2009 AUDI S4 ENA/EJB (B8)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Supercharger pulley wear
• Carbon buildup on intake valves (direct injection)
• Timing chain tensioner issues

First checks

• Supercharger operation and pulley condition
• Oil leaks around valve covers and oil pan
• DSG transmission smooth shifting and fluid level if applicable

Avant de remplacer des pièces

• 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 2009 Audi S4 B8 replaced the V8 of the previous generation with a supercharged V6 for improved fuel efficiency and weight reduction.
• Manual transmissions were limited to Europe; North America and some other markets used Tiptronic of S tronic automatics only.