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 27).
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 34) indicator lamp lights up, or
you will see a corresponding message in the
display (
Ypage 182).
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 82).
Low-beam headlamp
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.
80Exterior lighting
Lights and windshield wipers
The daytime running lamps function must be
activated using the on-board computer:
Rvehicles with steering wheel buttons
(Ypage 168)
Rvehicles without steering wheel buttons
(Ypage 161)
XTo switch on:turn the light switch to the
$ position.
The low-beam headlamps, parking lamps and
license plate lamp are switched on when the
engine is running. The Lindicator lamp in
the instrument cluster lights up.
iUSA only:
If you turn the light switch to the TorL
position, the parking lamps or low-beam
headlamps switch on. If you turn the light
switch to the Ãposition, the daytime run-
ning lamps remain switched on.
iCanada only:
If you turn the light switch to the Lposi-
tion, the low-beam headlamps are switched
on. If you turn the light switch to the Tor
à position, the daytime running lamps
remain switched on.
Automatic headlamp mode
GWARNING
When the light switch is set to Ã, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
L.
Automatic headlamp mode is only a driving aid.
You are responsible for the vehicle lighting at all
times.
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.
If there is fog, snow or spray, turn the light
switch quickly from ÃtoL. You could
otherwise briefly interrupt operation of the
headlamps.
XTo switch on automatic headlamp mode:
turn the light switch to Ã.
Key in position 1in the ignition lock: the park-
ing lamps switch on or off automatically
depending on the ambient light.
When the engine is running: if you activate the
"daytime running lamps" function using the
on-board computer, the daytime running
lamps are switched on. The parking lamps and
low-beam headlamps also switch on or off
automatically, depending on the ambient
light.
When the low-beam headlamps are switched
on, the Lindicator lamp in the instrument
cluster lights up.
Fog lamps/rear fog lamp
GWARNING
If you suspect that driving conditions will be
foggy, turn the light switch to Lbefore you
start your journey. Your vehicle may other-
wise not be visible and you could endanger
yourself and others.
GWARNING
In low ambient lighting or foggy conditions,
only switch from position ÃtoL with
the vehicle at a standstill in a safe location.
Switching from ÃtoL will briefly
switch off the headlamps. Doing so while driv-
ing in low ambient lighting conditions may
result in an accident.
XTurn the ignition key to position 2in the igni-
tion lock or start the engine.
XTurn the light switch to LorT.
iIf your vehicle is only equipped with one rear
fog lamp, you must turn the light switch to
L.
iWhen the light switch is set to Ãyou
cannot switch on the front and rear foglamps.
XTo switch on the front fog lamps: pull the
light switch out to the first locking point.
The green Nindicator lamp on the light
switch lights up.
Exterior lighting81
Lights and windshield wipers
Z
XTo switch on the rear fog lamp:pull the light
switch out to the second locking point.
The yellow Rindicator lamp on the light
switch lights up.
XTo switch off the front and rear foglamps:
push in the light switch to the stop.
The R andN indicator lamp on the light
switch go out.
Combination switch
Turn signal lamps
:To indicate a right turn
;To indicate a left turn
XTo indicate: press the combination switch in
desired direction :or; until it engages.
The combination switch automatically returns
to its original position after large steering
movements.
XTo indicate briefly: press the combination
switch briefly in desired direction :or;.
The corresponding turn signal flashes three
times.
High-beam headlamps and high-beam
flasher
:High-beam headlamps
;High-beam flasher
XTo switch on the high-beam headlamps:
switch on the low-beam headlamps
(
Ypage 80).
XPress combination switch :forwards.
The K indicator lamp in the instrument
cluster lights up.
iIn the Ãposition, the high-beam head-
lamps are only switched on when it is dark and
the engine is running.
XTo switch off the high-beam headlamps:
move the combination switch back to its nor-
mal position.
The K indicator lamp in the instrument
cluster goes out.
