Fuses and bulbsNo.Consumer
24Air conditioning fan, heating, control unit for air
conditioning, heating
26Front seat heating switch.
27Rear window wiper
29Airbag
30
Electric windows, reversing light switch, air con-
ditioning control unit, Park Assist control unit,
exterior mirror, power supply for middle button
bar, power supply for the side button bar, interi-
or mirror
31Fuel pump, radiator fan control unit, cruise con-
trol, relay coil for the windscreen and rear win-
dow washer system, switch for the lights
32Diagnostics socket, headlight range regulator,
control lever under the steering wheel, ambient
lighting regulator
33Ignition relay coil, clutch pedal switch
34Heatable washer jets of windscreen washer
36USB charging socket
37Radar
39Additional electric heating
41Rear window heater
42Electric windows - passenger
43Towing bracket - Connector contact
No.Consumer
4412 V connection in the interior, 12 V connection
in the boot
45Rear right window
46Windshield and front window washing system,
control lever under the steering wheel
47Towing bracket - Connector contact
48Towing bracket - Right hand light
49Fuel pump control unit
50Radio
51Heat for exterior mirrors
52Keyless Access
53Steering lock (Keyless Access)
54ABS/ESC control unit
56Diagnosis
59Full LED
Fuses in the engine compartment
Fig. 87
In the engine compartment: fuse box
c o
v
er - 1st variant » 83
Technical data
Advice
Operation
Emergencies
Safety
Emergencies
Fig. 88
In the engine compartment: fuse box
c o
v
er - 2nd variant Read the additional information carefully
› ›
›
page 44
Only replace fuses with a fuse of the same
amperage (same colour and markings) and
size.
Opening the fuse box ● Open the bonnet ›››
page 204.
● Press lid locking clip upwards in the direc-
tion of the arro
w 1
› ›
› Fig. 87 o ››› Fig. 88. ●
Open the cov
er in the direction indicated
by the arrow 2 .
● Remove the plastic clip from the lid of the
f u
se bo
x.
● Replace the appropriate fuse.
● Place the plastic clip back in its original po-
sition.
● Plac
e the lid on the fuse box and press un-
til
you hear it click into place.
Fuse placement
No.Consumer
1Radiator fan
2Control unit for the glow system
3ABS/ESC control unit
4Additional electric heat - Circuit 2
5Additional electric heat - Circuit 3
6Automatic gearbox
7Engine control unit
8Front windscreen wipers
9Central control unit, battery data module
10ABS/ESC control unit
12Engine components
13Brake pedal switch
No.Consumer
14Engine components, fuel coil relay, radiator fan,
coolant pump
15Engine control unit
16Starter motor
17Engine control unit
18Engine components, additional electric heat re-
lay coils
19Lambda probe
20Control devices for the glow system, heating of
the sump fan Changing bulbs
Intr oduction Read the additional information carefully
› ›
›
page 45.
Depending on how equipped the vehicle is,
there are different sets of headlights and tail
lights:
● Halogen main headlights (double head-
light).
● Full-LED main headlights*.
● Rear bulb light.
● LED rear light*.
84
Fuses and bulbs
Full-LED headlight system*
F u
l
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.
Double headlight bulb change
Changing bulbs requires a certain degree of
practical skill. If in doubt, we recommend you
have defective bulbs changed by a special-
ised service or, in case of an emergency,
seek professional assistance.
● Switch off the ignition and all of the lights
before c
hanging a bulb.
● Do not touch the glass part of the bulb with
your bar
e hands. The fingerprints left on the
glass will vaporise as a result of the heat gen-
erated by the bulb, reducing bulb life and
causing condensation on the reflector sur-
face, thus reducing effectiveness.
● A bulb must only be replaced by one of the
same type. The type i
s indicated on the bulb,
either on the glass part or on the base.
● There is a storage area for the bulb box in
the spar
e wheel well or below the carpet in
the luggage compartment. 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 parts in the head-
light 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. For the sake of the environment
Please ask your specialist retailer how to dis-
pose of u
sed bulbs in the proper manner. Note
● Dependin g on w
eather conditions (cold or
wet), the front lights, the fog lights, the rear
lights and the turn signals may be temporari-
ly misted. This has no influence on the useful
life of the lighting system. By switching on
the lights, the area through which the beam
of light is projected will quickly be demisted.
However, the edges may continue to be mis-
ted. ●
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. Otherwise, the fingerprints left on
the glass will vaporise as a result of the heat
generated by the bulb, they will be deposited
on the reflector and damage its surface. Double headlight bulbs
Fig. 89
Main headlight bulbs. Installation position of double headlight
b
u
l
bs
Side lights
Main beam headlights »
A B
85
Technical data
Advice
Operation
Emergencies
Safety
Operation
Instruments and warning lamps
In s
trument
s
View of instrument panel Fig. 111
Instrument panel, on dash panel. Details of the instruments
››
›
Fig. 111:
Rev counter (with the engine running, in
hundreds of revolutions per minute).
