The essentials
Replacing a blown fuse Fig. 68
Image of a blown fuse. Preparation
●
Switch off the ignition, lights and all elec-
tric al
equipment
.
● Open the corresponding fuse box
›››
page 103.
Identifying a blown fuse
A fuse is blown if its metal strip is ruptured
››› Fig. 68.
● Point a lamp at the fuse to see if it has
blown.
T
o replace a fuse
● Remove the fuse.
● Replace the blown fuse by one with an
identica
l amperage rating (same colour and
markings) and identical size. ●
Repl
ace the cover again or close the fuse
box lid.
Bulbs Bul
bs (12 V) Note: Depending on the level of equipment
fitt
ed in the
vehicle, LEDs may be used for
part or all of the interior and/or exterior light-
ing. LEDs have an estimated life that exceeds
that of the vehicle. If an LED light fails, go to
an authorised workshop for its replacement.
Light source used for each function
Halogen headlights.Type
Daytime running light/side
lightLED (it cannot be re-
placed)
Dipped beam headlightsH7 LL
Main beam headlightsH7 LL
Turn signalPY21W
Full-LED main headlights
No bulbs may be replaced. All functions are with LEDs
Front fog lightType
Fog/cornering lights*H8
Rear lightsType
Brake light/tail lightP21W LL
Side lightsP21W LL
Turn signalPY21W LL
Retro fog lightP21W LL
Reverse lightsW16W
LED rear lightsType
Turn signalPY21W LL
Reverse lightsW16W
The remaining functions work with LEDs
›››
page 106 Action in the event of a punc-
t
ur
e
Wh
at to do first ●
Park the vehicle on a horizontal surface
and in a s af
e p
lace as far away from traffic as
possible.
● Apply the handbrake.
● Switch on the hazard warning lights.
● Manual gearbox: select the 1s
t gear.62
The essentials
Connect the other end of the blac
k 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.
Start the engine of the vehicle with the
flat battery 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.
5.
6.
7.
8.
9.
10.
11.
Make sure the battery clamps have sufficient
metal-to-met
al 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 298.
● 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.
● Never use jump leads when one of the bat-
teries
is frozen. Danger of explosion! Even af-
ter the battery has thawed, battery acid could
leak and cause chemical burns. If a battery
freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes
awa
y from batteries, danger of explosion.
Failure to comply could result in an explo-
sion.
● Observe the instructions provided by the
manufact
urer of the jump leads.
● Do not connect the negative cable from the
other vehic
le directly to the negative terminal
of the flat battery. The gas emitted from the
battery could be ignited by sparks. Danger of
explosion. ●
Never att ac
h the negative cable to fuel sys-
tem components or the brake lines in the oth-
er vehicle.
● The non-insulated parts of the battery
clamp
s must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the ve-
hicle, this can cause a short circuit.
● Position the leads in such a way that they
cannot c
ome into contact with any moving
parts in the engine compartment.
● Do not lean on the batteries. This could re-
sult
in chemical burns. Note
The vehicles must not touch each other, oth-
erw i
se electricity could flow as soon as the
positive terminals are connected. 70
Emergencies
●
Ple a
se note that the above lists, while cor-
rect at the time of printing, are subject to
change. Changing a bulb
Topic intr
oductionRead the additional information carefully
›› ›
page 62.
Changing bulbs requires a certain degree of
practical skill.
If you choose to change the engine compart-
ment lamps yourself, remember that it is a
dangerous area ››› in Working in the en-
gine c omp
ar
tment on page 299.
Always use identical bulbs with the same
designation. The name can be found on the
base of the bulb holder.
Depending on how equipped the vehicle is,
there are different sets of headlights and tail
lights:
● Halogen headlights.
● Full-LED main headlights*
● Rear bulb light
● LED rear light* Full-LED headlight system*
Ful
l-LED headlights handle all light functions
(daylight, side light, turn signal, dipped
beam and route light) with light emitting di-
odes (LEDs) as a light source.
Full-LED headlights are designed to last the
lifetime of the car and light bulbs cannot be
replaced. In case of headlight failure, go to
an authorised workshop to have it replaced. WARNING
● Tak e p
articular care when working on com-
ponents in the engine compartment if the en-
gine is warm. Risk of burns.
● Bulbs are highly sensitive to pressure. The
glas
s can break when you touch the bulb,
causing injury.
● When changing bulbs, please take care not
to injure
yourself on sharp edges, in particu-
lar on the headlight housing. CAUTION
● Remo v
e the ignition key before working on
the electric system. Otherwise, a short circuit
could occur.
● Switch off the lights and the parking light
before c
hanging a bulb.
