Electrical system

Chapter overview

• Starter, current supply, CCS
  1
• 1 Battery
  1
• 1.1 Types of battery
  1
• 1.2 Warning notices and safety regulations
  1
• 1.3 Battery terminal connection
  1
• 2 Checking battery
  2
• 3 Charging battery
  3
• 4 Disconnecting and reconnecting battery
  4
• 4.1 Disconnecting battery
  4
• 4.2 Reconnecting battery
  4
• 5 Removing and installing battery
  6
• 5.1 Vehicles with a petrol engine
  6
• 5.2 Vehicles with a diesel engine
  7
• 6 Specified torques: battery
  9
• 7 Starter
  10
• 7.1 Checking starter B
  10
• 7.2 Removing and installing starter, manual gearbox
  10
• 7.3 Removing and installing starter, automatic gearbox
  35
• 7.4 Removing and installing starter, dual clutch gearbox (DSG)
  45
• 8 Specified torques: starter
  61
• 9 Alternator
  62
• 9.1 Securing B+ (battery positive) wire to alternator
  62
• 9.2 Checking poly V-belt
  62
• 9.3 Checking alternator C
  63
• 9.4 Alternator, 1.4 l injection engine
  63
• 9.5 Alternator 1.4 l TSI
  67
• 9.6 Alternator, 1.6 l injection engine
  73
• 9.7 Alternator, 1.4 and 1.6 l FSI engine
  78
• 9.8 Alternator, 2.0 l FSI engine
  82
• 9.9 Alternator, 2.0 l SDI engine
  90
• 9.10 Alternator, 1.9 l TDI engine
  95
• 9.11 Alternator, 2.0 l TDI engine
  101
• 9.12 Removing and installing poly V-belt pulley on alternator
  106
• 9.13 Voltage regulator for alternator
  111
• 10 Specified torques: alternator
  114
• 10.1 General specified torques for all vehicles
  114
• 10.2 1.4 l injection engine
  114
• 10.3 1.6 l injection engine and 2.0 l FSI engine
  115
• 10.4 2.0 l SDI engine, 1.9 l and 2.0 l TDI engine
  116
• 11 Cruise control system (CCS)
  118
• Gauges, instruments
  119
• 1 Dash panel insert
  119
• 1.1 Renewing dash panel insert
  119
• 1.2 Removing and installing dash panel insert
  119
• 1.3 Description of back of dash panel insert
  120
• 1.4 Warning lamp symbols in dash panel insert
  120
• 1.5 Personalisation
  122
• 2 Service interval display
  123
• 2.1 Resetting service interval display
  123
• Windscreen wash/wipe system
  124
• 1 Windscreen wiper system
  124
• 1.1 Deactivating APP function of wiper motors
  124
• 1.2 Removing and installing windscreen wiper system
  125
• 1.3 Removing and installing wiper arms
  129
• 1.4 Adjusting wiper blade park position
  129
• 1.5 Removing and installing joint-free wipers
  131
• 1.6 Rain and light sensor G397
  133
• 2 Windscreen washer system
  136
• 2.1 Assembly overview - windscreen washer system
  136
• 2.2 Removing and installing washer fluid reservoir
  137
• 2.3 Removing and installing windscreen and rear window washer pump V59
  141
• 2.4 Removing and installing windscreen washer system spray jets
  141
• 2.5 Adjusting windscreen washer system spray jets
  142
• 3 Rear window wiper system
  143
• 3.1 Assembly overview - rear window wiper system
  143
• 3.2 Removing rear window wiper
  144
• 3.3 Adjusting rear window wiper park position
  145
• 3.4 Removing and installing joint-free wiper
  146
• 4 Rear window washer system
  147
• 4.1 Assembly overview - rear window washer system
  147
• 4.2 Renewing spray jet
  148
• 4.3 Adjusting spray jet
  148
• 5 Headlight washer system
  149
• 5.1 Assembly overview - headlight washer system
  149
• 5.2 Removing and installing headlight washer system pump V11
  151
• 5.3 Removing and installing spray jet pop-up cylinders
  151
• 5.4 Removing and installing spray jet assembly
  152
• 5.5 Adjusting headlight washer system spray jets
  153
• 5.6 Bleeding headlight washer system
  153
• 6 Washer fluid line hose couplings
  154
• 7 Hose repair
  155
• 8 Specified torques: windscreen wash/wipe system
  156
• Lights, bulbs, switches - exterior
