2004 AUDI allroad AWM/ASB (4Z)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Air suspension faults
• Turbocharger leaks on diesel engines
• Electrical gremlins in early 2000s models

First checks

• Inspect air suspension system
• Check for oil leaks on turbo diesel
• Verify condition of timing chain tensioners

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

• The 2004 model year was the final for the C5 generation allroad before the facelift in 2005.
• Engine availability and specifications vary notably between Europe and North America markets.