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.
2024 BMW M3 CSFACTORY OEM SERVICE PROCEDURE
Engine Electrical System -- Tightening Torques M3 (G80)
Select a section or procedure below to view factory instructions:
12 12 SPARK PLUGS (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 13 IGNITION COILS (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 14 CAMSHAFT POSITION SENSOR, CRANKSHAFT SENSOR, KNOCK SENSOR (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 31 ALTERNATOR (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 32 ALTERNATOR HOUSING AND BRUSHES (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 41 STARTER MOTOR (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 42 STARTER MOTOR POSITIVE BATTERY CABLE (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 51 FRONT GROUND CABLE (AT CYLINDER HEAD) (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)12 52 PLUG CONNECTIONS, TERMINALS, LOOSE PARTS (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.