
The essentials
Replacing a blown fuse Fig. 60
Image of a blown fuse. Fig. 61
Removing or fitting a fuse Preparation
● Switch off the ignition, lights and all elec-
tric al
equipment
.
● Open the corresponding fuse box
›››
page 43 Identifying a blown fuse
A fuse i
s blown if its metal strip is ruptured
››› Fig. 60.
● Point a lamp at the fuse to see if it has
blown.
T
o replace a fuse
● If necessary, remove the plastic pincers
from the fu
se box cover.
● Small fuses: lock the pinc
er in from above
››› Fig. 61 A.
● Larger fuses : move the pinc
er sideways
over the fuse ››› Fig. 61 B.
● Remove the relevant fuse.
● Replace the blown fuse by one with an
identica
l amperage rating (same colour and
markings) and identical size.
● Replace the cover.
Bulbs Bul
bs (12 V) Full-LED headlights are designed to last the
lif
etime of
the c
ar and light bulbs cannot be
replaced. In case of headlight failure, go to
an authorised workshop to have it replaced.
Light source used for each function
Halogen headlights.Type
Dipped beam headlightsH7 LL
Main beam headlights/day-
time running lights (DRL)H15 (double element)
Side lightsW5W
Turn signalPY21W NA LL
AFS bi-xenon main head-
lightType
Daytime running lights (DRL)P21W SLL
Side lightsW5W
Turn signalPY21W NA LL
Dipped beam / Main beamXenon bulb. Visit an
authorised workshop
for replacement.
Front fog lightType
Fog lightsHB4
LED rear lightsType
Side/brake lightLED
Turn signalWY21W
Reverse lightsW16W 44

The essentials
How to jump start: description Fig. 74
Diagram of connections for vehicles
w ithout
Start-Stop system. Fig. 75
Diagram of connections for vehicles
w ith
St
art-Stop system. Jump lead terminal connections
Swit
c
h off the ignition of both vehicles
››› .
1. Connect one end of the
re
d
jump lead to
the positive + terminal of the vehicle
w ith the fl
at
battery A
› ››
Fig. 74
.
C
onnect the other end of the red jump
lead to the positive terminal + in the
v ehic
l
e providing assistance B .
F or
vehicles without Start-Stop system:
connect one end of the black jump lead
to the negative terminal – of the vehi-
c l
e pr
oviding the current B
› ››
Fig. 74
.
F
or vehicles with Start-Stop system: con-
nect one end of the black jump lead X to a suitable ground terminal, to a solid
piec
e of
met
al in the engine block, or to
the engine block itself ››› Fig. 75.
Connect the other end of the black jump
lead X to a solid metal component bol-
t ed t
o the en
gine block or to the engine
block itself of the vehicle with the flat
battery. Do not connect it to a point near
the battery A .
P o
s
ition the leads in such a way that
they cannot come into contact with any
moving parts in the engine compart-
ment.
Starting Start the engine of the vehicle with the
boosting battery and let it run at idling
speed.
2.
3.
4a.
4b.
5.
6.
7.
Start the engine of the vehicle with the
flat b
attery and wait for 2 or 3 minutes
until the engine is running.
Removing the jump leads Before you remove the jump leads,
switch off the dipped beam headlights if
they are switched on.
Turn on the heater blower and heated
rear window in the vehicle with the flat
battery. This helps minimise voltage
peaks which are generated when the
leads are disconnected.
When the engine is running, disconnect
the leads in reverse order to the details
given above.
Make sure the battery clamps have sufficient
metal-to-metal contact with the battery termi-
nals.
If the engine fails to start after about 10 sec-
onds, switch off the starter and try again after
about 1 minute. WARNING
● Ple a
se note the safety warnings referring to
working in the engine compartment
››› page 271.
● The battery providing assistance must have
the same v
oltage as the flat battery (12V) and
approximately the same capacity (see imprint
on battery). Failure to comply could result in
an explosion. 8.
9.
10.
11.
54

