Page 196 of 273
194Driving and operatingChecking 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.
● Remove the cover from the lock of the rotary knob and verify
whether the rotary knob is
locked. If the rotary knob cannot be turned, it is locked.
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 197 of 273

Driving and operating195Insert 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.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle / trailer combination is
Page 211 of 273
Vehicle care209
2. Slacken the lamp fixing nut usinga box spanner or socket.
To avoid losing the nut if it drops
into the wing trim, first place a
cloth below it.
3. Manually unscrew and remove the lamp fixing nut.
4. Disengage the retaining clip, while pushing the lamp out
slightly.5. From the outside, carefully withdraw the light assembly from
recess and remove. Take care
that the cable duct remains in
position.
6. Turn the bulb socket anticlockwise and remove it from
the light assembly.7. Detach the bulb from the bulb socket and replace the bulb.
Brake light( 1)
Page 212 of 273
210Vehicle care
Turn light (2)
8. Insert the bulb socket into the light
assembly. Fit the light assembly in the recess and tighten the lamp
fixing nut from the inside. Attach
the cover.
Light assembly in the tailgate
1. Open the tailgate and remove the
cover.
2. Slacken the lamp fixing nut using a box spanner or socket.
3. Manually unscrew and remove the lamp fixing nut.
4. Disengage the retaining clip, while pushing the light assembly
out slightly.
5. From the outside, carefully withdraw light assembly from
recess and remove. Take care
that the cable duct remains in
position.
6. Turn the bulb socket anticlockwise and remove it from
the light assembly.
Page 214 of 273

212Vehicle care
2. Turn bulb socket clockwise andremove from housing.
3. Detach the bulb from the bulbsocket and replace the bulb.
4. Insert bulb socket and turnanticlockwise.
5. Insert left end of the lamp, slide to
the left and insert right end.
Number plate light Number plate lights are designed as
LEDs and can not be changed.
Have lights repaired by a workshop in
case of failure.
Interior lightsHave the following bulbs replaced by
a workshop:
● courtesy light, reading lights
● load compartment light
● instrument panel illuminationElectrical system
Fuses Data on the replacement fuse must
match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
● engine compartment
● instrument panel
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised by its melted wire.Caution
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.
Page 269 of 273

267Clock............................................. 84
Collision damage repair ..............258
Control indicators.......................... 92
Control of the vehicle .................131
Controls ........................................ 80
Convex shape .............................. 37
Coolant and antifreeze ...............242
Cruise control ...................... 98, 153
Cupholders .................................. 69
Curtain airbag system .................. 60
Curve lighting.............................. 111
D
Danger, Warnings and Cautions ...4
Daytime running lights ...............111
Declaration of conformity ............255
DEF ............................................ 139
Deflation detection system ...........97
Diesel exhaust fluid ....................139
Diesel fuel system bleeding .......205
Door open .................................... 99
Doors ............................................ 30
Driver alert .................................. 187
Driver assistance systems ..........153
Driver Information Centre .............99
Driving characteristics and towing tips .............................. 192
Driving hints ................................ 131E
Electric adjustment ......................37
Electrical system......................... 212
Electric parking brake ...94, 146, 147
Electric parking brake fault ...........95
Electronic climate control system 123
Electronic driving programmes ..144
Electronic key system ...................23
Electronic Stability Control and Traction Control system ....96, 150
Emergency call ........................... 107
End-of-life vehicle recovery .......199
Engine compartment fuse box ...213
Engine coolant ........................... 202
Engine coolant temperature ........96
Engine coolant temperature gauge ....................................... 90
Engine data ............................... 248
Engine exhaust .......................... 138
Engine identification ...................245
Engine oil ................... 201, 242, 246
Engine oil level monitor ................91
Engine oil pressure ......................97
Entry lighting .............................. 118
Event data recorders ..................261
Exhaust filter ......................... 96, 138
Exit lighting ................................ 118
Exterior care .............................. 233
Exterior light ................................. 97Exterior lighting ....................13, 109
Exterior mirrors ............................. 37
F
Fault ........................................... 145
First aid ......................................... 76
First aid kit ................................... 76
Fixed air vents ........................... 128
Floor mats................................... 236
Folding mirrors ............................. 38
Forward collision alert................. 164
Front airbag system .....................59
Front fog lights .............98, 115, 208
Front pedestrian protection ........169
Front seats.................................... 46
Fuel............................................. 188
Fuel for diesel engines ..............189
Fuel for petrol engines ...............188
Fuel gauge ................................... 90
Fuses ......................................... 212
G
Gauges ......................................... 89
Gear selection ........................... 143
Gear shifting ................................. 95
General information ...................192
Glass panel .................................. 43
Glovebox ..................................... 69
Glovebox cooler ......................... 128