Electrical system

Kapitelübersicht

• Technical data
  1
• 1 Safety information
  1
• 1.1 Application notes and safety information for LED headlights
  1
• 1.2 Safety measures for working on vehicles with high-voltage system
  1
• 1.3 Safety precautions when working in the vicinity of high-voltage components
  2
• 1.4 Safety measures when working on vehicles with start/stop system
  2
• 2 Repair instructions
  4
• 2.1 Rules for cleanliness
  4
• 2.2 General information
  4
• 2.3 Contact corrosion
  4
• 2.4 ESD workplace
  4
• 2.5 Routing and attachment of lines
  5
• 3 Battery
  6
• 3.1 Battery - general notes
  6
• 3.2 Types of battery
  6
• Starter, current supply, CCS
  7
• 1 Battery
  7
• 1.1 Assembly overview - battery
  7
• 1.2 Removing and installing battery
  10
• 1.3 Disconnecting and connecting battery
  16
• 1.4 Removing and installing battery tray
  19
• 1.5 Checking battery
  20
• 1.6 Charging battery
  20
• 1.7 Removing and installing earth wire with battery monitor control unit J367
  21
• 1.8 Adapting battery monitor control unit J367
  22
• 2 Alternator
  23
• 2.1 Assembly overview - alternator
  23
• 2.2 Removing and installing alternator
  24
• 2.3 Checking alternator
  27
• 2.4 Removing and installing poly V-belt pulley
  27
• 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
• 4 Cruise control system (CCS)
  42
• Gauges, instruments
  43
• 1 Dash panel insert
  43
• 1.1 Assembly overview - dash panel insert
  43
• 1.2 Assembly overview - head-up display
  44
• 1.3 Removing and installing dash panel insert KX2
  45
• 1.4 Removing and installing control unit for head-up display
  49
• 2 Horn
  51
• 2.1 Assembly overview - horn
  51
• 2.2 Removing and installing treble horn H2 and bass horn H7
  51
• 2.3 Removing and installing bracket for treble horn H2/bass horn H7
  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
  57
• 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
  61
• 1.7 Renewing wiper motor
  62
• 1.8 Deactivating APP function of wiper motor
  63
• 1.9 Removing and installing rain and light sensor
  64
• 2 Windscreen washer system
  69
• 2.1 Assembly overview - windscreen washer system
  69
• 2.2 Removing and installing washer fluid reservoir
  72
• 2.3 Removing and installing windscreen washer fluid level sender
  75
• 2.4 Removing and installing windscreen washer pump
  77
• 2.5 Removing and installing spray jets
  78
• 2.6 Adjusting spray jets
  79
• 3 Rear window wiper system
  80
• 3.1 Assembly overview - rear window wiper system
  80
• 3.2 Removing and installing wiper blade
  80
• 3.3 Removing and installing wiper arm
  81
• 3.4 Adjusting wiper arm
  82
• 3.5 Removing and installing rear window wiper motor V12
  83
• 4 Rear window washer system
  85
• 4.1 Assembly overview - rear window washer system
  85
• 4.2 Adjusting spray jet
  86
• 5 Washer fluid lines
  87
• 5.1 Repairing washer fluid lines
  87
• Lights, bulbs, switches - exterior
  88
• 1 Headlights
  88
• 1.1 Assembly overview - headlight
  88
• 1.2 Removing and installing headlight
  94
• 1.3 Adjusting headlights
  95
• 1.4 Removing and installing front turn signal bulb M5/M7
  95
• 1.5 Installing repair kit for headlight housing
  98
• 1.6 Removing and installing headlight range control motor V48/V49
  100
• 1.8 Removing and installing output module 1 for LED headlight A27/A31
  103
• 1.9 Removing and installing trim cover for LED headlight
  104
• 1.10 Removing and installing retaining frame for LED headlight
  105
• 1.11 Removing and installing trim strip for LED headlight
  107
• 1.12 Removing and installing bulbs for cornering light L148/L149
  108
• 2 Lights in exterior mirror
  112
• 2.1 Assembly overview - lights in exterior mirror
  112
• 2.2 Removing and installing turn signal
  114
• 2.3 Removing and installing entry light in exterior mirror
  115
• 3 Tail lights
  117
• 3.1 Assembly overview - tail light cluster in body
  117
• 3.2 Assembly overview - tail lights in rear lid
  117
• 3.3 Removing and installing tail light in rear lid
  118
• 3.4 Removing and installing tail light cluster
  120
• 4 High-level brake light
  122
• 4.1 Assembly overview – high-level brake light
  122
• 4.2 Removing and installing bulb for high-level brake light M25
  124
• 5 Number plate light
  128
• 5.1 Removing and installing number plate light X4/X5
  128
• 6 Entry and start authorisation system
  129
• 6.1 Overview of fitting locations - entry and start authorisation system
  129
• 6.2 Overview of fitting locations - keyless entry system
  131
• 6.3 Removing and installing interface for entry and start system J965
  133
• 6.4 Removing and installing interior aerial 1 for entry and start system R138
  133
• 6.5 Removing and installing interior aerial 2 for entry and start system R139
  134
• 6.7 Removing and installing rear bumper aerial for entry and start system R136
  136
• 6.8 Removing and installing rear lid power opening control unit J938
  136
• 6.9 Removing and installing rear lid power opening sender G750/G760
  137
• 7 Steering column switch module
  138
• 7.1 Assembly overview - steering column switch module
  138
• 7.2 Removing and installing steering column combination switch
  139
• 7.3 Removing and installing immobiliser reader coil D2
  140
• 7.4 Removing and installing base for steering column combination switch
