Electrical system

Kapitelübersicht

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on vehicles with start/stop system
  1
• 1.3 Operation and safety notes for gas discharge lamps
  2
• 2 Repair notes
  4
• 2.1 Contact corrosion
  4
• 2.2 Routing and attachment of lines
  4
• 3 Battery
  5
• 3.1 Battery - general notes
  5
• 3.2 Types of battery
  5
• Starter, current supply, CCS
  6
• 1 Battery
  6
• 1.1 Assembly overview - battery
  6
• 1.2 Removing and installing battery
  8
• 1.3 Disconnecting and connecting battery
  12
• 1.4 Removing and installing battery tray
  15
• 1.5 Checking battery
  16
• 1.6 Charging battery
  16
• 1.7 Removing and installing earth wire with battery monitor control unit J367
  16
• 1.8 Adapting battery monitor control unit J367
  18
• 2 Alternator
  19
• 2.1 Assembly overview - alternator
  19
• 2.2 Removing and installing alternator
  20
• 2.3 Checking alternator
  27
• 2.4 Removing and installing poly V-belt pulley
  27
• 2.5 Removing and installing voltage regulator
  36
• 3 Starter motor
  40
• 3.1 Assembly overview – starter
  40
• 3.2 Removing and installing starter
  41
• 4 Cruise control system (CCS)
  47
• 5 Start/stop system
  48
• 5.1 General description - start/stop system
  48
• 5.2 Removing and installing voltage stabiliser
  48
• 6 Adaptive cruise control
  50
• 6.1 Overview of fitting locations - adaptive cruise control
  50
• 6.2 Removing and installing automatic distance control unit
  51
• 6.3 Calibrating adaptive cruise control
  52
• Gauges, instruments
  54
• 1 Dash panel insert
  54
• 1.1 Removing and installing dash panel insert KX2
  54
• 2 Horn
  56
• 2.1 Removing and installing treble horn H2 and bass horn H7
  56
• Windscreen wash/wipe system
  58
• 1 Windscreen wiper system
  58
• 1.1 Assembly overview - windscreen wiper system
  58
• 1.2 Moving wipers to service position
  59
• 1.3 Removing and installing wiper blade
  59
• 1.4 Removing and installing wiper arms
  60
• 1.5 Adjusting wiper arms
  62
• 1.6 Removing and installing wiper motor V
  64
• 1.7 Renewing wiper motor
  66
• 1.8 Deactivating APP function of wiper motor
  69
• 1.9 Removing and installing rain and light sensor
  70
• 2 Windscreen washer system
  74
• 2.1 Assembly overview - windscreen washer system
  74
• 2.2 Removing and installing filler neck with connecting pipe
  75
• 2.3 Removing and installing washer fluid reservoir
  77
• 2.4 Removing and installing windscreen washer fluid level sender
  83
• 2.5 Removing and installing windscreen washer pump
  83
• 2.6 Removing and installing spray jets
  85
• 2.7 Adjusting spray jets
  86
• 3 Rear window wiper system
  87
• 3.1 Assembly overview - rear window wiper system
  87
• 3.2 Removing and installing wiper blade
  87
• 3.3 Removing and installing wiper arm
  88
• 3.4 Adjusting wiper arm
  89
• 3.5 Removing and installing rear window wiper motor V12
  90
• 4 Rear window washer system
  93
• 4.1 Assembly overview - rear window washer system
  93
• 4.2 Removing and installing washer fluid reservoir
  93
• 4.3 Removing and installing rear window washer pump
  94
• 4.4 Removing and installing spray jet
  94
• 4.5 Adjusting spray jet
  94
• 5 Headlight washer system
  95
• 5.1 Assembly overview - headlight washer system
  95
• 5.2 Removing and installing washer fluid reservoir
  96
• 5.3 Removing and installing headlight washer system pump V11
  96
• 5.4 Removing and installing pop-up cylinder
  97
• 5.5 Removing and installing spray jets
  98
• 5.6 Adjusting spray jets
  99
• 5.7 Bleeding headlight washer system
  99
• 6 Washer fluid lines
  101
• 6.1 Repairing washer fluid lines
  101
• Lights, bulbs, switches - exterior
  102
• 1 Headlights
  102
• 1.1 Assembly overview - headlight
  102
• 1.2 Removing and installing headlight
  106
• 1.3 Adjusting headlights
  108
• 1.4 Adjusting headlight installation position
  109
• 1.5 Removing and installing front turn signal bulb M5/M7
  111
• 1.6 Installing repair kit for headlight housing
  114
• 1.7 Converting headlights from driving on right to driving on left
  117
• 1.8 Converting headlights from driving on left to driving on right
  120
• 1.9 Removing and installing headlight range control motor V48/V49
  122
• 1.10 Removing and installing dipped-beam headlight bulb
  126
• 1.11 Removing and installing headlight main beam bulb M30/M32
  127
• 1.12 Removing and installing gas discharge bulb L13/L14
  129
• 1.13 Removing and installing side light bulb M1/M3
  131
• 1.14 Removing and installing daytime running light bulb L174/L175
  132
• 1.16 Removing and installing bulbs for cornering light L148/L149
  134
• 1.17 Removing and installing gas discharge bulb control unit J343/J344
  136
• 1.18 Removing and installing output module for headlight J667/J668
  137
