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 MANUALSBMW2023M5REPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMENGINE ELECTRICAL SYSTEM -- REPAIR M5 (F90)
2023 BMW M5
Engine Electrical System -- Repair M5 (F90)
2023 BMW M5SECTION Engine Electrical System -- Repair M5 (F90)
- 12 00 Engine Electrical System
- 12 12 Ignition Wire, Spark Plugs
- 12 13 Ignition Coil
- 12 13 506 Replacing an ignition coil (following vehicle diagnosis) (right) (M5 2018-2020)
- 12 13 506 Replacing an ignition coil (following vehicle diagnosis) (right) (M5 2021-2022)
- 12 13 507 Replacing an ignition coil (after vehicle diagnosis) (left) (M5 2018-2020)
- 12 13 507 Replacing an ignition coil (after vehicle diagnosis) (left) (M5 2021-2022)
- 12 13 512 Replacing more than one ignition coil (after vehicle diagnosis) (M5 2018-2020)
- 12 13 512 Replacing more than one ignition coil (after vehicle diagnosis) (M5 2021-2022)
- 12 14 Electronic Switching Or Control Units
- 12 14 512 Replacing the camshaft position sensor of the exhaust camshaft, left (after vehicle diagnosis) (M5 2018-2020)
- 12 14 512 Replacing the camshaft position sensor of the exhaust camshaft, left (after vehicle diagnosis) (M5 2021-2022)
- 12 14 513 Replacing camshaft position sensor of exhaust camshaft at right (after vehicle diagnosis) (M5 2018-2022)
- 12 14 521 Replacing the crankshaft sensor (after vehicle diagnosis) (M5 2018-2022)
- 12 14 522 Replacing the camshaft position sensor of the intake camshaft, left (after vehicle diagnosis) (M5 2018-2022)
- 12 14 526 Replacing camshaft position sensor of intake camshaft, right (after vehicle diagnosis) (M5 2018-2022)
- 12 14 551 Removing and installing Digital Motor Electronics control unit (Cylinders 1-4) (M5 2018-2022)
- 12 14 553 Removing and installing Digital Motor Electronics control unit (Cylinders 5-8) (M5 2018-2022)
- 12 14 555 Replacing the Digital Motor Electronics control unit, cylinder 1-4 (after vehicle diagnosis) (M5 2018-2022)
- 12 14 556 Replacing the Digital Motor Electronics control unit, cylinder 5-8 (after vehicle diagnosis) (M5 2018-2022)
- 12 14 557 Replacing both Digital Motor Electronics control units (after vehicle diagnosis) (M5 2018-2022)
- 12 14 610 Replacing knock sensor(s) right (after vehicle diagnosis) (M5 2018-2022)
- 12 14 611 Replace the left knock sensor(s) (after vehicle diagnosis) (M5 2018-2022)
- 12 14 700 Coding the control unit (DME/DDE) (M5 2018-2022)
- Programming the control unit (DME/DDE) (M5 2018-2022)
- 12 31 Alternator With Drive And Attachment
- 12 32 Controller
- 12 41 Starter With Attachment
- 12 42 Starter Line
- 12 51 Engine Wiring Harness
- 12 51 245 Remove and install/replace transmission module engine wiring (M5 2018-2022)
- 12 51 300 Remove and install/replace engine wiring harness section, ignition module cylinder 1-4 (M5 2018-2020)
- 12 51 300 Remove and install/replace engine wiring harness section, ignition module cylinder 1-4 (M5 2021-2022)
- 12 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8 (M5 2018-2020)
- 12 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8 (M5 2021-2022)
- 12 51 302 Remove and install/replace wiring harness section, sensor system module cylinder 1-4 (M5 2018-2022)
- 12 51 303 Remove and install/replace wiring harness section, sensor system module cylinder 5-8 (M5 2018-2022)
- 12 51 321 Removing and installing/replacing wiring harness section, adapter, oil-level sensor (M5 2018-2022)
- 12 51 322 Removing and installing/replacing the engine DME/PDM wiring harness section (M5 2018-2022)
- 12 51 323 Remove and install/replace wiring harness section for oil temperature sensor adapter (M5 2018-2022)
- 12 52 Plug Connections, Terminals, Loose Parts
- 12 61 Oil Pressure, Oil Temp, Oil Level Check
- 12 63 Switch And Relay
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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.