Operation
● Chec k
wh
y the panoramic sliding sunroof
or the sun blind does not close.
● Try and close them again.
● If the panoramic sliding sunroof or sun
blind is
still obstructed, it will stop at the cor-
responding position. Close it without the an-
ti-trap function.
Closing without the roll-back function
● The switch should be in the “closed posi-
tion” ›››
page 14
1 .
● Panoramic sliding sunroof: Within fiv
e sec
-
onds of triggering the anti-trap function, pull
the control all the way back ›››
page 14
(arrow 5 ) until the panoramic sliding sun-
r oof
c
loses fully.
● Sun blind: Within five sec
onds of triggering
the anti-trap function, press button
››› Fig. 138 2 until the sun blind closes fully.
● The panoramic sliding sunroof and sun
b lind c
lo
se without the anti-trap function.
● If the panoramic sliding sunroof still cannot
be closed,
visit a specialised workshop. WARNING
Closing the panoramic sliding sunroof or sun
blind w ithout
the anti-trap function can cause
serious injuries.
● Always close the panoramic sliding sunroof
caref
ully. ●
Nobody shou
ld be in the way of the panor-
amic sliding sunroof or sun blind, especially
when they are closed without the anti-trap
function.
● The anti-trap function does not prevent fin-
gers
or other parts of the body getting
pinched against the window frame and caus-
ing injury. Note
The anti-trap function is activated if the win-
do ws
and the panoramic sliding sunroof are
closed from the outside of the vehicle using
the ignition key for convenience closing
››› page 125. Lights and visibility
Light s
Side light and dip
ped beam headlight Read the additional information carefully
›› ›
page 25
The legal requirements regarding the use of
vehicle lights in each country must be ob-
served.
The driver is personally responsible for the
correct use and adjustment of the lights in all
situations.
Audible warnings to advise the driver that
the lights have not been switched off
If the key is not in the ignition and the driver
door is open, an audible warning signal is
heard in the following cases: this is a remind-
er to turn off the lights.
● When the parking light is on ››
›
page 129.
● When the light switch is in position or
. WARNING
The side lights or daytime driving lights are
not bright enough t
o illuminate the road
ahead and to ensure that other road users are
able to see you. 128
Lights and visibility
●
Alw a
ys use your dipped beam head lights if
it is raining or if visibility is poor. WARNING
If the headlights are set too high and not
u sed c orr
ectly, there is a risk of dazzling or
distracting other road users. This could result
in a serious accident.
● Always make sure that the headlights are
correctly
adjusted. Daytime running lights
The daytime driving lights consist of individu-
al
lights, int
e
grated in the front headlights.
With the daylight driving lights on, only these
lights switch on ››› .
The d a
ytime driv
ing lights switch on every
time the ignition is switched on, if the switch
is in positions or , according to the level
of exterior lighting.
When the light switch is in position , a
light sensor automatically switches dipped
beam on and off (including the control and
instrument lighting) or the daytime driving
lights depending on the level of exterior
lighting. WARNING
● Never driv e w
ith daytime lights if the road
is not well lit due to weather or lighting con-
ditions. Daytime lights do not provide
enough light to illuminate the road properly
or be seen by other road users.
● The rear lights do not come on with the
daytime driv
ing light. A vehicle which does
not have the rear lights on may not be visible
to other drivers in the darkness, in the case
of heavy rain or in conditions of poor visibili-
ty. Turn signal and main beam lever
Read the additional information carefully
› ›
›
page 26
Push the lever all the way down to turn off
the corresponding function.
Convenience turn signals
For the convenience turn signals, move the
lever as far as possible upwards or down-
wards and release the lever. The turn signal
will flash three times.
The convenience turn signals are activated
and deactivated in the Easy Connect system
via the key and the
Set
up function button
› ›
›
page 110. In vehicles that do not have the correspond-
ing menu, this
function can be deactivated in
a specialised workshop. WARNING
Improper or lack of use of the turn signals, or
for g
etting to deactivate them can confuse
other road users. This could result in a seri-
ous accident.
