Page 13 of 299

In brief11
1Power windows .....................30
2 Exterior mirrors .....................28
3 Cruise control .....................176
Speed limiter ....................... 178
Adaptive cruise control .......179
Forward collision alert .........186
4 Side air vents ...................... 153
5 Windscreen wiper,
windscreen washer
system, headlight washer
system, rear wiper, rear
washer system ......................98
6 Instruments ........................ 104
7 Steering wheel controls .......96
8 Driver Information Centre .... 117
9 Turn and lane-change
signals, headlight flash,
low beam and high beam,
high beam assist .................142
Exit lighting ......................... 145
Parking lights ...................... 143
Buttons for Driver
Information Centre ..............11710Central locking system ..........21
Hazard warning flashers ....142
Sport mode ........................ 174
Tour mode .......................... 174
Fuel selector ....................... 105
Control indicator for airbag deactivation ........................ 111
Control indicator for front
passenger seat belt ...........110
11 Info-Display ........................ 121
12 Centre air vents .................. 153
13 Anti-theft alarm system
status LED ........................... 25
14 Glovebox .............................. 65
Fuse box ............................. 241
15 Climate control system ........ 147
16 AUX input, USB input, SD
card slot ................................ 10
Power outlet ........................ 10217Selector lever, manual
transmission ....................... 169
Automatic transmission ......166
18 Traction Control system .....173
Electronic Stability Control . 174
Lane departure warning .....205
19 Electric parking brake .........171
20 Parking assist systems .......192
Stop-start button .................159
21 Ignition switch with
steering wheel lock ............157
22 Horn ..................................... 97
Driver airbag ........................ 57
23 Bonnet release lever ..........222
24 Storage compartment ..........67
25 Steering wheel adjustment ..96
26 Light switch ........................ 135
Headlight range
adjustment ......................... 137
Front fog lights ...................142
Page 228 of 299

226Vehicle care
The brake fluid level must be betweenthe MIN and MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 268.
Vehicle battery Vehicles without stop-start system
will be equipped with a lead acid
battery. Vehicles with stop-start
system will be equipped with an
AGM battery which is not a lead acid
battery.
The vehicle battery is maintenance-
free, provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
4 weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
The anti-theft alarm siren must be
deactivated as follows: Switch the ignition on then off, disconnect the
vehicle's battery within 15 seconds.
Vehicle battery discharge protection
3 146.
Replacing the vehicle battery Notice
Any deviation from the instructions
given in this section may lead to
temporary deactivation of the stop-
start system.
When the vehicle battery is being
replaced, please ensure that there
are no open ventilation holes in the
vicinity of the positive terminal. If a
ventilation hole is open in this area, it
must be closed off with a dummy cap, and the ventilation in the vicinity of the
negative terminal must be opened.
Only use vehicle batteries that allow
the fuse box to be mounted above the
vehicle battery.
In vehicles with stop-start system, be
sure to have the AGM (Absorptive
Glass Mat) battery replaced with an
AGM battery again.
Page 239 of 299
Vehicle care237
2. Remove the bulb from the socketby pulling.
3. Replace the bulb and insert it into
the socket.
4. Push the cover into the housing.
Interior lights
Courtesy lights, reading lights
Have bulbs replaced by a workshop.
Load compartment light
Have bulbs replaced by a workshop.
Instrument panel
illumination
Have bulbs replaced by a workshop.Electrical system
Fuses
Data on the replacement fuse must
match the data on the defective fuse.
There are three fuse boxes in the
vehicle:
■ in the front left of the engine compartment
■ in left-hand drive vehicles, in the interior behind the storage
compartment, or, in right-hand
drive vehicles, behind the glovebox
■ behind a cover on the left side of the
load compartment
Before replacing a fuse, turn off the
respective switch and the ignition.
Page 240 of 299
238Vehicle care
There are different kinds of fuses in
the vehicle.
Depending on the type of fuse, a
blown fuse can be recognized by its
melted wire. Do not replace the fuse until the cause of the fault has been
remedied.
Some functions are protected by
several fuses.
Fuses may also be inserted without existence of a function.
Fuse extractor A fuse extractor may be located in the fuse box in the engine compartment.
Place the fuse extractor on the
various types of fuse from the top or
side, and withdraw fuse.
Page 241 of 299
Vehicle care239Engine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover and fold it
upwards until it stops. Remove the
cover vertically upwards.
No.Circuit1Engine control module2Lambda sensor3Fuel injection/Ignition system4Fuel injection/Ignition system5–6Exterior mirror heating/Anti-
theft alarm system7Fan control/Engine control
module/Transmission control
module8Lambda sensor/Engine cooling9Rear window sensor10Battery sensor11Tailgate release12Adaptive forward lighting/Auto‐
matic light control13ABS14Rear window wiper
Page 242 of 299

240Vehicle care
No.Circuit15Engine control module16Starter17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Stop-start system29Electric parking brake30ABS31Adaptive cruise controlNo.Circuit32Airbag33Adaptive forward lighting/Auto‐
matic light control34Exhaust gas recirculation35Exterior mirror/Rain sensor36Climate control37Canister vent solenoid38Vacuum pump39Central control module40Windscreen washer/Rear
window washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44Windscreen wiper45Radiator fan46–No.Circuit47Horn48Radiator fan49Fuel pump50Headlamp levelling/Adaptive
forward lighting51Air shutter52Auxiliary heater/Diesel engine53Transmission control module/
Engine control module54Vacuum pump/Instrument
panel cluster/Heating ventila‐
tion/Air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Page 243 of 299
Vehicle care241Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox, then
open the cover and fold it down.
No.Circuit1Cruise control/Speed limiter/
Adaptive cruise control/Steering wheel controls2Exterior lights/Body control
module3Exterior lights/Body control
module4Infotainment system5Infotainment system/Instrument6Power outlet/Cigarette lighter7Power outlet8Left low beam/Body control
module9Right low beam/Body control
module/Airbag module10Door locks/Body control module11Interior fan12–13–
Page 244 of 299
242Vehicle care
No.Circuit14Diagnostic connector15Airbag16Power outlet17Air conditioning system18Logistics19Body control module20Body control module21Instrument panel cluster/Anti-
theft alarm system22Ignition sensor23Body control module24Body control module25–26–
Load compartment fuse
box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
If equipped with tyre repair kit,
remove the complete box.
Fuse assignments