  157
• 1 Headlight
  157
• 1.1 Assembly overview - headlight
  157
• 1.2 Removing and installing headlight
  159
• 1.3 Adjusting headlight installation position
  163
• 1.4 Renewing headlight bulbs, headlight manufacturer Hella
  165
• 1.5 Renewing headlight bulbs, headlight manufacturer Valeo
  175
• 1.8 Repairing headlight retaining tabs (halogen headlight)
  189
• 1.9 Converting headlights for use when driving on the left or right (halogen headlight)
  193
• 1.10 Repairing bulb holders
  195
• 1.11 Adjusting headlights
  195
• 2 Headlights with gas discharge bulbs and cornering lights
  196
• 2.1 Operation and safety notes for gas discharge bulbs
  197
• 2.2 Assembly overview - headlight with gas discharge bulb and cornering light
  199
• 2.3 Removing and installing headlight
  201
• 2.4 Adjusting headlight installation position
  203
• 2.5 Replacing gas discharge bulbs and cornering light bulbs in headlights
  205
• 2.6 Headlight range control motor
  210
• 2.7 Dynamic cornering light control motor
  213
• 2.8 Swivel module position sensor
  213
• 2.9 Power output module for headlight
  213
• 2.10 Removing and installing gas discharge bulb control unit
  214
• 2.11 Cornering light and headlight range control unit J745
  215
• 2.12 Vehicle level sender
  217
• 2.13 Repairing headlight retaining tabs (cornering light)
  217
• 2.14 Converting headlights for use when driving on the left or right
  220
• 2.15 Adjusting headlights
  223
• 3 Fog lights
  224
• 3.1 Assembly overview - fog lights
  224
• 3.2 Removing and installing fog light
  224
• 3.3 Removing and installing fog light bulb
  225
• 3.4 Checking fog lights
  226
• 3.5 Adjusting fog lights
  226
• 4 Bulb for mirror turn signal and entry light in exterior mirror
  227
• 4.1 Turn signal repeater bulb
  227
• 4.2 Entry light in exterior mirror
  228
• 5 Tail light cluster with LED
  230
• 5.1 Tail light in side panel
  230
• 5.2 Tail light in rear lid
  232
• 6 Number plate light
  235
• 6.1 Removing and installing number plate light X
  235
• 6.2 Checking number plate light X
  235
• 7 Additional brake light
  236
• 7.1 Removing and installing additional brake light M25
  236
• 8 Steering column switch
  238
• 8.1 Assembly overview - steering column switch
  238
• 8.2 Removing and installing steering column switch
  240
• 8.3 Steering column electronics control unit J527
  247
• 8.4 Steering angle sender G85
  248
• 9 Ignition/starter switch and lock cylinder
  249
• 9.1 Removing and installing steering lock housing
  249
• 9.2 Removing and installing lock cylinder
  249
• 9.3 Removing and installing ignition/starter switch
  251
• 9.4 Ignition key withdrawal lock solenoid N376
  252
• 10 Parking aid
  254
• 10.1 Assembly overview - parking aid
  254
• 10.2 Removing and installing parking aid control unit J446
  255
• 10.3 Removing and installing rear parking aid senders
  256
• 10.4 Removing and installing parking aid warning buzzer H15
  257
• 10.5 Bonding sensor retainer in bumper cover
  258
• 10.6 Final control diagnosis
  259
• 11 Specified torques: lights, bulbs, switches - exterior
  261
• 11.1 Specified torques: headlights
  261
• 11.2 Specified torques: headlight with gas discharge lamp and cornering light
  261
• 11.3 Specified torques: fog lights
  261
• 11.4 Specified torques: tail light in side panel
  261
• 11.5 Specified torques: tail light in rear lid
  261
• Lights, bulbs, switches - interior
  262
• 1 Interior lights and switches
  262
• 2 Lights and switches in engine compartment
  265
• 2.1 Removing and installing bonnet contact switch F266
  265
• 3 Lights and switches in dash panel
  266
• 3.1 Removing and installing light switch E1
  266