● Always give warning when you are going to
chan
ge lane, overtake or when turning, acti-
vating the turn signal in good time.
● As soon as you have finished changing
lane, ov
ertaking or turning, switch the turn
signal off. WARNING
Incorrect use of the headlights may cause ac-
cident s
and serious injury, as the main beam
may distract or dazzle other drivers. Note
● If the c on
venience turn signals are operat-
ing (three flashes) and the other convenience
turn signals are switched on, the active part
stops flashing and only flashes once in the
new part selected.
● The turn signal only works when the igni-
tion is sw
itched on. The hazard warning
lights also work when the ignition is switch-
ed off. » 129
Technical data
Advice
Operation
Emergencies
Safety
Operation
●
If a tr ai
ler turn signal malfunctions, the
control lamp will stop flashing (trailer turn
signals) and the vehicle turn signal will flash
at double speed.
● The main beam headligh
ts can only be
switched on if the dipped beam headlights
are already on.
● In cold or damp weather conditions, the
headlight
s, tail lights and turn signals may
mist up inside temporarily. This is normal and
in no way effects the useful life of the vehicle
lighting system. Automatic dipped beam control
*The automatic dipped beam control is merely
int
ended a
s
an aid and is not able to recog-
nise all driving situations.
When the light switch is in position , the
vehicle lights and the instrument panel and
switch lighting switch on and off automatical-
ly in the following situations ››› in Daytime
ru nnin
g light
s on page 129:
Automatic switching
onAutomatic switching
off
The photo sensor detects
darkness, for example,
when driving through a
tunnel.When adequate lighting is
detected.
Automatic switching
onAutomatic switching
off
The rain sensor detects
rain and activates the
windscreen wipers.When the windscreen wip-
ers have been inactive for
a few minutes. WARNING
If the road is not well lit and other road users
cannot see the
vehicle well enough or at all,
accidents may occur.
● The automatic dipped beam control ( )
only sw
itches on the dipped beam when
there are no changes in brightness, and not,
for example when it is foggy. Main beam assist*
››
›
table on page 2
Main beam assist (Light Assist)
The main beam assist acts within the limits
of the system and depending on environmen-
tal and traffic conditions. Once switched on,
the system is activated as of a speed of
about 60 km/h (37 mph) and is deactivated
below about 30 km/h (18 mph) ››› .
When the sy s
t
em is activated and the camera
detects other vehicles that may be dazzled,
the main beam is automatically switched off.
Otherwise, the main beam is automatically
switched on. The main beam assist generally detects illu-
minated ar
eas and deactivates the main
beam when passing through a town, for ex-
ample.
Switching the main beam assist on and off
Func-
tionAction
Acti-
vate:
– Switch the ignition on and turn the light
switch to position .
– From the base position, move the main
beam and turn signal lever forwards
››› page 129. When the warning lamp
is
displayed on the instrument panel display,
the main beam assist is switched on.
To
switch
system off:
– Switch off the ignition.
– OR: turn the light switch to a different posi-
tion to
››› page 128.
– OR: with main beam on, move the main
beam and turn signal lever backwards.
– OR: move the main beam and turn the sig-
nal lever forwards to manually switch the
main beam on. The main beam assist will then
be deactivated. Malfunctions
The f
o
l
lowing conditions may prevent the
main beam headlight control from turning off
the headlights in time or from turning off al-
together:
● In poorly lit towns with highly reflective
signs.
130
Lights and visibility
● Other in s
uffic
iently lit road users (such as
pedestrians or cyclists).
● On tight bends and steep slopes (bumps)
and when oncoming
vehicles are partially ob-
scured.
● When the drivers of other oncoming vehi-
cle
s (such as a truck) can see over a guard
rail in the centre of the road.
● If the camera is damaged or the power sup-
ply i
s cut off.
● In fog, snow and heavy rain.
● With dust and sand turbulence.
● With loose gravel in the field of vision of
the camera.
