Electrical system

Chapter overview

• Starter, current supply, CCS
  1
• 1 Battery A
  1
• 1.1 General information on batteries
  1
• 1.2 Types of batteries
  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 A
  4
• 4.1 Procedure after reconnecting battery
  5
• 5 Removing and installing battery A
  6
• 6 Specified torques: battery A
  8
• 7 Starter B
  9
• 7.1 Checking starter
  9
• 7.2 Removing and installing starter on vehicles with 4, 5 and 6-cylinder engines
  10
• 7.3 Removing and installing starter on vehicles with 8-cylinder engines
  12
• 8 Specified torques: starter
  14
• 9 Alternator C
  15
• 9.1 Characteristics of compact alternator
  15
• 9.2 Checking V-belt
  17
• 9.3 Checking poly V-belt
  18
• 9.4 Checking poly V-belt (8-cylinder petrol engine)
  18
• 9.5 Checking alternator
  18
• 9.6 4-cylinder petrol engine (vehicles ▸ 04.99)
  20
• 9.7 4-cylinder petrol engine (vehicles 05.99 ▸)
  22
• 9.8 5-cylinder petrol engine (vehicles ▸ 04.99)
  23
• 9.9 5-cylinder petrol engine (vehicles 05.99 ▸)
  24
• 9.10 6-cylinder petrol engine (vehicles ▸ 04.99)
  25
• 9.11 6-cylinder petrol engine (vehicles 05.99 ▸)
  26
• 9.12 Alternator, 8-cylinder petrol engine
  27
• 9.13 4-cylinder diesel engine (vehicles ▸ 04.99)
  31
• 9.14 4-cylinder diesel engine (vehicles 05.99 ▸)
  32
• 9.15 6-cylinder diesel engine (vehicles ▸ 04.99)
  33
• 9.16 6-cylinder diesel engine (vehicles 05.99 ▸)
  34
• 9.17 Poly V-belt drives
  35
• 9.18 Testing carbon brushes for alternator C (vehicles ▸ 04.99)
  39
• 9.19 Testing carbon brushes for alternator C (vehicles 05.99 ▸)
  40
• 9.20 Removing and installing voltage regulator C1 for alternator C (vehicles ▸ 04.99)
  40
• 9.21 Removing and installing voltage regulator C1 for alternator C (vehicles ▸ 05.99)
  40
• 9.22 Removing and installing poly V-belt pulley on alternator C
  41
• 9.23 Installing poly V-belt pulley with freewheel
  42
• 10 Specified torques: alternator
  45
• 11 Removing and installing cruise control system (CCS) (vehicles with no electronic throttle)
  46
• 11.1 Cruise control system (CCS) (vehicles with diesel or 5-cylinder petrol engine)
  46
• 11.2 Cruise control system (CCS) (vehicles with 4 or 6-cylinder petrol engine)
  46
• 11.3 Adjusting rods on positioning element
  46
• 11.4 Removing positioning element
  47
• 11.5 Removing and installing vacuum pump
  48
• 11.6 Removing and installing breather valve
  49
• 11.7 Checking vacuum system for leaks
  49
• Gauges, instruments
  51
• 1 Dash panel insert
  51
• 1.1 Renewing dash panel insert
  51
• 1.2 Removing and installing dash panel insert
  52
• 1.3 Renewing bulbs in dash panel insert
  54
• 1.4 Pin assignment of connections on dash panel insert (vehicles ▸ 04.99)
  56
• 1.5 Pin assignment of connections on dash panel insert (vehicles 05.99 ▸ 04.01)
  58
• 1.6 Pin assignment of connections on dash panel insert (vehicles 05.01 ▸)
  61
• 1.7 Warning lamp symbols in dash panel insert (vehicles 11.03 ▸)
  64
• 1.8 Description of instruments
  65
• 2 Service interval display
  66
• 2.1 Resetting service interval display
  66
• Windscreen wash/wipe system
  67
• 1 Windscreen wiper system
  67
• 1.1 Removing and installing windscreen wiper system
  67
• 1.2 Removing and installing wiper arms
  72
• 1.3 Adjusting windscreen wiper park position
  73
• 1.4 Removing and installing wiper rubber blade
  74
• 1.5 Removing and installing aerodynamic wipers
  74
• 1.6 Removing and installing rain sensor G213
  76
