
Mirrors
Rear-view mirror
X
Anti-glare mode: push anti-glare lever 0043
in the direction of the arrow. Exterior mirrors
Important safety notes G
WARNING
The additional mirrors in the exterior mirrors
reduce the size of the image. Objects visible in the mirrors are closer than they appear. You
could misjudge the distance from road users
driving behind you when changing lanes, for
instance. There is a risk of an accident.
You should therefore always determine the
actual distance from road users driving
behind you, e.g.:
R by looking over your shoulder
R by looking in the main mirror in the exterior
mirror.
Adjusting manually X
Before starting off, manually adjust the
exterior mirrors in such a way that you can
get a good overview of road and traffic con- ditions. Adjusting electrically
Adjustment buttons and switches for setting the
mirrors
X Before pulling away, turn the key to position
2 in the ignition lock (Y page 138).
X Press switch 0044to position 1for the left-
hand exterior mirror or to position 2for the
right-hand exterior mirror.
X Press adjustment button 0043at the top, bot-
tom, right or left.
Adjust the exterior mirrors in such a way
that you can get a good overview of road
and traffic conditions.
i The exterior mirrors are automatically
heated at low outside temperatures. Mirrors
89Seats, steering wheel and mirrors Z

R
Do not use a bulb that has been dropped or
that has scratches on its glass tube.
The bulb could 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 (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. Vehicles with halogen headlamps
0043
Turn signal: PY21W
0044 Daytime running lamps: W21W 0087
Low-beam headlamps: H7 55W
0085 High-beam headlamps: H7 55W
0083 Parking lamps/standing lamps: W5W Vehicles with Bi-Xenon headlamps
0043
Turn-signal: NAK 3457
Additional turn signals in the exterior mir-
ror (not for all-wheel-drive vehicles):
HPC 16WY
Low-beam headlamps and high-beam
headlamps/cornering lamp Example (halogen headlamps)
X Switch off the lighting system.
X Open the hood (Y page 248).
X Turn housing cover 0043in the direction of
the arrow and remove it. 100
Changing bulbsLights and
windshield wipers

cable and a folding spade are carried in the
vehicle.
X Wheels and tires: check the tire tread
depth (Y page 285) and tire pressure
(Y page 288).
Rules for driving off-road !
Always bear the vehicle's ground clear-
ance in mind and avoid obstacles, e.g. deep ruts.
Obstacles may damage the following parts
of the vehicle:
R the chassis
R the drive train
R the fuel and supply tanks
For this reason, you should always drive
slowly when driving off-road. If you have to drive over obstacles, have the co-driver
direct you.
i We recommend that you additionally
carry a shovel and a recovery rope with
shackle in the vehicle.
R Ensure that loads and items of luggage are
securely stowed or lashed down
(Y page 240).
R Before driving off-road, stop the vehicle and
shift to a low gear.
R If the surface demands it, temporarily deac-
tivate ASR when pulling away (Y page 58).
R Only drive off-road with the engine running
and a gear engaged.
R Drive slowly and smoothly. Walking pace is
necessary in many situations.
R Avoid spinning the drive wheels.
R Make sure that the wheels always remain in
contact with the ground.
R Drive with extreme care over unknown ter-
rain where you can only see for a short dis-
tance. As a precaution, get out of the vehi-
cle to take a look at the route to be taken in
advance.
R Check the water depth before fording. R
Watch out for obstacles (e.g. rocks, holes,
tree stumps and ruts).
R Avoid edges where the surface could crum-
ble or break away.
Checklist after driving off-road !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Off-road driving places a higher demand on
your vehicle than normal road operation.
Check your vehicle after driving on rough ter- rain. By doing so you will notice any damage in
good time and reduce the risk of an accident for yourself and other road users. Clean your
vehicle thoroughly before driving on public
roads.
Observe the following points after driving off-
road, on construction sites and before driving on public roads:
X Activate ASR (Y page 58).
X Clean the headlamps and tail lamps and
check them for damage.
X Clean the front and rear license plates.
X Clean the windshield, windows and exterior
mirrors.
X Clean the steps, door sills and grab han-
dles.
This increases safety of footing.
X Clean the wheels/tires, wheel housings
and the underbody of the vehicle with a
water jet.
This increases road grip, especially on wet
road surfaces.
X Check the wheels/tires and wheel hous-
ings for trapped foreign objects and
remove them.
Trapped foreign objects can damage the
wheels/tires and may be flung out from the
vehicle when you continue driving.
X Check the underbody for trapped branches
or other parts of plants and remove them.
Trapped branches or other parts of plants
increase the risk of fire and can cause dam- 158
Driving tipsDriving and parking

