Electrical system

Chapter overview

• Starter, current supply, CCS
  1
• 1 Battery A
  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 batteries
  4
• 4.1 Disconnecting and reconnecting battery, vehicles with one-battery concept
  4
• 4.3 Steps after connecting battery
  7
• 5 Removing and installing battery
  9
• 5.1 Removing and installing battery in engine compartment
  9
• 5.2 Removing and installing second battery under front right seat
  11
• 6 Specified torques: battery
  14
• 7 Starter
  15
• 7.1 Checking starter B
  15
• 7.2 Removing and installing starter, vehicles ▸ 05.00
  16
• 7.3 Removing and installing starter, vehicles 06.00 ▸
  21
• 8 Specified torques: starter
  25
• 8.1 General specified torques for all vehicles
  25
• 8.2 Vehicles ▸ 05.00
  25
• 8.3 Vehicles 06.00 ▸
  25
• 9 Alternator C
  27
• 9.1 Securing B+ (battery positive) wire to alternator
  27
• 9.2 Checking poly V-belt
  27
• 9.3 Checking alternator C
  28
• 9.4 Characteristics of compact alternators with poly V-belt drive ▸ 05.00
  29
• 9.5 Characteristics of compact alternators with poly V-belt drive 06.00 ▸
  29
• 9.6 Alternator for 4-cylinder petrol injection engine ▸ 05.00
  29
• 9.7 Alternator for 6-cylinder petrol injection engine ▸ 05.00
  33
• 9.8 Alternator for 4-cylinder diesel engine ▸ 05.00
  35
• 06.00 ▸
  38
• 9.10 Alternator for 2.0 l 4-cylinder diesel engine
  42
• 9.11 Alternator for 6-cylinder petrol injection engine 06.00 ▸
  46
• 9.12 Removing and installing poly V-belt pulley on alternator
  50
• 9.13 Voltage regulator for alternator
  54
• 10 Specified torques: alternator
  57
• 10.1 General specified torques for all vehicles
  57
• 10.2 4-cylinder fuel injection engine ▸ 05.00
  57
• 10.3 6-cylinder fuel injection engine ▸ 05.00
  57
• 10.4 4-cylinder diesel engine ▸ 05.00
  57
• 10.6 2.0 l 4-cylinder diesel engine
  58
• 10.7 6-cylinder fuel injection engine 06.00 ▸
  58
• 11 Cruise control system (CCS)
  59
• 11.1 Cruise control system (CCS) for vehicles with petrol engine ▸ 05.00
  59
• 11.2 Cruise control system (CCS) for vehicles with a TDI diesel engine ▸ 05.00
  61
• 11.3 Cruise control system (CCS) for vehicles 06.00 ▸
  62
• 11.4 Activating and deactivating cruise control system (CCS)
  62
• Gauges, instruments
  63
• 1 Dash panel insert
  63
• 1.1 Dash panel insert, vehicles ▸ 05.00
  63
• 1.2 Dash panel insert, vehicles 06.00 ▸
  67
• 2 Service interval display
  77
• 2.1 Resetting service interval display
  77
• Windscreen wash/wipe system
  78
• 1 Windscreen wiper system
  78
• 1.1 Removing windscreen wiper system (vehicles ▸ 09.98)
  78
• 1.2 Dismantling windscreen wiper system (vehicles ▸ 09.98)
  80
• 1.3 Installing windscreen wiper system (vehicles ▸ 09.98)
  82
• 1.4 Removing windscreen wiper system (vehicles 10.98 ▸ 05.00)
  84
• 1.5 Dismantling windscreen wiper system (vehicles 10.98 ▸ 05.00)
  87
• 1.6 Installing windscreen wiper system (vehicles 10.98 ▸ 05.00)
  89
• 1.7 Removing windscreen wiper system (vehicles 06.00 ▸ 04.01)
  92
• 1.8 Dismantling windscreen wiper system (vehicles 06.00 ▸ 04.01)
  94
• 1.9 Installing windscreen wiper system (vehicles 06.00 ▸ 04.01)
  96
• 1.10 Removing windscreen wiper system (vehicles 05.01 ▸ 10.03)
  99
• 1.11 Dismantling windscreen wiper system (vehicles 05.01 ▸ 10.03)
  102
• 1.12 Installing windscreen wiper system (vehicles 05.01 ▸ 10.03)
  105
• 1.13 Removing windscreen wiper system (vehicles 11.03 ▸)
  108
• 1.14 Dismantling windscreen wiper system (vehicles 11.03 ▸)
  111
• 1.15 Installing windscreen wiper system (vehicles 11.03 ▸)
  115
• 1.16 Removing and installing wiper rubber blade
  118
• 1.17 Removing and installing aerodynamic wipers
  119
• 1.18 Checking intermittent wiper regulator E38
  119
• 2 Windscreen washer system
  120
• 2.1 Assembly overview - windscreen washer system
  120
• 2.2 Removing and installing reservoir for windscreen and headlight washer system
  121
• 2.3 Removing and installing windscreen and rear window washer pump V59
  122
• 2.4 Removing and installing windscreen washer fluid level sender G33
  122
• 2.5 Removing and installing windscreen washer jets
  123
• 2.6 Checking and adjusting windscreen washer system spray jets
  126
• 3 Rear window wiper system
  129
• 3.1 Removing and installing rear window wiper