XTo switch on the high-beam flasher: turn
the SmartKey to position 1or 2in the ignition
lock.
XPull the combination switch briefly in direc-
tion of arrow ;.
Headlamp range adjustment
82Exterior lighting
Lights andwindshield wiper s
The headlamp range control is used to adapt the
downward angle of the headlamp beams in
accordance with the load on your vehicle. The
cone of light from the headlamps changes if
seats are occupied or if the cargo compartmentis being loaded or unloaded. This can impair vis-
ibility and cause glare to oncoming traffic.
You can only adjust the headlamp range while
the engine is running.
XTurn headlamp range control :to 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 oncom-
ing traffic.
Select position gif the vehicle is unladen.
Cornering lamps
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:
Ryou 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.
Ryou 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 minutes.
iIf reverse gear is engaged the lamp on the
opposite side of the vehicle switches on
instead.
Hazard warning lamps
GWARNING
The rear exterior light will be covered if you:
Ropen the rear doors by 90°
Ropen 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
XTo switch on/off: press the£hazard
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 automati-
cally if:
Ran air bag is deployed.
Ryou 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 £hazard warn-
ing lamp switch to switch them off.
iThe 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 (
Ypage 94) while
the low-beam headlamps are on and the engine is running.
You can find information on refilling washer fluid
in the "Maintenance and care" section
(
Ypage 220).
Exterior lighting83
Lights and windshield wiper s
Z
Highbeam Assist
General notes
You can use this function to set the headlamps
to change between low beam and high beam
automatically. The system recognizes vehicles
with their lights on, either approaching from the
opposite direction or traveling in front of your
vehicle, and consequently switches the head-
lamps 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
GWARNING
Highbeam Assist does not recognize road
users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose 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 similar 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 prevailing light, vis-
ibility and traffic conditions.
In particular, the detection of obstacles can be
restricted if there is:
Rpoor visibility, e.g. due to fog, heavy rain or
snow
Rdirt on the sensors or anything else covering
the sensors
Activating/deactivating Highbeam
Assist
XTo activate: switch on the Highbeam Assist
function using the on-board computer
(
Ypage 168).
XTurn the light switch to the Ãposition.
XPress the combination switch beyond the
pressure point in the direction of arrow :
(
Ypage 82).
Highbeam Assist is active.
The _ or
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 Kindicator 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 Kindicator lamp in the
instrument cluster goes out. The _or
indicator lamp in the multifunction
display remains lit.
XTo deactivate: move the combination switch
back to its normal position or move the light
switch to another position.
The _ or
indicator lamp in the
multifunction display goes out.
Headlamps fogged up on the inside
The headlamps may fog up on the inside if there is high atmospheric humidity.
XSwitch 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:
XHave the headlamps checked at a qualified
specialist workshop.
84Exterior lighting
Lights and windshield wipers
Vehicles with Bi-Xenon headlamps
:
Turn-signal: NAK 3457
;Cornering light function: H7 55W
Vehicles with additional turn signals in the
exterior mirrors
Additional turn signal lamp: HPC 16WY
Low-beam headlamps and high-beam
headlamps/cornering lamp
Example: halogen headlamps
XSwitch off the lighting system.
XOpen the hood (Ypage 214).
XTurn housing cover :in the direction of the
arrow and remove it.
Example: halogen headlamps
;
Low-beam headlamp bulb holder
=Bulb holder for high-beam headlamp
?Bulb holder for parking lamp/standing lamp
(halogen headlamps)
XTurn the corresponding bulb holder with
bulb ;,=or? counter-clockwise and pull
it out of the lamp.
XPull the bulb out of the bulb holder.
XInsert the new bulb in such a way that its base fits into the recess of the bulb holder.
XInsert the bulb holder with the bulb into the
lamp and turn it clockwise to tighten.
The bulb holder engages audibly.
XPlace housing cover :into the opening and
turn in the opposite direction of the arrow.
XClose the hood.