Adaptive Brake Assist aids you when braking
during hazardous situations at speeds above
20 mph (30 km/h). With the help of Adaptive Brake Assist, the distance warning signal can
detect 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.
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 there is dirt on the sensors or anything else
covering 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 traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
If adaptive Brake Assist is not available due to a malfunction in the radar sensor system, thefull 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. Lane Tracking package
Blind Spot Assist General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from speeds of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lane, you will
also receive an optical and audible collision
warning. For this purpose, Blind Spot Assist
uses sensors in the rear bumper and behind
the protective strips of the B-pillars.
Important safety notes G
WARNING
Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving.
i USA only:
This device has been approved by the FCC as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive Driving systems
163Driving and parking Z

0043
Yellow indicator lamp/red warning lamp
If yellow indicator lamp 0043lights up:
R you are driving at less than 20 mph
(30 km/h)
R Blind Spot Assist is deactivated
R Blind Spot Assist is malfunctioning
R there is no clear warning, depending on the
situation
Blind Spot Assist is active from a speed of
20 mph (30 km/h). If a vehicle is detected in
the blind spot monitoring range, red warning
lamp 0043on the corresponding side lights up.
This warning occurs when a vehicle enters the blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 14 mph (22 km/h).
Yellow indicator lamp 0043goes out if reverse
gear is engaged. Blind Spot Assist is then
deactivated.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
Collision warning
If a vehicle is detected in the monitoring range of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds once. Red warning lamp 0043
flashes. If the turn signal remains on, detec-
ted vehicles are indicated by the flashing of
red warning lamp 0043. There are no further
warning tones. Activating/deactivating Blind Spot Assist
i Blind Spot Assist is activated when you
switch on the ignition.
X Turn the key to position 2in the ignition
lock.
Warning lamps 0043in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
X To deactivate: press the button in
the center console (Y page 37).
The yellow indicator lamp in exterior mir-
ror 0043first flashes and then lights up con-
tinuously.
X To activate: press the button in the
center console again (Y page 37).
The yellow indicator lamp in exterior mir-
ror 0043flashes initially. If you exceed
20 mph (30 km/h) while driving, the yellow
indicator lamp in exterior mirror 0043goes
out.
Towing a trailer
If you attach a trailer, make sure that you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Blind Spot Assist is deac-
tivated as a result. The indicator lamp in the
exterior mirrors lights up yellow.
On vehicles with steering wheel buttons, the
Blind Spot Assist Deactivated
Blind Spot Assist Deactivated mes-
sage also appears in the display.
Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of a camera at
the top of the windshield. Lane Keeping Assist detects lane markings on the road and warns you before you leave your lane unintention-
ally. Driving systems
165Driving and parking Z

Warning displays
Warning display, front area
Warning display for the left-hand rear area in the
left-hand exterior mirror
0043 Warning segments for the left front area
0044 Warning segments for the right front area
0087 Operational readiness symbol for the
front area
0085 Warning display segments
0083 Operational readiness symbol for the rear
area
The warning displays show the distance
between the sensor and the obstacle.
The warning display is divided into five yellow and two red segments for each side of the
vehicle. PARKTRONIC is operational if yellow
indicator segments 0087and 0083are lit.
There is a malfunction if only the red seg-
ments of the warning display light up
(Y page 171).
The position of the gear lever determines
whether the front and/or rear area is moni-
tored. Selector lever
position Monitoring
D
Front area
R
or N Front and rear area
P
No areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distance from the obstacle.
From the:
R sixth segment, an intermittent warning
tone sounds for approximately 2 seconds.
R seventh segment, a continuous warning
tone sounds. This indicates that you have
now reached the minimum distance.
Roll-back warning PARKTRONIC automatically monitors the
area behind the vehicle if the vehicle begins to
roll backwards without reverse gear engaged,
e.g. after stopping on an uphill gradient.
If PARKTRONIC recognizes an obstacle at a
distance of at most 31 in (80 cm), all the seg- ments in the warning displays light up. A con-
tinuous warning tone also sounds as the vehi- cle approaches the obstacle and for a further
2 seconds after the vehicle has come to a
halt.
Activating/deactivating PARKTRONIC Driving systems
169Driving and parking Z

