Electrical system

Chapter overview

• Starter, current supply, CCS
  1
• 1 Battery
  1
• 1.1 Assembly overview - battery
  1
• 1.2 Removing and installing battery
  3
• 1.3 Removing and installing earth wire with battery monitor control unit J367
  4
• 1.4 Adapting battery monitor control unit J367
  5
• 1.5 Disconnecting and connecting battery
  5
• 1.6 Removing and installing battery tray
  8
• 1.7 Checking battery
  9
• 1.8 Charging battery
  9
• 2 Alternator
  10
• 2.1 Assembly overview - alternator
  10
• 2.2 Removing and installing alternator
  11
• 2.3 Checking alternator
  14
• 2.4 Checking poly V-belt
  14
• 2.5 Removing and installing poly V-belt pulley
  14
• 2.6 Removing and installing voltage regulator
  19
• 3 Starter motor
  24
• 3.1 Assembly overview - starter
  24
• 3.2 Removing and installing starter motor
  25
• 3.3 Checking starter
  27
• 4 Cruise control system (CCS)
  28
• 5 Start/stop system
  29
• 5.1 General description - start/stop system
  29
• 5.2 Removing and installing voltage stabiliser
  30
• Gauges, instruments
  31
• 1 Dash panel insert
  31
• 1.1 Assembly overview - dash panel insert
  31
• 1.2 Removing and installing dash panel insert KX2
  36
• 2 Horn
  38
• 2.1 Assembly overview - horn
  38
• 2.2 Removing and installing treble horn H2 and bass horn H7
  39
• Windscreen wash/wipe system
  40
• 1 windscreen wiper system
  40
• 1.1 Assembly overview - windscreen wiper system
  40
• 1.2 Moving wipers to service position
  41
• 1.3 Removing and installing wiper blade
  41
• 1.4 Removing and installing wiper arms
  42
• 1.5 Adjusting wiper arms
  44
• 1.6 Renewing windscreen wiper rubber
  46
• 1.7 Removing and installing wiper motor V
  47
• 1.8 Renewing wiper motor
  49
• 2 Windscreen washer system
  52
• 2.1 Assembly overview - windscreen washer system
  52
• 2.2 Removing and installing washer fluid reservoir
  53
• 2.3 Removing and installing windscreen washer pump
  54
• 2.4 Removing and installing spray jets
  55
• 2.5 Adjusting spray jets
  56
• 3 Rear window wiper system
  57
• 3.1 Assembly overview - rear window wiper system
  57
• 3.2 Removing and installing wiper blade
  58
• 3.3 Removing and installing wiper arm
  58
• 3.4 Adjusting wiper arm
  59
• 3.5 Removing and installing rear window wiper motor V12
  60
• 4 Rear window washer system
  61
• 4.1 Assembly overview - rear window washer system
  61
• 4.2 Removing and installing spray jet
  61
• 4.3 Adjusting spray jet
  62
• 5 Washer fluid lines
  63
• 5.1 Repairing washer fluid lines
  63
• Lights, bulbs, switches - exterior
  64
• 1 Headlights
  64
• 1.1 Assembly overview - headlight
  64
• 1.2 Removing and installing headlight
  66
• 1.3 Adjusting headlights
  67
• 1.4 Adjusting headlight installation position
  67
• 1.5 Removing and installing front turn signal bulb M5 / M7
  68
• 1.6 Installing repair kit for headlight housing
  70
• 1.7 Converting headlights from driving on right to driving on left
  73
• 1.8 Converting headlights from driving on left to driving on right
  74
• 1.9 Removing and installing headlight range control motor V48 / V49
  74
• 1.10 Removing and installing dipped beam bulb
  75
• 1.11 Removing and installing bulb for daytime running light/side light
  77
• 2 Fog lights
  79
• 2.1 Assembly overview - fog lights
  79
• 2.2 Removing and installing fog light
  79
• 2.3 Removing and installing fog light bulb
  80
• 2.4 Adjusting fog lights
  81
• 3 Turn signal repeater
  82
• 3.1 Removing and installing turn signal repeater
  82
• 3.2 Removing and installing turn signal light bulb
  83
• 4 Tail lights
  84
• 4.1 Assembly overview - tail lights in body
  84
