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Service bulletins for the 2008 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.

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

By type

By component

By trouble code

Bulletins, newest first
A9121862062713_12021-04-06. Service bulletin. EQUIPMENT. This bulletin contains repair instructions for when there is radio static when the rear heater is active.
A9421362023322_32021-04-06. Service bulletin. EXTERIOR LIGHTING. This informational bulletin contains information on the different shading of LED headlights.
A1921142061604_22021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for resolving a coolant leak.
A4621252054385_22021-03-04. Service bulletin. EQUIPMENT; SERVICE BRAKES. This informational contains an explanation for when the customer hears creaking noises when braking at almost standstill (crawling when pulling away or briefly before standstill).
A4621232022584102021-03-04. Service bulletin. SERVICE BRAKES. This informational bulletin provides diagnostic information for brake conditions.
A1721122060750_22021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A9121642024323_72021-02-04. Service bulletin. PARKING BRAKE:ELECTRICAL:CONTROL MODULE. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A1920102061604_12021-01-08. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for resolving a coolant leak.
SM C-20202021-01-08. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the part numbers listed (State of California only).
A0020362002047_12020-12-21. Service bulletin. EQUIPMENT:ELECTRICAL. This information bulletin contains instructions for technicans on how to ensure their TAC call goes smoothly.
A1720112060750_12020-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; EQUIPMENT. This bulletin contains instructions for using the UV additive to find engine oil leaks.
21AUTIRECHAINS2020-10-06. Service bulletin. TIRES; EQUIPMENT; WHEELS. Added new graphic to reflect where to find MY 21 information
A9020652032113_42020-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This information bulletin contains a background on the outside air temperature reading.
Audi Part Labels2020-09-03. Service bulletin. EQUIPMENT. Recall Reminder Part Labels
TRMMIDOS_Audi2020-09-03. Service bulletin. AIR BAGS. In conjunction with the Michigan Department of State, Audi will be sending Takata airbag recall reminder notices to approximately 3,000 Audi owners in the State of Michigan on August 10, 2020.
TRMTX_Audi2020-08-06. Service bulletin. AIR BAGS. In conjunction with the County of Fort Bend, Audi will be sending Takata airbag recalll reminder notices to approximately 370 Audi owners in the State of Texas on July 28, 2020.
A1720062028440_52020-08-06. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT. This informational bulletin explains when the range display is empty in the on-board computer.
TRMTN_Audi2020-08-06. Service bulletin. AIR BAGS. In conjunction with the Tennessee DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,300 Audi owners in the State of Tennessee on July 7, 2020.
TRMMRFL_Audi2020-07-07. Service bulletin. AIR BAGS. In conjunction with the City of Miramar, Audi sent Takata airbag recall reminder notices to approximately 89 Audi owners in the State of Florida on June 26, 2020.
TRMLPCA_Audi2020-07-07. Service bulletin. AIR BAGS; EQUIPMENT. In conjunction with the City of La Puente, Audi will be sending Takata airbag recall reminder notices to approximately 45 Audi owners in the State of California on June 22, 2020.
A1920042025303_12020-07-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for identifying and mixing factory fill coolants.
A0020382039206_32020-07-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin contains instructions on how to use the QR code in a TSB.
A9120702044694_22020-06-04. Service bulletin. EQUIPMENT. This technical service bulletin provides troubleshooting for issues with the navigation map database.
A4020052024318_92020-06-04. Service bulletin. EQUIPMENT; WHEELS. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
TK Services_Audi2020-05-07. Service bulletin. EQUIPMENT. Effective immediately, TK Services Inc. will resume scheduling part pick-up from dealerships and service centers.

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