Page 13 of 299

In brief11
1Power windows .....................31
2 Exterior mirrors .....................29
3 Cruise control .....................174
Speed limiter ....................... 176
Adaptive cruise control .......177
Forward collision alert .........184
4 Side air vents ...................... 151
5 Turn and lane-change
signals, headlight flash,
low beam and high beam,
high beam assist ................140
Exit lighting ......................... 143
Parking lights ...................... 141
Buttons for Driver
Information Centre ..............115
6 Instruments ........................ 102
7 Steering wheel controls .......94
8 Driver Information Centre .... 115
9 Windscreen wiper,
windscreen washer
system, headlight washer
system, rear wiper, rear
washer system ......................9610Central locking system ..........22
Hazard warning flashers ....140
Sport mode ........................ 172
Tour mode .......................... 172
Fuel selector ....................... 103
Control indicator for airbag
deactivation ........................ 109
Control indicator for front
passenger seat belt ...........108
11 Info-Display ........................ 119
12 Centre air vents .................. 151
13 Anti-theft alarm system
status LED ........................... 26
14 Glovebox .............................. 63
15 Climate control system ........ 145
16 AUX input, USB input, SD
card slot ................................ 10
Power outlet ........................ 100
17 Selector lever, manual
transmission ....................... 167
Automatic transmission ......16418Traction Control system .....171
Electronic Stability Control . 172
Lane departure warning .....202
19 Electric parking brake .........169
20 Parking assist systems .......190
Eco button for stop-start
system ................................. 157
21 Ignition switch with
steering wheel lock ............155
22 Horn ..................................... 95
Driver airbag ........................ 54
23 Bonnet release lever ..........220
24 Fuse box ............................ 239
Storage compartment ...........65
25 Steering wheel adjustment ..94
26 Light switch ........................ 133
Headlight range
adjustment ......................... 135
Front fog lights ...................140
Rear fog light ...................... 141
Instrument illumination .......142
Page 226 of 299

224Vehicle 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 3 266.
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
3 144.
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 237 of 299
Vehicle care235
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 238 of 299
236Vehicle 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 239 of 299
Vehicle care237Engine 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 system5–6Mirror heating, anti-theft alarm
system7Fan control, engine control
module, transmission control
module8Lambda sensor, engine cooling9Rear window sensor10Battery sensor11Trunk release12Adaptive forward lighting, auto‐
matic light control13ABS14Rear window wiper
Page 240 of 299

238Vehicle 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 recirculation35Outside rear view 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, malfunction may occur.
Page 241 of 299
Vehicle care239Instrument 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, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Left low beam, body control
module9Right low beam, body control
module, airbag module10Door locks, body control module11Interior fan12–
Page 242 of 299
240Vehicle care
No.Circuit13–14Diagnostic 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.