Fuses and bulbs
Several warning and control lamps light up
f or a f
ew sec
onds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds.
Checking the bulbs of a trailer
For vehicles with the factory fitted towing
bracket, certain trailer lights are also control-
led if the power socket is correctly connected.
A fault on a trailer turn signal is indicated on
the instrument panel by the turn signal blink-
ing twice as fast ( or ) ››› page 130.
● General fault of all turn signals on one side.
● Fault in one rear light (on some models, al-
so the regi
stration light).
● Fault in two brake lights. WARNING
Observe the safety warnings ›››
in Control
and warnin g l
amps on page 107. Note
A fault in the LED on the rear lights will not be
indicat ed. Ho
wever, if the fault affects all the
LEDs then this will be indicated by the control
lamp . To replace halogen headlight bulbs
Fig. 104
In the engine compartment: left-
h and s
ide he
adlight lining. A dipped beam
he a
dlights, B daytime driving lights and
C main beam headlights and side lights
Fig. 105
Left headlight. There is no need to remove the headlight to
r
ep
l
ace bulbs.
Complete operations only in the sequence
given:
Turn signals (small bulb holder)
1.Open the bonnet ››› page 271.
2.Rotate the bulb holder 1 to the left all the way
and pull it out backwards together with the bulb.
3.Depending on the model, the bulb is removed di-
rectly from the bulb holder or it may need to be ro-
tated and then removed.
4.Replace the faulty bulb with a new identical bulb.
5.Place the bulb holder in the headlight and rotate
to the right all the way.
Dipped beam A and daytime lights B
1.Open the bonnet
››› page 271.
2.Remove the rubber cover on the rear of the head-
light.
3.Rotate the bulb holder to the left all the way and
pull it out backwards together with the bulb.
4.Depending on the model, the bulb is removed di-
rectly from the bulb holder or it may need to be ro-
tated and then removed.
5.Replace the faulty bulb with a new identical bulb.
6.Place the bulb holder in the headlight and rotate
to the right all the way.
7.Insert the rubber cover.» 93
Technical data
Advice
Operation
Emergencies
Safety

Fuses and bulbs
Replacing the front bumper bulbs Fig. 108
On the right-hand side of the front
b umper: r
emo
ving the headlights. Fig. 109
Changing the bulbs in the head-
lights Complete operations only in the sequence
giv
en:
1.Pull the cover forwards, in the direction of the ar-
row
››› Fig. 108.
2.Unscrew the attachment screw ››› Fig. 108 1 us-
ing the screwdriver from the vehicle tool kit
››› page 83.
3.Tilt the headlight slightly forward and extract it
from its lateral attachments ››› Fig. 109 (small ar-
rows).
4.Release the connector ››› Fig. 109 1 and remove
it.
5.Rotate the bulb holder ››› Fig. 109 2 to the left all
the way, in the direction of the arrow, and pull it
out backwards together with the bulb.
6.Replace the faulty bulb with a new identical bulb.
7.Place the bulb holder in the headlight and rotate
to the right all the way.
8.Insert the connector ››› Fig. 109 1 on the bulb
holder 2. The connector must audibly click into
place.
9.Place the headlight into its position ››› Fig. 109
(small arrows) and tilt it backwards.
10.Tighten the attachment screw ››› Fig. 108 1 us-
ing the screwdriver.
11.Replace the cover on the bumper ››› Fig. 108. Replacing the rear lid bulbs
Fig. 110
On the rear lid: Remove the cover. Fig. 111
On the rear lid: remove the bulb-
ho l
der
. Complete operations only in the sequence
giv
en:
1.Open the rear lid
››› page 124.» 95
Technical data
Advice
Operation
Emergencies
Safety