● When the fiel
d of vision of the camera is
mist
ed up, dirty or covered by stickers, snow,
ice, etc. WARNING
The convenience features of the main beam
as s
ist should not encourage the taking of
risks. The system is not a replacement for
driver concentration.
● You are always in control of the main beam
and adaptin
g it to the light, visibility and traf-
fic conditions.
● It is possible that the main beam headlight
contro
l does not recognise all driving situa- tions and is limited under certain circumstan-
ce
s.
● When the fiel
d of vision of the camera is
dirty, c
overed or damaged, operation of the
main beam control may be affected. This also
applies when changes are made to the vehi-
cle lighting system, for example, if additional
headlights are installed. CAUTION
To avoid affecting the operation of the sys-
t em, t ak
e the following points into considera-
tion:
● Clean the field of vision of the camera regu-
larly and m
ake sure it is free of snow and ice.
● Do not cover the field of vision of the cam-
era.
● Check
that the windscreen is not damaged
in the area of
the field of vision of the camera. Note
Main beam and headlight flasher can be
turned on and off m
anually at any time with
the turn signal and main beam lever
››› page 129. Fog lights
The warning lamps
or also sho w
, on the
light switch or instrument panel, when the
fog lights are on.
● Switching on front fog lights* : pul
l the
light switch to the first point 1 , from posi-
tions
, or .
● Switching on the rear fog light : com-
pl
etely pull the light switch 2 from position
, or .
● T
o switch off the fog lights, press the light
swit c
h or turn it to position .
Cornering lights* 1) When turning slowly or on very tight bends,
the c
ornerin
g lights
are activated automati-
cally. The cornering lights may be integrated
in the fog lights and are switched on only at
speeds of less than 40 km/h (25 mph).
When reverse gear is engaged, the cornering
lights on both sides of the vehicle switch on,
in order to better illuminate the area for park-
ing. 1)
This function is not available on vehicles equipped
with f u
ll-LED headlights. 131
Technical data
Advice
Operation
Emergencies
Safety
Lights and visibility
Hazard warning lights Fig. 139
Dash panel: switch for hazard warn-
in g lights. Read the additional information carefully
› ›
›
page 26
The hazard warning lights are used to draw
the attention of other road users to your vehi-
cle in emergencies.
If your vehicle breaks down:
1. Park your vehicle at a safe distance from movin
g traffic.
2. Press the button to switch on the hazard warning lights
››› .
3. Switch the ignition off.
4. Apply the handbrake.
5. For a manual gearbox, engage 1st gear; for an aut
om
atic gearbox, move the gear
lever to P. 6. Use the warning triangle to draw the atten-
tion of other ro
ad users to your vehicle.
7. Always take the vehicle key with you when you le
ave the vehicle.
All turn signals flash simultaneously when
the hazard warning lights are switched on.
The two turn signal turn signal lamps
and the turn signal lamp in the switch will
flash at the same time. The hazard warning
lights also work when the ignition is switch-
ed off.
Emergency braking warning
If the vehicle is braked suddenly and continu-
ously at a speed of more than 80 km/h (50
mph), the brake light flashes several times
per second to warn vehicles driving behind. If
you continue braking, the hazard warning
lights will come on automatically when the
vehicle comes to a standstill. They switch off
automatically when the vehicle starts to
move again. WARNING
● The risk of
an accident increases if your ve-
hicle breaks down. Always use the hazard
warning lights and a warning triangle to draw
the attention of other road users to your sta-
tionary vehicle.
● Due to the high temperatures that the cata-
lytic con
verter can reach, never park in an
area where the catalytic converter could come into contact with highly inflammable materi-
al
s, f
or example dry grass or spilt petrol. This
could start a fire. Note
● The b atter
y will run down if the hazard
warning lights are left on for a long time,
even if the ignition is switched off.
