Service bulletins for the 2009 Audi A4

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

775 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Power steering are shown. Show all

Bulletins, newest first
A971335 2033412-	2017-11-17. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING. Steering wheel lock does not work. Various warning lights are on. Steering feels stiffer than usual. The engine cannot be switched off. The ignition key cannot be removed. DTC with description "Brake control unit, no signal/communication" is present in several control units. DTC entry in ABS Control unit, J104 (03). One or more may be present. This condition does not result in any drivability concerns. The steering system is fully connected. This condition does not result in any drivability concerns. The steering system is fully connected. The insulation for the ABS wheel speed sensor is damaged in production. Over time, this can lead to corrosion on the wires and restricted functions with the ABS control module. Only the wires in the left bulkhead grommet are affected.
A281322 2028419-	2017-10-31. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING:COLUMN. Supersedes Technical Service Bulletin Group 96 number 12-28 dated January 27, 2012. DTC is present in the access start authorization control unit, J393 (address word 05), and cannot be cleared. The original electronic steering column lock control unit, J764, is installed. The original control unit has never been replaced. A replacement electronic steering column lock control unit, J764, has been installed. Before a replacement electronic steering column lock control unit, J764, is installed, the software of the access start authorization control unit, J393, must be updated due to a diagnostic software error that prevents the DTC from being cleared.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.