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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

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
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
A2021352043357_12021-08-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM:SOFTWARE. This technical service bulletin provides a software code for correcting an issue that causes DTC P046100.
AWA 21-032021-07-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:MECHANICAL. This Document informs dealers on the new electromechanical steering unit warranty extension for 2012-2015 Model Year Audi B8 (A4, Q5 & SQ5) and C7 (A6) Vehicles
A1921182061604_42021-06-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin contains instructions for resolving a coolant leak.
A9121042024323_82021-06-03. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
ELSAallignAudi2021-05-06. Service bulletin. ELECTRICAL SYSTEM. Elsa2Go campaign information is now 100% aligned with ElsaPro. This update to Elsa2Go ensures that both systems are displaying the same campaign information, including OPEN/CLOSED status, repair date as well as criterions at the same time without any discrepancy.
A9021982059335_22021-05-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This bulletin contains information on noises from the instrument cluster installation area.
A5721752022032_92021-05-06. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This technical service bulletin provides troubleshooting information for the vehicle locking system.
A9120572036575_62021-01-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides an explanation for the customer regarding known software issues with the MIB & MMI3G+ bluetooth security profile.
A9120242026611_72020-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains a guide for troubleshooting HD radio issues.
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.
A0020382039206_32020-07-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin contains instructions on how to use the QR code in a TSB.
A9020452059335_12020-05-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information on noises from the instrument cluster installation area.
A9020442032113_32020-05-07. Service bulletin. ELECTRICAL SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A9420202017806132020-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information regarding when the message 'Vehicle lights: malfunction' appears with DTC 03280, 01800, or B126AF0.

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