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 M4 Base, Automatic TransFACTORY OEM SERVICE PROCEDURE
Variable Valve Lift Control System -- Repair M4 (G82 & G83)
- 11 37 Variable Valve Lift Control System (VALVETRONIC)
- 11 37 005 Removing and installing/replacing eccentric shaft (M4 RWD models)
- 11 37 010 Removing and installing/replacing intermediate levers (M4 RWD models)
- 11 37 020 Removing and installing/replacing servomotor for eccentric shaft (M4 2021-2023)
- 11 37 005 Removing and installing/replacing eccentric shaft (M4 AWD models)
- 11 37 010 Removing and installing/replacing intermediate levers (M4 AWD models)
Factory Service Tools
Use the Manual With the Right Hardware
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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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