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.
2021 BMW M2 Automatic DCT TransFACTORY OEM SERVICE PROCEDURE
Engine Electrical System - Repair (F87)
- 12 00 General Information
- 12 12 Spark Plugs
- 12 13 Ignition Coils
- 12 14 Engine Control Module And Sensors
- Replacing crankshaft pulse sensor (N55T0 Engine) (2016-2018)
- Replacing pulse sensor on intake camshaft (N55T0 Engine) (2016-2018)
- Replacing pulse sensor on exhaust camshaft (N55T0 Engine) (2016-2018)
- Replacing control unit (DME) (N55T0 Engine) (2016-2018)
- Removing/replacing knock sensors (N55T0 Engine) (2016-2018)
- Replacing pressure sensor on intake plenum (N55T0 Engine) (2016-2018)
- Replacing pressure sensor on charge air duct (N55T0 Engine) (2016-2018)
- Coding the control unit (DME/DDE) (2016-2022)
- Programming the control unit (DME/DDE) (2016-2022)
- Replacing crankshaft pulse sensor (S55 Engine) (2019-2022)
- Replacing pulse sensor on intake camshaft (S55 Engine) (2019-2022)
- Replacing pulse sensor on exhaust camshaft (S55 Engine) (2019-2022)
- Replacing control unit (DME) (S55 Engine) (2019-2022)
- Removing/replacing knock sensors (S55 Engine) (2019-2022)
- Replace pressure sensor on charge air cooler (S55 Engine) (2019-2022)
- Replacing pressure sensor on intake plenum (S55 Engine) (2019-2022)
- 12 31 Alternator
- 12 41 Starter Motor
- 12 42 Starter Cables
- Replacing positive battery cable between starter motor, alternator and positive battery connection point (N55T0 Engine) (2016-2018)
- Replacing the safety battery terminal (SBK) (2016-2022)
- Replacing positive battery cable between starter motor, alternator and positive battery connection point (S55 Engine) (2019-2022)
- 12 51 Engine Wiring Harness
- Replacing wiring harness section for engine (N55T0 Engine) (2016-2018)
- Replacing wiring harness section for ignition and injectors (N55T0 Engine) (2016-2018)
- Removing and installing/replacing wiring harness section for engine sensor system module 1 (S55 Engine) (2019-2022)
- Removing and installing/replacing wiring harness section for the transmission module (S55 Engine) (2019-2022)
- Replacing wiring loom section for ignition and injectors (S55 Engine) (2019-2022)
- Replacing wiring harness section for Valvetronic servomotor (S55 Engine) (2019-2022)
- Removing and installing/replacing wiring harness section for engine sensor system module 2 (S55 Engine) (2019-2022)
- 12 61 Oil Pressure Switch, Oil Level Sensor
- Removing and installing/replacing oil pressure sensor (N55T0 Engine) (2016-2018)
- Removing and installing/replacing oil level sensor for engine oil (N55T0 Engine) (2016-2018)
- Removing and installing/replacing oil pressure switch (S55 Engine) (2019-2022)
- Removing and installing/replacing oil level sensor for engine oil (S55 Engine) (2019-2022)
Factory Service Tools
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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.
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