  141
• 8 Automatic headlight range control
  142
• 8.1 Assembly overview - automatic headlight range control
  142
• 8.2 Removing and installing cornering light and headlight range control unit J745
  143
• 9 Towing bracket
  146
• 9.1 Assembly overview - towing bracket socket
  146
• 9.2 Trailer socket U10
  146
• 9.3 Removing and installing trailer detector control unit J345
  146
• Lights, bulbs, switches - interior
  148
• 1 Lights
  148
• 1.1 Overview of fitting locations - lights in dash panel
  148
• 1.2 Overview of fitting locations - lights in front doors
  149
• 1.3 Overview of fitting locations - lights in rear doors
  150
• 1.4 Overview of fitting locations - lights in centre console
  151
• 1.5 Overview of fitting locations - lights in luggage compartment
  152
• 1.6 Overview of fitting locations - lights in roof trim
  153
• 1.7 Removing and installing glove compartment light W6
  154
• 1.8 Removing and installing front footwell light K268/K269
  155
• 1.9 Removing and installing Central locking SAFELOCK function warning lamp K133
  158
• 1.10 Removing and installing interior door handle illumination bulb L146/L147
  158
• 1.11 Removing and installing reflectors in door
  159
• 1.12 Removing and installing front entry light W31/W32
  160
• 1.13 Removing and installing rear interior door handle illumination bulb L221/L222
  161
• 1.15 Removing and installing light 2 for front door ambient lighting W97/W98
  163
• 1.16 Removing and installing bulb for background lighting in rear door L166/L167
  163
• 1.17 Removing and installing lights for dashboard background lighting L229/L230
  164
• 1.18 Removing and installing luggage compartment light W3/W115
  164
• 1.19 Removing and installing illuminated vanity mirror W20/W14
  165
• 1.20 Removing and installing bulb for front interior light W1
  166
• 1.21 Removing and installing bulb for rear interior light W43
  168
• 2 Controls
  170
• 2.1 Overview of fitting locations - controls in dash panel
  170
• 2.2 Overview of fitting locations - controls in front doors
  171
• 2.3 Overview of fitting locations - controls in rear doors
  172
• 2.4 Overview of fitting locations - controls in centre console
  173
• 2.5 Overview of fitting locations - controls in luggage compartment
  174
• 2.6 Overview of fitting locations - controls in roof trim
  175
• 2.7 Removing and installing rotary light switch EX1
  176
• 2.8 Removing and installing headlight range control regulator E102
  177
• 2.9 Removing and installing centre console switch module EX23/EX30
  178
• 2.10 Removing and installing hazard warning light switch EX3
  179
• 2.11 Removing and installing glove compartment light switch E26
  180
• 2.12 Removing and installing exterior mirror adjuster EX11
  181
• 2.13 Removing and installing operating unit for window regulator in driver door E512
  182
• 2.14 Removing and installing front passenger side window regulator button E716
  183
• 2.16 Removing and installing rear lid remote release button E233
  184
• 2.18 Removing and installing rear window regulator button E711/E713
  185
• 2.19 Removing and installing Telematics button module E734
  186
• 2.21 Removing and installing the starter button E378
  187
• 2.22 Removing and installing electric hinged tow coupling attachment button E474
  187
• 2.23 Removing and installing button to close rear lid in luggage compartment E406
  188
• 2.24 Removing and installing rear lid warning buzzer H32
  189
• 2.25 Removing and installing sunroof button E325
  190
• 2.26 Removing and installing front interior light/reading light
  190
• 2.27 Removing and installing rear interior light/reading light
  192
• 3 Anti-theft alarm system
  195
• 3.1 Assembly overview - interior monitor
  195
• 3.2 Removing and installing alarm horn H12
  195
• 3.3 Removing and installing anti-theft alarm sensor G578
  196
• 4 Cigarette lighter, socket
  198
• 4.1 Assembly overview - DC/AC converter with socket, 12 V-230 V
  198
• 4.2 Removing and installing cigarette lighter U1
  199
• 4.3 Removing and installing socket illumination bulb L42
  199
• 4.4 Removing and installing rear cigarette lighter illumination bulb L32
  199
• 4.5 Removing and installing electric socket U
  199
• 4.6 Removing and installing DC/AC converter with socket, 12 V-230 V U13
  199
• Wiring
  202
• 1 Relay carriers, fuse holders, electronics boxes
  202
• 1.1 Overview of fitting locations - relay carriers, fuse holders, E-boxes
  202
• 1.2 Removing and installing electronics box (E-box)
  206
• 1.3 Removing and installing relay and fuse holder in electronics box
  207
• 1.4 Removing and installing relay and fuse carrier behind dash panel
  210
• 1.5 Removing and installing main fuse carrier
  212
• 2 Select Control units
  214
• 2.1 Overview of fitting locations - control units
  214
• 2.2 Removing and installing onboard supply control unit J519
  215
• 2.3 Removing and installing data bus diagnostic interface J533
  218
• 2.4 Removing and installing bracket for onboard supply control unit J519
  219
• 3 Connectors
  222
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  222
• 4 Releasing and dismantling connector housings
  223
• 5 Repairing aerial wires
  224
• 6 Fibre optic cables
  225
• 7 Vehicle diagnosis, testing and information systems
  226