Electrical system

Kapitelübersicht

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on vehicles with a start/stop system
  1
• 2 Repair notes
  2
• 2.1 Rules for cleanliness
  2
• 2.2 General information
  2
• 2.3 Contact corrosion
  2
• 2.4 Routing and attachment of lines
  2
• 3 Battery
  4
• 3.1 Battery - general notes
  4
• 3.2 Types of battery
  4
• Starter, current supply, CCS
  5
• 1 Battery
  5
• 1.1 Assembly overview – battery
  5
• 1.2 Removing and installing battery
  7
• 1.3 Disconnecting and connecting battery
  10
• 1.4 Removing and installing battery tray
  11
• 1.5 Checking battery
  12
• 1.6 Charging battery
  13
• 1.7 Removing and installing earth wire with battery monitor control unit J367
  13
• 1.8 Adapting battery monitor control unit J367
  14
• 2 Alternator
  15
• 2.1 Assembly overview - alternator
  15
• 2.2 Removing and installing alternator
  16
• 2.3 Checking alternator
  25
• 2.4 Removing and installing poly V-belt pulley
  25
• 2.5 Removing and installing voltage regulator
  34
• 3 Starter motor
  37
• 3.1 Assembly overview – starter
  37
• 3.2 Removing and installing starter
  38
• 3.3 Checking starter
  42
• 4 Cruise control system (CCS)
  43
• 5 Start/stop system
  44
• 5.1 General description - start/stop system
  44
• 6 Adaptive cruise control
  45
• 6.1 Overview of fitting locations - adaptive cruise control
  45
• 6.2 Removing and installing automatic distance control unit
  45
• 6.3 Calibrating adaptive cruise control
  46
• Gauges, instruments
  47
• 1 Dash panel insert
  47
• 1.1 Assembly overview - dash panel insert
  47
• 1.2 Removing and installing dash panel insert KX2
  48
• 2 Horn
  52
• 2.1 Assembly overview - horn
  52
• 2.2 Removing and installing left horn H33/right horn H34
  52
• Windscreen wash/wipe system
  54
• 1 Windscreen wiper system
  54
• 1.1 Assembly overview - windscreen wiper system
  54
• 1.2 Moving wipers to service position
  56
• 1.3 Removing and installing wiper blade
  57
• 1.4 Removing and installing wiper arms
  58
• 1.5 Adjusting wiper arms
  60
• 1.6 Removing and installing wiper motor V
  62
• 1.7 Removing and installing rain and light sensor
  63
• 2 Windscreen washer system
  68
• 2.1 Assembly overview - windscreen washer system
  68
• 2.2 Removing and installing washer fluid reservoir
  70
• 2.3 Removing and installing windscreen washer fluid level sender
  72
• 2.4 Removing and installing windscreen washer pump
  73
• 2.5 Removing and installing spray jets
  74
• 2.6 Adjusting spray jets
  75
• 3 Washer fluid lines
  77
• Lights, bulbs, switches - exterior
  78
• 1 Headlights
  78
• 1.1 Assembly overview – headlight
  78
• 1.2 Assembly overview - daytime running lights
  82
• 1.3 Removing and installing headlight
  84
• 1.4 Adjusting headlights
  87
• 1.5 Adjusting headlight installation position
  87
• 1.6 Removing and installing front turn signal bulb 2 M92/M93
  88
• 1.7 Converting headlights from driving on right to driving on left
  89
• 1.8 Converting headlights from driving on left to driving on right
  90
• 1.9 Removing and installing headlight range control motor V48/V49
  91
• 1.10 Removing and installing dipped-beam headlight bulb
  95
• 1.11 Removing and installing headlight main beam bulb M30/M32
  98
• 1.12 Removing and installing daytime running light
  102
• 1.14 Removing and installing bulbs for cornering light L148/L149
  107
• 1.15 Removing and installing output module 1 for LED headlight A31/A27
  107
• 2 Fog lights
  109
• 2.1 Assembly overview - fog lights
  109
• 2.2 Removing and installing fog light
  109
• 2.3 Removing and installing fog light bulb L22/L23
  111
• 2.4 Adjusting fog lights
  112
• 3 Lights in exterior mirror
  113
• 3.1 Assembly overview - lights in exterior mirror
  113
• 3.2 Removing and installing turn signal
  115
• 3.3 Removing and installing entry light in exterior mirror
  115
• 4 Tail lights
  116
• 4.1 Assembly overview - tail light cluster in body
  116
• 4.2 Assembly overview - tail lights in rear lid
  116
• 4.3 Removing and installing tail light in rear lid
  117
• 4.4 Adjusting installation position of tail light
  119
• 4.5 Removing and installing tail light cluster
  120