Cornering light function/daytime run-
ning lamps
XSwitch off the lighting system.
XOpen the hood (Ypage 214).
XTurn housing cover :counter-clockwise and
remove.
88Changing bulbs
Lights and windshield wipers
XRemove thebulb from bulb holder ;.
XPress thene wbulb int obulb holder ;.
XScrew bulb holder ;intocourtesy ligh t:.
XConnect cable connecto r=.
The connecto rlockin gspring mus tengage .
XAlign courtesy ligh t: on th eside and
engage .
Interior lighting
General notes
!Hav eth ebulbs in th eoverhead control
panel replace dat aqualified specialist work-
shop. You could otherwise damag eth eover-
head control panel.
Front interior light
Type of lamp : K18 W
XSwitc hoff th einterior lighting .
XPress spring catch ;in th edirection of th e
arrow and lift off interior ligh t:.
XRemove bulb =from th ebulb holder.
XInser tne wbulb =.
XAlign interior ligh t: on th eright-hand side
and engage th espring catch .
Rear interior light
Interior ligh twith switch
Interio rligh twit hswitch
Type of lamp: K15 W
XSwitc hoff th einterior lighting .
XPress in thecatch spring sof lamp housing :
wit h a suitable objec tand pry off lamp hous -
ing :.
XPress th econtact spring of bulb holder ;
outwards and remove bulb =.
XInsert anewbulb =.
XAlign lamp housing :on th eleft-han dside
and engage .
iVehicles with LED lighting: if an LEDis
faulty, consult aqualified specialist work-
shop.
Interior ligh twithout switch
Interio rligh twithout switch
Type of lamp: K15 W
XSwitc hoff th einterior lighting .
XPress in thecatch spring sof lamp housing :
wit h a suitable objec tand pry off lamp hous -
ing :.
XOpen protective cover ?.
XPress thecontact spring of bulb holder ;
outwards and remove bulb =.
XInsertne wbulb =.
Changing bulbs93
Lights and windshield wipers
Z
XFold protective cover?back into place.
XAlign lamp housing :on the left-hand side
and engage.
iVehicles with LED lighting: if an LED is
faulty, consult a qualified specialist work-
shop.
Cargo compartment lamp
Type of lamp: W 10 W
XSwitch off the interior lighting.
XUndo screws :and remove the lamp lens.
XPress bulb ;into the bulb holder and
unscrew it counter-clockwise.
XPress new bulb ;into the bulb holder and
screw it in clockwise.
XPosition the lamp lens and tighten screws :.
iVehicles with LED cargo compartment
lamp: if an LED is defective, consult a quali-
fied specialist workshop.
Windshield wipers
Switching the windshield wiper
on/off
!
Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratch the glass
if wiping takes place when the windshield is
dry. If it is necessary to switch on the windshield
wipers in dry weather conditions, always use
washer fluid when operating the windshield
wipers.
!If the windshield wipers leave smears on the
windshield after the vehicle has been washed
in an automatic car wash, wax or other resi-
dues may be the reason for this. Clean the
windshield using washer fluid after washing
the vehicle in an automatic car wash.
!Vehicles with rain/light sensor:
Switch the wipers off in dry weather. Other-
wise, dirt or optical effects may cause unde-
sired windshield wiper sweeps. This could
then damage the windshield wiper blades or
scratch the windshield.
The windshield will no longer be wiped properly
if the wiper blades are worn. Replace the wiper
blades twice a year (
Ypage 95), ideally in
spring and fall.
Combination switch
XTurn the key to position 1or 2in the ignition
lock.
XTurn the combination switch in the direction
of arrow ;to the appropriate setting
depending on the intensity of the rain.
XSingle wipe: push the combination switch
briefly to the pressure point in the direction of arrow :.
XTo wipe with washer fluid: press the com-
bination switch beyond the pressure point in
the direction of arrow :.
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
94Windshield wipers
Lights and windshield wiper s