1996 Audi A6 ABK/ACK (C4)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Coolant leaks from radiator and water pump
• Electrical issues in instrument cluster
• Timing chain tensioner wear leading to rattle

First checks

• Inspect timing chain tensioner
• Check for coolant system leaks
• Verify integrity of ignition coils and spark plugs

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

• 1996 model year is part of last updates to Audi C4 A6 before 1997 facelift and introduction of C5 generation.
• Exact specifications vary by market, especially between European and North American versions.
• Diesel engines marked with 'AAT' and 'AFB' codes were predominant in Europe for low-end torque and economy.