Electrical system

Kapitelübersicht

• Starter, current supply, CCS
  1
• 1 Battery
  1
• 1.1 Fundamentals for batteries
  1
• 1.2 Types of battery
  1
• 1.3 Warning notices and safety regulations
  1
• 1.4 Battery terminal connection
  1
• 2 Checking battery
  2
• 3 Charging battery
  3
• 4 Disconnecting and reconnecting battery
  4
• 4.1 Disconnecting and reconnecting batteries, vehicles with two-battery concept
  4
• 4.2 Disconnecting and reconnecting batteries, vehicles with electric power latching
  8
• 5 Removing and installing battery
  10
• 5.1 Removing and installing battery on right in luggage compartment
  10
• 5.2 Removing and installing battery on left in luggage compartment
  12
• 6 Battery isolation relay J7
  17
• 6.1 Removing and installing battery isolation relay J7
  17
• 7 Pyrotechnic battery isolator
  19
• 7.1 Overview of fitting locations
  19
• 7.2 Safety precautions when working on pyrotechnical battery isolator
  20
• 7.3 Disposal of pyrotechnical battery isolation units
  20
• 7.4 Removing and installing pyrotechnical battery isolator
  20
• 8 Removing and installing battery monitor control unit J367
  23
• 9 Starter, vehicles with automatic gearbox
  25
• 9.1 Checking starter B
  25
• 9.2 Starter, vehicles with 3.2 l, 177 kW injection engine, automatic gearbox AL420-6Q
  25
• 9.3 Starter, vehicles with 3.6 l, 206 kW injection engine, automatic gearbox AL420-6Q
  28
• 9.4 Starter, vehicles with 4.2 l, 246 kW injection engine, automatic gearbox AL420-6Q
  31
• 9.6 Starter, vehicles with 3.0 l, 176 kW TDI engine, automatic gearbox AL420-6Q
  38
• 9.7 Starter, vehicles with 4.9 l, 230 kW TDI engine, automatic gearbox AL750-6A
  40
• 10 Alternator
  46
• 10.1 Characteristics of alternators
  46
• 10.2 Securing B+ (battery positive) wire to alternator
  47
• 10.3 Checking poly V-belt
  47
• 10.4 Alternator, 3.2 l injection engine
  47
• 10.5 Alternator, 3.6 l injection engine
  51
• 10.6 Alternator, 4.2 l injection engine
  55
• 10.7 Alternator, 6.0 l injection engine
  59
• 10.8 Alternator, 3.0 l TDI engine
  62
• 10.9 Alternator, 4.9 l TDI engine
  66
• 10.10 Removing and installing poly V-belt pulley on alternator
  72
• 10.11 Removing and installing poly V-belt pulley with freewheel from alternator, 4.9 l TDI engine
  74
• 11 Cruise control system (CCS)
  76
• 12 Adaptive cruise control (ACC)
  77
• 12.1 Assembly overview - Automatic adaptive cruise control
  77
• 12.2 Removing and installing automatic distance control unit
  78
• 12.3 Calibrating adaptive cruise control sensor G550
  80
• 12.4 Initialising adaptive cruise control
  81
• 12.5 Removing and installing brake servo control unit J539
  81
• Gauges, instruments
  83
• 1 Dash panel insert
  83
• 1.1 Renewing dash panel insert
  83
• 1.2 Coding dash panel insert
  83
• 1.3 Removing and installing dash panel insert
  83
• 1.4 Description of back of dash panel insert
  85
• 1.5 Pin assignment of connectors on dash panel insert
  86
• 1.6 Warning lamp symbols in dash panel insert
  86
• 2 Service interval display
  88
• 2.1 Resetting service interval display
  88
• Windscreen wash/wipe system
  89
• 1 Windscreen wiper system
  89
• 1.1 General description
  89
• 1.2 Assembly overview - windscreen wiper system
  89
• 1.3 Removing and installing windscreen wiper system
  90
• 1.4 Adjusting wiper blade park position
  98
• 1.5 Removing and installing joint-free wiper blades
  99
• 1.6 Rain and light sensor G397
  100
• 2 Windscreen washer system
  103
• 2.1 Assembly overview - windscreen washer system
  103
• 2.2 Removing and installing washer fluid reservoir
  104
• 2.3 Removing and installing windscreen washer pump V5
  106
• 2.4 Removing and installing windscreen washer fluid level sender G33
  107
