Page 76 of 417
Changing the button cell
Fig. 55
Vehicle key: opening battery compart-
ment cover. .
Page 85 of 417
cess if the 12-volt vehicle battery or button
cell in the v
ehicle key is weak or discharged.
The vehicle can be locked or unlocked man-
ually
Page 399 of 417

Battery charge limits
277
Belt retractor 44
Belt status display see Seat belts 37
Belt tension limiter 44
Belt tensioner 44
Disposal 45
Service and disposal 45
Bench seat 97
Bicycle carrier Fitting on the ball coupling 267
Black ice warning 23
Bluetooth 216
Profile 216
Bonnet Closing 312
Display 313
Opening 312
Warning lamp 313
Bonnet space Preparations 311
Safety notes 309
Boot see Luggage compartment 254
Boot lid 84
Closing 88
Closing automatically 88
Driving with an open boot lid 133
Electrically closing 86
Electrically opening 86
Opening 87
Opening automatically 87
Brake Assist system 190
Brake blending 191
Brake energy recuperation (energy recov-
ery) 134
ECO assistance 136
Brake fluid 318
Specification 319
Brake servo 189, 190
Brake support systems 189
ABS 189
BAS 189
EDL 189
ESC 189
TCS 189
XDS 189
Brake system Malfunction 134
Brakes 189
Brake fluid 318Brake fluid level
319
Brake pads 131, 134
Brake support systems 189
Changing the brake fluid 319
Electromechanical brake servo 190
Electronic parking brake 177
Emergency braking function 178
Parking brake 177
Running in brake pads 131
Braking intervention Automatic 182
Damage minimisation 182
Break recommendation Switching on and off 25
Breakdown Making your vehicle safe 66
Breakdown set 348
Check after driving for 10 mi- nutes 351
Contents 349
Inflating the tyre 350
Preparations 350
Sealing the tyre 350
When not to use 348
Buckle-up request see Seat belts 37
Bulb failure see Changing bulbs 295
Button cell Replacing in the vehicle key 74
C
Camera 159
Cameras Add-on parts 363
Damage 363
Repairs 363
Car wash Parking brake 177
Vehicle care 355
Car2X communication 198
Switching on and off 199
System limits 199
Troubleshooting 200
Care see Vehicle care 355
CCS see Cruise control system 145
Central airbag see Airbag system 56
Central locking
Index 39711A012720AB
Page 404 of 417

Fastening rings
259
Fault memory see Event memory 367
Filling Safety notes 309
Fire What to do 67
Fire extinguisher 69
First-aid box see First-aid kit 68
First-aid kit 68
Storage location 68
First-aid pack see First-aid kit 68
Floor mats 129
Frequency bands 232
Front airbags see Airbag system 52
Front Assist 159
Advance warning 161
Camera 159
Cyclist monitoring 163
Distance warning 161
Oncoming vehicle braking when turn- ing 164
Operating 164
Pedestrian Monitoring 163
Problem solving 165
Radar sensor 159
Swerve support 163
Switching off 164
System boundaries 162
Urgent warning 161
Front compartment 309
Vehicle battery (12-volt) 320
Front passenger exterior mirror lowering
function 117
Front passenger front airbag see Airbag system 47
Switching off with key-operated switch 53
Front seats 93
Electrical controls 95
Electrically adjusting 95
Mechanical controls 94
Mechanically adjusting 94
Function buttons Area View 182
Manoeuvre braking 181
Park Distance Control 181
Parking systems 181Rear view camera system
181
Fuses 296
Changing 300
Colour coding of fuses 301
Detecting a blown fuse 301
In the bonnet space 298
In the dash panel 299
Preparation for changing 301
Types 300
G
General notes 32
Glass roof Sun blind in the glass roof 119
Gradient angle 387
Gross combination weight Information 387
H Handbrake see Parking brake 177
Hazard warning lights 66
Head restraint 99
Head restraints 98
Removing and installing 99
Head-up display 21
Adjusting 22
Adjusting the height 22
Display areas 21
Switching off 22
Switching on 22
Headlight range control 109
Headlights Driving abroad 110
Heated seats see Air conditioning system 124
Help apps 203
Help for mobile online services 203
High-visibility waistcoat 68, 69
High-voltage battery 273
AC charging 281
Battery capacity 275, 391, 392
Battery care 276
Battery charge limits 277
Care instructions 275, 276
Charge level 19
Charging 279
Charging power 391, 392
Charging process display 284
Charging settings 276
402 Index
Page 414 of 417