• 4.2 Removing and installing bulb carrier
  85
• 4.3 Removing and installing tail light bulb M2 / M4
  85
• 4.4 Removing and installing tail light
  86
• 4.5 Removing and installing rear fog light bulb L46 / L47
  87
• 4.6 Removing and installing brake and tail light bulb M21 / M22
  88
• 4.7 Removing and installing reversing light bulb
  88
• 4.8 Removing and installing turn signal bulb
  89
• 5 High-level brake light
  90
• 5.1 Removing and installing additional brake light
  90
• 6 Number plate light
  93
• 6.1 Removing and installing number plate light X4 / X5
  93
• 6.2 Removing and installing bulb for number plate light X4 / X5
  93
• 7 Steering column switch module
  95
• 7.1 Steering column switch module ► 10.2013
  95
• 7.2 Steering column switch module 11.2013 ►
  103
• 8 Parking aid
  115
• 8.1 Assembly overview – parking aid
  115
• 8.2 Removing and installing rear parking aid warning buzzer H15
  115
• 8.3 Adapting volume and frequency of rear parking aid warning buzzer
  116
• 8.4 Removing and installing rear parking aid senders
  116
• 8.5 Removing and installing parking aid control unit J446
  118
• 9 Emergency braking function
  120
• 9.1 Removing and installing City Emergency Braking System
  120
• Lights, bulbs, switches - interior
  122
• 1 Lights
  122
• 1.1 Removing and installing front passenger airbag warning lamp
  122
• 1.2 Removing and installing indicator lamp for central locking SAFELOCK function
  122
• 1.3 Checking indicator lamp for central locking SAFELOCK function
  122
• 1.4 Removing and installing front interior and reading light
  123
• 1.5 Removing and installing bulbs for front interior and reading light
  126
• 1.6 Removing and installing front reading lights
  128
• 2 Controls
  130
• 2.1 Removing and installing light switch
  130
• 2.2 Removing and installing headlight range control regulator
  131
• 2.3 Removing and installing switch module in middle of dash panel
  131
• 2.4 Removing and installing start-stop operation button
  132
• 2.5 Removing and installing hazard warning light switch
  133
• 2.6 Removing and installing pushbutton for heated rear window
  133
• 2.7 Removing and installing seat heater pushbutton
  133
• 2.9 Removing and installing operating unit for window regulator in driver door E512
  134
• 2.10 Removing and installing front window regulator switch
  135
• 2.11 Removing and installing mirror adjustment switch E43 / E168
  136
• 2.13 Removing and installing centre console switch module
  138
• 2.14 Removing and installing pushbutton for emergency braking function
  139
• 2.15 Removing and installing sliding sunroof adjustment regulator
  139
• 3 Immobiliser
  140
• 3.1 Removing and installing immobiliser control unit
  140
• 3.2 Removing and installing immobiliser reader coil
  141
• 4 Cigarette lighter, socket
  142
• 4.1 Removing and installing cigarette lighter
  142
• 4.2 Removing and installing 12 V socket
  142
• 4.3 Removing and installing bulb for illuminating cigarette lighter
  142
• Wiring
  143
• 1 Relay carriers, fuse holders, electronics boxes
  143
• 1.1 Removing and installing electronics box (E-box)
  143
• 1.2 Removing and installing relay and fuse holder in electronics box
  145
• 1.3 Removing and installing relay and fuse holder behind dash panel on driver side
  147
• 2 Select Control units
  153
• 2.1 Removing and installing onboard supply control unit J519
  153
• 2.2 Removing and installing data bus diagnostic interface J533
  155
• 3 Connectors
  156
• 3.1 Repairing electrical wiring harnesses and plug-in connections
  156
• 4 Vehicle diagnosis, testing and information systems
  157
• 4.1 Online system test
  157