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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.

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Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
A461342 2033674-2017-11-17. Service bulletin. SERVICE BRAKES. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal when used with light to moderate force.
A461345 2033674-2017-11-17. Service bulletin. SERVICE BRAKES, HYDRAULIC. Supersedes Technical Service Bulletin Group 46 number 13-42 dated June 11, 2013. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal when used with light to moderate force.
A461346 2033674-2017-11-17. Service bulletin. SERVICE BRAKES, HYDRAULIC. Supersedes Technical Service Bulletin Group 46 number 13-45 dated June 12, 2013. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal when used with light to moderate force.
Fluid Cap Chart2017-11-08. Service bulletin. STEERING; SERVICE BRAKES; POWER TRAIN; ENGINE AND ENGINE COOLING; VISIBILITY:WINDSHIELD; ENGINE. This document contains the fluid capacty chart.
A401442 2035854-2017-11-08. Service bulletin. SERVICE BRAKES, HYDRAULIC. Supersedes Technical Service Bulletin Group 40 number 14-39 dated February 13, 2014. A rattling or knocking noise is heard when the car is driven over bumps or uneven road surfaces. This noise is heard after the car has been driven for a while and is warmed up, and when the temperature outside is warm. This condition can be duplicated if the brakes are applied while the car is being driven over bumpy roads. This condition is a comfort concern. Vehicle handling is not affected. This bulletin applies only to vehicles equipped with 75mm hydro-bushings. This bulletin does not apply to vehicles equipped with 65mm bushings. High ambient temperatures at the hydraulic guide links cause the noise.
A461475 2033674-2017-11-08. Service bulletin. SERVICE BRAKES. Supersedes Technical Service Bulletin Group 46 number 14-70 dated February 25, 2014. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal when used with light to moderate force.
A461466 2022584-2017-11-08. Service bulletin. STEERING; WHEELS; SERVICE BRAKES, HYDRAULIC. Supersedes Technical Service Bulletin Group 46 number 12-23 dated June 18, 2012. Customer may report that the steering wheel vibrates or pulsates when the brakes are applied. Document contains the brake pulsation diagnostic guidelines.
A461362 2033674-2017-10-31. Service bulletin. SERVICE BRAKES. Supersedes Technical Service Bulletin Group 46 number 13-51 dated July 30, 2013. Brakes on vehicles produced before September 3, 2012 (calendar week 36 of 2012), squeak or squeal when used with light to moderate force.
A401337 2035854-2017-10-31. Service bulletin. SERVICE BRAKES, HYDRAULIC; SUSPENSION. The customer reports hearing a rattling or knocking noise when the car is driven over bumps or uneven road surfaces. The noise is noticed after the car has been driven for a while and is warmed-up, and when the temperature outside is warm. The condition can be duplicated if the brakes are applied while the car is driven over bumps. High ambient temperatures at the hydraulic guide links cause the noise.
A461515 2033674-2017-10-27. Service bulletin. SERVICE BRAKES. Supersedes Technical Service Bulletin Group 46 number 14-75 dated March 12, 2014. Customer may complain about brake squeak or squeal with light to moderate pedal pressure.
A4616592033674102017-03-11. Service bulletin. SERVICE BRAKES. THIS BULLETIN PROVIDES TROUBLESHOOTING FOR A FRONT BRAKE SQUEAL SOUND WITH LIGHT TO MODERATE PRESSURE.
SB-2031989/12016-05-23. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
2035854/42016-05-19. Service bulletin. SERVICE BRAKES, HYDRAULIC. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
2035854/32016-05-19. Service bulletin. SERVICE BRAKES, HYDRAULIC. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
TSB-45-13-072014-03-06. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. AUDI: DUE TO DAMAGE ABS WHEEL SPEED SENSOR DURING PRODUCTION, SOME VEHICLES MAY EXPERIENCE STEERING WHEEL NOT LOCKING, IGNITION KEY CANNOT BE REMOVED, AND OTHER VARIOUS ISSUES. MODEL 2009-2014 A4/S4, A5/S5, A5/S5 CAB, Q5. *PE UPDATED 05/21/2014 *JS

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