the hazard
warning lamps are switched on, only the turn
signal lamps on the side of the vehicle
selected will light up.
The hazard warning lamps switch on auto-
matically if:
R an air bag is deployed.
R you brake sharply and bring the vehicle to
a halt from a speed of more than 45 mph
(70 km/h).
If the hazard warning lamps have been
switched on automatically, press the 002F
hazard warning lamp switch to switch them
off.
i The hazard warning lamps work even
when the ignition is switched off. Headlamp cleaning system
The headlamps are cleaned automatically
with a high-pressure water jet if the "Wipe
with washer fluid" function is activated
(Y page 107) while the low-beam headlamps
are on and the engine is running.
Information on checking the washer fluid
level can be found in the "Maintenance and
care" (Y page 257) section. 96
Exterior lightingLights and windshield wipers

Active light function
The active light function is a system that
moves the headlamps according to the steer-
ing movements of the front wheels. In this
way, relevant areas will be illuminated to a
greater extent while driving. This allows you
to recognize pedestrians, cyclists and ani-
mals.
Active: when the lights are switched on. Highbeam Assist
General notes You can use this function to set the head-
lamps to change between high beam and low
beam automatically. The system recognizes
vehicles with their lights on, either approach-
ing from the opposite direction or traveling in
front of your vehicle, and consequently
switches the headlamps from high beam to
low beam.
Once the system no longer detects any other
vehicles, it reactivates the high-beam head-
lamps.
The system's optical sensor is located behind
the windshield near the overhead control
panel.
Important safety notes G
WARNING
Highbeam Assist does not recognize road
users:
R who have no lights, e.g. pedestrians
R who have poor lighting, e.g. cyclists
R whose lighting is blocked, e.g. by a barrier
In very rare cases, Highbeam Assist may fail
to recognize other road users who have lights,
or may recognize them too late. In this or sim-
ilar situations, the automatic high-beam head-
lamps will not be deactivated or will be acti-
vated regardless. There is a risk of an acci-
dent. Always carefully observe the traffic conditions
and switch off the high-beam headlamps in
good time.
Highbeam Assist cannot take into account
road, weather or traffic conditions. Highbeam
Assist is only an aid. You are responsible for
adjusting the vehicle's lighting to the prevail-
ing light, visibility and traffic conditions.
In particular, the detection of obstacles can
be restricted if there is:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or anything else cover-
ing the sensors
Activating/deactivating Highbeam
Assist X
To activate: switch on the Highbeam
Assist function using the on-board com-
puter (Y page 194).
X Turn the light switch to the 0058position.
X Press the combination switch beyond the
pressure point in the direction of arrow 0043
(Y page 95).
Highbeam Assist is active.
The or
00CE indicator lamp in the
multifunction display lights up when it is
dark and the light sensor activates the low-
beam headlamps.
If you are driving at speeds above approx-
imately 22 mph (35 km/h) and no other
road users have been detected:
The high-beam headlamps are switched on
automatically. The 0057indicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below approx-
imately 19 mph (30 km/h) other road users
are recognized or the roads are adequately
lit:
The high-beam headlamps are switched off
automatically. The 0057indicator lamp in
the instrument cluster goes out. The 00CE Exterior lighting
97Lights and windshield wipers Z

Motion detector
G
WARNING
The motion detector sends the invisible infra-
red radiation emitted by LEDs (light emitting
diodes).
These LEDs are classified as class 1M lasers
and can damage the retina if you:
R look directly into the unfiltered laser beam
of the motion detector for an extended
period
R look directly into the laser beam of the
motion detector using optical instruments,
e.g. eyeglasses or a magnifying glass.
There is a risk of injury.
Never look directly into the motion detector.
The cargo compartment lighting is also
switched on by the motion detector in the
cargo compartment of Cargo Vans equipped
with this feature.
If the motion detector detects a movement in
the cargo compartment when the vehicle is
stationary, the cargo compartment lighting
switches on for approximately two minutes.
The cargo compartment lighting can be
switched on by the motion detector within
four seconds if:
R the rear interior light switch (Y page 99) is
set to automatic control.
R the vehicle is stationary, the parking brake
is applied and the brake pedal is not being
depressed
Or
R the selector lever is in position Pon vehi-
cles with automatic transmission and the
brake pedal is not being depressed and
R the vehicle has not been locked from the
outside using the key
The motion detector switches off automati-
cally if no change is detected in the vehicle
for several hours, e.g. if a door is opened, if
the ignition key is turned, etc. This prevents
the battery from becoming discharged. Changing bulbs
Important safety notes
G
DANGER
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. G
WARNING
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.
R Always switch off the vehicle's lighting sys-
tem before changing a bulb.
This will prevent a short circuit.
R Do 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. 100
Changing bulbsLights and windshield wipers

