Page 13 of 321

In brief11
1Power windows .....................39
2 Central locking system ..........22
3 Exterior mirrors .....................36
4 Light switch ........................ 125
Headlight range
adjustment ......................... 127
Front/rear fog lights ............131
Instrument illumination .......133
5 Side air vents ...................... 148
6 Turn and lane-change
signals, headlight flash,
low/high beam, high beam
assist ................................... 131
Exit lighting ......................... 135
Parking lights ...................... 132
Buttons for Driver
Information Centre ..............110
7 Cruise control .....................173
Speed limiter ....................... 174
Adaptive cruise control .......175
Forward collision alert .........1838Instruments .......................... 99
Driver Information Centre .... 110
9 Buttons for Driver
Information Centre ..............110
10 Windscreen wiper and
washer, headlight washer,
rear wiper and washer .........87
11 Centre air vents .................. 148
12 Sport/Tour mode ................170
Traction Control system .....168
Electronic Stability Control . 169
Hazard warning flashers ....131
Parking assist/Advanced
parking aid ......................... 189
Lane departure warning .....203
13 Anti-theft alarm system
status LED ........................... 33
14 Colour-Info-Display ............117
15 Glovebox .............................. 69
Fuse box ............................ 23816Control indicator for airbag
activation/deactivation .......104
Control indicator for front
passenger seat belt ...........103
17 Controls for Colour-Info-
Display operation ................117
18 CD-slot
19 Climate control system ........ 137
20 Electric parking brake .........166
21 Touchpad ............................ 117
22 Manual transmission ..........164
Automatic transmission ......160
23 Storage ................................. 69
24 Eco button for stop-start
system ................................. 156
Fuel selector button ............101
25 Ignition/Power switch ..........152
26 Horn ..................................... 86
27 Steering wheel adjustment ..85
28 Bonnet release lever ..........217
29 Storage compartment ...........70
Page 224 of 321

222Vehicle care
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 vehicle 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.
Battery discharge protection 3 135.
Replacing the vehicle battery Notice
Any deviation from the instructions
given in this paragraph may lead to
a temporary deactivation of the stop-
start system.
The vehicle battery is covered.
Remove the cover to replace the battery. Lift up the cover at the rear
and unlatch it at the front.
When the 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
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 321
Vehicle care235Electrical systemFuses
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.
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.
Page 238 of 321
236Vehicle care
Place the fuse extractor on the
various types of fuse from the top or
side, and withdraw fuse.
Engine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover, lift it upwards
and remove.
Page 240 of 321
238Vehicle care
No.Circuit46Terminal 87, main relay47Lambda probe48Fog lights49Right low beam50Left low beam51Horn52Ignition53Ignition, ventilated front seats54Ignition55Power windows, mirror folding56Windscreen washer57–58–59Diesel fuel heating, emission
control system60Mirror heating61Mirror heatingNo.Circuit62–63Rear window sensor64Adaptive forward lighting65Auxiliary pump (only on vehicles
with stop-start system)66Rear window washer system67Fuel system control module68–69Vehicle battery sensor70Rain sensor71Vehicle battery sensor
After changing of defective fuses
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open compartment, compress the
locking tabs, fold compartment down and remove.
Page 241 of 321
Vehicle care239
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover.
No.Circuit1Infotainment system, Info
display2Body control unit3Body control unit4Infotainment system, Info
display5Infotainment system, Info
display6Cigarette lighter7Power outlet8Body control unit9Body control unit10Body control unit11Interior fan12–13–14Diagnostic connector15AirbagNo.Circuit16Central locking system, tailgate17Air conditioning system18Transportation fuse19Memory20–21Instrument22Ignition23Body control unit24Body control unit25–26Power outlet load compartment
Power seats, No's. 12 and 13, have
an overload protection. The circuit will
be closed again after cooling down.
Page 242 of 321
240Vehicle careLoad compartment fuse
box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
No.Circuit1Central locking system, Power
tailgate2Trailer module3–4–5Trailer socket6Steering wheel heating7–8Trailer socket9Sunroof10Central locking system, tailgate11–12–13–14–15Power tailgate lock16Air conditioning system
Page 243 of 321
Vehicle care241
No.Circuit17–18–19Side obstacle detector20Side obstacle detector, venti‐
lated front seats21Active damping system, High
beam assist, Cruise control,
Traffic sign assistant, Lane
departure warning, trailer
module22Anti-theft alarm system23All-wheel drive, anti-theft alarm
system24–25–26–27–28–No.Circuit29Trailer module, transportation
fuse30Side obstacle detector31–32–33–34Sunroof35–36–37–Vehicle tools
Tools
Vehicles with tyre repair kit
The tools and the towing eye are
located together with the tyre repair
kit in a tool box below the floor cover
in the load compartment.