• 2.5 Removing and installing windscreen washer system spray jets
  107
• 2.6 Checking spray jets for windscreen washer system
  108
• 3 Headlight washer system
  109
• 3.1 Assembly overview - headlight washer system
  109
• 3.2 Removing and installing headlight washer system pump V11
  111
• 3.3 Removing and installing spray jet pop-up cylinders
  111
• 3.4 Removing and installing spray jet assembly
  113
• 3.5 Checking and adjusting washer jets
  113
• 3.6 Bleeding headlight washer system
  114
• 4 Washer fluid line hose couplings
  115
• 5 Hose repair
  116
• Lights, bulbs, switches - exterior
  117
• 1 Operation and safety notes for gas discharge bulbs
  117
• 2 Headlight with gas discharge bulb
  120
• 2.1 General description
  120
• 2.2 Assembly overview, headlights with a gas discharge bulb
  120
• 2.3 Removing and installing headlight
  122
• 2.4 Adjusting headlight installation position
  124
• 2.5 Renewing gas discharge headlight bulb
  126
• 2.6 Removing and installing headlight range control motor
  130
• 2.7 Removing and installing headlight range control unit
  132
• 2.8 Removing and installing vehicle level sender
  133
• 2.9 Coding control unit for headlight range control
  133
• 2.10 Converting headlights for use when driving on the left or right
  134
• 2.11 Adjusting headlights
  137
• 3 Headlights with two gas discharge bulbs
  138
• 3.1 General description
  138
• 3.2 Assembly overview - Headlights with two gas discharge bulbs
  138
• 3.3 Removing and installing headlight
  140
• 3.4 Adjusting headlight installation position
  142
• 3.5 Renewing bulbs in headlights with two gas discharge bulbs
  143
• 3.6 Removing and installing headlight range control motor
  148
• 3.7 Removing and installing headlight range control unit
  149
• 3.8 Removing and installing main beam headlight range control unit
  149
• 3.9 Removing and installing vehicle level sender
  150
• 3.10 Coding control unit for headlight range control
  151
• 3.11 Adjusting headlights
  151
• 4.1 General description
  152
• 4.3 Removing and installing headlight
  155
• 4.4 Adjusting headlight installation position
  158
• 4.5 Renewing gas discharge bulbs and cornering light bulbs in headlights
  158
• 4.6 Daytime running lights and side light control unit
  163
• 4.7 Gas discharge bulb control unit
  163
• 4.8 Power output module for headlight
  164
• 4.9 Headlight range control unit J431
  166
• 4.10 Headlight range control motor
  166
• 4.11 Dynamic cornering light control motor
  168
• 4.12 Swivel module position sensor
  168
• 4.13 Headlight screen adjustment solenoid
  169
• 4.14 Removing and installing vehicle level sender
  169
• 4.15 LED module for daytime running light and side light
  169
• 4.16 Adjusting headlights
  170
• 5.1 General description
  171
• 5.2 Removing and installing headlight
  171
• 5.4 Adjusting headlight installation position
  175
• 5.5 Renewing gas discharge bulbs and cornering light bulbs in headlights
  176
• 5.6 Daytime running lights and side light control unit
  181
• 5.7 Gas discharge bulb control unit
  181
• 5.8 Power output module for headlight
  182
• 5.9 Headlight range control unit J431
  184
• 5.10 Headlight range control motor
  184
• 5.11 Dynamic cornering light control motor
  186
• 5.12 Swivel module position sensor
  186
• 5.13 Headlight screen adjustment solenoid
  187
• 5.14 LED module for daytime running light and side light
  187
• 5.15 Adjusting headlights
  188
• 6.1 General description
  189
• 6.2 Assembly overview - headlight
  190
• 6.3 Removing and installing headlight
  192
• 6.4 Adjusting headlights
  193
• 6.5 Adjusting headlight installation position
  193
• 6.6 Removing and installing front turn signal bulb M5 / M7
  193
• 6.7 Removing and installing headlight range control motor V48 / V49
