Page 13 of 301

In brief11
1Power windows .....................31
2 Exterior mirrors .....................29
3 Cruise control .....................177
Speed limiter ....................... 179
Adaptive cruise control .......180
Forward collision alert .........187
4 Side air vents ...................... 154
5 Turn and lane-change
signals, headlight flash,
low beam and high beam,
high beam assist ................143
Exit lighting ......................... 146
Parking lights ...................... 144
Buttons for Driver
Information Centre ..............118
6 Instruments ........................ 105
7 Steering wheel controls .......97
8 Driver Information Centre .... 118
9 Windscreen wiper,
windscreen washer
system, headlight washer
system, rear wiper, rear
washer system ......................9910Central locking system ..........22
Hazard warning flashers ....143
Sport mode ........................ 175
Tour mode .......................... 175
Fuel selector ....................... 106
Control indicator for airbag
deactivation ........................ 112
Control indicator for front
passenger seat belt ...........111
11 Info-Display ........................ 122
12 Centre air vents .................. 154
13 Anti-theft alarm system
status LED ........................... 26
14 Glovebox .............................. 66
15 Climate control system ........ 148
16 AUX input, USB input, SD
card slot ................................ 10
Power outlet ........................ 103
17 Selector lever, manual
transmission ....................... 170
Automatic transmission ......16718Traction Control system .....174
Electronic Stability Control . 175
Lane departure warning .....206
19 Electric parking brake .........172
20 Parking assist systems .......193
Eco button for stop-start
system ................................. 160
21 Ignition switch with
steering wheel lock ............158
22 Horn ..................................... 98
Driver airbag ........................ 58
23 Bonnet release lever ..........223
24 Fuse box ............................ 242
Storage compartment ...........68
25 Steering wheel adjustment ..97
26 Light switch ........................ 136
Headlight range
adjustment ......................... 138
Front fog lights ...................143
Rear fog light ...................... 144
Instrument illumination .......145
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Vehicle care227
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 3 269.
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.
Vehicle battery discharge protection
3 147.
Replacing the vehicle battery
Note
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 240 of 301
238Vehicle care
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 241 of 301
Vehicle care239
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 242 of 301
240Vehicle careEngine 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
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Vehicle care241
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 244 of 301
242Vehicle careInstrument 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 245 of 301
Vehicle care243
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