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 MANUALSBMW2021X6 SDRIVE40IREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERENGINE ELECTRICAL SYSTEM -- REPAIR (G06)
2021 BMW X6 sDrive40i
Engine Electrical System -- Repair (G06)
2021 BMW X6 sDrive40iSECTION Engine Electrical System -- Repair (G06)
- 12 00 General Information
- 12 12 Spark Plugs
- 12 13 Ignition Coils
- 12 14 Crankshaft Sensor, Camshaft Sensor, Knock Sensors, Engine Control Module
- 12 14 521 Replacing the crankshaft sensor (after vehicle diagnosis) (X6 sDrive40i, X6 xDrive40i)
- 12 14 523 Replace intake camshaft sensor (after vehicle diagnosis) (X6 sDrive40i, X6 xDrive40i)
- 12 14 524 Replace exhaust camshaft sensor (after vehicle diagnosis) (X6 sDrive40i, X6 xDrive40i)
- 12 14 550 Replacing Digital Motor Electronics control unit (after vehicle diagnosis) (X6 sDrive40i, X6 xDrive40i)
- 12 146 02 Replacing knock sensor (following vehicle diagnosis) (cylinders 1+3) (X6 sDrive40i and X6 xDrive40i, 2020)
- 12 146 02 Replacing knock sensor (following vehicle diagnosis) (cylinders 1+3) (X6 sDrive40i 2021, X6 xDrive40i 2021-)
- 12 14 604 Replacing knock sensor (following vehicle diagnosis) (cylinders 4+6) (X6 sDrive40i and X6 xDrive40i, 2020)
- 12 14 604 Replacing knock sensor (following vehicle diagnosis) (cylinders 4+6) (X6 sDrive40i 2021, X6 xDrive40i 2021-)
- 12 14 700 Coding the engine control module (DME)
- 12 14 705 Programming the engine control module (DME)
- 12 14 512 Replacing the camshaft position sensor of the exhaust camshaft, left (after vehicle diagnosis) (X6 M50i)
- 12 14 513 Replacing camshaft position sensor of exhaust camshaft at right (X6 M50i)
- 12 14 521 Replacing the crankshaft sensor (after vehicle diagnosis) (X6 M50i)
- 12 14 522 Replacing the camshaft position sensor of the intake camshaft, left (after vehicle diagnosis) (X6 M50i)
- 12 14 526 Replacing camshaft position sensor of intake camshaft, right (after vehicle diagnosis) (X6 M50i)
- 12 14 555 Replacing the engine control module (DME), cylinder 1-4 (after vehicle diagnosis) (X6 M50i)
- 12 14 556 Replacing the engine control module (DME), cylinder 5-8 (after vehicle diagnosis) (X6 M50i)
- 12 14 610 Replacing knock sensor(s) right (after vehicle diagnosis) (X6 M50i)
- 12 14 611 Replace the left knock sensor(s) (X6 M50i)
- 12 31 Alternator
- 12 31 020 Removing and installing/replacing alternator (X6 sDrive40i and X6 xDrive40i, 2020)
- 12 31 022 Removing and installing starter motor generator (X6 sDrive40i 2021, X6 xDrive40i 2021-)
- 12 31 020 Removing and installing/replacing alternator (X6 M50i)
- 12 32 501 Replacing the voltage regulator for the alternator (after vehicle diagnosis) (X6 M50i)
- 12 41 Starter Motor
- 12 42 Starter Motor Positive Battery Cable
- 12 42 540 Replacing the safety battery terminal (SBK)
- 12 42 651 Removing and installing/replacing the positive battery cable remote positive terminal alternator (after vehicle diagnosis) (X6 sDrive40i and X6 xDrive40i, 2020)
- 12 42 652 Removing and installing/replacing the positive battery cable remote positive terminal starter (after vehicle diagnosis) (X6 sDrive40i 2021, X6 xDrive40i 2021-)
- 12 42 500 Removing and installing/replacing the positive battery cable (X6 M50i)
- 12 51 Engine Wiring Harness
- 12 51 210 Replacing the wiring harness section for injectors and ignition coils (X6 sDrive40i, X6 xDrive40i)
- 12 51 235 Remove and install/replace Module 1, sensor system engine wiring (X6 xDrive40i 2020)
- 12 51 235 Remove and install/replace Module 1, sensor system engine wiring (X6 xDrive40i 2021-)
- 12 51 240 Remove and install/replace Module 2, sensor system engine wiring (X6 sDrive40i and X6 xDrive40i, 2020)
- 12 51 240 Remove and install/replace Module 2, sensor system engine wiring (X6 sDrive40i 2021, X6 xDrive40i 2021-)
- 12 51 245 Remove and install/replace transmission module engine wiring (X6 xDrive40i 2020)
- 12 51 245 Remove and install/replace transmission module engine wiring (X6 xDrive40i 2021-)
- 12 51 235 Remove and install/replace Module 1, sensor system engine wiring (X6 sDrive40i 2020)
- 12 51 235 Remove and install/replace Module 1, sensor system engine wiring (X6 sDrive40i 2021)
- 12 51 245 Remove and install/replace transmission module engine wiring (X6 sDrive40i 2020)
- 12 51 245 Remove and install/replace transmission module engine wiring (X6 sDrive40i 2021)
- 12 51 250 Remove and install/replace blow-off valve wiring harness, cylinders 1-4 (X6 M50i)
- 12 51 251 Remove and install/replace blow-off valve wiring harness, cylinders 5-8 (X6 M50i)
- 12 51 302 Remove and install/replace wiring harness section, sensor system module cylinder 1-4 (X6 M50i)
- 12 51 321 Removing and installing/replacing the adapter between the wiring harness section and the oil level sensor (X6 M50i)
- 12 51 322 Removing and installing/replacing the engine control module wiring harness section (X6 M50i)
- 12 51 323 Removing and installing/replacing the adapter between the wiring harness section and the oil temperature sensor (X6 M50i)
- 12 52 032 Removing and install right control unit bracket (X6 M50i)
- 12 52 033 Removing and installing/replacing the left control unit bracket (X6 M50i)
- 12 61 Oil Pressure Switch, Oil Level Sensor
- 12 63 Power Distribution Box
- 12 90 ECM Housing
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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.