● The use of the hazard warning lights de-
scribed her
e is subject to the relevant statu-
tory requirements. Parking lights
When the parking light is switched on, (right
or l
ef
t
turn signal), the front side light and
the rear light on the corresponding side of
the vehicle stay lit. The parking lights can on-
ly be activated with the ignition switched off
and the turn signal and main beam lever in
the central position, before being triggered.
Parking light on both sides With the ignition switched off and the light
sw
it
c
h in position , when locking the vehi-
cle from the outside, the parking lights on
both sides of the vehicle light up. In doing
so, only the side lights of both headlights
light up, and additionally the tail lights will
do so partially.
133
Technical data
Advice
Operation
Emergencies
Safety
Driver assistance systems
Brake assist system
The br ak
e a
ssist system can reduce the re-
quired braking distance. The braking force is
automatically boosted if you press the brake
pedal quickly in an emergency. You must
keep pressing the brake pedal until the dan-
ger has passed.
Traction control system (ASR)
In the event of wheelspin, the traction control
system reduces the engine torque to match
the amount of grip available. This helps the
car to start moving, accelerate or climb a gra-
dient.
Electronic differential lock (EDL)
When the EDL detects wheelspin, it brakes
the spinning wheel and directs the power to
the other driven wheel. This function is active
up to approximately 100 km/h.
To prevent the disc brake of the braked wheel
from overheating, the EDL cuts out automati-
cally if subjected to excessive loads. The ve-
hicle can still be driven. The EDL will switch
on again automatically when the brake has
cooled down.
Tractor-trailer sway mitigation*
If the vehicle is pulling a trailer, it will control
the following: Tractor-trailers tend to sway.
When the swaying of the trailer is felt by the
vehicle and detected by the ESC, it will auto- matically brake the towing vehicle within the
limits of the sy
stem and mitigate the sway.
Tractor-trailer sway mitigation is not available
in all countries.
Electronic torque management (XDS)
When taking a curve, the driveshaft differen-
tial mechanism allows the outer wheel to turn
at a higher speed than the inner wheel. In
this way, the wheel that is turning faster (out-
er wheel) receives less drive torque than the
inner wheel. This may mean that in certain
situations the torque delivered to the inner
wheel is too high, causing the wheels to
spin. On the other hand, the outer wheel is
receiving a lower drive torque than it could
transmit. This causes an overall loss of lateral
grip on the front axle, resulting in understeer
or “lengthening” of the trajectory.
The XDS system can detect and correct this
effect via the sensors and signals of the ESC.
Via the ESC, the XDS will brake the inside
wheel and counter the excess driving torque
of that wheel. This means that the driver's
desired trajectory is much more precise.
The XDS system works in combination with
the ESC and is always active, even when ASR
traction control is disconnected, or the ESC in
Sport mode or disconnected. Multi-collision brake
In an accident, the mu
lti-collision brake can
help the driver by braking to avoid the risk of
skidding during the accident, which could
lead to further collisions.
The multi-collision brake works for front, side
or rear accidents, when the airbag control
unit records its activation level and the acci-
dent takes place at a speed of over 10 km/h
(6 mph). The ESC automatically brakes the
vehicle, as long as the accident has not dam-
aged the ESC, the brake hydraulics or the on-
board network.
The following actions control automatic brak-
ing during the accident:
● When the driver presses the accelerator,
the automatic
braking does not take place.
● When the braking pressure through press-
ing the brak
e pedal is greater than the sys-
tem’s braking pressure the vehicle will brake
automatically.
● Multi-collision braking will not be available
if ESC
is malfunctioning. WARNING
● The ESC, ABS, ASR, EDL, el ectr
onic self-
locking differential or selective torque control
systems cannot exceed the limits imposed by
the laws of physics. Always bear this in mind, » 179
Technical data
Advice
Operation
Emergencies
Safety
Operation
Several warning and indication lamps light
up f or a f
ew sec
onds when the ignition is
switched on, signalling that the function is
being verified. They will switch off after a few
seconds.
Displayed on the CCS screen
Status Fig. 192:
CCS temporarily switched off. The set
speed is displayed in small figures.
