Page 180 of 253
178Driving and operatingFitting the coupling ball bar
Disengage and fold down the socket.Remove the sealing plug from the
opening for the coupling ball bar and
stow it.
Checking the tensioning of the
coupling ball bar
● Red marking on rotary knob must
point towards green marking on
coupling ball bar.
● The gap between the rotary knob
and the coupling ball bar must be approx. 6 mm.
● The key must be in position c.
Otherwise, the coupling ball bar must be tensioned before being inserted:
● Unlock coupling ball bar by turning key to position c.
● Pull out rotary knob and turn
clockwise as far as it will go.
Inserting the coupling ball bar
Page 181 of 253

Driving and operating179Insert the tensioned coupling ball bar
in the opening and push firmly
upwards until it audibly engages.
The rotary handle snaps back into its
original position resting against the
coupling ball bar without a gap.9 Warning
Do not touch rotary handle during
insertion.
Lock the coupling ball bar by turning
the key to position e. Remove the key
and close the protective flap.
Eye for break-away stopping cable
Attach breakaway stopping cable to
eye.
Check that the coupling ball bar is correctly installed
● Green marking on rotary knob must point towards green
marking on coupling ball bar.
● There must be no gap between the rotary handle and the
coupling ball bar.
● The coupling ball bar must be firmly engaged in the opening.
● The coupling ball bar must be locked and the key removed.9Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted correctly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.
Dismounting the coupling ball bar
Open the protective flap and turn the
key to position c to unlock the
coupling ball bar.
Pull out rotary handle and turn
clockwise as far as it will go. Pull out coupling ball bar downwards.
Insert sealing plug in opening. Fold away socket.
Page 191 of 253
Vehicle care189Halogen bulbs9Warning
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions onthe bulb package.
LED lighting
This vehicle has several LED lights.
For replacement of any LED lighting
assembly, contact a workshop.
Halogen headlights
Baselevel headlight assembly
The base model vehicle has halogen
high beam and low beam headlights,
LED turn lights, a sidelight and
daytime running lights on the
headlight assembly.
Passenger side shown, driver side
similar.
On the driver side remove the
windscreen washer bottle filler neck,
before changing a bulb.
1. High beam headlights
2. Low beam headlights
High beam and low beam headlights 1. Open the bonnet.
Bonnet 3 182.2. Remove the protective cover.
3. Turn the bulb anticlockwise and pull straight back.
4. Disconnect the wiring harnessconnector from the bulb.
Page 192 of 253

190Vehicle care5. Install the new bulb in theheadlight assembly by turning
clockwise.
6. Reconnect the wiring harness connector.
7. Install the protective cover.
For the driver side, reinstall the
windscreen washer bottle filler neck
by firmly pushing it straight into the
bottle. Ensure that the filler neck clip
engages into the underhood electrical centre retainer.
Uplevel headlight assembly
The uplevel model vehicle has LED high beam and low beam headlights,turn lights, a sidelight and daytime
running lights on the headlight
assembly.Front fog lights
The bulbs are accessible from the
underside of the vehicle
1. Turn the respective wheel inside to get better access and remove
three torx screws on outside of
wheel house.
Vehicle tools 3 199.
2. Pull and hold lining to get access to the bulb holder.
3.Pull the retaining rib outwards and
remove plug connector from the
bulb socket.
4. Turn the bulb holder anticlockwise
and remove it from the reflector.
5. Remove and replace the bulb socket with bulb and attach the
plug connector.
6. Insert the bulb socket into the reflector by turning clockwise and
engage.
7. Re-assemble the lining and fasten
the three torx screws.
Page 194 of 253
192Vehicle care
3. Tail / stop light, if not equippedwith LEDs (1)
Turn light (2)
Back-up light (3)
4. Remove bulb holder. Remove and renew bulb.
5. Insert bulb holder into the tail light
assembly. Install tail light
assembly in body and tighten.
Close covers and engage.
6. Switch on ignition, operate and check all lights.
Number plate light
1. Prise the light out with a screwdriver.
2. Remove bulb housing downwards, taking care not to pull
on the cable.
Rotate bulb holder anticlockwise
to disengage.
3. Remove bulb from holder and renew bulb.
4. Insert bulb holder in bulb housing and rotate clockwise.
5. Insert bulb housing and secure using a screwdriver.
Rear fog light
The bulbs are accessible from the
underside of the vehicle.
Page 195 of 253
Vehicle care193
1.Turn the bulb holder anticlockwise
and remove it from reflector.
2. Disengage the bulb socket from the plug connector by pressing
the retaining lug.
3. Remove and replace the bulb socket with bulb and attach the
plug connector.
4. Insert the bulb socket into the reflector and turn clockwise to
engage.Electrical system
Fuses
Data on the replacement fuse must
match the data on the defective fuse.
In a box above the positive terminal of
the battery are some main fuses. If
necessary have them changed by a workshop.
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised 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.
Note
Not all fuse box descriptions in this
manual may apply to your vehicle.
When inspecting the fuse box, refer
to the fuse box label.
Page 248 of 253

246IndexAAccessories and vehicle modifications .......................... 180
Adaptive forward lighting .....96, 120
AdBlue .................................. 95, 144
Adjustable air vents ...................131
Airbag and belt tensioners ...........92
Airbag deactivation ................52, 93
Airbag label................................... 47 Airbag system .............................. 47
Air conditioning regular operation ................................ 132
Air conditioning system .............. 128
Air intake .................................... 132
Air vents...................................... 131
All-wheel drive ........................... 150
Antilock brake system ................ 151
Antilock brake system (ABS) .......94
Anti-theft alarm system ................31
Anti-theft locking system .............. 31
Appearance care ........................218
Automatic anti-dazzle ..................35
Automatic light control ...............117
Automatic locking ........................29
Automatic transmission .............146
Autostop ..................................... 139
Auxiliary heater ........................... 131B
Battery discharge protection ......126
Battery voltage ........................... 105
Bicycle rack .................................. 61
BlueInjection ............................... 144
Bonnet ....................................... 182
Brake and clutch fluid .................222
Brake and clutch system .............93
Brake assist ............................... 152
Brake fluid .................................. 185
Brakes ............................... 151, 185
Breakdown.................................. 216
Bulb replacement ....................... 188
C Capacities .................................. 234
Catalytic converter .....................143
Central locking system ................25
Centre console storage ...............61
Changing tyre and wheel size ...206
Charging system .......................... 93
Child locks ................................... 30
Child restraint installation locations ................................... 56
Child restraints.............................. 53
Child restraint systems ................53
Climate control ............................. 16
Climate control systems .............127
Clock............................................. 81
Code ........................................... 104