R
there is interference from other radar sour-
ces
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle is traveling in front, e.g. a
motorbike
R a vehicle is traveling in front on a different
line
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
Activating/deactivating the distance
warning function
When you switch on the engine, the distance
warning function switches on after a few sec-
onds.
X To deactivate: press the00D4button
(Y page 37).
Vehicles without steering wheel but-
tons: the00C7 warning lamp in the instru-
ment cluster lights up and the OFF
OFF message
flashes.
Vehicles with steering wheel buttons:
the 00C7 warning lamp in the instrument
cluster lights up and the message Dis‐ Dis‐
tance warning deactivated
tance warning deactivated appears.
X To activate: press the00D4button again
(Y page 37).
Vehicles without steering wheel but-
tons: the00C7 warning lamp in the instru-
ment cluster goes out and the ON
ON message
flashes.
Vehicles with steering wheel buttons:
the 00C7 warning lamp in the instrument
cluster goes out and the message Dis‐ Dis‐
tance
tance warning
warning activated
activated appears in the
multifunction display.
Adaptive Brake Assist
i Observe the "Important safety notes" sec-
tion for driving safety systems
(Y page 56). G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist may:
R intervene unnecessarily
R not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in a non-critical driving situation. G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R to stationary obstacles
R when cornering
As a result, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
Adaptive Brake Assist aids you when braking
during hazardous situations at speeds above
20 mph (30 km/h). With the help of the radar
sensor system, adaptive Brake Assist can rec-
ognize obstacles that are in the path of your
vehicle for an extended period of time.
When you approach an obstacle and adaptive
Brake Assist detects that there is a risk of a
collision, adaptive Brake Assist calculates the
braking force necessary to avoid a collision.
Should you apply the brakes forcefully, adap-
tive Brake Assist will automatically increase
the braking force to the calculated level.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking. Driving safety systems
59Safety Z
The brakes function as usual again if:
R you release the brake pedal
R there is no longer any danger of a collision
R no obstacle is detected in front of your
vehicle
Adaptive Brake Assist is then deactivated.
Up to the maximum vehicle speed, adaptive
Brake Assist can react to moving obstacles
that have already been recognized as such at
least once over the period of observation.
Adaptive Brake Assist does not react to sta-
tionary obstacles.
In particular, the detection of obstacles can
be impaired if:
R dirt on the sensors or anything else cover-
ing the sensors
R it is snowing or raining heavily
R there is interference from other radar sour-
ces
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle is traveling in front, e.g. a
motorbike
R a vehicle is traveling in front on a different
line
If adaptive Brake Assist is not available due
to a malfunction in the radar sensor system,
the full brake boosting effect with the help of
BAS remains available.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. ASR (acceleration skid control)
General notes Important safety notes
ASR can neither reduce the risk of an accident
nor suspend the laws of physics if the driver
does not pay attention when pulling away or accelerating. ASR is only an aid. Always adapt
your driving style to suit the prevailing road
and weather conditions.
Vehicles without steering wheel buttons: if
ASR is malfunctioning, the
003Dindicator
lamp lights up while the engine is running and
the engine power may be reduced
(Y page 221).
ASR significantly improves traction, i.e. the
transmission of power from the tires to the
road surface, and thus increases the vehicle's
driving stability. If the driving wheels start to
spin, ASR brakes individual drive wheels and
limits the engine torque. ASR thus signifi-
cantly assists you when pulling away and
accelerating, especially on wet or slippery
roads.
If traction on the road surface is not sufficient,
even ASR will not allow you to pull away with-
out difficulty. The type of tires and total
weight of the vehicle as well as the gradient
of the road also play a crucial role.
If ASR intervenes, the 0072warning lamp in
the instrument cluster flashes.
Activating/deactivating ASR G
WARNING
If deactivated, ASR will not attempt to stabi-
lize the vehicle during pulling away and accel-
eration. There is an increased risk of skidding
and of an accident.
Only deactivate ASR in the situations descri-
bed in the following.
! If you deactivate ASR, ESP ®
will still inter-
vene to stabilize the vehicle. Frequent brak-
ing automatically triggered by ESP ®
can
damage the brake system.
For this reason, deactivate ASR only briefly
and when absolutely necessary. 60
Driving safety systemsSafety
Problems with the key/remote control
Problem Possible causes/consequences and
0050
0050Solutions 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.
X
Close the doors properly and lock the vehicle again. The central locking system has malfunctioned.
X
Lock the vehicle using the folding key (Y page 66).
X Have the central locking system checked as soon as possible
at a qualified specialist workshop. It is no longer possible
to lock or unlock the
vehicle using the
remote control. The key battery is weak or discharged.
X
Point the remote control at the driver's door handle from very
close range and press the 0036or0037 button.
If this does not work:
X Replace the key battery (Y page 69).
Or
X Lock the vehicle using the folding key (Y page 66). The remote control is faulty.
X
Lock the vehicle using the folding key (Y page 66).
X Have the key checked at a qualified specialist workshop. The key cannot be
turned in the ignition
lock. The steering lock has jammed mechanically.
X
Remove 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.
X Switch off all non-essential consumers, such as interior lighting,
and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 266).
Or
X Jump-start the vehicle (Y page 278).
Or
X Consult a qualified specialist workshop. You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the mechanical locks replaced. 70
KeyOpening and closing
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 func-
tions. This also applies to systems and func-
tions relevant to safety.