The beginning of the red zone of the rev
counter indicates the maximum speed in
any gear after running-in and with the en-
gine hot. However, it is advisable to
change up a gear or move the selector
lever to D (or lift your foot off the acceler-
1 ator) before the needle reaches the red
z
one
›
›
› .
En gine c
oo
lant temperature display
››› page 207.
Displays on the screen .
Adjuster button and display
››› page 99.
Speedometer.
2 3
4
5 Fuel gauge
› ››
p
ag e 100. WARNING
Any distraction may lead to an accident, with
the risk of
injury.
● Do not operate the instrument panel con-
trol
s when driving. 6
96
Instruments and warning lamps
CAUTION
● To pr ev
ent damage to the engine, the rev
counter needle should only remain in the red
zone for a short period of time.
● When the engine is cold, avoid high revs
and heavy ac
celeration and do not make the
engine work hard. For the sake of the environment
Changing up a gear in time reduces fuel con-
sumption and noi se.Rev counter
The rev counter indicates the number of en-
gine r
ev
o
lutions per minute ›››
Fig. 111 1 .
T og
ether w
ith the gear-change indicator, the
rev counter offers you the possibility of using
the engine of your vehicle at a suitable
speed.
The start of the red zone on the dial indicates
the maximum engine speed which may be
used briefly when the engine is warm and af-
ter it has been run in properly. Before reach-
ing this range, you should change to a higher
gear for vehicles with a manual gearbox or for
automatic gearboxes put the selector lever in
“D” or take your foot off the accelerator ped-
al. We recommend that you avoid high revs and
that
you follow the recommendations on the
gear-change indicator. Consult the additional
information in ›››
page 29. CAUTION
Never allow the rev counter needle 1 ›››
Fig. 111 to g o int
o the red zone on the
scale for more than a very brief period, other-
wise there is a risk of engine damage. For the sake of the environment
Changing up a gear early will help you to save
fuel and minimi
se emissions and engine
noise. Indications on the display
A variety of information can be viewed on the
in
s
trument
panel display ›››
Fig. 111 3 de-
pendin g on the
v
ehicle equipment:
● Bonnet, rear lid and doors open
›››
page 28.
● Information and warning texts.
● Mileage.
● Time.
● Navigation instructions.
● Outside temperature.
● Compass. ●
Shift l
ever position ››› page 162.
● Recommended gear (manual gearbox)
›››
page 29.
● Multifunction display (MFD) and menus
with differ
ent setting options ›››
page 23.
● Service interval display ›››
page 31.
● Second speed display ›››
page 98.
● Speed warning function ›››
page 30.
● Start-Stop system status display
›››
page 183.
● Low consumption driving status (ECO)
›››
page 98
● Engine code (MKB) ›››
page 98.
Distance travelled
The odometer registers the total distance
travelled by the car.
The odometer (trip ) shows the distance
travelled since the last odometer reset. The
last digit of the trip recorder indicates distan-
ces of 100 metres or one tenths of a mile.
● Briefly press the button ›››
Fig. 111 4 to re-
set the trip r
ec
order to 0.
● Keep the button 4 pressed for about 3
sec ond
s
and the previous value will be dis-
played. »
97
Technical data
Advice
Operation
Emergencies
Safety
Operation
Time
● To set the time, keep the button ››
› Fig. 111
4 pressed for more than 3 seconds to select
the hour or minut e di
s
play.
● To continue setting the time, press the up-
per or lower p
art of the button 4 . Hold but-
t on do
wn t
o scroll through the numbers
quickly.
● Press the button 4 again in order to finish
settin g the time.
The time c an al
so be set on the Easy Connect
system using the button and the function
b utt
on
SETTINGS > Date and time
››› page 21.
Compass
With the ignition on and the navigation sys-
tem on, the cardinal point corresponding to
the direction of travel of the vehicle is dis-
played on the instrument panel.
Selector lever position
The selected gear is displayed on the side of
the selector lever and on the instrument pan-
el display. In positions D and S, and with the
Tiptronic, the corresponding gear is also dis-
played. Recommended gear (manual gearbox)
The r
ecommended g
ear in order to save fuel
is displayed on the instrument panel while
you are driving ›››
page 29.
Second speed display (mph or km/h)
In addition to the speedometer, the speed
can also be displayed in a different unit of
measurement (in miles or in km per hour).
This option cannot be deactivated in models
destined for countries in which the second
speed must always be visible.
The second speed display can be adjusted in
the Easy Connect system by means of the button and the function button SETTINGS >
Units › ›
›
page 21.
Speed warning
When the speed setting is exceeded, this will
be indicated on the instrument panel display.
This is very useful, for example when using
winter tyres that are not designed for driving
at the maximum speed of the vehicle
››› page 30.
The speed warning settings can be adjusted
in the Easy Connect system by means of the button and the function button SET-
TINGS > Driver Assistance
› ›
›
page 21. Start-Stop operating display
Updat
ed information relating to the status is
displayed on the instrument panel
››› page 183.
Low consumption driving status (ECO)*
Depending on the equipment, when driving,
the “ECO ” display appears on the instrument
panel when the vehicle is in low consump-
tion status.
