Page 153 of 184

Fuses and light bulbs
Fuses
Introduction
Fig. 178
Blown fuse
This chapter contains information on the following subjects:
Fuses in the dashboard
151
Fuse arrangement in the dashboard
152
Fuses in the engine compartment
153
Fuse arrangement in the engine compartment
154
Individual electrical circuits are protected by fuses. A blown fuse is recognisa-
ble from the melted-through metal strip » Fig. 178.
WARNINGAlways read and observe the warning notes before completing any work in
the engine compartment » page 125, Engine compartment .
CAUTION
■
Replace the faulty fuse with a new one of the same amperage.■If a newly inserted fuse blows again after a short time, seek assistance from
a specialist garage.■
“Do not repair” the fuses and do not replace them with stronger fuses - dan-
ger of fire and damage to another electrical system.
Note
■ We recommend always carrying replacement fuses in the vehicle.■There can be several power consuming devices for one fuse. Multiple fuses
may exist for a single power consuming device.Fuses in the dashboardFig. 179
Remove the fuse box cover.
Read and observe and on page 151 first.
The fuses are located on the bottom of the dash panel behind a cover.
Replacing fuses
›
Remove the ignition key, turn off the lights and all electrical consumers.
›
Remove the cover of the fuse box » Fig. 179 in the direction of the arrow.
›
Remove the plastic clip from the holder in the fuse box cover.
›
Use the clip to pull the fuse out, then insert a new fuse.
›
Replace the bracket at the original position.
›
Insert the top edge of the cover into the dash panel first.
›
Push the lower edge of the cover in the region
A
.
151Fuses and light bulbs
Page 154 of 184

Fuse arrangement in the dashboardFig. 180
Fuses: LHD / RHD
Read and observe
and on page 151 first.
No.Power consumer1Light - left2Central locking, front and rear window washer system (only with
KESSY or heated windscreen)3Ignition4Light - right5Power windows - driver6Interior lighting7Horn8Towing hitch - left light
9
Operating lever beneath the steering wheel, engine control unit (on-
ly without KESSY), automatic gearbox (only without KESSY), auto-
matic gearbox (only without KESSY), ESC (only without KESSY), tow-
ing equipment (only without KESSY), power steering (only without
KESSY)10Power windows - rear left11Headlight cleaning system12Infotainment display13Multifunction unit for taxi vehicles14Operating lever under the steering wheel, light switch, ignition key
removal lock (automatic gearbox), headlight flasher, SmartGate, rain
sensor, rear view cameraNo.Power consumer15Air conditioning, automatic gearbox, diagnostic connector, heated windscreen16Instrument cluster, emergency call17Anti-theft alarm, horn18Rear seat heating19Not assigned20Not assigned21Not assigned22Front and rear window washer system (without KESSY or without
heated windscreen)23Heated front seats24Blower fan for air conditioning system, heating, air conditioning,
heating25Not assigned26Heated front seats27Rear window wiper28Not assigned29Airbag30Electric windows, reverse light switches, air conditioning system,
Park Assist, exterior mirror surface settings, power feed for centre
button strip, power feed for side button strip, interior mirror31Fuel pump, radiator fan, cruise control, front and rear window wash-
er, light switch32Diagnostic connector, beam range adjustment, control lever under
the steering wheel, interior lighting, voltage stabiliser for taxi vehi-
cles33Engine starting, clutch pedal switch34Heated windscreen washer jets35Not assigned36Not assigned37Radar38Not assigned39Electrical auxiliary heating system40Not assigned 152Do-it-yourself
Page 155 of 184

No.Power consumer41Rear window heater42Power windows - front passenger43Trailer device - electrical outlet44Cigarette lighter, 12-volt outlet in the interior, 12-volt power socket
in the luggage compartment45Power windows - rear right46Front and rear window washer, operating lever under the steering
wheel47Trailer device - electrical outlet48Towing hitch - right light49Fuel pump50Infotainment51Heating of the external mirror52KESSY53Steering lock (KESSY)54ABS or ESC55Not assigned56Not assigned57Not assigned58Rear seat heating59Not assigned
Fuses in the engine compartment
Fig. 181
Cover for the fuse box - variant 1
Fig. 182
Cover for the fuse box - variant 2
Read and observe
and on page 151 first.
Replacing fuses
›
Remove the ignition key, turn off the lights and all electrical consumers.
›
Press together the lock buttons of the cover simultaneously in the direction
of arrow
1
» Fig. 181 or » Fig. 182 and remove the cover in the direction of
arrow
2
.
›
Remove the plastic clip from the holder on the cover of the fuse box in the
dashboard.
›
Replace the defective fuse.
›
Replace the cover, push the lock buttons of the cover together and lock.
›
Replace the bracket at the original position.
CAUTION
The cover of the fuse box in the engine compartment must always be inserted
correctly, otherwise water may penetrate into the fuse box – there is a danger
of damage to the vehicle!153Fuses and light bulbs
Page 156 of 184