Read the information on qualified specialist
workshops (Y page 26). Exterior lighting
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.
R Do not use a bulb that has been dropped or
that has scratches on its glass tube.
The bulb could may explode.
R Only use bulbs in closed lamps which have
been designed for this purpose.
R Only use spare bulbs of the same type and
with the prescribed voltage
R Protect the bulbs from moisture when in
use.
If the new bulb still does not light up, consult
a qualified specialist workshop.
R Have the LEDs and bulbs of the following
lamps changed at a qualified specialist
workshop:
-the additional turn signals in the exterior
mirrors
- the high-mounted brake lamp
- LED daytime running lamps
- the Bi-Xenon bulbs
- front fog lamps
If you require assistance changing bulbs, con-
sult a qualified specialist workshop. Lamp failure indicator
The bulb failure indicator is only an aid. You
are responsible for the proper functioning of
the vehicle lighting. Insufficient or non-func-
tioning vehicle lighting puts the operating
safety of the vehicle at risk. 92
Exterior lightingLights and windshield wipers
For this reason, check the condition and func-
tion of your vehicle's lighting system and, if
necessary, that of the trailer before each jour-
ney.
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 0049(Ypage 35) indicator lamp
lights up, or you will see a corresponding
message in the display (Y page 210).
i Depending on the equipment, the bulb
failure indicator can fail for all lamps with
the exception of the turn signal lamps. Light switch
Operation 00470058
Automatic headlamp mode
0048003F Lights off/daytime running lamp
mode
00490060 Parking lamps, license plate and
instrument lighting
004A0058 Low-beam/high-beam headlamps
004B005A Fog lamps
004C005E Rear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to 003For0058.
Or
X If 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
combination switch (Y
page 95).
Low-beam headlamps X
To switch on: turn the key to position 2in
the ignition lock or start the engine.
X Turn the light switch to position 0058.
The 0058 indicator lamp in the instrument
cluster lights up.
X To switch off: turn the light switch to
003F.
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 day-
time running lamps are a legal requirement.
The daytime running lamps function must be
activated using the on-board computer:
R
vehicles with steering wheel buttons
(Y page 194)
R vehicles without steering wheel buttons
(Y page 185)
X To switch on: turn the light switch to the
003F position.
The low-beam headlamps, parking lamps
and license plate lamp are switched on
when the engine is running. The 0058indi-
cator lamp in the instrument cluster lights
up.
i USA only:
If you turn the light switch to the 0060or
0058 position, the parking lamps or low-
beam headlamps switch on. If you turn the
light switch to the 0058position, the day-
time running lamps remain switched on.
i Canada only:
If you turn the light switch to the 0058posi-
tion, the low-beam headlamps are switched
on. If you turn the light switch to the 0060 Exterior lighting
93Lights and windshield wipers Z
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
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
control system in the vehicle. The auxiliary
heating heats the air in the vehicle interior to
the temperature set.
If your vehicle is equipped with a hot-water
auxiliary heater, the auxiliary heating also
keeps the coolant warm. This way, the load
on the engine is minimized and fuel is saved.
The heater booster function (Y page 130) of
the auxiliary heating supports the climate
control system when the engine is running
and the outside temperature is low.
You can use the auxiliary heating at an out-
side temperature of up to 39 ‡ (4 †). At an
outside temperature above 39 ‡ (4 †) the
auxiliary heating system and the heater boos-
ter function switch off automatically. Heating time
The heating time operating the auxiliary heat-
ing when the vehicle is stationary without the
engine running depends on the outside tem-
perature. Outside tempera-
ture Heating time
Above 23 ‡ (
00F85 †) Approx. 20 minutes
23 ‡ (
00F85 †) to 5 ‡
(00F815 †) Approx. 40 minutes
Below 5 ‡ (00F815 †) Approx. 50 minutes
You can then switch on the auxiliary heating
again.
If you do not start the engine for a while, the
total duration of heating is limited to a maxi-
mum of 120 minutes to protect the starter
battery. Switching on the auxiliary heating is
then automatically disabled. You can, for
example, switch on the auxiliary heating with-
out the engine running if the outside temper-
ature is
00F85 ‡ (00F820 †) a maximum of two
times. If you try it again, the indicator lamps
in the 0084button (Y page 124) flash alter-
nately for approximately 2 minutes to signal switch-on interlock. The auxiliary heating can-
not be switched on without starting the
engine.
When the charge status of the starter battery
is sufficient again, the switch-on interlock will
be deactivated. To charge the starter battery,
let the engine run. The engine runtime
required to reach the necessary charge sta-
tus depends on the outside temperature.
Outside tempera-
ture Engine runtime
Above 32 ‡ (0 †) Approx. 10 minutes
32 ‡ (0 †) to 14 ‡
(00F810 †) Approx. 15 minutes
Below 14 ‡ (
00F810 †) Approx. 20 minutes
Before switching on
X Check 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.
X Switch on climate control (Y page 116).
X Set the temperature control to the desired
temperature (Y page 117).
X Set the air distribution as required
(Y page 117).
X Open the center (Y page 121) and side air
vents ( Ypage 121) and set them to the
middle position.
i The auxiliary heating automatically
switches to heater booster mode after the
engine is started. Operating the auxiliary heating system
123Climate control Z