Indicator lamp
82
Indicator lamp in the vehicle key 75
Keyless Access 76, 82, 140
Lane change system 174
Lane keeping system (Lane As- sist) 167
Lights 110
Low charge level 285
Noises of the electronic parking brake 178
One-touch opening and closing 91
Parking system cameras 183
Parking system sensors 183
Parking systems 183
Predictive cruise control 159
Proactive occupant protection sys- tem 47
Rain and light sensor 111, 115
Reduced power 137
Roll-back function 91
Sensors 77
Speed limiter 148
Speed limiter with predictive con- trol 150
Starter button 139, 140
Steering 143
Steering column 143
Towing bracket 273
Trailer turn signals 111
Travel Assist 170
Turn signals 77, 82, 89, 110
Tyre monitoring system 327
Tyre Pressure Loss Indicator 327
Unit of temperature 126
Vehicle battery (12-volt) is not charg- ed 323
Vehicle battery (12-volt) warning lamp 323
Vehicle battery (12-Volt): 12-volt battery diagnosis 324
Vehicle battery (12-Volt): battery diag- nosis 324
Vehicle battery (12-Volt): checking the 12- volt battery 324
Vehicle battery (12-volt): low charge lev- el 324
Vehicle battery (12-Volt): replacing the 12-
volt battery 324
Vehicle battery (12-volt): vehicle will not restart 323
Vehicle key not recognised 140
Vehicle lighting 111Vehicle operation not possible 136
Vision
114
Voice control 230
Washer fluid level 114
Water under the vehicle 127
Window condensation 126
Wipers 114
Type plate 389
Tyre damage 334
Tyre load 338
Tyre Mobility System see Breakdown set 348
Tyre monitoring system 325
Indicator lamp 327
Malfunction 327
Tyre Pressure Loss Indicator 325
Tyre pressure 332
Checking 333
Comfort tyre pressure 333
Tyre Pressure Loss Indicator 325
Replacing tyres 330
Tyre repair set see Breakdown set 348
Tyre wear 334
Tyres see Wheels and tyres 328
Tyres with directional tread pattern 338
U
Unlocking From the inside 79
Updating the software 196
USB port 215
User administration 205
Using the telephone 251
V
V2X communication Traffic hazard alert 199
Vanity mirrors 118
Vehicle Lending or selling 202
Locking and unlocking from the in- side 79
Making safe in the event of break- down 66
Parking on a downhill gradient 176
Parking on an uphill gradient 176
Recycling 373
Returning 373
412 Index
Page 415 of 417

Unlocking or locking with Keyless Ac-
cess 75
Vehicle battery (12-volt) 320
Automatic switch-off for electrical con- sumers 322
Charging 321
Checking the electrolyte level 321
Connecting 321
Discharge 322
Disconnecting 321
Earth connection for jump start- ing 302
Explanation of symbols 320
Jump starting 302
Location 320
Preparations 321
Replacing 321
Vehicle care 355
Aerials 371
Automatic car washes 356
Car wash 355
Controls 359
Displays, screens 359
Electrically adjustable seats 359
Exterior 355, 358
Fabrics 359
Hand wash 356
High-pressure cleaners 356
Interior 355, 359
Leatherette 359
Microfibre fabrics 359
Natural leather 359
Plastic parts 359
Polishing (paintwork) 356
Rubber seals 359
Seat belts 359
Seat covers 359
Seat cushions with seat heating 359
Seats with airbag components 359
Service position for windscreen wip- ers 293
Trim parts 359
Trim strips 359
Waxing (paintwork) 356
Windows 359
Winter conditions 356
Wiper blades 293
Wooden trims 359
Vehicle data sticker 389
Vehicle functions Online 205Vehicle identification number
387, 389
Displaying 29
Position 388
Vehicle key 73
Replacing the button cell 74
Spare key 73
Vehicle overview Driver side 10
Vehicle overviews Centre console 13
Driver door 9
Front passenger side 14
Front view 7
Rear view 8
Roof 14
Vehicle settings menu Opening 31
Setting 31
Vehicle toolkit 292
Contents 292
Stowage 292
Vehicle