The detent positions of the combination
switch correspond to the following wiper
speeds:
0W indshield wipers off
II ntermittent wipe
II Normal wipe
III Rapid wipe
i Canada only:
If the windshield wipers are switched on
and you stop the vehicle, the windshield
wiper speed is reduced. For example, if you
have selected level IIand stop the vehicle,
wiping continues with intermittent wipe
while the vehicle is stationary. If intermit-
tent wipe is selected, the intervals become
longer.
Vehicles with a rain and light sensor:
you can use level Ias the universal setting.
The rain and light sensor sets the appropri-
ate wiping frequency automatically,
according to the intensity of the rain. When
you stop the vehicle, levels IIIand IIare
switched down to level Iautomatically.
The windshield wiper will return to the orig-
inal level when you drive faster than
5 mph (8 km/h).
You can adjust the sensitivity of the rain and
light sensor using the on-board computer
(Y page 196).
Information on checking the washer fluid
level can be found in the "Maintenance and
care" (Y page 257) section. Switching the rear window wiper on/
off Combination switch
0043
00C5 Rear window wiper switch
0048 00E2 To wipe with washer fluid
0049 ITo switch on intermittent wiping
004A 0To switch off intermittent wiping
004B 00E2 To wipe with washer fluid
X Turn the key to position 1or 2in the ignition
lock.
X Turn switch 0043to the corresponding posi-
tion
The rear window wiper switches on automat-
ically if you engage reverse gear and the wind-
shield wipers are on. Replacing the wiper blades
G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm. There is a risk
of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! Never open the hood if a windshield wiper
arm has been folded away from the wind-
shield.
Never fold a windshield wiper arm without
a wiper blade back onto the windshield/
rear window. 108
Windshield wipersLights and
windshield wipers

If the
0084 symbol in the status bar is shown:
X Press the 00CFor00DB button until the
off
off message in the display panel is shown.
X Press the 0070button.
The preselection time is deactivated. The
time is shown.
Setting the heating level You can set the heating level to a range
between 10 and 30.
The heating level corresponds to a preselec-
tion temperature for the vehicle interior. This
is a guide value and may, depending on the
outside temperature, differ from the actual
vehicle interior temperature.
X Press the 00CFor00DB button until the
00D1 symbol in the menu bar flashes.
X Press the 0070button.
The heating level display flashes.
X Using the 00CFand00DB buttons, set the
desired heating level to a range between 10
and 30.
X Press the 0070button.
The heating level is set and the 0084sym-
bol appears. Switching the heater booster function
on/off Vehicles with auxiliary heating Vehicles with heater booster function
At outside temperatures of up to 39 ‡
(4†)
the fuel-fired heater booster system heats the
vehicle interior as quickly as possible when
the engine is running.
The auxiliary heating automatically switches
to heater booster mode after the engine is
started.
At an outside temperature above 39 ‡ (4†)
the auxiliary heating system and the heater
booster function switch off automatically.
If you switch off the engine without switching
off the heater booster function, the system
will be switched on the next time the engine
is started (memory function).
i Switch the auxiliary heating on or off with
the 0084 button (Y page 124).
X To switch on/off: press the006Aswitch.
If the indicator lamp in the button lights up,
the heater booster function is switched on.
After switching off, the auxiliary heating oper-
ates for about another 2 minutes and then
switches off automatically. Replacing the remote control battery
G
WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately. 130
Operating the auxiliary heating systemClimate control

