2006 BMW 330xi M54B30 (E46)
E46 / Sedan, Wagon / North America, Europe, select global markets
M54B30Fiche exacte année/versionGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Rear subframe mounts wear causing alignment issues
- Cooling system components prone to failure (water pump, thermostat)
- VANOS solenoid valve faults
First checks
- Check for oil leaks around valve cover gasket
- Inspect condition of rear subframe mounts
- Confirm correct functioning of VANOS system
Avant de remplacer des pièces
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- 330xi designation applies mainly to North America and some global markets with xDrive all-wheel drive
- Europe had 330i (rear-wheel drive) and 330xi or 330xd for AWD variants
- Engine code M54B30 is consistent for 3.0L inline-6 in 2006
- Market variations exist in transmission offerings and emissions equipment