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135i 2D Convertible, Standard
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Ignition System
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Engine Electrical System - Repair
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Engine Electrical System - Repair
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Troubleshooting
12 00... Instructions for disconnecting and connecting battery
12 00... Instructions for working on the ignition system
12 00... Notes/information on removing and installing control units
12 00... Notes/information on start assistance (jump starting)
61 00... Notes on handling wiring harnesses and cables
00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
Notes
Observe safety precautions when working on MSA vehicles
MSA function is deactivated by
When working with diagnosis tools
Ignition Wires, Spark Plugs
12 12 011 Replacing all spark plugs (N53, N54, N54T, N63)
Ignition Coil
12 13 Carrying out engine cleaning (N54, N54T, N53, N43)
12 13 511 Replacing ignition coils (N54, N54T, N53, N43)
Electronic Switching
12 14 521 Replacing crankshaft pulse generator (N54, N54T)
12 14 523 Replacing pulse generator on inlet camshaft (N54, N54T)
12 14 524 Replacing pulse generator on exhaust camshaft (N54, N54T)
12 14 550 Replacing control unit (DME)
12 14 600 Removing/replacing knock sensors (N54, N54T, N53)
12 14 650 Replacing suction pressure sensor on intake air manifold (N54, N54T)
12 14 651 Replacing suction pressure sensor on charge-air duct (N54, N54T)
12 14 700 Coding control module (DME/DDE)
12 14 705 Programming control unit (DME/DDE)
Alternator With Drive
12 31... Replacing alternator belt pulley
12 31... Replacing alternator belt pulley (with overrunning clutch)
12 31 009 Checking alternator (BSD)
12 31 020 Removing and installing or replacing alternator (N54, N54T)
Regulator
12 32 501 Replacing voltage regulator
Starter With Mounting
12 41 020 Removing and installing/replacing starter (N54, N54T, N55)
12 41 041 Replacing solenoid switch
Starter Lead
12 42 500 Replacing battery positive lead (between starter, alternator and battery positive terminal)
12 42 540 Replacing safety battery terminal (SBK)
Engine Wiring Loom
12 51 001 Replacing wiring harness section for engine (N54, N54T)
12 51 100 Replacing wiring harness section for ignition coil (N54, N54T)
Oil Pressure, Oil Temperature
12 61 280 Removing and installing/replacing oil pressure sensor (N52, N52K, N51, N54, N54T, N53)
12 61 285 Replacing engine oil level sensor (N52, N52K, N51, N46, N54, N54T, N53)
Control Unit Box
12 90... Removing and installing/replacing electronics box
12 90 100 Replacing fan for electronics box