The camera is in the middle of the roof above
the high-mounted brake lamp (Y page 269).
The rear view camera may show obstacles in perspectival distortion, incorrectly or not at
all. The rear view camera cannot display all
objects located very near and/or under the
rear bumper. It does not warn you of a colli-
sion, persons or objects.
The area behind the vehicle is displayed in a
mirrored fashion, as in the rear-view mirror or
the exterior mirrors.
The function of the rear view camera may be
partially or completely impaired in the follow-
ing circumstances:
R it is raining very heavily or snowing, or it is
foggy.
R the parking space is located in a very dark
place.
R the camera is exposed to very strong white
light. White stripes may appear on the dis-
play.
R the surrounding area is illuminated with flu-
orescent light. The display may flicker.
R if the temperature changes very quickly, for
example if you drive into a heated garage in the winter.
R ambient temperatures are very high.
R the camera lens is dirty or obstructed.
R the rear of the vehicle is damaged. In this
case, have the position and setting
checked at a specialist workshop.
The rear view camera is activated when you
engage reverse gear R.
You can find information on cleaning the cam-
era in the "Maintenance and care" section
(Y page 269). Working mode
ADR (working speed governor)
General notes When activated, ADR automatically increases
the engine speed to a preset speed or a speed
you have set.
i After a cold start, the idling speed of the
engine is increased automatically. If the
preset working speed is lower than the
increased idling speed, the working speed
is only reached once the engine has com-
pleted the warm-up phase.
It is only possible to activate ADR with the
vehicle stationary and the parking brake
applied.
The selector lever of the automatic trans-
mission must be in position P.
Activating/deactivating ADR X
To activate: press upper section 0043of the
0091 switch while the engine is running.
The indicator lamp in the switch comes on.
The 004E indicator lamp in the instrument
cluster lights up or the display shows the
following message: Operating speed Operating speed
governor active
governor active.
X To deactivate: press lower section 0044of
the 0091 switch while the engine is run-
ning.
The indicator lamp in the switch goes out. 172
Working modeDriving and parking

X
Remove the objects that are preventing the
trailer from rolling, e.g. wheel chocks.
X Release the trailer parking brake.
i The subharness of the vehicle has a cable
connection to the brake lamp indicator
lamp.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian provin-
ces require by law:
R safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must be fastened to the vehicle's trailer cou-
pling, not to the bumper or the axle.
Leave enough slack in the chains. This
allows you to drive round tight corners.
R a separate brake system for certain types
of trailer.
R a safety switch for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer detaches from the towing vehi- cle, the safety switch applies the trailer's
brakes. Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Make sure your vehicle/trailer
combination complies with local laws. This
not only means where you live, but also any-
where you are driving to. Information is avail-
able from the police and local authorities.
Observe the following when towing a trailer:
R Practice driving around bends, stopping
and backing up at a place where there is no
traffic. This enables you to gain experience and get used to the new handling charac-
teristics.
R Before driving, check:
- that the trailer tow hitch and ball cou-
pling are secure
- that the safety switch for a braked trailer
is functioning properly
- that the safety chains are secure and not
damaged
- that the electrical connections are
secure
- that the lights are working
- that the wheels are in good order and the
tire pressure is correct
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer has electronically controlled
brakes, pull the vehicle/trailer combina-
tion away carefully. Brake manually using
the brake controller and check that the
brakes are working.
R Secure the load on the trailer according to
the applicable specifications and current
standards on securing loads (Y page 242).
R When driving with a trailer, check at regular
intervals that the load is secured and that
the brakes and lights are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly and has a
decreased gradient climbing capability and
a longer braking distance.
It is more susceptible to crosswinds and
requires cautious steering.
R If possible, do not brake suddenly, but
rather moderately at first so that the trailer
can activate its brakes. Then increase the
force on the brake pedal.
R If the automatic transmission repeatedly
shifts between gears when driving on 176
Towing a trailerDriving and pa
rking