Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2009650I 2D COUPE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMENGINE ELECTRICAL SYSTEM - REPAIR (N62)
2009 BMW 650i 2D Coupe, Automatic
Engine Electrical System - Repair (N62)
2009 BMW 650i 2D Coupe, AutomaticSECTION Engine Electrical System - Repair (N62)
- 00 Troubleshooting
- 12 00 Contents of Engine Electrical System General
- 12 00 ... Instructions For Disconnecting And Connecting Battery
- 12 00 ... Instructions For Removing And Installing Electronic Control Units
- 12 13 Notes On Checking Ignition System
- 12 Removing And Installing Engine Compartment Suppression Lines (Grounding Cables) (N62/TU)
- 12 Ignition Wires, Spark Plugs
- 13 Ignition Coil
- 12 13 Notes On Checking Ignition System
- 12 13 ... Additional Fault Notes For Troubleshooting
- 12 13 ... Checking Secondary Signal For Stationary Ignition Distribution
- 12 13 ... Further Fault Patterns With Evaluation
- 12 13 009 Checking Rod-Type Ignition Coils (M54, M56, N40, N42, N43, N45, N46, N52, N62, N62TU, N73)
- 12 13 511 Replacing Ignition Coil (N62TU)
- 14 Electronic Switching Or Control Unit
- 11 37 700 Replacing Control Unit (Valvetronic)
- 12 14 512 Replacing Pulse Generator On Left Exhaust Camshaft (N62, N62TU)
- 12 14 513 Replacing Pulse Generator On Right Exhaust Camshaft (N62, N62TU)
- 12 14 521 Replacing Crankshaft Pulse Generator (N62, N62TU)
- 12 14 522 Replacing Pulse Generator On Left Inlet Camshaft (N62, N62TU)
- 12 14 526 Replacing Pulse Generator On Right Inlet Camshaft (N62, N62TU)
- 12 14 550 Replacing Control Unit (DME) (N62, N62TU)
- 12 14 610 Replacing Right Knock Sensors (N62, N62TU)
- 12 14 611 Replacing Left Knock Sensors (N62, N62TU)
- 12 14 700 Coding Control Module (DME / DDE)
- 12 14 705 Programming Control Unit (DME / DDE)
- 31 Alternator With Drive And Mount
- 32 Regulator
- 41 Starter With Mounting
- 42 Starter Lead
- 51 Engine Wiring Loom
- 61 Oil Pressure/Oil Temperature Gauge
- 90 Control Unit Box
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.