• 1.7 Fitting a new adhesive pad to rain sensor (Valeo)
  77
• 2 Windscreen washer system
  82
• 2.1 Assembly overview - windscreen washer system
  82
• 2.3 Removing and installing windscreen and rear window washer pump V59
  85
• 2.4 Removing and installing windscreen spray jets
  86
• 2.5 Adjusting windscreen washer system spray jets
  86
• 3 Rear window wiper system
  88
• 3.1 Assembly overview - rear window wiper system
  88
• 3.2 Removing and installing rear window wiper
  88
• 3.3 Adjusting rear window wiper park position
  90
• 3.4 Renewing wiper blade
  91
• 4 Rear window washer system
  92
• 4.1 Assembly overview - rear window washer system
  92
• 4.2 Renewing spray jet
  93
• 4.3 Adjusting spray jet
  93
• 5 Headlight washer system
  94
• 5.1 Assembly overview - headlight washer system
  94
• 5.2 Removing and installing headlight washer system pump V11
  95
• 5.3 Removing and installing pop-up spray jet cylinder
  96
• 5.4 Renewing pop-up cylinder cover cap (vehicles 10.00 ▸)
  97
• 5.5 Adjusting headlight washer system spray jets
  97
• 5.6 Bleeding headlight washer system
  97
• 6 Washer fluid line hose couplings
  99
• 7 Hose repair
  100
• 8 Specified torques: window wash/wipe system
  101
• Lights, bulbs, switches - exterior
  102
• 1 Headlight
  102
• 1.1 Assembly overview - headlight (vehicles ▸ 09.00)
  102
• 1.2 Assembly overview - headlight (vehicles 10.00 ▸)
  103
• 1.3 Removing and installing headlight (vehicles ▸ 09.00
  103
• 1.4 Removing and installing headlight (vehicles 10.00 ▸)
  106
• 1.5 Removing and installing front fog light (vehicles 10.00 ▸)
  106
• 1.6 Repairing side guide pins for headlight (vehicles ▸ 09.00)
  107
• 1.7 Repairing headlight retaining tabs (vehicles 10.00 ▸)
  108
• 1.8 Renewing headlight bulbs (vehicles ▸ 09.00)
  112
• 1.9 Renewing headlight bulbs (vehicles 10.00 ▸)
  114
• 1.12 Converting headlights for use when driving on the left or right (vehicles ▸ 09.00)
  118
• 1.13 Converting headlights for use when driving on the left or right (vehicles 10.00 ▸)
  119
• 1.14 Adjusting headlights (vehicles ▸ 09.00)
  119
• 2.1 Procedure and safety notes for gas discharge bulbs
  120
• 2.4 Renewing bulbs for gas discharge lamp headlights (vehicles ▸ 09.00)
  125
• 2.5 Renewing bulbs for gas discharge lamp headlights (vehicles 10.00 ▸)
  128
• 2.9 Removing and installing control units for headlight range control
  135
• 2.10 Removing and installing front left vehicle level sensor G78 (vehicles 10.00 ▸)
  136
• 2.11 Removing and installing rear left vehicle level sensor G76 (vehicles 10.00 ▸)
  136
• 10.00 ▸)
  138
• 2.14 Adjusting headlight with gas discharge lamps
  139
• 3 Front turn signals
  140
• 3.1 Removing and installing front turn signals (vehicles ▸ 09.00)
  140
• 3.2 Renewing front left turn signal bulb M5 or front right turn signal bulb M7
  141
• 4 Removing and installing side repeater turn signal bulb or mirror turn signal bulb
  142
• 5 Tail lights
  144
• 5.1 Assembly overview - tail lights (vehicles ▸ 09.00)
  144
• 5.2 Assembly overview - tail lights for saloon (vehicles 10.00 ▸)
  145
• 5.3 Assembly overview - tail lights for Variant (vehicles 10.00 ▸)
  146
• 5.4 Removing and installing tail light (vehicles ▸ 09.00)
  146
• 5.5 Removing and installing tail light (saloon 10.00 ▸)
  147
• 5.6 Removing and installing tail light (Variant 10.00 ▸)
  147
• 5.7 Removing and installing tail light bulb holder (vehicles ▸ 09.00)
  148
