
Driving safet
ysystems Driving safety systems overview
In this section, you will find information about
the following driving safety systems:
R ABS ( Anti-lock BrakingSystem)
R BAS ( Brake Assist System)
R ASR (Acceleration SkidControl)
R ESP ®
(Electronic StabilityProgram)
R EBD ( Electronic Brake Force Distribution) Important safety notes
If you fail to adapt yourd riving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of accident nor
override the laws of physics. Driving safety
systems are merely aids designed to assist
driving. You are responsible for the distance
to the vehicle in front, for vehicle speed and
for braking in good time. Always adapt your
driving style to the prevailing road and
weather conditions and maintai nasufficient,
safe distance from other road users. Drive
carefully.
The driving safety systems described can only
attain their maximum effectiveness when
there is optimum contact between the tires
and the road can. Therefore pay special
attention to the information on tires, the
recommended minimum tire tread, etc., in
the "Wheels and tires" section (Y page 274).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow
chains. Only in this way will the driving safety
systems described in this section work as
effectively as possible. ABS (Anti-lock Braking System)
Important safety notes Note the section on 'Important safety notes'
(Y
page 56). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking
characteristics may be severely impaired.
Additionally, further driving safety systems
are deactivated. There is an increased danger
of skidding and accidents.
Drive on carefully. Have ABS checked
immediately at a qualified specialist
workshop.
If ABS is malfunctioning, other systems will
also fail, including driving safety systems.
Observe the information relating to the 000E
(Y page 210) warning lamp.
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the
vehicle when braking.
ABS acts from a speed of about 5 mph
(8 km/h) upwards, regardless of road surface
conditions. ABS works on slippery surfaces,
even when you only brake gently.
The yellow 000Ewarning lamp in the
instrument cluster lights up when the ignition
is switched on. The lamp goes out when the
engine starts running.
Braking X
If ABS intervenes: continue to depress the
brake pedal with force until the braking
situation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel
a pulsating in the brake pedal.
The pulsating brake pedal can be an
indication of hazardous road conditions and
functions as a reminder to take extra care
while driving. BAS (Brake AssistS
ystem)
Note the section on 'Important safety notes'
(Y page 56). 56
Driving safety systemsSafety

Daytime running lamp mode
You can activate/deactivate daytime running
lamp mode using the on-board computer.
This is no tpossible in countries where
daytime running lamp mode is a legal
requirement.
Daytime running lamp mode must be
activated using the on-board computer:
R Vehicles with steering wheel
buttons(Y page 187)
R Vehicles without steering wheel buttons
(Y page 179)
X To switch on: turn the light switch to the
000C position.
The low-beam headlamps, parking lamps
and license plate lamp are switched on
when the engine is running. The 0004
indicator lamp in the instrument cluster
lights up.
i USA only:
If you turn the light switch to the 000Bor
0004 position, the parking lamps or low-
beam headlamps are switched on. If you
turn the light switch to the 0007position,
daytime running lamp mode stays switched
on.
i Canada only:
If you turn the light switch to the 0004
position, the low-beam headlamps are
switched on. If you turn the light switch to
the 000B or0007 position, daytime running
lamp mode stays switched on.
Automatic headlamp mode G
WARNING
If the light switch is set to 000Band it is foggy,
snowing or there is poor visibility, the low-
beam headlamps will not come on
automatically. There is a risk of an accident.
In such situations, turn the light switch to
0004. Automatic headlamp mode is only a driving
aid. You are responsible for the vehicle
lighting at all times.
If it is dark or foggy, turn the light switch
quickly from
0007to0004.Y ou could
otherwise briefly interrupt operation of the
headlamps.
Depending on ambient light, the rain and light
sensor automatically switches on the parking
lamps, low-beam headlamps and the license
plate lamp. This excludes weather-related
impairments to visibility, such as snow, fog or
spray.
X To switch on automatic headlamp
mode: turn the light switch to 0007.
Key in position 1in the ignition lock: the
parking lamps are switched on or off
automatically depending on the ambient
light.
When the engine is running: depending on
the ambient light, the parking lamps and
the low-beam headlamps are switched on
or off automatically.
When the low-beam headlamps are
switched on, the 0004indicator lamp in the
instrument cluster lights up.
Fog lamp/rear fog lamp G
WARNING
If you suspect that driving conditions will be
foggy, turn the light switch to 0004before you
start your journey. Your vehicle may
otherwise not be visible and you could
endanger yourself and others. G
WARNING
In low ambient lighting or foggy conditions,
only switch from position 0007to0004 with
the vehicle at a standstill in a safe location.
Switching from 0007to0004 will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions may
result in an accident. Exterior lighting
91Lights and windshiel dwipers Z