Identifying letters on engine (MKB)
Hold the button ››› Fig. 111 4 down for more
th an 15 sec
ond
s to display the identifying
letters of the vehicle engine (MKB). To do
this, the ignition must be switched on and
the engine switched off. WARNING
Observe the safety warnings ›››
in Control
and warnin g l
amps on page 101. WARNING
Even though outside temperatures are above
freez in
g, some roads and bridges may be icy.
● At outside temperatures above +4°C
(+39°F), even when the “ice c
rystal” symbol
is not visible, there may still be patches of ice
on the road.
● The outside temperature sensor takes a
guideline meas
urement.98
Instruments and warning lamps
Note
● Differ ent
versions of the instrument panel
are available and therefore the versions and
instructions on the display may vary. In the
case of displays without warning or informa-
tion texts, faults are indicated exclusively by
the warning lamps.
● Depending on the equipment, some set-
tings
and instructions can also be carried out
in the Easy Connect system.
● When several warnings are active at the
same time, the symbol
s are shown succes-
sively for a few seconds and will stay on until
the fault is rectified. Odometer
Fig. 112
Instrument panel: odometer and re-
set butt
on. The distance covered is displayed in “kilome-
tr
e
s” or mi
les “m”. It is possible to change the measurement units (kilometres
“km”/mile
s “m”) in the radio/Easy Connect*.
Please refer to the Easy Connect* Instructions
Manual for more details.
Odometer/trip recorder
The odometer shows the total distance cov-
ered by the vehicle.
The trip recorder shows the distance that has
been travelled since it was last reset. It is
used to measure short trips. The last digit of
the trip recorder indicates distances of 100
metres or tenths of a mile.
The trip recorder can be set to zero by press-
ing 0.0/SET
› ›
› Fig. 112
.
Fault display
If there is a fault in the instrument panel, the
letters DEF will appear in the trip recorder
display. Have the fault repaired immediately,
as far as is possible. Coolant temperature gauge Fig. 113
Instrument panel: coolant tempera-
t ur
e g
auge For vehicles with no coolant temperature
g
aug
e, a c
ontrol lamp appears when the
coolant temperatures is high ››› page 210.
Please note ››› .
The c oo
l
ant temperature gauge only works
when the ignition is switched on ››› Fig. 113.
In order to avoid engine damage, please read
the following notes for the different tempera-
ture ranges.
Engine cold
If only the diodes in the lower part of the
scale light up, this indicates that the engine
has not yet reached operating temperature.
Avoid high revs and heavy acceleration and
do not make the engine work hard. »
99
Technical data
Advice
Operation
Emergencies
Safety
Operation
Normal temperature
If in norm
al
operations, the diodes light up
until the central zone, it means that the en-
gine has reached operating temperature. At
high outside temperatures and when making
the engine work hard, the diodes may contin-
ue lighting up and reach the upper zone. This
is no cause for concern, provided the control
lamp does not light up on the instrument
panel digital display.
Heat range
When the LEDs light up in the upper area of
the display and the control lamp appears
on the instrument panel display, the coolant
temperature is too high ››› page 210. CAUTION
● To en s
ure a long useful life for the engine,
avoid high revs, driving at high speed and
making the engine work hard for approxi-
mately the first 15 minutes when the engine
is cold. The phase until the engine is warm al-
so depends on the outside temperature. If
necessary, use the engine oil temperature*
››› page 207 as a guide.
● Additional lights and other accessories in
front of
the air inlet reduce the cooling effect
of the coolant. At high outside temperatures
and high engine loads, there is a risk of the
engine overheating.
● The front spoiler also ensures proper distri-
bution of the c
ooling air when the vehicle is moving. If the spoiler is damaged this can re-
duce the c
oo
ling effect, which could cause
the engine to overheat. Seek specialist assis-
tance. Fuel level gauge
Fig. 114
Fuel gauge. The fuel gauge
››
›
Fig. 114 operates only
when the ignition is switched on.
The fuel tank has a capacity of approx. 55 li-
tres. When the needle reaches the fuel re-
serve area there are only approximately 7 li-
tres left in the tank. In the general instrument
panel a warning signal lights up and an
audible signal sounds.
The informative display indicates:
Refuel! Fuel range…km...(miles) CAUTION
Never completely empty the tank! An irregu-
larity in the f
uel supply system can cause ir-
regularities when the engine is running. Un-
burned fuel can reach the exhaust gas sys-
tem, which can cause deterioration of the cat-
alytic converter. Note
● Some v ehic
les come fitted with the fuel
gauge on the general instrument panel.
● The message on the display switches off
only af
ter refuelling and carrying out a short
journey. Control lamps
C ontr
o
l and warning lamps Read the additional information carefully
› ›
›
page 33.
The control and warning lamps are indicators
of warnings, ››› , faults
››
›
or certain func-
tion s.
Some c
ontrol and warning lamps come
on when the ignition is switched on, and
switch off when the engine starts running, or
while driving.
Depending on the model, additional text
messages may be viewed on the instrument
100