Fuse arrangement in the engine compartmentFig. 183
Fuses
Read and observe and on page 151 first.
No.Power consumer1Radiator fan2Glow plug system3ABS or ESC4Additional electrical heating, heated windscreen5Additional electrical heating, heated windscreen6Automatic gearbox7Engine control system8Windscreen wipers9Battery data module10ABS or ESC11Not assigned12Injectors, valve for fuel metering, control valve for fuel pressure13Brake pedal switch14Fuel pump, radiator fan, cooling pump, pump for intercooling15Engine control system, voltage stabiliser for taxi vehicles16Starter17Engine control system18Additional electric heater, valve for intake manifold, supercharger reg-
ulator, oil temperature, valve for activated charcoal filter, valve for oil
pressure controlNo.Power consumer19Lambda probe20Glow plug system, crankcase ventilation heater
Bulbs
Introduction
This chapter contains information on the following subjects:
Bulb arrangement in the front headlights
155
Replacing the bulb for the low beam (Halogen headlights)
155
Changing the bulb for main beam, separate daytime running lights, and
parking light
155
Changing the bulb for the front turn signal light
156
Replacing light bulbs for fog lights
157
Changing the bulb for the licence plate light
157
Removing/inserting the taillight
158
Replacing the bulbs in the taillight assembly
158
We recommend having bulbs replaced by a specialist garage or seeking other
expert help in the event of any uncertainties.
▶ Switch off the ignition and all of the lights before replacing a bulb.
▶ Faulty bulbs must only be replaced with the same type of bulbs. The designa-
tion is located on the light socket or the glass bulb.
We recommend having the headlight settings checked by a specialist garage after replacing a bulb in the low, high or fog beam.
In the case of failure of a Xenon gas discharge bulb or an LED diode, visit a
specialist garage.
WARNING■ Always read and observe the warning notes before completing any work
in the engine compartment » page 125.■
Accidents can be caused if the road in front of the vehicle is not suffi-
ciently illuminated and the vehicle cannot or can only be seen with difficul-
ty by other road users.
154Do-it-yourself
Page 157 of 184

WARNING (Continued)■H7 and H15 bulbs are pressurised and may burst when changing the bulb -
risk of injury! We therefore recommended wearing gloves and safety
glasses when changing a bulb.■
Do not carry out any work on the Xenon gas discharge lamps - risk of
death!
CAUTION
■ Do not take hold of the glass bulb with naked fingers (even the smallest
amount of dirt reduces the working life of the light bulb). Use a clean cloth,
napkin, or similar.■
The cap of the filament bulb must always be seated correctly in the head-
light, otherwise this may allow water and debris to enter the headlight - risk of
damage to the headlights.
Note
■ This Owner's Manual only describes the replacement of bulbs where it is pos-
sible to replace the bulbs on your own without any complications arising. Other
bulbs must be replaced by a specialist garage.■
We recommend that a box of replacement bulbs always be carried in the ve-
hicle.
Bulb arrangement in the front headlights
Fig. 184
Left headlight
Read and observe and on page 154 first.
Bulb arrangement » Fig. 184
Low beam or low beam with Xenon gas discharge bulb
Main beam, separate daytime running lights, and parking light
Turn signal light (at the front)
ABCReplacing the bulb for the low beam (Halogen headlights)Fig. 185
Changing the bulb for the low beam
Read and observe
and on page 154 first.
›
Remove the protective cap
A
» Fig. 184 on page 155 .
›
Remove the socket with the bulb by jiggling it out in the direction of arrow
1
» Fig. 185 .
›
Remove the connector.
›
Insert the connector with the new bulb in the direction of arrow
2
so that
the fixing lug
A
fits the bulb into the recess on the reflector.
›
Attach the connector.
›
Fit the protective cap
A
» Fig. 184 on page 155 .
Changing the bulb for main beam, separate daytime running
lights, and parking light
Fig. 186
Replacing the bulb for main
beam and separate daytime run-
ning lights
155Fuses and light bulbs
Page 158 of 184

Fig. 187
Change the light bulb for the parking light
Read and observe
and on page 154 first.
Removing/inserting the bulb for main beam and separate daytime running
lights
›
Remove the protective cap
B
» Fig. 184 on page 155 .
›
Pull the holder until it stops in the arrow direction
1
» Fig. 186 .
›
Remove the socket with the bulb in the direction of arrow
2
.
›
Change the bulb in the socket.
›
Insert the socket with the new bulb into the headlight in the opposite direc-
tion to the arrow
2
.
›
Turn the socket with the new bulb in the opposite direction to the arrow
1
until it stops.
›
Fit protective cap
B
» Fig. 184 on page 155 Insert.
Removing/inserting the bulb for the parking light
›
Remove the protective cap
B
» Fig. 184 on page 155 .
›
Remove the bulb holder with the bulb by jiggling it out in the direction of the
arrow
1
» Fig. 187 .
›
Hold the pedestal with the bulb in the region
A
.
›
Remove the faulty bulb from the holder in the direction of the arrow
2
.
›
Insert a new bulb in the bulb holder up to the stop.
›
Replace the bulb holder in the headlamp with the bulb.
›
Fit protective cap
B
» Fig. 184 on page 155 Insert.
Changing the bulb for the front turn signal lightFig. 188
Changing the bulb for the front
turn signal light
Read and observe and on page 154 first.
›
Turn the socket with the bulb in the direction of arrow
1
» Fig. 188 .
›
Remove the socket with the bulb in the direction of arrow
2
.
›
Change the bulb in the socket.
›
Insert the socket with the new bulb into the headlight in the opposite direc-
tion to the arrow
2
.
›
Turn the socket with the new bulb in the opposite direction to the arrow
1
until it stops.
156Do-it-yourself
Page 159 of 184

