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Service bulletins for the 2013 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
A1722172060750_32022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A4622282051095_52022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
A9122752024323_92022-03-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A4622262022584112022-02-04. Service bulletin. SERVICE BRAKES. This informational bulletin provides diagnostic information for brake conditions.
A4422872022563202022-02-04. Service bulletin. WHEELS. This bulletin provides information regarding vibrations or movement that are felt in the wheel.
A1922282025303132022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A1922272025303122022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A4622272034181192022-02-04. Service bulletin. EQUIPMENT; SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY. This technical service bulletin provides troubleshooting for brake noise.
A4421862056386_72022-01-05. Service bulletin. STEERING; SUSPENSION. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
A4021312024318_12022-01-05. Service bulletin. WHEELS. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
A4021302023187_62022-01-05. Service bulletin. STEERING. This information bulletin provides an explanation for squeaking noises heard when the steering wheel is turned or maneuvered.
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
Technical Servic2021-12-27. Service bulletin. ELECTRICAL SYSTEM:IGNITION:COIL. Update Bulletin
Audi Newsletter2021-12-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Elso pro reminder.
Audi Newsletter2021-12-13. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES. Wind noise from Exterior Mirror.
Audi Newsletter2021-12-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. ODIS Quick Reference Guide was sent to all dealer technicians (non-corporate
Audi Newsletter2021-12-13. Service bulletin. EQUIPMENT. Several weeks ago, the ODIS Quick Reference Guide was sent to all dealer technicians (non-corporate
Upcoming Update2021-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. Upcoming Update 28G6.
9113142013790 82021-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. The navigation DVD or other CD/DVD cannot be ejected.
9013422035902 12021-12-13. Service bulletin. ENGINE AND ENGINE COOLING. 90 "Ignition lock faulty" message in cluster information display.
7413162035814 12021-12-13. Service bulletin. SEATS; EQUIPMENT. 74 Front center armrest is stuck, does not slide, or is inoperative.
7013352022773 52021-12-13. Service bulletin. STRUCTURE:BODY:DOOR. Components on the doors or the parcel shelf vibrate while heavy bass audio is played.
5513332035797 12021-12-13. Service bulletin. EQUIPMENT. The customer complains of hearing a creaking or knocking noise.
4613622033674 52021-12-13. Service bulletin. SERVICE BRAKES. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal
4413442022563 82021-12-13. Service bulletin. SUSPENSION; TIRES; WHEELS; STEERING. Customer feels vibration in the seat, vehicle floor, footwell, pedals, or steering wheel.

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