Lights and visibility
It lights up
Left or right turn sig-
nal.
The control lamp flash-
es twice as fast when a
vehicle or trailer turn
signal is faulty.
If necessary, check the vehicle
and trailer lighting.
It lights up
Main beam on or flash-
er on.›››
page 131.
It lights up
Headlight adjustment
(Light Assist) on.›››
page 132. Several warning and control lamps light up
f
or a f
ew sec
onds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds. WARNING
Observe the safety warnings ›››
in Control
and warnin g l
amps on page 107. Switching lights on and off
Read the additional information carefully
› ›
›
page 25 The driver is personally responsible for the
correct
use and adjustment of the lights in all
situations.
In vehicles with tow hitch fitted as standard:
if the trailer is connected electrically and is
fitted with a rear fog light, the vehicle’s fog
light is automatically switched off.
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 131.
● When the light switch is in position . 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.
● Always use your dipped beam head lights if
it is
raining or if visibility is poor. WARNING
If the headlights are set too high and the
main be am i
s not used correctly, there is a
risk of dazzling or distracting other road
users. This could result in a serious accident. ●
Alw a
ys make sure that the headlights are
correctly adjusted.
● Never use the main beam or headlight
flasher when it
can dazzle others on the road. Note
The legal requirements regarding the use of
v ehic l
e lights in each country must be ob-
served. Turn signal and main beam lever
Read the additional information carefully
› ›
›
page 26
Convenience turn signals
For the one-touch signalling, when the igni-
tion is switched on, move the lever as far as
possible upwards or downwards and release
the lever. The turn signal will flash three
times.
The control turn signals are switched on and
off from the menu Lights & Visibility
on the instrument panel display
››› page 27. This function can be discon-
nected at a specialised workshop for those
vehicles which do not have the menu
Lights & Visibility .»
131
Technical data
Advice
Operation
Emergencies
Safety

Operation
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 ››› page 83.
● If a turn signal on the vehicle or trailer is
faulty
, the warning lamp flashes twice as fast
as usual.
● The main beam headligh
ts can only be
switched on if the dipped beam headlights
are already on. Lights and visibility: functions
Parking light
When the p ark
in
g light is switched on, (right
or left turn signal), the front side light and
the rear light on the corresponding side of
the vehicle stay lit. The parking lights will on-
ly work with the ignition off.
Daytime running lights
The daytime running lights reduce the risk of
accidents by increasing the visibility of the
vehicle. These are independent lights that
are built into the headlights and come on each time the ignition is turned on if the light
switc
h is in position or 0.
When the light switch is in position , a
photo sensor automatically turns the instru-
ment and switch lighting on and off.
Automatic dipped beam control
The automatic dipped beam control is merely
intended as 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 ››› :
Automatic switching
onAutomatic switching
off or switch to day-
time running lighting
The photo sensor detects
darkness, for example,
when driving through a
tunnel.When adequate lighting is
detected.
The rain sensor detects
rain and activates the
windscreen wipers.When the windscreen wip-
er has been inactive for a
few minutes.
Adaptive headlights (AFS)
The a
d
aptiv
e headlights only operate when
the dipped beam is on and at speeds of over
10 km/h (6 mph). On bends, the adaptive
headlights automatically improve lighting on
the road ahead. The adaptive headlights can be switched on
and off from the inf
otainment system.
Static cornering lights
When turning slowly to change direction or
going round a tight bend, the static cornering
lights automatically come on. The static cor-
nering lights only work at speeds of less than
40 km/h (25 mph).
The static cornering lights may be incorpora-
ted into the fog lights or the front headlights,
depending upon the equipment. 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.
● Never drive with 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, if it is rain-
ing or in conditions of poor visibility. 132

