Electrical system

Kapitelübersicht

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures for working on vehicles with high-voltage system
  1
• 1.2 Safety precautions when working in the vicinity of high-voltage components
  2
• 2 Repair instructions
  3
• 2.1 Contact corrosion
  3
• 2.2 Routing and attachment of lines
  3
• 3 Battery
  4
• 3.1 Battery - general notes
  4
• 3.2 Types of battery
  4
• 4 Hazard classification for the high-voltage system
  5
• Starter, current supply, CCS
  6
• 1 Battery
  6
• 1.1 Assembly overview – battery
  6
• 1.2 Removing and installing battery
  8
• 1.3 Disconnecting and connecting battery
  11
• 1.4 Removing and installing battery tray
  13
• 1.5 Checking battery
  13
• 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
• Gauges, instruments
  15
• 1 Dash panel insert
  15
• 1.2 Assembly overview - head-up display
  15
• 1.4 Removing and installing control unit for head-up display
  18
• 1.5 Calibrating control unit for head-up display
  20
• 2 Horn
  25
• 2.1 Assembly overview - horn
  25
• 2.2 Removing and installing horn/dual tone horn H1
  25
• Windscreen wash/wipe system
  27
• 1 Windscreen wiper system
  27
• 1.1 Assembly overview - windscreen wiper system
  27
• 1.2 Moving wipers to service position
  29
• 1.3 Removing and installing wiper blade
  29
• 1.4 Removing and installing wiper arms
  30
• 1.5 Adjusting wiper arms
  32
• 1.6 Removing and installing windscreen wiper motor V216/V217
  34
• 1.7 Coding wiper motor
  35
• 1.8 Removing and installing rain and light sensor
  35
• 2 Windscreen washer system
  39
• 2.1 Assembly overview - windscreen washer system
  39
• 2.2 Removing and installing washer fluid reservoir
  40
• 2.3 Removing and installing windscreen washer pump
  42
• 2.4 Removing and installing spray jets
  43
• 2.5 Adjusting spray jets
  44
• 3 Rear window wiper system
  45
• 3.1 Assembly overview - rear window wiper system
  45
• 3.2 Removing and installing wiper blade
  45
• 3.3 Removing and installing wiper arm
  46
• 3.4 Adjusting wiper arm
  47
• 3.5 Removing and installing rear window wiper motor V12
  48
• 4 Rear window washer system
  50
• 4.1 Assembly overview - rear window washer system
  50
• 4.2 Removing and installing spray jet
  50
• 4.3 Adjusting spray jet
  51
• 5 Washer fluid lines
  52
• 5.1 Repairing washer fluid lines
  52
• Lights, bulbs, switches - exterior
  53
• 1 Headlights
  53
• 1.1 Assembly overview – headlight
  53
• 1.2 Removing and installing headlight
  57
• 1.3 Adjusting headlights
  58
• 1.4 Installing repair kit for headlight housing
  58
• 1.5 Removing and installing front turn signal bulb M5/M7
  60
• 1.6 Removing and installing headlight range control motor V48/V49
  61
• 1.8 Removing and installing headlight fan V407/V408
  68
• 1.9 Removing and installing output module 1 for LED headlight A27/A31
  71
• 2 Lights in exterior mirror
  75
• 2.1 Assembly overview - lights in exterior mirror
  75
• 2.2 Removing and installing turn signal
  76
• 2.3 Removing and installing entry light in exterior mirror
  77
• 3 Lights in exterior door handle
  79
• 3.1 Assembly overview – lights in exterior door handle
  79
• 3.2 Removing and installing bulb for exterior door handle lighting
  79
• 4 Tail lights
  81
• 4.1 Assembly overview - tail light cluster in body
  81
• 4.2 Assembly overview – design element without lighting function, rear lid
  82
• 4.3 Removing and installing design elements without lighting function
  83
• 4.4 Removing and installing tail light cluster
  84
• 4.5 Removing and installing rear fog light
  85
• 5 Charging flap unit
  87
• 5.1 Assembly overview - charging flap unit
  87
• 5.2 Removing and installing LED module for charging socket 1 L263
  87
• 6 High-level brake light
  89
• 6.1 Assembly overview – high-level brake light
  89
• 6.2 Removing and installing high-level brake light
  89
• 7 Number plate light
  92
• 7.1 Removing and installing number plate light X4/X5
  92
• 8 Entry and start authorisation system
  93
• 8.1 Overview of fitting locations - entry and start authorisation system
  93
• 8.2 Overview of fitting locations - keyless entry system
  95
• 8.3 Removing and installing interface for entry and start system J965
  99
• 8.4 Removing and installing interior aerial 1 for entry and start authorisation R138