• 4.6 Removing and installing tail light bulb M2/M4
  121
• 4.7 Removing and installing rear fog light bulb L46/L47
  121
• 4.8 Removing and installing brake and tail light bulb M21/M22
  122
• 4.9 Removing and installing reversing light bulb
  122
• 4.10 Removing and installing turn signal bulb
  122
• 5 High-level brake light
  123
• 5.1 Assembly overview – high-level brake light
  123
• 5.2 Removing and installing high-level brake light
  123
• 6 Number plate light
  126
• 6.1 Removing and installing number plate light X4/X5
  126
• 6.2 Removing and installing bulb for number plate light X4/X5
  127
• 7 Entry and start authorisation system
  128
• 7.1 Overview of fitting locations - entry and start authorisation system
  128
• 7.2 Overview of fitting locations - keyless entry system
  129
• 7.3 Removing and installing interface for entry and start system J965
  129
• 7.4 Removing and installing door exterior handle contact sensor G415/G416
  131
• 7.5 Removing and installing interior aerial 1 for entry and start authorisation R138
  131
• 7.6 Removing and installing interior aerial 2 for entry and start system R139
  132
• 7.7 Removing and installing rear bumper aerial for entry and start system R136
  132
• 7.8 Removing and installing aerial for entry and start system R134/R135
  133
• 8 Steering column switch module
  134
• 8.1 Assembly overview - steering column switch module
  134
• 8.2 Removing and installing lock cylinder
  136
• 8.3 Removing and installing ignition key withdrawal lock solenoid N376
  138
• 8.4 Removing and installing ignition/starter switch
  138
• 8.5 Removing and installing steering column switch module
  140
• 8.6 Removing and installing steering column electronics control unit J527
  142
• 8.7 Removing and installing turn signal switch E2
  146
• 8.8 Removing and installing cruise control system switch E45
  147
• 8.9 Removing and installing intermittent wiper switch E22
  147
• 8.10 Removing and installing base for steering column combination switch
  147
• 8.11 Removing and installing steering lock housing
  148
• 9 Parking aid
  151
• 9.1 Assembly overview – parking aid
  151
• 9.2 Removing and installing parking aid control unit J446
  154
• 9.3 Removing and installing front parking aid warning buzzer H22
  155
• 9.4 Removing and installing front parking aid senders
  157
• 9.5 Removing and installing rear parking aid senders
  159
• 10 Park assist steering
  161
• 10.1 Assembly overview - park assist steering
  161
• 10.2 Removing and installing control unit
  162
• 10.3 Removing and installing front senders
  162
• 10.4 Removing and installing rear senders
  163
• 11 Automatic headlight range control
  165
• 11.1 Assembly overview - automatic headlight range control
  165
• 11.2 Removing and installing cornering light and headlight range control unit J745
  166
• 12 Blind Spot Monitor
  169
• 12.1 Assembly overview - Blind Spot Monitor
  169
• 12.2 Removing and installing warning lamp for Blind Spot Monitor K303/K304
  170
• 12.3 Removing and installing Blind Spot Monitor control unit J1086/J1087
  170
• Lights, bulbs, switches - interior
  172
• 1 Lights
  172
• 1.1 Overview of fitting locations - lights in dash panel
  172
• 1.2 Overview of fitting locations - lights in front doors
  173
• 1.3 Overview of fitting locations - lights in centre console
  174
• 1.4 Overview of fitting locations - lights in luggage compartment
  175
• 1.5 Overview of fitting locations - lights in roof trim
  176
• 1.6 Removing and installing glove compartment light W6
  177
• 1.7 Removing and installing front footwell light K268/K269
  178
• 1.8 Removing and installing front footwell illumination bulb L151/L152
  180
• 1.9 Removing and installing centre console illumination bulb L150
  180
• 1.10 Removing and installing Central locking SAFELOCK function warning lamp K133
  181
• 1.11 Removing and installing light for interior door handle illumination L219/L220
  181
• 1.12 Removing and installing light 2 for door background lighting W97/W98
  182
• 1.13 Removing and installing light for door ambient lighting W86/W87
  183
• 1.14 Removing and installing door storage compartment illumination bulb L160/L161
  183
