Electrical system

Kapitelübersicht

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety precautions when working on vehicles with a start/stop system
  1
• 1.3 Operation and safety notes for gas discharge lamps
  2
• 2 General information
  4
• 3 Repair instructions
  5
• 3.1 Contact corrosion
  5
• 3.2 Routing and attachment of lines
  5
• 4 Battery
  6
• 4.1 Types of battery
  6
• 4.2 Battery - general notes
  6
• 5 Hazard classification of high-voltage system
  7
• Starter, current supply, CCS
  8
• 1 Battery
  8
• 1.1 Assembly overview – battery
  8
• 1.2 Removing and installing battery
  10
• 1.3 Disconnecting and connecting battery
  13
• 1.4 Removing and installing battery tray
  17
• 1.5 Checking battery
  18
• 1.6 Charging battery
  19
• 1.7 Removing and installing earth wire with battery monitor control unit J367
  19
• 1.8 Adapting battery monitor control unit J367
  19
• 2 Alternator
  20
• 2.1 Assembly overview - alternator
  20
• 2.2 Removing and installing alternator
  34
• 2.3 Checking alternator
  56
• 2.4 Checking poly V-belt
  57
• 2.5 Removing and installing poly V-belt pulley
  57
• 2.6 Removing and installing voltage regulator
  67
• 3 Starter motor
  72
• 3.1 Assembly overview – starter
  72
• 3.2 Removing and installing starter
  75
• 3.3 Checking starter
  95
• 4 Cruise control system (CCS)
  96
• 5 Start/stop system
  97
• 5.1 General description - start/stop system
  97
• 5.2 Removing and installing voltage stabiliser
  99
• 6 Adaptive cruise control
  104
• 6.1 Overview of fitting locations - adaptive cruise control
  104
• 6.2 Removing and installing automatic distance control unit
  104
• 6.3 Removing and installing button for adaptive cruise control
  105
• 6.4 Removing and installing trim for radar sensor
  106
• 6.5 Calibrating adaptive cruise control
  106
• Gauges, instruments
  107
• 1 Dash panel insert
  107
• 1.1 Assembly overview - dash panel insert
  107
• 1.2 Removing and installing dash panel insert KX2
  107
• 1.3 Removing and installing ambient temperature sensor
  110
• 2 Clock
  111
• 2.1 Removing and installing clock
  111
• 3 Horn
  112
• 3.1 Assembly overview - horn
  112
• 3.2 Removing and installing treble horn H2 and bass horn H7
  113
• 3.3 Removing and installing horn/dual tone horn H1
  115
• Windscreen wash/wipe system
  117
• 1 Windscreen wiper system
  117
• 1.1 Assembly overview - windscreen wiper system
  117
• 1.2 Moving wipers to service position
  119
• 1.3 Removing and installing wiper blade
  119
• 1.4 Removing and installing wiper arms
  121
• 1.5 Adjusting wiper arms
  122
• 1.6 Removing and installing wiper motor V
  124
• 1.7 Deactivating APP function of wiper motor
  127
• 1.8 Removing and installing rain and light sensor
  127
• 2 Windscreen washer system
  131
• 2.1 Assembly overview - windscreen washer system
  131
• 2.2 Removing and installing washer fluid reservoir
  133
• 2.3 Removing and installing windscreen washer fluid level sender
  136
• 2.4 Removing and installing windscreen washer pump
  137
• 2.5 Removing and installing spray jets
  139
• 2.6 Adjusting spray jets
  140
• 2.7 Removing and installing filler pipe for washer fluid reservoir
  140
• 3 Rear window wiper system
  142
• 3.1 Assembly overview - rear window wiper system
  142
• 3.2 Removing and installing wiper blade
  144
• 3.3 Removing and installing wiper arm
  145
• 3.4 Adjusting wiper arm
  147
• 3.5 Removing and installing rear window wiper motor V12
  149
• 4 Rear window washer system
  153
• 4.1 Assembly overview - rear window washer system
  153
• 4.2 Removing and installing washer fluid reservoir
  155
• 4.3 Removing and installing rear window washer pump
  156
• 4.4 Removing and installing spray jet
  156
• 4.5 Adjusting spray jet
  157
• 5 Headlight washer system
  158
• 5.1 Assembly overview - headlight washer system
  158
• 5.2 Removing and installing washer fluid reservoir
  159
• 5.3 Removing and installing headlight washer system pump V11
  160
• 5.4 Removing and installing spray jets
  161
• 5.5 Adjusting spray jets
  162
• 5.6 Removing and installing pop-up cylinder
  162
• 5.7 Bleeding headlight washer system
  164
• 6 Washer fluid lines
  165
• 6.1 Repairing washer fluid lines
  165
• 6.2 Washer fluid line hose couplings
  165
• Lights, bulbs, switches - exterior
  166
• 1 Headlights
  166
• 1.1 Assembly overview – headlight
  166
• 1.2 Removing and installing headlight