Replacing light bulbs for fog lightsFig. 189
Removing / replacing the fog light bulb
Read and observe
and on page 154 first.
Removing the protective grille and headlight
›
Insert the clamps for removing the full wheel trims into opening
A
» Fig. 189 .
›
Pull on the hook in the direction of arrow
1
to remove the protective grille
in the direction of arrow
2
» Fig. 189 .
›
Unscrew the screws
B
with the screwdriver from the tool kit.
›
With the key
2
» page 139 , Vehicle tool kit , unlock the locking
C
in direction
of arrow
3
.
›
Remove the headlight in the direction of arrow
4
.
Replacing the light bulb
›
Press the latch on the connector in the direction of arrow
5
» Fig. 189 .
›
Remove the key in the direction of the arrow
6
.
›
Turn the socket with the bulb to the stop in the direction of the arrow
7
.
›
Remove the socket with the bulb in the direction of arrow
8
.
›
Insert the new bulb into the headlight and turn counter to the direction of
arrow
7
as far as the stop.
›
Attach the connector.
Insert the headlight and grille›Replace the fog light by inserting it in the opposite direction of the arrow 4
» Fig. 189 and tightening.
›
Insert the guard and push it gently until it locks into place.
Changing the bulb for the licence plate light
Fig. 190
Removing the licence plate light / replacing the bulb
Read and observe
and on page 154 first.
›
Push the light in the direction of arrow
1
» Fig. 190 until it is released.
›
Swivel out the lamp in the direction of the arrow
2
and remove it.
›
Remove the faulty bulb from the holder in the direction of the arrow
3
.
›
Insert a new bulb into the holder.
›
Reinsert the lamp in the opposite direction to the arrow
1
.
›
Push on the light until the spring clicks into place.
Note
On vehicles with license plate light, a specialist should be consulted in the
event of an LED failure.157Fuses and light bulbs
Page 160 of 184

Removing/inserting the taillightFig. 191
Remove light / pull out connector
Read and observe
and on page 154 first.
Removing
›
Open the boot lid.
›
Insert the clamps for removing the full wheel trims into opening
A
» Fig. 191 .
›
Remove the cover by pulling the hook in the direction of arrow
1
.
›
Unscrew the screws
B
with the key from the tool kit.
›
Grasp the lamp and carefully remove in the direction of arrow
2
.
›
Press the latch on the connector in the direction of arrow
3
.
›
Carefully remove the connector from the tail lamp assembly in the direction
of the arrow
4
.
Fitting
›
Insert the connector into the light and lock it securely.
›
Insert the lamp with the pin
B
» Fig. 192 on page 158 into the recesses
C
» Fig. 191 in the body.
›
Carefully push the cover in » .
›
Screw the lamp into place and install the cover. The cover must engage se-
curely.
› Close the boot lid.
CAUTION
■
When installing the light, ensure that the cable bundle does not become
pinched between the body and the lamp – risk of damage to the electrical in-
stallation and risk of water ingress.■
If you are not sure whether the cable bundle has become pinched, we recom-
mend that you have the light connection checked by a specialist garage.
■
Ensure that the vehicle paintwork and the tail lamp are not damaged when
removing and installing the tail lamp.
Replacing the bulbs in the taillight assembly
Fig. 192
Outer part of the lamp/inner part of the lamp
Read and observe
and on page 154 first.
Outer part of the lamp
›
Turn the holder with the bulb
A
» Fig. 192 in the direction of the arrow
1
.
›
Remove the holders with the bulbs from the light housing in the direction of
the arrow
2
.
›
Reinsert the holder with the bulb into the light housing and turn in the oppo-
site direction of the arrow
1
to the stop.
Inner parts of the lamp
›
Unlock the bulb holder using the marked area with arrows » Fig. 192 and re-
move the bulb holder from the light.
›
Turn the respective light bulb counter-clockwise to the stop and remove it
from the bulb holder.
›
Insert a new bulb into the holder and turn in a clockwise direction to the
stop.
›
Insert the bulb holder in the tail lamp assembly.
158Do-it-yourself