• 1.20 Removing and installing swivel module position sensor G474/G475
  139
• 1.21 Removing and installing dynamic cornering light control motor V318/V319
  140
• 1.22 Removing and installing headlight holder
  140
• 2 Fog lights
  142
• 2.1 Assembly overview - fog lights
  142
• 2.2 Removing and installing fog light
  142
• 2.3 Removing and installing fog light bulb L22/L23
  144
• 3 Lights in exterior mirror
  146
• 3.1 Assembly overview - lights in exterior mirror
  146
• 3.2 Removing and installing turn signal
  148
• 3.3 Removing and installing turn signal repeater bulb L131/L132
  149
• 3.4 Removing and installing entry light in exterior mirror
  149
• 3.5 Removing and installing bulb for entry light
  149
• 4 Tail light cluster
  151
• 4.1 Assembly overview - tail light cluster in body
  151
• 4.2 Assembly overview - tail lights in rear lid
  151
• 4.3 Removing and installing tail light in rear lid
  152
• 4.4 Adjusting installation position of tail light
  154
• 4.5 Removing and installing tail light cluster
  157
• 4.6 Removing and installing tail light bulb M2/M4
  159
• 4.7 Removing and installing rear fog light bulb L46/L47
  159
• 4.8 Removing and installing brake and tail light bulb M21/M22
  160
• 4.9 Removing and installing reversing light bulb
  161
• 4.10 Removing and installing turn signal bulb
  162
• 5 High-level brake light
  164
• 5.1 Assembly overview – high-level brake light
  164
• 5.2 Removing and installing high-level brake light
  164
• 6 Number plate light
  168
• 6.1 Removing and installing number plate light X4/X5
  168
• 6.2 Removing and installing bulb for number plate light X4/X5
  169
• 7 Entry and start authorisation system
  170
• 7.1 Overview of fitting locations - keyless entry system
  170
• 7.2 Removing and installing entry and start authorisation control unit J518
  172
• 7.3 Removing and installing door exterior handle contact sensor G415/G416
  175
• 7.4 Removing and installing driver side aerial for entry and start system R134
  175
• 7.6 Removing and installing rear bumper aerial for entry and start system R136
  176
• 7.8 Removing and installing interior aerial 1 for entry and start authorisation R138
  177
• 7.9 Removing and installing interior aerial 2 for entry and start authorisation R139
  178
• 7.10 Removing and installing rear lid power opening control unit J938
  179
• 8 Steering column switch module
  181
• 8.1 Assembly overview - steering column switch module
  181
• 8.2 Removing and installing lock cylinder
  183
• 8.3 Removing and installing ignition key withdrawal lock solenoid N376
  185
• 8.4 Removing and installing ignition/starter switch
  186
• 8.5 Removing and installing steering column electronics control unit J527
  188
• 8.6 Removing and installing steering column combination switch
  193
• 8.7 Removing and installing turn signal switch E2
  194
• 8.8 Removing and installing cruise control system switch E45
  195
• 8.9 Removing and installing intermittent wiper switch E22
  195
• 8.10 Removing and installing base for steering column combination switch
  195
• 8.11 Removing and installing steering lock housing
  196
• 9 Parking aid
  198
• 9.1 Assembly overview – parking aid
  198
• 9.2 Removing and installing parking aid control unit J446
  199
• 9.3 Removing and installing parking aid loudspeaker R169
  200
• 9.4 Removing and installing rear parking aid loudspeaker R194
  200
• 9.5 Removing and installing front parking aid senders
  202
• 9.6 Removing and installing rear parking aid senders
  203
• 10 Park assist steering
  204
• 10.1 Assembly overview - park assist steering
  204
• 10.2 Removing and installing control unit
  204
• 10.3 Removing and installing front senders
  205
• 10.4 Removing and installing rear senders
  205
• 11 Automatic headlight range control
  207
• 11.1 Assembly overview - automatic headlight range control
  207
• 11.2 Removing and installing headlight range control unit
  207
• 12 Towing bracket
  209
• 12.1 Assembly overview - towing bracket socket
  209
• 12.2 Trailer socket U10
  209
• 12.3 Removing and installing trailer detector control unit J345
  210
• 13 Blind Spot Monitor
  211
• 13.1 Assembly overview - Blind Spot Monitor
  211
• 13.2 Removing and installing warning lamp for Blind Spot Monitor K303/K304
  211
• 13.3 Removing and installing Blind Spot Monitor control unit J1086/J1087
  212
• 13.4 Calibrating Blind Spot Monitor
  213
• Lights, bulbs, switches - interior
  223
• 1 Lights
  223
• 1.1 Removing and installing glove compartment light W6
  223
• 1.2 Replacing bulb for glove compartment light W6
  224
• 1.3 Removing and installing front footwell light K268/K269
  225
• 1.4 Removing and installing front footwell illumination bulb L151/L152
  226
• 1.5 Removing and installing Central locking SAFELOCK function warning lamp K133
