2005 AUDI A8 BFM/BMW (4E)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Air suspension issues
• Timing chain tensioner wear on some V8 engines
• Oil leaks around camshaft seals

First checks

• Inspect air suspension compressor and struts
• Check for engine oil leaks and timing chain noise
• Verify electrical system fuses and adaptive modules

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

• Market-dependent engine fitment and transmission configurations exist.
• Diesel variants also available globally but with different engine codes and not comprehensively covered here.
• Engine oil capacity varies slightly with engine type, estimates provided are for main petrol engines.