  129
• 3.2 Installing wiper arm
  130
• 3.3 Adjusting rear window wiper park position
  131
• 4 Rear window washer system
  132
• 4.1 Assembly overview - rear window washer system
  132
• 4.2 Renewing washer jet
  133
• 4.3 Adjusting washer jet
  134
• 5 Headlight washer system
  135
• 5.1 Assembly overview - headlight washer system
  135
• 5.2 Removing and installing headlight washer system pump V11
  136
• 5.3 Removing and installing pop-up washer jet cylinder
  137
• 5.4 Removing and installing washer jet assembly
  137
• 5.5 Adjusting headlight washer system jets
  138
• 5.6 Bleeding headlight washer system
  139
• 6 Washer fluid line hose couplings
  140
• 6.1 Headlight washer system
  140
• 7 Hose repair
  141
• 8 Specified torques: window wash/wipe system
  142
• 8.1 Specified torques for vehicles ▸ 09.98
  142
• 8.2 Specified torques for vehicles 10.98 ▸ 05.00
  142
• 8.3 Specified torques for vehicles 06.00 ▸ 04.01
  142
• 8.4 Specified torques for vehicles 05.01 ▸ 10.03
  143
• 8.5 Specified torques for vehicles 11.03 ▸
  143
• Lights, bulbs, switches - exterior
  144
• 1 Headlight
  144
• 1.1 Assembly overview - headlight, vehicles ▸ 05.00
  144
• 1.2 Assembly overview - headlight, vehicles 06.00 ▸
  145
• 1.3 Removing and installing headlight housing, vehicles ▸ 05.00
  146
• 1.4 Removing and installing headlight housing, vehicles 06.00 ▸
  146
• 1.5 Removing and installing headlight lens glass, vehicles ▸ 05.00
  147
• 1.6 Removing and installing reflector, vehicles ▸ 05.00
  148
• 1.7 Removing and installing front turn signals, vehicles ▸ 05.00
  149
• 1.8 Replacing headlight bulbs, vehicles ▸ 05.00
  149
• 1.9 Replacing headlight bulbs, vehicles 06.00 ▸
  150
• 1.10 Removing and installing headlight range control motor, vehicles ▸ 05.00
  152
• 1.11 Removing and installing headlight range control motor, vehicles 06.00 ▸
  153
• 1.12 Converting headlights for use when driving on the left or right (vehicles 06.00 ▸)
  154
• 1.13 Adjusting headlight
  157
• 2 Headlights with gas discharge bulbs, vehicles 06.00 ▸
  158
• 2.1 Components and senders of headlights with gas discharge bulbs
  158
• 2.2 Removing and installing headlight with gas discharge bulb
  160
• 2.3 Renewing bulbs for gas discharge headlights
  162
• 2.5 Removing and installing front left vehicle level sender G78 on front axle
  166
• 2.6 Removing and installing rear left vehicle level sender G76 on rear axle
  167
• 2.7 Removing and installing headlight range control motor
  167
• 2.8 Adapting components, headlights with gas discharge bulbs
  168
• 2.9 Converting headlights for use when driving on the left or right
  169
• 2.10 Adjusting headlights with gas discharge bulb
  171
• 3 Fog light
  172
• 3.1 Removing and installing front fog light, vehicles ▸ 05.00
  172
• 3.2 Removing and installing front fog light, vehicles 06.00 ▸
  172
• 3.3 Replacing front fog light bulb, vehicles ▸ 05.00
  173
• 3.4 Replacing front fog light bulb, vehicles 06.00 ▸
  173
• 4 Side mounted repeater turn signals
  174
• 4.1 Removing and installing side mounted repeater turn signal
  174
• 5 Removing and installing turn signal bulb in exterior mirror
  175
• 6 Rear lights
  176
• 6.1 Assembly overview - rear light in side panel, vehicles ▸ 05.00
  176
• 6.2 Assembly overview - rear light in side panel, vehicles 06.00 ▸ 10.03
  177
• 6.3 Assembly overview - rear light in side panel, vehicles 11.03 ▸
  178
• 6.4 Removing and installing rear light, vehicles ▸ 05.00
  178
• 6.5 Removing and installing rear light, vehicles 06.00 ▸ 10.03
  179
• 6.6 Removing and installing rear light, vehicles 11.03 ▸
  180
• 6.7 Removing and installing rear light bulb holder, vehicles ▸ 05.00
  181
• 6.8 Removing and installing rear light bulb holder, vehicles 06.00 ▸ 10.03
  181
• 6.9 Removing and installing rear light bulb holder, vehicles 11.03 ▸
  182
• 6.10 Assembly overview - rear light in rear lid, vehicles ▸ 05.00
  182
• 6.11 Assembly overview - rear light in rear lid, vehicles 11.03 ▸
  183
• 6.12 Removing and installing rear light bulb holder in rear lid, vehicles ▸ 05.00
  184
• 6.13 Removing and installing rear light bulb holder in rear lid, vehicles 06.00 ▸ 10.03
  184
• 6.14 Removing and installing rear light bulb holder in rear lid, vehicles 11.03 ▸
