Electrical system

Chapter overview

• Technical data
  1
• 1 \--- Change history ---
  1
• 2 Safety instructions
  2
• 2.1 Safety measures for work on vehicles with Start-Stop system
  2
• 2.2 Safety precautions during a test drive with measuring and testing equipment
  2
• 3 Repair instructions
  3
• 3.1 Cleanliness rules
  3
• 3.2 General Notes
  3
• 3.3 Contact corrosion
  3
• 3.4 Cable routing
  3
• 4 Battery
  5
• 4.1 Battery - general guidelines
  5
• 4.2 Battery Types
  5
• Starter, current supply, CCS
  6
• 1 Battery
  6
• 1.1 Battery A - installation overview
  6
• 1.2 Battery A - remove and install
  7
• 1.3 Battery A - disconnect and connect
  10
• 1.4 Battery Console A - remove and install
  13
• 1.5 Battery - check
  14
• 1.6 Battery - charging
  15
• 1.7 Earth cable with Battery control unit J367 - remove and install
  15
• 1.8 Adapt the Battery control unit J367
  16
• 2 Alternator
  17
• 2.1 Generator (Alternator c) - assembly overview
  17
• 2.2 Generator (Alternator c) - remove and install
  18
• 2.3 Alternator - check
  24
• 2.4 Poly-V belt pulley - remove and install
  24
• 2.5 Voltage regulator - remove and install
  34
• 3 Starter
  37
• 3.1 Starter - assembly overview
  37
• 3.2 Starter - remove and install
  38
• 3.3 Starter - check
  42
• 4 Start-Stop system
  43
• 4.1 Start-Stop system, general description
  43
• Gauges, instruments
  44
• 1 Instrument cluster
  44
• 1.1 Instrument cluster KX2 - assembly overview
  44
• 1.2 Instrument cluster KX2 - remove and install
  44
• 2 Horn
  49
• 2.1 Horn - assembly overview
  49
• 2.2 Treble tone horn H2 and Bass tone horn H7 - remove and install
  49
• Windscreen wash/wipe system
  51
• 1 Wiper system
  51
• 1.1 Wiper system - assembly overview
  51
• 1.2 Place the wiper system in service position
  53
• 1.3 Window wiper blade - remove and install
  53
• 1.4 Wiper arm - remove and install
  54
• 1.5 Wiper arms - adjust resting position
  56
• 1.6 Wiper motor V - remove and install
  58
• 1.7 Wiper motor APS function - disable
  60
• 1.8 Rain and light sensor G397 - remove and install
  61
• 1.9 Rain and light sensor G397 - repair
  64
• 2 Windscreen washer system
  66
• 2.1 Windscreen washer system - assembly overview
  66
• 2.2 Washer water reservoir filler neck - remove and install
  67
• 2.3 Washer water reservoir - remove and install
  67
• 2.4 Windscreen and rear window washer pump V59- remove and install
  69
• 2.5 Spray jets - remove and install
  70
• 2.6 Spray nozzles - adjust
  71
• 3 Rear window wiper system
  73
• 3.1 Rear window wiper system - assembly overview
  73
• 3.2 Rear wiper blade - remove and install
  74
• 3.3 Rear window wiper arm - remove and install
  74
• 3.4 Rear window wiper arm - adjust
  76
• 3.5 Rear window wiper motor V12- remove and install
  76
• 4 Rear window washer system
  79
• 4.1 Rear window washer system - assembly overview
  79
• 4.2 Washer jet - remove and install
  79
• 5 Washer water lines
  81
• 5.1 Repair the washer water lines
  81
• Lights, bulbs, switches - exterior
  82
• 1 Headlights
  82
• 1.1 Headlights - assembly overview
  82
• 1.2 Headlight - remove and install
  86
• 1.3 Headlights - adjust
  89
• 1.4 Headlights - correct the alignment position
  89
• 1.5 Side light bulb M1/M3 - remove and install
  90
• 1.6 Front turn signal bulb M5/M7 - remove and install
  91
• 1.7 Headlight housing repair set - install
  92
• 1.8 Headlight beam range control motor V48/V49 - remove and install
  93
• 1.9 Dipped beam headlight bulb M29/M31 - remove and install
  95
• 1.10 Main beam headlight bulb M30/M32- remove and install
  96
• 1.11 Daytime running light - remove and Install
  97
• 1.12 Static cornering light bulb L148/L149 - remove and install