• 5.8 Removing and installing tail light bulb holder (saloon 10.00 ▸)
  148
• 5.9 Removing and installing tail light bulb holder (Variant 10.00 ▸)
  149
• 6 Removing and installing number plate light X , vehicles ▸ 09.00
  150
• 7 Removing and installing number plate light X , vehicles 10.00 ▸
  151
• 8 High-level brake light bulb M25
  152
• 8.1 High-level brake light bulb M25 (saloon ▸ 09.00)
  152
• 8.2 High level brake light M25 (Variant ▸ 09.00)
  153
• 8.3 High level brake light M25 (saloon 10.00 ▸)
  153
• 8.4 High level brake light M25 (Variant 10.00 ▸)
  154
• 9 Removing and installing steering column switch
  155
• 9.1 Pin assignment on steering column switch
  157
• 10 Ignition/starter switch D and lock cylinder
  160
• 10.1 Removing and installing lock cylinder
  160
• 10.2 Removing and installing ignition/starter switch D
  161
• 10.3 Pin assignment of connection on ignition switch D
  162
• 11 Parking aid
  163
• 11.1 Assembly overview - parking aid (saloon)
  163
• 11.2 Assembly overview - parking aid (Variant)
  164
• 11.3 Removing and installing parking aid control unit J446
  164
• 11.4 Removing and installing parking aid senders
  166
• 11.5 Removing and installing rear parking aid warning buzzer H15 (saloon)
  166
• Lights, bulbs, switches - interior
  168
• 1 Immobilizer
  168
• 1.1 Renewing immobilizer control unit J362
  168
• 1.2 Removing and installing immobilizer control unit J362
  168
• 1.3 Removing and installing immobilizer reader coil D2
  169
• 1.4 Transponder
  169
• 2 Interior lights and switches
  170
• 2.1 Removing and installing glove compartment light W6
  170
• 2.2 Removing and installing interior light
  170
• 2.3 Removing and installing luggage compartment light W3
  171
• 2.4 Rear right reading light W12 and rear left reading light W11
  171
• 2.6 Removing and installing warning lamp for front passenger side airbag deactivated K145
  174
• 2.9 Removing and installing window regulator switch
  177
• 2.12 Removing and installing fuel tank flap release button E319 , (vehicles ▸ 09.00)
  181
• 2.14 Removing and installing switches in centre of dash panel
  182
• 2.15 Removing and installing door contact switch
  183
• 2.16 Removing and installing sliding sunroof adjustment regulator E139
  183
• 2.17 Removing and installing key operated switch to deactivate front passenger side airbag E224
  184
• 2.18 Removing and installing rear lid handle release button E234 (vehicles 10.00 ▸)
  185
• 2.19 Removing and installing rear lid central locking motor V53 (saloon 10.00 ▸) . . . . .
  186
• 2.20 Removing and installing rear lid central locking motor V53 (Variant 10.00 ▸)
  187
• 3 Anti-theft alarm system (ATA) with interior monitoring (IM)
  189
• 3.1 Assembly overview
  189
• 3.2 Convenience system central control unit J393
  191
• 3.5 Removing and installing alarm horn H12
  194
• 3.6 Removing and installing anti-theft alarm H8
  195
• Wiring
  196
• 1 Vehicle diagnosis, testing and information systems
  196
• 1.1 Connecting vehicle diagnosis, testing and information system VAS 5051A
  196
• 2 Removing and installing fuse holder and relay carrier
  198
• 2.1 Removing and installing fuse holder
  198
• 2.2 Removing and installing relay plate and 13 position relay carrier
  198
• 2.3 Removing and installing protective housing for control units in plenum chamber
  199
• 2.4 Removing and installing additional relay carrier with additional fuse holder
  199
• 3 Repairing wiring harness and connectors
  201