• 1.15 Removing and installing selector lever position display Y26
  184
• 1.16 Removing and installing luggage compartment light W3
  185
• 1.17 Removing and installing illuminated vanity mirror W20/W14
  185
• 1.18 Renewing front interior light bulb W1/W13/W19
  186
• 2 Controls
  188
• 2.1 Overview of fitting locations - controls in dash panel
  189
• 2.2 Overview of fitting locations - controls in front doors
  189
• 2.3 Overview of fitting locations - controls in centre console
  190
• 2.4 Overview of fitting locations - controls in roof trim
  192
• 2.5 Removing and installing rotary light switch EX1
  193
• 2.6 Removing and installing TCS and ESP button E256
  193
• 2.7 Removing and installing parking aid button E266
  194
• 2.8 Removing and installing park assist steering button E581
  194
• 2.10 Removing and installing Start/Stop operation button E693
  194
• 2.11 Removing and installing driving mode selection button E735
  194
• 2.12 Removing and installing switch module in centre console EX23/EX30
  194
• 2.13 Removing and installing hazard warning light switch EX3
  195
• 2.14 Removing and installing buttons for seat heating E653/E654
  196
• 2.15 Removing and installing glove compartment light switch E26
  196
• 2.16 Removing and installing switch for exterior mirror adjuster EX11
  197
• 2.17 Removing and installing operating unit for window regulator in driver door EX36
  198
• 2.18 Removing and installing front passenger side window regulator button E716
  199
• 2.20 Removing and installing door contact switch F2/F3
  201
• 2.22 Removing and installing convertible roof actuation button E137
  202
• 2.23 Removing and installing central switch for window regulators E643
  203
• 2.24 Removing and installing the starter button E378
  203
• 2.25 Removing and installing rear lid contact switch
  204
• 2.26 Removing and installing vanity mirror contact switch F147/F148
  204
• 2.27 Removing and installing front interior light/reading light
  204
• 2.28 Removing and installing front reading light button E633/E634
  205
• 2.29 Removing and installing emergency assistance call button E276
  205
• 3 Anti-theft alarm
  206
• 3.1 Assembly overview - interior monitor
  206
• 3.2 Removing and installing alarm horn H12
  206
• 3.3 Removing and installing anti-theft alarm sensor G578
  208
• 4 Immobiliser
  209
• 4.1 Removing and installing immobiliser control unit
  209
• 4.2 Removing and installing immobiliser reader coil
  209
• 5 Front camera for driver assist systems
  211
• 5.1 Assembly overview - front camera for assist systems
  211
• 5.2 Removing and installing front camera for driver assist systems
  211
• 6 Towing bracket
  214
• 6.1 Assembly overview - socket, trailer detector control unit
  214
• 6.2 Trailer socket
  214
• 6.3 Removing and installing trailer detector control unit J345
  215
• 7 Cigarette lighter, socket
  216
• 7.1 Removing and installing cigarette lighter U1
  216
• 7.2 Removing and installing socket illumination bulb L42
  216
• 7.3 Removing and installing rear cigarette lighter illumination bulb L32
  216
• 7.4 Removing and installing electric socket U
  216
• Wiring
  217
• 1 Relay carriers, fuse holders, electronics boxes
  217
• 1.1 Overview of fitting locations - relay carriers, fuse holders, E-boxes
  217
• 1.2 Removing and installing electronics box (E-box)
  219
• 1.3 Removing and installing relay and fuse holder in electronics box
  222
• 1.4 Removing and installing relay and fuse holder behind dash panel on driver side
  224
• 2 Select Control units
  227
• 2.1 Overview of fitting locations - control units
  227
• 2.2 Removing and installing onboard supply control unit J519
  229
• 2.3 Removing and installing data bus diagnostic interface J533
  234
• 2.4 Removing and installing bracket for onboard supply control unit J519
  236
• 2.5 Removing and installing parking aid control unit J446/park assist steering control unit J791
  238
• 3 Connectors
  240
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  240
• 4 Releasing and dismantling connector housings
  241
• 5 Repairing aerial wires
  242
• 6 Fibre optic cables
  243
• 7 Vehicle diagnosis, testing and information systems
  244