  194
• 6.8 Removing and installing gas discharge bulb L13 / L14
  196
• 6.9 Removing and installing LED modules for daytime running light and side light L176 / L177
  197
• 6.10 Removing and installing bulbs for static cornering light L148 / L149
  198
• 6.11 Removing and installing control unit for daytime running light and side light J860 / J861
  198
• 6.12 Removing and installing gas discharge bulb control unit J343 / J344
  199
• 6.13 Removing and installing output module for headlight J667 / J668
  200
• 6.14 Removing and installing turn signal control unit
  201
• 6.15 Removing and installing control unit for cornering light and headlight range control J745
  201
• 6.16 Removing and installing headlight screen adjustment solenoid
  202
• 6.17 Removing and installing dynamic cornering light control motor V318 / V319
  202
• 6.18 Removing and installing swivel module position sensor G474 / G475
  202
• 6.19 Removing and installing control motor for VARILIS headlight V446 / V447
  202
• 6.20 Removing and installing control motor sender for VARILIS headlight G695 / G696
  202
• 7 Fog lights
  203
• 7.1 Removing and installing fog light
  203
• 7.2 Removing and installing fog light bulb
  204
• 7.3 Adjusting fog lights
  204
• 8 Front side marker light bulb
  205
• 8.1 Removing and installing side marking light bulb
  205
• 9 Turn signal repeater bulb and entry light in exterior mirror
  206
• 9.1 Removing and installing turn signal repeater
  206
• 9.2 Removing and installing entry light in exterior mirror
  206
• 10 Tail light cluster with LED
  208
• 10.1 Tail light (tail light cluster) with LEDs in side panel
  208
• 10.2 Tail light (tail light cluster) in rear lid
  210
• 10.3 Tail light (tail light cluster) gaps and shut lines
  213
• 10.4 Checking tail light (tail light cluster) function
  214
• 11 Number plate light
  216
• 11.1 Number plate light X
  216
• 11.2 Luminescent number plate
  217
• 12 High-level brake lights (additional brake lights)
  219
• 12.1 Removing and installing additional brake light
  219
• 12.2 Removing and installing bulb carrier
  219
• 13 Steering column switch
  221
• 13.1 Assembly overview - steering column switch
  221
• 13.2 Removing and installing steering column switch
  223
• 13.3 Dismantling and assembling steering column switch
  225
• 13.4 Pin assignment on steering column switch
  227
• 13.5 Coding steering column electronics control unit J527
  228
• 14 Entry and start authorisation
  230
• 14.1 Emergency release
  230
• 14.2 Entry and start authorisation switch E415
  230
• 14.3 Entry and start authorisation button E408
  232
• 14.4 Entry and start authorisation control unit J518
  234
• 14.5 Assembly overview of entry and start authorisation aerials
  236
• 14.6 Removing and installing entry and start authorisation aerials
  238
• 14.7 Adapting aerial parameters for entry and start authorisation aerials
  241
• 15 Parking aid (PDC)
  243
• 15.1 General description
  243
• 15.2 Assembly overview - parking aid
  243
• 15.3 Parking aid control unit J446
  245
• 15.4 Front parking aid senders
  246
• 15.5 Rear parking aid senders
  247
• 15.6 Front parking aid display
  248
• 15.7 Rear parking aid display Y15
  249
• 15.8 Parking aid warning buzzer
  249
• 16 Lane change assist (Side Assist)
  252
• 16.1 General description
  252
• 16.2 Removing and installing lane change assist control unit with radar sensor
  252
• 16.3 Removing and installing lane change assist warning lamps in exterior mirror
  253
• 16.4 Calibrating lane change assist
  254
• 16.5 Lane change assist control unit final control diagnosis
  261
• 16.6 Coding lane change assist control unit
  261
• 17 Reverse camera (Rear Assist)
  262
• 17.1 General description
  262