  227
• 1.6 Removing and installing front entry light W31/W32
  227
• 1.7 Removing and installing bulb for entry light
  229
• 1.8 Removing and installing door warning lamp W30/W36
  230
• 1.9 Removing and installing rear entry light W33/W34
  230
• 1.10 Removing and installing rear door warning lamp W37/W38
  230
• 1.11 Removing and installing selector lever position display Y26
  230
• 1.12 Removing and installing luggage compartment light W3
  230
• 1.13 Removing and installing bulb for luggage compartment light W3
  232
• 1.14 Removing and installing illuminated vanity mirror W20/W14
  232
• 1.15 Removing and installing bulb for illuminated vanity mirror
  233
• 1.16 Removing and installing bulb for front interior light W1
  234
• 1.17 Removing and installing bulb for rear interior light W43
  234
• 1.18 Renewing bulb of rear interior light W47/W48
  235
• 2 Controls
  239
• 2.1 Removing and installing rotary light switch EX1
  240
• 2.2 Removing and installing headlight range control regulator E102
  241
• 2.3 Removing and installing rear lid remote release button E233
  242
• 2.4 Removing and installing TCS and ESP button E256
  242
• 2.5 Removing and installing parking aid button E266
  243
• 2.6 Removing and installing sunroof button E325
  243
• 2.7 Removing and installing the starter button E378
  243
• 2.8 Removing and installing shock absorber damping adjustment button E387
  244
• 2.9 Removing and installing button to close rear lid in luggage compartment E406
  244
• 2.10 Removing and installing right sliding door button E482
  245
• 2.11 Removing and installing tyre pressure monitor display button E492
  245
• 2.13 Removing and installing park assist steering button E581
  247
• 2.14 Removing and installing Start/Stop operation button E693
  247
• 2.15 Removing and installing left sliding door button E731
  247
• 2.16 Removing and installing operating unit in front of centre console E461
  248
• 2.17 Removing and installing hazard warning light switch E3
  249
• 2.18 Removing and installing buttons for seat heating E653/E654
  250
• 2.19 Removing and installing glove compartment light switch E26
  250
• 2.20 Removing and installing exterior mirror adjuster EX11
  251
• 2.21 Removing and installing operating unit for window regulator in driver door E512
  253
• 2.22 Removing and installing window regulator switch in front passenger door E107
  254
• 2.23 Removing and installing rear window regulator button E700/E705
  256
• 2.26 Removing and installing door contact switch F2/F3
  260
• 2.27 Removing and installing rear door contact switches F10/F11
  261
• 2.28 Removing and installing rear lid contact switch
  261
• 2.29 Removing and installing rear lid warning buzzer H32
  261
• 2.30 Removing and installing front interior light/reading light
  262
• 2.31 Removing and installing rear interior light/reading light
  263
• 2.32 Removing and installing rear interior light W47/W48
  264
• 2.33 Removing and installing front reading light button E457/E458
  266
• 3 Anti-theft alarm
  269
• 3.1 Assembly overview - interior monitor
  269
• 3.2 Removing and installing alarm horn H12
  271
• 3.3 Activating and deactivating anti-theft alarm
  272
• 3.4 Removing and installing anti-theft alarm sensor G578
  272
• 4 Immobiliser
  274
• 4.1 Removing and installing immobiliser control unit
  274
• 4.2 Removing and installing immobiliser reader coil
  274
• 5 Front camera for driver assist systems
  276
• 5.1 Removing and installing front camera for driver assist systems
  276
• 6 Cigarette lighter, socket
  277
• 6.1 Assembly overview - DC/AC converter with socket, 12 V-230 V
  277
• 6.2 Removing and installing cigarette lighter U1
  278
• 6.3 Removing and installing socket illumination bulb L42
  278
• 6.4 Removing and installing rear cigarette lighter illumination bulb L32
  278
• 6.5 Removing and installing 12 V socket 2 U18
  278
• 6.6 Removing and installing DC/AC converter with socket, 12 V-230 V U13
  278
• Wiring
  281
• 1 Relay carriers, fuse holders, electronics boxes
  281
• 1.1 Removing and installing electronics box (E-box)
  281
• 1.2 Removing and installing relay and fuse holder in electronics box
  282
• 1.3 Removing and installing relay and fuse holder behind dash panel on driver side
  285
• 2 Select Control units
  289
• 2.1 Removing and installing onboard supply control unit J519
  289
• 2.2 Removing and installing data bus diagnostic interface J533
  290
• 2.3 Removing and installing rear lid control unit J605
  292
• 3 Connectors
  293
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  293
• 4 Releasing and dismantling connector housings
  294
• 5 Repairing aerial wires
  295
• 6 Vehicle diagnosis, testing and information systems
  296