● Take good care to avoid damaging any com-
ponents. For the sake of the environment
Please ask your specialist retailer how to dis-
pose of u
sed bulbs in the proper manner. Note
● Ple a
se check at regular intervals that all
lighting (especially the exterior lighting) on
your vehicle is functioning properly. This is
not only in the interest of your own safety,
but also that of all other road users.
● Before changing a bulb, make sure you
have the c
orrect new bulb.
● Do not touch the glass part of the bulb with
your bar
e hands, use a cloth or paper towel
instead, since the fingerprints left on the
glass will vaporise as a result of the heat gen-
erated by the bulb, they will be deposited on
the reflector and will impair its surface.
● Depending on the level of equipment fitted
in the vehic
le, LEDs may be used for part or
all of the interior and/or exterior lighting.
LEDs have an estimated life that exceeds than
that of the car. If an LED light fails, go to an
authorised workshop for its replacement. 106
Controls and displays
Operation
C ontr
o
ls and displays
General instrument panel Door release lever
Centr
al
locking switch . . . . . . . . . . . .128
Control for the electric adjustment
of the ext
erior mirrors . . . . . . . . . . . . . 155
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . 174
Control lever for:
– Turn s ign
als and main beam
headlights . . . . . . . . . . . . . . . . . . . . . 145
– Lane Ass i
st . . . . . . . . . . . . . . . . . . . . . 230
– Main beam a
ssist . . . . . . . . . . . . . . . 146
– Cruise c
ontrol system (CCS) . . . . .212
Depending on equipment fitted:
– Lev er f
or cruise control . . . . . . . . . .212
Steering wheel with horn and – Driver airbag . . . . . . . . . . . . . . . . . . . 21
– On-boar d c
omputer controls . . . .36
– Contro
ls for radio, telephone,
navigation and speech dialogue
system ›››
Booklet Radio
– Paddle levers for tiptronic gear-
shift (automatic gearbox) . . . . . . .195
Instrument panel . . . . . . . . . . . . . . . . . 114
1 2
3
4
5
6
7
8 Control lever for:
– Wind
s
creen wipers and washer . .153
– Wipe and wa
sh system . . . . . . . . . . 153
– On-board c
omputer . . . . . . . . . . . . . 36
Depending on equipment fitted: ra-
dio or disp
lay for Easy Connect
(navigation, radio, TV/video) . . . . . .120
Depending on the equipment, but-
tons
for:
– Start-Stop system . . . . . . . . . . . . . . . 208
– Park a
ssist system . . . . . . . . . . . . . . 262
– Hazard w
arning lights . . . . . . . . . .149
– Tyr
e pressure switch . . . . . . . . . . . .313
– Airbag off di
splay . . . . . . . . . . . . . . . 88
Depending on the equipment,
glov e c
ompartment with: . . . . . . . . .161
– CD pl a
yer* and/or SD card*
››› Booklet Radio
Front passenger airbag . . . . . . . . . . .21
Front passenger airbag switch . . . .88
Passenger seat heating control . . . .158
Depending on the equipment, con-
tro l
s for:
– Heating and ventilation system or
manual air conditioner . . . . . . . . . .54, 53
– Autom atic
air conditioner . . . . . . .51
Depending on the equipment:
– USB/A UX-IN inp
ut . . . . . . . . . . . . . . 123
9
10
11
12
13
14
15
16
17 –
Light er/po
w
er socket . . . . . . . . . . . 162
– Connectivity
Box/Wireless Charg-
er* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
– Storag
e compartment
Gear lever for: – Manual gearbox . . . . . . . . . . . . . . . . 192
– Automatic
gearbox . . . . . . . . . . . . . 193
Rotating control(Driving Experience
button) f
or driving modes . . . . . . . . .242
Auto Hold switch . . . . . . . . . . . . . . . . . 211
Electronic parking brake switch . . .186
Starter button (Keyless Access lock-
ing and ignition sys
tem) . . . . . . . . . . 183
Driver's seat heating control . . . . . .158
Ignition lock (vehicles without Key-
les
s Access) . . . . . . . . . . . . . . . . . . . . . . 181
Steering column adjustment lev-
er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Knee airbag . . . . . . . . . . . . . . . . . . . . . . 23
Bonnet lock release . . . . . . . . . . . . . . .299
Headlight range control . . . . . . . . . . .151
Headlight switch . . . . . . . . . . . . . . . . . 144
Electric windows . . . . . . . . . . . . . . . . . 139 Note
● Some of the equipment li
sted in this sec-
tion is only fitted on certain models or are op-
tional extras. » 18
19
20
21
22
23
24
25
26
27
28
29
30
113
Technical data
Advice
Operation
Emergencies
Safety
Operation
● If the s
u
nroof or sun blind will still not
close, visit a specialised workshop. WARNING
Closing the sunroof or sun blind without the
anti-trap f u
nction can cause serious injuries.