• 17.2 Assembly overview - reversing camera system
  262
• 17.3 Removing and installing reversing camera
  263
• 17.4 Reversing camera system control unit J772
  264
• 17.5 Calibrating reversing camera system
  265
• 18 Front camera for driver assist systems R242
  270
• 18.1 General description
  270
• 18.2 Removing and installing front camera for driver assist systems R242
  270
• 18.3 Calibrating front camera for driver assist systems R242
  271
• 18.4 Coding camera control unit J852
  271
• 18.5 Removing and installing windscreen heater for lane departure warning
  271
• 19 Tyre pressure monitor (TPM) from 2007 onwards
  272
• 19.1 Tyre pressure monitor control unit J502
  273
• 19.2 Tyre pressure sensors
  274
• 19.3 Transmitter units in wheel housing
  274
• 19.4 Tyre pressure monitor aerial R207
  275
• Lights, bulbs, switches - interior
  276
• 1 Interior lights and switches
  276
• 1.1 Rear left footwell light L106 or rear right footwell light L107
  276
• 2 Lights and switches in dash panel
  277
• 2.1 Light switch E1
  277
• 2.2 Switches and instruments illumination regulator E20 and trip recorder zeroing switch E123
  277
• 2.3 Rear roller blind switch E149 and parking aid button E266
  278
• 2.4 Glove compartment light W6
  279
• 2.5 Glove compartment light switch E26
  280
• 2.6 Steering column adjustment switch E167
  281
• 2.7 Front left footwell lighting bulb L151 or front right footwell light bulb L152
  281
• 2.8 Radio controlled clock Y8
  282
• 3 Lights and switches in front doors
  287
• 3.2 Front right window regulator switch E41
  288
• 3.3 Front interior locking buttons for central locking system E308 and E309
  288
• 3.4 Door opener lighting L108 and L109
  290
• 3.5 Front door contact switch
  291
• 3.6 Front left entry light W31 or front right entry light W32
  291
• 3.7 Door warning lamps W30 and W36
  292
• 4 Lights and switches in rear doors
  294
• 4.1 Rear window regulator switches E52 and E54
  294
• 4.2 Rear interior locking buttons for central locking system E310 and E311
  294
• 4.3 Rear door opener lighting L110 and L111
  296
• 4.4 Rear door contact switch
  297
• 4.5 Rear entry lights W33 and W34
  297
• 4.6 Rear door warning lamps W37 and W38
  298
• 5 Lights and switches in luggage compartment
  300
• 5.1 Luggage compartment lights W18 and W35
  300
• 5.2 Luggage compartment light switch F5
  301
• 5.3 Rear lid closing button, in rear lid E406
  301
• 6 Lights and switches in roof trim
  303
• 6.1 Front interior light W1
  303
• 6.2 Front reading lights W19 and W13
  305
• 6.3 Sunroof switch E8
  306
• 6.4 Rear interior and reading lights
  306
• 6.5 Rear interior light buttons E327 and E329
  308
• 6.6 Garage door opener
  308
• 6.7 Switch unit in roof module
  309
• 7 Lights and switches in centre console
  311
• 7.2 Key operated switch to deactivate front passenger side airbag E224
  311
• 7.3 Starter button E408
  312
• 7.6 Switch unit for adjustable rear seat, 4-seater
  314
• 7.7 Switch unit for height-adjustment of lumbar support of rear seat, 5-seater
  315
• 8 Cigarette lighter
  316
• 8.1 Cigarette lighter U1
  316
• 9 Horn
  317
• 9.1 Treble tone horn H2
  317
• 9.2 Bass tone horn H7
  318
• Wiring
  320
• 1 Vehicle diagnosis, testing and information systems
  320
• 2 Fuse holder
  321
• 2.1 Fuse holder under dash panel on left
  321
• 2.2 Pre-fuse box in luggage compartment on left
  321
• 2.3 Thermal fuse box on driver side
  324
• 3 Relay carrier
  326
• 3.1 Relay carrier in front right footwell
  326
• 4 Electronics boxes
  328
• 4.1 E-box on left in luggage compartment
  328
• 4.2 E-box on right in plenum chamber
  330
• 5 Control units
  333
• 5.1 Onboard supply control unit
  333
• 5.2 Roof electronics control unit
  335
• 6 Wiring harness and connector repairs
  336