signal lamps on the side of the vehicle
selected will light up.
The hazard warning lamps switch on
automatically 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 0011
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 103) 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 246) section. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the low-beam headlamps and
drive off.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Interior lighting
Switching the dashboard lighting on/
off
Overview Standard interior light
0008
Interior light switched on
0009 Interior light switched off
000A Automatic control system switched on Interior lights in the overhead control panel
0005 To switch the left-hand reading lamp on/
off
0006 To switch the right-hand reading lamp on/
off
0026 Right-hand reading lamp
0025 Interior light
0023 To switch the automatic control system
on/off
0024 To switch the interior light on/off
0018 Left-hand reading lamp
If you switch on the interior light or reading
lamp on the overhead control panel manually, 94
Interior lightingLights and windshield wipers

it switches off automatically after
20 minutes.
Automatic control
The interior light comes on if you:
R
unloc kthe vehicle
R open the driver's or the co-driver's door
R remove the key from the ignition lock
The interior light switches off again
automatically.
If a door is left open, the interior lighting
switches off after approximately 20 minutes. Switching the rear compartment
lighting on/off centrally (Passenger
Van) Rear compartmen
tlighting switch
0005 To switch on the rear compartment
lighting
0006 Automatic control
0026 To switch off the rear compartment
lighting
You can switch the rear compartmen tlighting
on/off centrally on Passenger Vans that are
equipped with convenience control.
There may also be a switch on the rear
compartmen tlights that allows you to switch
the mo n/off separately .Ifyou switch off rear
compartment lighting 0026, the rear
compartment light is switched off, regardless
of the position of its own switch. If you move the rear compartment lighting
switch to center position
0006, the automatic
control system is switched on. When you
open a door or unlock the vehicle, the rear
compartment lighting then goes on
automatically. Once the doors close, it
switches off automatically after 20 minutes.
If automatic control is switched on, the rear
compartment lighting goes on automatically
when you unlock the vehicle. Switching the rear/cargo
compartment lamp on/off
Interior light with switch (example: Cargo Van)
Interior light with switch (example: Passenger Van
with rear-compartment air conditioning)
0008
To switch on the interior lighting
0009 To switch off the interior lighting
000A Automatic control
For Cargo Vans and Passenger Vans without
convenience control, the switch for the
interior lighting is on the rear interior light in
the cargo compartment/vehicle interior. Interior lighting
95Lights and windshiel dwipers 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 possible. 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 (Y page 26). Overview of climate control systems
Important safety notes
Observe the recommended settings on the
following pages. Otherwise, the windows
could fog up.
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances from the air.
Climate control is only operational when the
engine is running. The system only functions
optimally when the side windows are closed.
i Ventilate the vehicle for a brief period
during warm weather. In order to cool the
vehicle more rapidly, switch climate control
to air-recirculation mode briefly. This will
speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out
pollen. Aclogged filter reduces the airflow
into the vehicle interior .For this reason,
you should always observe the interval for
replacing the filter, which is specified in the
Maintenance Booklet .As it depends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet. 108
Overview of climate control systemsClimate control