  173
• 1.3 Adjusting headlights
  175
• 1.4 Adjusting headlight installation position
  175
• 1.5 Removing and installing front turn signal bulb M5/M7
  177
• 1.6 Converting headlights from driving on right to driving on left
  181
• 1.7 Converting headlights from driving on left to driving on right
  185
• 1.8 Removing and installing headlight range control motor V48/V49
  189
• 1.9 Removing and installing headlight dipped beam bulb
  190
• 1.10 Removing and installing headlight main beam bulb M30/M32
  194
• 1.11 Removing and installing gas discharge bulb L13/L14
  195
• 1.12 Removing and installing side light bulb M1/M3
  197
• 1.13 Removing and installing daytime running light bulb L174/L175
  200
• 1.14 Removing and installing bulbs for cornering light L148/L149
  202
• 1.15 Removing and installing gas discharge bulb control unit J343/J344
  202
• 2 Fog lights
  207
• 2.1 Assembly overview - fog lights
  207
• 2.2 Removing and installing fog light
  207
• 2.3 Removing and installing fog light bulb L22/L23
  208
• 2.4 Removing and installing static cornering light bulb
  210
• 2.5 Adjusting fog lights
  210
• 3 Turn signal repeater
  211
• 3.1 Removing and installing turn signal repeater
  211
• 3.2 Removing and installing turn signal light bulb
  212
• 4 Tail lights
  214
• 4.1 Assembly overview – tail light cluster in body
  214
• 4.2 Removing and installing bulb carrier
  217
• 4.3 Removing and installing tail light cluster
  219
• 4.4 Removing and installing tail light bulb M2/M4
  221
• 4.5 Removing and installing rear fog light bulb L46/L47
  224
• 4.6 Removing and installing brake and tail light bulb M21/M22
  226
• 4.7 Removing and installing reversing light bulb
  229
• 4.8 Removing and installing turn signal bulb
  231
• 5 High-level brake light
  234
• 5.1 Removing and installing high-level brake light
  234
• 5.2 Removing and installing bulb for high-level brake light M25
  237
• 6 Number plate light
  238
• 6.1 Removing and installing number plate light X4/X5
  238
• 6.2 Removing and installing bulb for number plate light X4/X5
  239
• 7 Steering column switch module
  240
• 7.1 Assembly overview - steering column switch module
  240
• 7.2 Removing and installing steering column switch module
  242
• 7.3 Removing and installing steering column electronics control unit J527
  247
• 7.4 Removing and installing steering column combination switch
  253
• 7.5 Removing and installing ignition/starter switch
  255
• 7.6 Removing and installing lock cylinder
  257
• 7.7 Removing and installing steering lock housing
  259
• 7.8 Removing and installing ignition key withdrawal lock solenoid N376
  260
• 8 Parking aid
  262
• 8.1 Assembly overview – parking aid
  262
• 8.2 Removing and installing parking aid control unit J446
  263
• 8.3 Removing and installing front parking aid warning buzzer H22
  264
• 8.4 Removing and installing rear parking aid warning buzzer H15
  264
• 8.5 Adapting volume and frequency of rear parking aid warning buzzer
  265
• 8.6 Removing and installing front parking aid senders
  265
• 8.7 Removing and installing rear parking aid senders
  265
• 9 Park assist steering
  267
• 9.1 Assembly overview - park assist steering
  267
• 9.2 Removing and installing control unit
  269
• 9.3 Removing and installing front senders
  269
• 9.4 Removing and installing rear senders
  270
• 9.5 Removing and installing front warning buzzer
  270
• 9.6 Removing and installing rear warning buzzer
  271
• 10 Automatic headlight range control
  273
• 10.1 Removing and installing headlight range control unit
  273
• 11 Towing bracket
  274
• 11.1 Assembly overview - towing bracket socket
  274
• 11.2 Removing and installing trailer socket U10
  275
• 11.3 Removing and installing trailer detector control unit J345
  278
• Lights, bulbs, switches - interior
  281
• 1 Lights
  281
• 1.1 Overview of fitting locations - lights in dash panel
  281
• 1.2 Overview of fitting locations - lights in centre console
  282
• 1.3 Overview of fitting locations - lights in luggage compartment
  283
• 1.4 Overview of fitting locations - lights in roof trim
  284
• 1.5 Removing and installing glove compartment light W6
  285
• 1.6 Replacing bulb for glove compartment light W6
  286
• 1.7 Removing and installing Central locking SAFELOCK function warning lamp K133
  287
• 1.8 Removing and installing selector lever position display Y26
