2009 Audi A4 CAGA/CAEB (8K)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing chain tensioner wear (early 2.0TFSI engines)
• DPF clogging on diesel variants
• Water pump failure

First checks

• Timing chain condition
• Turbocharger operation (if applicable)
• Inspect diesel particulate filter status

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

• Engine and feature availability varies by market; US models mostly 2.0 TFSI petrol and certain 2.0 TDI versions.
• Oil capacity and filter type depends on specific engine variant; consult owner's manual for exact service data.