2007 BMW 328xi N52B30 (E90)
E90 / Sedan / Wagon (Touring in select markets) / North America, Europe, selected global markets
N52B30Exact year/trim recordGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Oil leaks from valve cover gasket
- Electric water pump failure
- DISA valve wear
First checks
- Check VANOS system for rattling noise
- Inspect cooling system hose clamps
- Verify proper oil level and quality
Before replacing parts
- 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
- The 328xi was a full-time all-wheel-drive version of the 3 series sedan and wagon for 2007.
- Market-specific variations exist in transmission choice and emissions equipment.