  98
• 1.13 LED Headlight output module 1 A27 / A31 - remove and install
  98
• 2 Fog lights
  101
• 2.1 Fog lights - assembly overview
  101
• 2.2 Fog lights - remove and install
  101
• 2.3 Fog light bulb L22/L23 - remove and install
  102
• 2.4 Fog lights - adjust
  103
• 3 Turn signal in the exterior mirror housing
  104
• 3.1 Turn signal in the exterior mirror housing - general assembly overview
  104
• 3.2 Turn signal in the exterior mirror - remove and install
  106
• 4 Tail light clusters (Polo)
  107
• 4.1 Tail light cluster (Polo) - assembly overview
  107
• 4.2 Tail light bulb support (Polo) - remove and install
  109
• 4.3 Tail light (Polo) - remove and install
  110
• 4.4 Tail light cluster - installation position - correct
  111
• 4.5 Tail light bulb M2/M4 (Polo) - remove and install
  112
• 4.6 Rear brake light bulb - remove and install
  113
• 4.7 Reverse gear light bulb M16/M17 - remove and install
  114
• 4.8 Rear turn signal bulb M6/M8 - remove and install
  115
• 5 Tail light clusters (Virtus)
  117
• 5.1 Tail light cluster (Virtus) - assembly overview
  117
• 5.2 Tail light bulb support (Virtus) - remove and install
  118
• 5.3 Tail light cluster (Virtus) - remove and install
  118
• 5.4 Centre tail light “rear lid” (Virtus) - remove and install
  119
• 5.5 Tail light bulb M2/M4 (Virtus) - remove and install
  120
• 5.6 Rear brake light bulb M9/M10 (Virtus) - remove and install
  121
• 5.7 Reverse gear light bulb M16/M17 (Virtus) - remove and install
  121
• 5.8 Rear turn signal bulb M6/M8 (Virtus) - remove and install
  122
• 6 Additional brake light (Polo)
  124
• 6.1 Additional brake light (Polo) - assembly overview
  124
• 6.2 Additional brake light (Polo) - remove and install
  124
• 7 Additional brake light (Virtus)
  127
• 7.1 Additional brake light (Virtus) - assembly overview
  127
• 7.2 Auxiliary brake light (Virtus) - remove and install
  127
• 8 License plate bulb
  129
• 8.1 Number plate light - remove and install
  129
• 8.2 Number plate light X4/X5 - remove and install
  130
• 9 Access and departure authorization
  131
• 9.1 Access and departure authorization system - overview of fitting locations
  131
• 9.2 Keyless access authorization system (Kessy) - overview of fitting locations
  132
• 9.3 Interface for entry and start system J965 - remove and install
  133
• 9.4 Front door handle contact sensor G605 / G606 - remove and install
  135
• 9.5 Interior aerial 1 for entry and start system R138 - remove and install
  135
• 9.6 Interior aerial 2 for entry and start system R139 - remove and install
  136
• 9.9 Rear bumper aerial for entry and start system R136 - remove and install
  137
• 10 Steering column switch module
  139
• 10.1 Steering column switch module - assembly overview
  139
• 10.2 Lock cylinder - remove and install
  141
• 10.3 Ignition key withdrawal lock solenoid N376 - remove and install
  144
• 10.4 Ignition/starter switch - remove and install
  144
• 10.5 Steering column switch module (Kostal) - remove and install
  146
• 10.6 Steering column electronics control unit J527 - remove and install
  148
• 10.7 Turn signal switch E2 (Kostal) - remove and install
  150
• 10.8 Cruise control system switch E45 - remove and install
  152
• 10.9 Window wiper timer switch E22 - remove and install
  152
• 10.10 Steering lock set - remove and install
  152
• 11 Auxiliary parking system
  156
• 11.1 Auxiliary parking system - assembly general view
  156
• 11.2 Parking aid control unit J446 - remove and install
  157
• 11.3 Warning buzzer for front parking aid H22- remove and install
  158
• 11.4 Warning buzzer for rear parking aid H15- remove and install
  159
• 11.5 Front parking aid sensor - remove and install
