2009 Audi A4 Quattro Service and Repair Manual

This manual for the 2009 Audi A4 Quattro is built around the exact year, engine and trim combination on your title, so the torque values, wiring diagrams and diagnostic steps inside are the ones Audi actually published for this car, covering both the 2.0L turbo four (engine codes CAEB and CALA) and the 3.2L V6 (BWT and BKH).

Engines covered

• 3.2L V6 — DOHC, naturally aspirated, gasoline
• 2.0L inline-four (121 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 2-door convertible
• 4-door sedan
• 4-door wagon

Trims covered

• Base
• Avant
• Cabriolet
• Elite

Known issues on the 2009 A4 Quattro. Two recalls are on federal record for this model year. The first covers the front passenger airbag inflator module: the inflator can rupture, sending metal fragments into the vehicle and risking serious injury or death to occupants. The second covers the airbag control unit, which can corrode and fail, so the airbags may not deploy in a crash. Owners have filed 142 complaints for the year. The factory diagnostic and repair procedures behind both airbag systems are here.

Whether you're tracing an airbag control unit fault, servicing the turbo four or the V6, or working through a Quattro driveline job, it keeps you on the OEM procedure and the correct specification for your specific 2009 A4 Quattro.