  101
• 9 Steering column switch module
  108
• 9.1 Assembly overview - steering column electronics control unit J527
  108
• 9.2 Removing and installing steering column electronics control unit J527
  109
• 9.3 Removing and installing immobiliser reader coil D2
  110
• 10 Automatic headlight range control
  111
• 10.1 Assembly overview - automatic headlight range control
  111
• 11 Towing bracket
  112
• 11.1 Assembly overview - towing bracket socket
  112
• 11.2 Trailer socket
  112
• 11.3 Removing and installing trailer detector control unit J345
  113
• Lights, bulbs, switches - interior
  114
• 1 Lights
  114
• 1.1 Overview of fitting locations - lights in dash panel
  114
• 1.2 Overview of fitting locations - ambient lighting in doors
  115
• 1.3 Overview of fitting locations - lights in centre console
  116
• 1.4 Overview of fitting locations - lights in luggage compartment
  117
• 1.5 Overview of fitting locations - lights in roof trim
  118
• 1.8 Removing and installing footwell light W9/W10
  120
• 1.9 Removing and installing Central locking SAFELOCK function warning lamp K133
  121
• 1.11 Removing and installing luggage compartment light W3
  122
• 1.12 Removing and installing illuminated vanity mirror W20/W14
  123
• 1.13 Removing and installing front left reading lamp W65/front right reading lamp W66
  124
• 1.14 Removing and installing rear left reading light W11/rear right reading light W12
  124
• 1.15 Removing and installing dynamic light strip 1 for information in dash panel L385
  124
• 1.16 Removing and installing light 1 for centre console background lighting L193
  125
• 1.17 Removing and installing light for ambient lighting
  126
• 2 Controls
  129
• 2.1 Overview of fitting locations - controls in dash panel
  129
• 2.2 Overview of fitting locations - controls in front doors
  130
• 2.3 Overview of fitting locations - controls in rear doors
  131
• 2.4 Overview of fitting locations - controls in luggage compartment
  132
• 2.5 Overview of fitting locations - controls in roof trim
  133
• 2.6 Removing and installing operating unit for lighting EX59
  135
• 2.7 Removing and installing hazard warning lights button E229
  139
• 2.8 Removing and installing centre switch module in dash panel EX22
  139
• 2.9 Removing and installing operating unit for window regulator in driver door EX36
  139
• 2.10 Removing and installing front passenger side window regulator button E716
  140
• 2.11 Removing and installing rear window regulator button E711/E713
  141
• 2.12 Removing and installing electromechanical parking brake button E538
  141
• 2.13 Removing and installing the starter button E378
  142
• 2.14 Removing and installing front interior light/reading light
  142
• 2.15 Removing and installing rear interior light/reading light
  143
• 3 Anti-theft alarm
  145
• 3.1 Assembly overview - interior monitor
  145
• 3.2 Removing and installing alarm horn H12
  146
• 3.3 Removing and installing anti-theft alarm sensor G578
  147
• 4 Cigarette lighter, socket
  149
• 4.1 Removing and installing 12 V socket 3 U19
  149
• Wiring
  150
• 1 Relay carriers, fuse holders, electronics boxes
  150
• 1.1 Overview of fitting locations - relay carriers, fuse holders, E-boxes
  150
• 1.2 Removing and installing electronics box (E-box)
  153
• 1.3 Removing and installing fuse holder A SA
  154
• 1.4 Removing and installing fuse holder B SB
  156
• 1.5 Removing and installing fuse holder C SC
  158
• 1.6 Removing and installing bracket for relay and fuse holder behind dash panel on driver side
  159
• 2 Select Control units
  161
• 2.1 Overview of fitting locations - control units
  161
• 2.2 Assembly overview - onboard supply control unit
  162
• 2.3 Removing and installing onboard supply control unit J519
  164
• 2.4 Removing and installing bracket for onboard supply control unit J519
  166
• 2.5 Removing and installing data bus diagnostic interface J533
  168
• 2.6 Removing and installing fan for data bus diagnostic interface J533
  169
• 3 Connectors
  170
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  170
• 4 Releasing and dismantling connector housings
  171
• 5 Repairing aerial wires
  172
• 6 Fibre optic cables
  173
• 7 Vehicle diagnosis, testing and information systems
  174