System error. Contact a specialised work-
shop.
CCS switched on. The speed memory is
empty.
The CCS is switched on. The set speed is
displayed in large figures. WARNING
Use of the cruise control could cause acci-
dents and sev
ere injuries if it is not possible
to drive at a constant speed maintaining the
safety distance.
● Do not use the cruise control in heavy traf-
fic, if the dis
tance from the vehicle in front is
insufficient, on steep roads, with several
bends or in slippery circumstances (snow,
ice, rain or loose gravel), or on flooded roads.
● Never use the CCS when driving off-road or
on unpav
ed roads.
● Always adapt your speed and the distance
to the v
ehicles ahead in line with visibility, A
B
C
D weather conditions, the condition of the road
and the traffic
s
ituation.
● To avoid unexpected operation of the cruise
contro
l system, turn it off every time you fin-
ish using it.
● It is dangerous to use a set speed which is
too high for the pr
evailing road, traffic or
weather conditions.
● When travelling down hills, the CCS cannot
maintain a c
onstant speed. The vehicle tends
to accelerate under its own weight. Select a
lower gear or use the foot brake to slow the
vehicle. WARNING
Observe the safety warnings ›››
in Warning
and indication l amp
s on page 109. Operating the cruise control system*
Read the additional information carefully
› ›
›
page 40
The value indicated in the table in brackets
(in mph, miles per hour) only refers to instru-
ment panels with indications in miles.
Changing gear in CCS mode
The CCS decelerates as soon as the clutch
pedal is pressed, intervening again automati-
cally after a gear is engaged. Travelling down hills with the CCS
When travel
ling down hills the CCS cannot
maintain a constant speed. Slow the vehicle
down using the brake pedal and reduce
gears if required.
Automatic off
The cruise control system (CCS) is switched
off automatically or temporarily:
● If the system detects a fault that could af-
fect the w
orking order of the CCS.
● If you press and maintain the accelerator
pedal f
or a certain time, driving faster than
the stored speed.
● If the dynamic driving control systems in-
terv
ene (e.g. ASR or ESC).
● If the airbag is triggered.
186
Driver assistance systems
Special driving situations Fig. 200
(A) Vehicle on a bend. (B) Motorcy-
c li
s
t ahead out of range of the radar sensor. Fig. 201
(C) Vehicle changing lanes. (D) One
v ehic
l
e turning and another stationary. The adaptive cruise control (ACC) has certain
ph
y
s
ical limitations inherent in the system.
For example, certain reactions of the ACC, in
certain circumstances, may be unexpected or
come late from the driver's point of view. So
pay attention in order to intervene if necessa-
ry.
For example, the following traffic situations
call for the utmost attention:
Deceleration until the vehicle has stopped
(only vehicles with automatic gearbox)
If the vehicle in front slows down and stops,
the ACC will also slow down and halt the ve-
hicle. After approximately 3 seconds the sys- tem will inform the driver that he or she
should t
ake control of the vehicle by means
of an audible and visual warning on the in-
strument panel.
Starting driving after a stopping phase (only
vehicles with automatic gearbox)
After a stopping phase the ACC may begin
driving automatically when the vehicle in
front drives off.
Overtaking
When the turn signal lights up before the ve-
hicle begins an overtaking manoeuvre, the
ACC accelerates the vehicle automatically
and thus reduces the distance from the vehi-
cle in front.
When the vehicle enters the overtaking lane,
if the ACC does not detect another vehicle in
front, it accelerates until it reaches the pro-
grammed speed and maintains it.
System acceleration can be interrupted at
any time by pressing the brake or moving the
third lever backwards ››› page 190.
Driving through a bend
On entering or exiting bends, the radar sen-
sor may no longer determine the vehicle in
front or react to a vehicle in the adjacent lane
››› Fig. 200 A. In these situations the vehicle
may brake unnecessarily or fail to react to re-
act to the vehicle in front. In this case, the »
195
Technical data
Advice
Operation
Emergencies
Safety