Lights and visibility
Headlight adjustment Headlight adjustment (Light Assist)
The hea
dlight
adjustment automatically con-
nects and disconnects these lights depend-
ing on the environmental and traffic condi-
tions and on the speed, within the limitations
of the system ››› . This is monitored by a
sensor loc at
ed on the inside of the wind-
screen, above the interior rear vision mirror.
The automatic headlight adjustment auto-
matically switches on the lights depending
on the vehicles travelling in front and in the
opposite direction, and on other environmen-
tal and traffic conditions from an approxi-
mate speed of 60 km/h (37 mph) and turns
them off again at speeds below approximate-
ly 30 km/h (18 mph).
Switching on and off
Action
Switching
on:
– With the ignition on, turn the lights
control to the position and put the
turn signal and main beam lever in the
main beam position ››› page 131. When
the headlight adjustment (automatic
lights also) is activated, the warning
lamp lights up in the dash panel display
.
Switching
off:
– Disconnect the on button.
– OR: turn the lights control to a differ-
ent position to
››› page 131.
–OR: place the turn signal and main
beam lever in the headlight flasher or
main beam position ››› page 131. The following conditions can cause the head-
light a
dju
stment to fail to turn off the main
beam or fail to do so in time:
● On roads with insufficient lighting with very
reflectiv
e signs
● If road users are insufficiently lit up, e.g.
pedes tri
ans or cyclists.
● On closed curves, when the traffic in the
oppos
ite direction is partially hidden, on pro-
nounced slopes
● On roads with traffic in the opposite direc-
tion and with a centr
al reservation barrier
where the driver can see through gaps or
over it e.g. lorry drivers.
● If the camera is damaged or if the power
supp
ly has been cut off
● In the event of fog, snow or heavy rain
● In the event of dust or sand storms
● If the windscreen is damaged by the impact
from a st
one in the camera's field of vision
● If the camera's field of vision is misted up,
dirty or c
overed by a sticker, snow or ice. WARNING
The greater comfort that the headlight ad-
jus tment
provides (automatic also) must not
cause you to take risks. The system is not a
replacement for driver awareness.
● Always monitor the lights yourself and ad-
just
them depending on the light, visibility
and traffic conditions.
● The headlight adjustment (automatic also)
may
not correctly detect all situations and in
certain situations may only provide limited
function.
● If the windscreen is damaged or modifica-
tions ar
e made to the vehicle lighting, this
may harm the functioning of the headlight
adjustment (automatic lights also), for exam-
ple, if additional headlight are fitted. Note
Main beam and flashed headlights can be
turned on and off m
anually at any time with
the turn signal and main beam lever
››› page 131. “Coming home” and “Leaving home”
f
u
nction (guid
ance lights) The “Coming home” function should be
sw
it
c
hed on manually. However the “Leav-
ing home” function is automatically control-
led by a photo sensor. »
133
Technical data
Advice
Operation
Emergencies
Safety

Operation“Coming home”: necessary operations
To switch
system on:
– Switch off the ignition.
– Briefly flash the headlights
for approxi-
mately one second ››› page 131.
The “Coming home” lighting comes on
when the driver door is opened. The de-
lay in switching off the headlights is
counted from when the last door or boot
hatch is closed.
To switch
system off:
– Automatically at the end of the delay
period.
– Automatically, if 30 seconds after com-
ing on, a vehicle door or the boot hatch
remains open.
– When the light switch is turned to posi-
tion
.
– When the ignition is switched on.
“Leaving home”: necessary operations
To switch
system on:– Unlock the vehicle when the light
switch is in position and the photo
sensor detects darkness.
To switch
system off:
– Automatically, at the end of the delay
period.
– When the vehicle is locked.
– When the light switch is turned to posi-
tion
.
– When the ignition is switched on. Lighting around the exterior mirrors
The lightin
g ar
ou
nd the exterior mirrors illu-
minates the door area on entering and leav-
ing the vehicles. It comes on when the vehi-
cle is unlocked, when the vehicle door is opened and when the “Coming home” or
“Leav
ing home” function is switched on. If
the equipment includes the light sensor, the
lighting around the exterior mirrors only
comes when it is dark. Note
● The time tak en f
or the headlights to go off
can be changed in the Lights & Visibil- ity menu and the function can be switched
on or off ›››
page 27.
● When the “Coming home” function is on, if
the vehic
le door is opened there is no audible
warning signal to advise that the light is still
on. Hazard warning lights
Fig. 139
In the centre of the dash panel: push
b utt
on f
or hazard warning lights. Read the additional information carefully
› ›
›
page 26 Always fulfil legal requirements for securing a
broken do
wn vehicle. In a number of coun-
tries it is now obligatory, for example, to turn
on the hazard warning lights and use a re-
flective safety vest ››› page 83.
When being towed with the hazard warning
lights on, a change in direction or traffic lane
can be indicated as usual using the turn sig-
nal lever. The hazard lights will be interrup-
ted temporarily.
If your vehicle breaks down:
Park the vehicle a safe distance from
traffic and on suitable ground ››› .
T urn on the h
az
ard warning lights with
the button ››› Fig. 139.
Connect the electronic parking brake
››› page 188.
Move the selector lever to its intermedi-
ate position or to P ››› page 193.
Stop the engine and remove the key
from the ignition ››› page 183.
Have all occupants leave the vehicle and
move to safety, for example behind a
guard rail.
When leaving the vehicle, take all keys
with you.
Place an emergency warning triangle to
indicate the position of your vehicle to
other road users.
1.
2.
3.
4.
5.
6.
7.
8.
134