i
To unlock the steering, move the steering
wheel slightly while turning the key to posi-
tion 1. Preparing for a journey
Visual check of the vehicle exterior X
In particular, check the following compo-
nents on the vehicle, and on the trailer as
necessary:
R license plates, vehicle lighting, turn sig-
nals, brake lamps and wiper blades for
dirt and damage
R tires and wheels for firm seating, correct
tire pressure and general condition
R trailer tow hitch for play and security
i 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.
X Rectify any noticeable defects before com-
mencing the journey.
Checks in the vehicle Emergency equipment/first-aid kit
X Check 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 compart-
ments and behind the driver's seat.
Vehicle lighting
X Turn the key to position 2in the ignition
lock.
X Check the lighting system with the aid of a
second person.
X Replace defective bulbs (Y page 100). Before driving off
G
WARNING
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. G
WARNING
Unsuitable footwear can hinder correct usage
of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
X Secure the load as per the loading guide-
lines (Y page 242).
X Make sure that the floormats and carpets
are properly secured so that they cannot
slip and obstruct the pedals.
X Close all doors. Starting the engine
G
WARNING
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. 138
DrivingDriving and parking

X
Before starting the engine, make sure that:
R all the doors are closed.
R all the vehicle occupants are wearing
their seat belts correctly.
R the parking brake is applied.
i If you depress the brake pedal before
starting the engine, the pedal travel is short
and pedal resistance is high.
If you depress the brake pedal again after
starting the engine, pedal travel and resist-
ance will be back to normal again. Gearshift pattern
005D
Park position with parking lock
005E Reverse gear
005C Neutral
005B Drive
X Move the selector lever to position P.
The display in the instrument cluster shows
P:
R on vehicles with steering wheel buttons
(Y page 189)
R on vehicles without steering wheel but-
tons ( Ypage 184)
i You can also start the engine in neutral
N.
X Turn the key to position 2in the ignition
lock.
The 0028 preglow indicator lamp in the
instrument cluster lights up briefly.
X Once the 0028preglow indicator lamp goes
out, turn the key to position 3in the ignition
lock and release it as soon as the engine is
running. i
You can start the engine without preglow
when the engine is warm.
The preglow system is malfunctioning if the
0028 preglow indicator lamp lights up for
approximately 1 minute:
R after the ignition is switched on
R while the engine is running
At extremely low outside temperatures you
may then no longer be able to start the
engine. Have the malfunction rectified at a
qualified specialist workshop.
i Depending on the equipment installed,
the vehicle either automatically locks cen-
trally after switching on the ignition or after
pulling away. The locking knobs in the
doors drop down.
You can open the doors from the inside at
any time.
Automatic door locking can be deactivated
(Y page 71). Driving off
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor
R, the vehicle could pull away suddenly. There
is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate.
! Only shift into reverse gear Rwhen the
vehicle is stationary. Otherwise, you could
damage the transmission.
X Depress the brake pedal and keep it
depressed.
The selector lever lock is released.
X Move the selector lever to position Dor R.
On vehicles with a reverse warning feature,
when reverse gear is engaged a warning
tone sounds to alert other road users
(Y page 140). Driving
139Driving and parking Z

Problems with the engine
Problem Possible causes/consequences and
0050
0050Solutions The engine does not
start.
The starter motor can
be heard. There is air in the fuel system.
X
Turn the key back to position 0in the ignition lock before
attempting to start the engine again.
X Start 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:
X Consult 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.
X
Refuel 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:
X Turn the key to position 2in the ignition for approximately
10 seconds.
X Start the engine continuously for a maximum of 60 seconds.
If the engine does not start:
X Wait approximately 2 minutes.
X Restart the engine continuously for a maximum of 60 seconds.
X If the engine still fails start, do not continue trying to start it.
X Consult a qualified specialist workshop. The vehicle cannot be
driven at a speed
exceeding 5 mph
(8 km/h).
The yellow
00B9engine
diagnostic lamp and
the yellow 00E2DEF
indicator lamp 2
light
up. The exhaust gas aftertreatment is faulty, an emission-relevant
malfunction has occurred or the DEF reserve has been used up.
This malfunction or defect can damage the exhaust gas after-
treatment.
X
Observe the messages in the display:
R
on vehicles without steering-wheel buttons (Y page 202)
R on vehicles with steering-wheel buttons (Y page 213) and
(Y page 213). The engine does not
start.
The starter motor can-
not be heard. The battery isolating switch is switched off.
X
Switch on the power supply (Y page 136).2
Only vehicles without steering-wheel buttons. Driving
143Driving and parking Z