  288
• 1.9 Removing and installing luggage compartment light W3
  288
• 1.10 Removing and installing bulb for luggage compartment light W3
  290
• 1.11 Removing and installing illuminated vanity mirror W20/W14
  291
• 1.12 Renewing front interior light bulb W1/W13/W19
  292
• 1.13 Renewing bulb of rear interior light W47/W48
  294
• 2 Controls
  296
• 2.1 Overview of fitting locations - controls in dash panel
  296
• 2.2 Overview of fitting locations - controls in front doors
  297
• 2.3 Overview of fitting locations - controls in rear doors
  298
• 2.4 Overview of fitting locations - controls in centre console
  299
• 2.5 Overview of fitting locations - controls in luggage compartment
  300
• 2.6 Overview of fitting locations - controls in roof trim
  301
• 2.7 Removing and installing buttons in dash panel
  303
• 2.8 Removing and installing mirror adjustment switch E43/E168
  311
• 2.9 Removing and installing operating unit for window regulator in driver door E512
  312
• 2.10 Removing and installing window regulator switch in front passenger door E107
  313
• 2.12 Removing and installing door contact switch F2/F3
  315
• 2.13 Removing and installing rear door contact switches F10/F11
  315
• 2.14 Removing and installing contact strip in sliding door, B-pillar F353/F352
  316
• 2.15 Removing and installing contact strip in sliding door F353/F352
  317
• 2.16 Removing and installing rear lid release switch E165
  318
• 2.17 Removing and installing central locking switch in left wing door F213
  318
• 2.18 Removing and installing rear lid contact switch
  318
• 2.19 Removing and installing wing door contact switch
  318
• 2.20 Removing and installing vanity mirror contact switch F147/F148
  319
• 2.21 Removing and installing front interior light/reading light
  319
• 2.22 Removing and installing rear interior light/reading light
  320
• 3 Anti-theft alarm
  323
• 3.1 Assembly overview - interior monitor
  323
• 3.2 Removing and installing alarm horn H12
  324
• 3.3 Activating and deactivating anti-theft alarm
  325
• 3.4 Removing and installing anti-theft alarm sensor G578
  325
• 4 Immobiliser
  328
• 4.1 General description - immobiliser
  328
• 4.2 Removing and installing immobiliser control unit
  328
• 4.3 Removing and installing immobiliser reader coil
  328
• 5 Front camera for driver assist systems
  329
• 5.1 Assembly overview - front camera for driver assist systems R242
  329
• 5.2 Removing and installing front camera for driver assist systems
  331
• 5.3 Removing and installing windscreen heater for lane departure warning Z67
  332
• 5.4 Calibrating front camera for driver assist systems R242
  332
• 6 Cigarette lighter, socket
  333
• 6.1 Assembly overview - cigarette lighter, 12 V socket
  333
• 6.2 Removing and installing cigarette lighter U1
  333
• 6.3 Removing and installing socket illumination bulb L42
  334
• 6.4 Removing and installing rear cigarette lighter illumination bulb L32
  334
• 6.5 Removing and installing 12 V socket 3 U19
  334
• Wiring
  335
• 1 Relay carriers, fuse holders, electronics boxes
  335
• 1.1 Overview of fitting locations - relay carriers, fuse holders, E-boxes
  335
• 1.2 Removing and installing electronics box (E-box)
  336
• 1.3 Removing and installing coupling station electronics box
  339
• 1.4 Removing and installing additional relay carrier of electronics box
  340
• 1.5 Removing and installing relay and fuse holder behind dash panel on driver side
  341
• 1.6 Removing and installing relay carrier behind dash panel on driver side
  341
• 1.7 Removing and installing relay carrier on onboard supply control unit
  342
• 1.8 Removing and installing fuse holder C [SC]
  343
• 2 Select Control units
  344
• 2.1 Overview of fitting locations - control units
  344
• 2.2 Removing and installing onboard supply control unit J519
  345
• 2.3 Removing and installing data bus diagnostic interface J533
  346
• 2.4 Removing and installing special vehicle control unit J608
  347
• 2.5 Coding special vehicle control unit
  349
• 3 Connectors
  350
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  350
• 3.2 Converting airbag and belt tensioner wire
  350
• 4 Releasing and dismantling connector housings
  355
• 5 Cleaning contact surfaces
  356
• 6 Repairing aerial wires
  357
• 7 Fibre optic cables
  358
• 8 Vehicle diagnosis, testing and information systems
  359