  159
• 11.6 Rear parking aid sensor - remove and install
  160
• 12 Automatic headlight range control
  162
• 12.1 Automatic headlight range control - assembly overview
  162
• Lights, bulbs, switches - interior
  163
• 1 Lights
  163
• 1.1 Centre console lights - assembly overview
  163
• 1.2 Luggage compartment lights - overview of fitting locations
  164
• 1.3 Headliner lights - overview of fitting locations
  166
• 1.4 “SAFE” central locking system indicator lamp K133 - remove and install
  168
• 1.5 Selector lever position display Y26 - remove and install
  169
• 1.6 Boot light W3 - remove and install
  169
• 1.7 Bulb of the Luggage compartment light W3 - remove and install
  170
• 1.8 Passenger illuminated vanity mirror W49/W50 - remove and install
  171
• 1.9 Front interior light WX1- replace bulb
  172
• 1.10 Internal rear light WX2- replace bulb
  175
• 1.11 Rear reading light bulb W11/W12 - remove and install
  176
• 2 Control elements
  177
• 2.1 Dash panel control elements - assembly overview
  177
• 2.2 Front door control elements - assembly overview
  178
• 2.3 Rear door control elements - assembly overview
  179
• 2.4 Centre console switch module - assembly overview
  180
• 2.5 Boot lid contact switch - assembly overview
  181
• 2.6 Control elements in the headliner - assembly overview
  182
• 2.7 Light switch EX1 - remove and install
  183
• 2.9 Parking aid button E266 - remove and install
  184
• 2.10 Driving profile selection button E735 - remove and install
  185
• 2.11 Rear cap unlocking switch E165- remove and install
  185
• 2.12 Passenger airbag off control light K145 - remove and install
  185
• 2.13 Centre console switch module - remove and install
  186
• 2.14 Warning light switch EX3 - removal and install
  187
• 2.15 Exterior mirror adjustment EX11 - remove and install
  187
• 2.16 Driver door window control unit EX36 - remove and install
  188
• 2.17 Front window control switch, passenger side EX27 - remove and install
  189
• 2.19 Door contact switch F2/F3 - remove and install
  190
• 2.20 Rear door power window control switch EX28/EX29 - remove and install
  190
• 2.21 Rear door contact switch F10 / F11- remove and install
  191
• 2.22 Starter button E378 - remove and install
  191
• 2.23 Boot lid contact switch - remove and install
  192
• 2.24 Vanity mirror contact switch F298/F299 - remove and Install
  192
• 2.25 Front interior light WX1- remove and install
  192
• 2.26 Internal rear light WX2- remove and install
  195
• 3 Anti-theft alarm system
  198
• 3.1 Interior monitoring - assembly overview
  198
• 3.2 Alarm system horn H8 - remove and install
  198
• 3.3 Anti-theft alarm sensor G578 - remove and install
  199
• 4 Immobilizer
  201
• 4.1 Immobilizer control unit - remove and install
  201
• 4.2 Immobilizer reading coil - remove and install
  201
• 5 Lighter, socket
  203
• 5.1 Lighter U1 - remove and install
  203
• 5.2 Electric socket U - remove and install
  203
• 5.3 Rear cigarette lighter illumination bulb L32- remove and install
  203
• Wiring
  204
• 1 Relay carrier, fuse holder, electronic boxes
  204
• 1.1 Relay carrier, fuse carrier, electronic boxes - overview of fitting locations
  204
• 1.2 Fuse holder A SA - assembly overview
  206
• 1.3 E-Box - remove and install
  207
• 1.4 E-Box relay carrier and fuse carrier - remove and install
  209
• 1.6 Fuse carrier A SA - remove and install
  214
• 2 Control units
  217
• 2.1 Control units - assembly overview
  217
• 2.2 Control unit for the on-board electrical system J519 - remove and install
  217
• 2.3 Support of the On-board supply control unit J519 - remove and install
  219
• 2.4 Support of the Parking aid control unit J446 - remove and install
  219