2011 BMW 335is N54B30TU (E90/E92)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• High-pressure fuel pump failures
• Wastegate rattle
• Carbon buildup on intake valves

First checks

• Inspect turbocharger wastegate rod and actuator
• Check high-pressure fuel pump noise
• Carbon cleaning on intake valves

Vor dem Teiletausch

• 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

• 335is was a limited-run, performance enhanced version of the 335i produced primarily for North America in 2011.
• Globally, the 335is was not widely marketed; availability outside North America was limited or via grey import.
• Compared to the standard 335i, the 335is included upgraded cooling, revised turbocharging, upgraded suspension, and sportier tuning.