  184
• 6.15 Removing and installing rear light in rear lid, vehicles ▸ 05.00
  185
• 6.16 Removing and installing rear light in rear lid, vehicles 06.00 ▸ 10.03
  185
• 6.17 Removing and installing rear light in rear lid, vehicles 11.03 ▸
  187
• 6.18 Dismantling rear light in rear lid, vehicles ▸ 10.03
  188
• 6.19 Dismantling rear light in rear lid, vehicles 11.03 ▸
  188
• 7 Number plate light X
  190
• 7.1 Removing and installing number plate light X , vehicles ▸ 05.00
  190
• 7.2 Replacing number plate light X bulb, vehicles ▸ 05.00
  190
• 7.3 Removing and installing number plate light X , vehicles ▸ 06.00
  191
• 7.4 Removing and installing number plate light X , vehicles 11.03 ▸
  191
• 7.5 Replacing number plate light X bulb, vehicles 11.03 ▸
  192
• 8 Additional brake light
  193
• 8.2 Removing and installing additional brake light housing, vehicles ▸ 05.00
  194
• 9 Steering column switch
  196
• 9.1 Assembly overview - steering wheel, vehicles ▸ 05.00
  196
• 9.2 Removing and installing steering wheel, vehicles ▸ 05.00
  196
• 9.3 Removing and installing coil connector with slip ring, vehicles ▸ 05.00
  197
• 9.5 Removing and installing steering column switch, vehicles 06.00 ▸
  199
• 9.6 Removing and installing signal horn activation, vehicles 06.00 ▸
  202
• 9.7 Pin assignment for steering column switch, vehicles 06.00 ▸
  203
• 10 Ignition/starter switch and lock cylinder
  205
• 10.1 Removing and installing lock cylinder, vehicles ▸ 05.00
  205
• 10.2 Removing and installing lock cylinder, vehicles 06.00 ▸
  206
• 10.3 Removing and installing ignition switch, vehicles 06.00 ▸
  208
• 10.4 Pin assignment for ignition/starter switch
  208
• 11 Parking aid, vehicles 06.00 ▸
  209
• 11.1 General description
  209
• 11.2 Assembly overview - parking aid
  209
• 11.3 Removing and installing parking aid control unit
  210
• 11.4 Removing and installing front parking aid sender
  211
• 11.5 Removing and installing rear parking aid sender
  211
• 11.6 Removing and installing rear parking aid warning buzzer
  212
• 11.7 Removing and installing front parking aid warning buzzer
  212
• Lights, bulbs, switches - interior
  213
• 1 Immobilizer
  213
• 1.1 Assembly overview - immobilizer
  213
• 1.2 Removing and installing immobilizer control unit J362
  214
• 1.3 Removing and installing immobilizer reader coil D2
  215
• 1.4 Ignition key
  215
• 2 Voltage converter
  217
• 2.1 Removing and installing voltage converter
  217
• 2.2 Pin assignment of voltage converter
  217
• 3 Anti-theft alarm (ATA)
  218
• 3.2 Removing and installing immobilizer warning lamp K117
  219
• 3.3 Removing and installing alarm horn H12 for anti-theft alarm system
  220
• 3.7 Removing and installing rear lid release switch E165
  222
• 3.8 Removing and installing engine compartment light switch F214
  223
• 3.9 Removing and installing door contact switch rear (rear lid) F160
  223
• 4 Interior lights and switches
  224
• 4.1 Removing and installing light switch
  224
• 4.2 Removing and installing headlight range control adjuster E102
  225
• 4.3 Removing and installing switches in centre of dash panel
  226
• 4.4 Removing and installing interior light
  227
• 4.5 Removing and installing sliding sunroof switch E8
  228
• 4.6 Removing and installing glove compartment light W6
  228
• 4.7 Removing and installing door contact switch
  229
• 5 Horn and dual tone horn H1
  232
• 5.1 Removing and installing treble horn H2 and bass horn H7
  232
• 5.2 Removing and installing dual tone horn relay J4
  233
• 6 Taxi equipment
  234
• 7 Specified torques: lights, bulbs, switches - interior
  235
• 7.1 Specified torque: dual tone horn
  235
• 7.2 Specified torque: alarm horn H12
  235
• Wiring
  236
• 1 Vehicle diagnosis, test and information systems
  236
• 2 Relay carrier ▸ 08.97
  237
• 2.1 Removing and installing relay carrier
  237
• 2.2 Removing and installing multi-pin connector on back of relay carrier
  238
• 3 Multifunction unit (electronic central electrics) 09.97 ▸
  240
• 3.1 Removing and installing multifunction unit with relay carriers and fuse holder
  240
• 3.2 Multifunction unit control unit J501
  247
• 4 Wiring harness and connector repairs
  249
• 5 Renewal of aerial wiring
  250