Control panel for the air-conditioning system
0005
Sets the temperature (Y page 113)
0021 Defrosts the windshield (Y page 114)
0006 Sets the airflow (Y page 114)
0026 Increases the airflow
0025 Reduces the airflow
0026 0022 Switches air-recirculation mode on/off (Y page 116)
0025 001F Switches the reheat function (window air dehumidification) on/of f(Ypage 114)
0023 Sets the air distribution (Y page 113)
000B0021 Defrosts the windshield (Y page 114)
0024 0008 Switches cooling with air dehumidification on/off ( Ypage 113)
0018 Blower setting bar display
0021 Defrosts the windshield (Y page 114)Information on the air-conditioning
system
Below, you can find a number of notes and
recommendations to help you use the air-
conditioning system optimally.
R Switch on the cooling with air
dehumidification function .The indicator
lamp in the switch lights up.
R Set the temperature to 72 ‡ (22 †). Only
change the temperature in small
increments.
R Only use the "defrosting" function briefly,
until the windshield is clear again. R
Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could
otherwise fog up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Only use the reheat function until the
fogged up windows are clear again. 110
Overview of climate control systemsClimate control

Control panel for rear-compartment air-conditioning system
0005
Sets the airflow (Y page 114)
0026 Increases the airflow
0025 Reduces the airflow
0006 Sets the temperature (Y page 113)
0026 Blower setting bar display
0025 001B Switches the rear-compartment air conditioning on/off (Y page 112)Information on rear-compartment air
conditioning
For optimum climate control, set the
temperature control to the middle level. Only
change the temperature in small increments. Operating the climate control system
Switching the climate control on/off
Important information When the climate control is switched off, air
intake and air circulation also stop. Only use
this setting for a brie
fperiod. Otherwise, the
windows could fog up. Activating/deactivating climate
control via the control panel X
Turn the key to position 2in the ignition
lock.
Vehicle with heating
X To switch on: set airflow control 0006down
to at least level 1(Ypage 110).
X To switch off: set airflow control 0006up to
the 0position (Y page 110).
Vehicle with air conditioning
X To switch on: press the0026button and
set the blower speed to at least the first
level.
The blower speeds are shown in bars next
to the button.
X To switch off: press the0025button and,
after reaching the lowest blower speed,
press it again. 112
Operating the climate control systemClimate control

Activating/deactivating rear-
compartment climate control via the
control panel X
Turn the key to position 2in the ignition
lock.
Vehicle with rear-compartment heating/
rear-compartment air conditioning
X To switch on/off: press the001Bswitch.
If the indicator lamp in the butto nlights up,
the rear-compartment heating/rear-
compartmen tair conditioning is switched
on. Switching the cooling with air
dehumidification function on/off
Important information If you switch off the "Cooling with air
dehumidification" function, the air inside the
vehicle will not be cooled (in warm weather)
or dehumidified. The windows could fog up
more quickly.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensatio nmay appear on the underside
of the vehicle when in cooling mode. This is
normal and not a sign that there is a
malfunction.
Switching on/off Vehicle with air conditioning
X
Press the 0008button.
If the indicator lamp in the butto nlights up,
cooling with air dehumidification is
switched on. Setting the temperature
Increasing/reducing temperature in
the front compartment via the control
panel Only change the temperature in small
increments. Start at the center position, or at
22 †.
X
Switch on climate control (Y page 112).
X Turn temperature control 0005clockwise to
increase or counterclockwise to reduce the
temperature (Y page 110).
Increasing/reducing temperature in
the rear compartment via the control
panel Only change the temperature in small
increments.
X
Switch on climate control (Y page 112).
X Turn rear-compartment temperature
control 0026(Ypage 111) or rear-
compartment air-conditioning system 0006
(Y page 112) clockwise to increase or
counterclockwise to reduce the
temperature.
i Vehicles with additional air conditioning
and heating in the rear compartment: if you
set the temperature control to the center
position, only one of the two climate
control systems works in the rear
compartmen tand in air-recirculation mode
(Y page 116). Setting the air distribution
Ai rd istribution settings The air distribution symbols have the
following meanings:
0027
Directs air through the center
and side air vents
000B0021 Directs air to the windshield and
the air vents Operating the climate control system
113Climate control