2012 BMW 7 Series 740i N52B30O0/N55B30O0 (F01)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• High-pressure fuel pump failures on N55 engines
• Electric water pump failure
• Valve cover gasket leaks

First checks

• Check for oil leaks especially around valve cover gasket
• Inspect cooling system and electric water pump operation
• Examine turbocharger operation on N55 engines

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

• N52 engine was phased out during 2012 model year in some markets, replaced by N55 turbocharged engine
• Exact engine variant depends on market due to emissions and tax regulations
• Oil capacity includes change of oil filter