● Always be careful when closing the sunroof
and sun b
lind.
● No person should ever remain in the way of
the sunr
oof or sun blind, especially when
closing without the anti-trap function.
● The anti-trap function does not prevent fin-
gers
or other parts of the body from becom-
ing trapped against the roof frame and inju-
ries occurring. Lights and visibility
Light s
R el
ated video Fig. 142
Vehicle lights Side light and dipped beam headlight
Read the additional information carefully
› ›
›
page 30
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 parkin
g light is on ››› page 145.
● When the light switch is in position or
. WARNING
The side lights or daytime running 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 not
used 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. Note
The legal requirements regarding the use of
vehic l
e lights in each country must be ob-
served. 144
Lights and visibility
Daytime running lights The daytime running lights consist of individ-
ual lights, int
e
grated in the front headlights.
By connecting the daytime running lights,
these lights are switched on 1)
››› .
The da ytime ru
nning 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 running
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.
● On vehicles with rear lights with bulbs,
when activating the d
aytime running light
the rear lights are not switched on. A vehicle
which does not have the rear lights on may
not be visible to other drivers in the dark-
ness, in the case of heavy rain or in condi-
tions of poor visibility. Turn signal and main beam lever
Read the additional information carefully
›› ›
page 31
Push the lever all the way down to turn off
the corresponding function.
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.
One-touch signalling is activated and deacti-
vated in the Easy Connect system via the button and the function button SETTINGS >
Lights > One-touch signalling
› ›
›
page 33.
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. ●
Alw a
ys give warning when you are going to
change 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-
c ident 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.
● If a trailer turn signal malfunctions, the
contro
l 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. »1)
On vehicles equipped with rear LED lights, the rear
side light i
s switched on as well. 145
Technical data
Advice
Operation
Emergencies
Safety
Operation
●
In co l
d or damp weather conditions, the
headlights, 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
intended 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 145:
Automatic switching
onAutomatic switching
off
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-
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 autom atic
dipped beam control ( )
only switches on the dipped beam when
there are no changes in brightness, and not,
for example when it is foggy. Main beam assist*
Main beam assist (Light Assist)
The main be
am a
ssist 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 areas and deactivates the main
beam when passing through a town, for ex-
ample. Switching the main beam assist on and off
Func-
tionUse
Activate:
– 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 145. 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 po-
sition to
››› page 144.
– OR: with main beam on, move the main
beam and turn signal lever backwards.
– OR: move the main beam and turn the
signal 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.
● Other in
sufficiently lit road users (such as
pedestri
ans or cyclists).
● On tight bends and steep slopes (bumps)
and when oncoming
vehicles are partially ob-
scured.
146
Operation
Note
The rear fog light can dazzle drivers behind
you. Y
ou should use the rear fog light only
when visibility is very poor. Cornering lights*
1)When turning slowly or on very tight bends,
the cornerin
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.
“Coming home” function This function may be connected/disconnec-
t
ed thr
ough the r
adio menu. The “Coming
Home” and/or “Leaving Home” delay time
may also be set (default: 30 sec). Vehicle with halogen headlights
In the “Coming Home” f
unction, the daytime
running lights (DRL), the rear side lights and
the licence plate lights are turned on.
Vehicle with full-LED headlights
In the “Coming Home” function, the dipped
beams, the daytime running lights (DRL), the
rear side lights, the number plate lights and
the courtesy lights in the rear view mirror
(Welcome Light) switch on.
Automatic* activation of “Coming Home”
For vehicles with a light and rain sensor (rota-
ry light switch in position ).
● Switch off the engine and remove the key
from the ignition with the r
otary light switch
in position ›››
page 30.
● The automatic “Coming Home” function is
only activ
e when the light sensor detects
darkness.
● When the car door is opened, the “Coming
Home” lighting come
s on.
Manual “Coming Home” activation
For vehicles with a light and rain sensor (rota-
ry light switch without position ). ●
Switc
h off the engine and remove the key
from the ignition.
● Activate the headlight flashers for approxi-
mately
1 second.
● Activated for any position of the rotary light
switc
h.
● When the car door is opened, the “Coming
Home” lighting come
s on. The headlights are
turned off 60 seconds after the vehicle door
is opened.
Deactivation
● If no door has been closed, they go out au-
tomatic
ally after 60 seconds.
● After the last door has been closed, the
headlights
will be switched off after the
“Coming Home” delay (as established in the
radio menu) has elapsed.
● On turning the light switch to position
›››
page 30.
● When the ignition is switched on (when
star
ting the engine). 1)
This function is not available on vehicles equipped
with f u
ll-LED headlights.
148