• 3.2 Removing and installing glove compartment light W6 and glove compartment light switch E26
  267
• 3.4 Removing and installing warning lamp for airbag deactivated on front passenger side K145
  269
• 3.5 Removing and installing hazard warning light switch E3
  270
• 4 Lights and switches in front doors
  272
• 4.1 Removing and installing window regulator switch in front passenger door E107
  272
• 4.2 Removing and installing switch element for mirror adjustment on driver side
  272
• 4.3 Removing and installing driver side interior locking button for central locking system E308
  273
• 4.4 Components - front door locks
  275
• 4.5 Removing and installing driver side window regulator switch element
  275
• 4.6 Removing and installing fuel tank flap release button E319
  277
• 5 Lights and switches in rear doors
  280
• 5.1 Components - rear door locks
  280
• 6 Lights and switches in luggage compartment and rear lid
  281
• 6.1 Removing and installing luggage compartment light W3
  281
• 6.2 Rear lid light W51
  282
• 6.3 Removing and installing luggage compartment light switch F5
  283
• 7 Lights and switches in roof trim
  284
• 7.1 Front interior and reading lights
  284
• 7.2 Removing and installing sliding sunroof switch E8
  288
• 7.3 Rear interior and reading lights
  289
• 7.4 Removing and installing light for vanity mirror
  293
• 8 Lights and switches in centre console
  296
• 8.1 Removing and installing TCS and ESP button E256
  296
• 8.2 Removing and installing tyre pressure monitor display button E492
  296
• 8.3 Removing and installing AC/DC converter with socket, 12 V - 230 V U13
  296
• 9 12 V socket
  300
• 10 Cigarette lighter U1
  301
• 11 Horn
  302
• 11.1 Removing and installing treble horn H2
  302
• 11.2 Removing and installing bass horn H7
  303
• 11.3 Checking treble horn H2 and bass horn H7
  305
• 12 Immobiliser, vehicles up to 05/2007
  306
• 12.1 Immobiliser control unit J362
  306
• 12.2 Immobiliser reader coil D2
  306
• 12.3 Ignition key
  306
• 13 Immobiliser, vehicles as of 06/2007
  308
• 13.1 Immobiliser control unit J362
  308
• 13.2 Ignition key
  309
• 13.3 New identity on renewing all components
  309
• 13.4 Fazit system test
  309
• 14 Anti-theft alarm (ATA) to 05/2006
  310
• 14.1 Activating and deactivating anti-theft alarm
  310
• 14.3 Removing and installing interior monitoring sensor G273
  311
• 14.5 Central locking and anti-theft alarm system aerial R47
  312
• 14.6 Alarm horn H12
  312
• 15 Anti-theft alarm (ATA) from 06/2006
  315
• 15.1 General description
  315
• 15.2 Activating and deactivating anti-theft alarm
  315
• 15.4 Removing and installing interior monitoring sensor G273 and vehicle inclination sender G384
  315
• 15.5 Central locking and anti-theft alarm system aerial R47
  316
• 15.6 Alarm horn H12
  316
• Wiring
  317
• 1 Vehicle diagnosis, testing and information systems
  317
• 2 Fuse holder
  318
• 2.1 Removing and installing fuse holder on left beneath dash panel
  318
• 3 Relay carriers
  320
• 3.1 Removing and installing relay carrier on left of dash panel
  320
• 3.2 Removing and installing onboard supply control unit J519
  321
• 4 Electronics boxes
  323
• 5 Control units
  331
• 5.1 Onboard supply control unit J519
  331
• 5.2 Data bus diagnostic interface J533
  334
• 5.3 Convenience system central control unit J393
  335
• 5.4 Trailer detector control unit J345
  339
• 6 Specified torques: wiring
  342
• 6.1 Specified torques: fuse holder under dash panel on left
  342
• 6.2 Specified torques: E-box on left side of engine compartment
  342
• 6.3 Specified torques: trailer detector control unit J345
  342
• 7 Wiring harness and connector repairs
  343