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Service bulletin A9321532063251_2

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10199218
Published by NHTSA2021-08-04
Manufacturer's numberA9321532063251_2
Manufacturer's date2021-07-12
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE

NHTSA's summary

This bulletin contains instructions for when the vehicle does not start and DTCs P0AA200 and/or P0AA500 are stored.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Equipment and accessories, Labels and manuals, 12-volt battery

Trouble codes named

P0AA2, P0AA5

Vehicles listed
AUDI A72020, 2021, 2022
AUDI Q52020, 2021
AUDI Q5 SPORTBACK2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
A2723622069747_52023-12-06. Service bulletin. This bulletin provides information on document requirements before replacement of the vehicle 12 V battery when it is is drained.
A2723612067906_42023-11-06. Service bulletin. This bulletin provides information for when DTC P0A7D00 is stored.
A2723582070813_12023-08-04. Service bulletin. This bulletin provides information for when there is an electrical or drive system fault, Battery management 2 (48V battery) with DTC P0AA100.
A9023912069055_22023-02-07. Service bulletin. This bulletin provides instructions for when the head up display does not work and/or the 12v battery may be drained.
A1920032059530_12020-06-04. Service bulletin. This bulletin contains instructions for creating a PSS for when DTC P0C4300 and/or P0CE100 is stored in the thermal management control module.
A9720732058976_12020-05-07. Service bulletin. This bulletin contains repair instructions for when the vehicle feels like it is hesitating, low on power, or bucking/jerking while driving.
20AUUSMaint02202020-03-05. Service bulletin. Standard Maintenance Section: Connected Battery Box: ADDED: SQ7, SQ8 Additional Maintenance Items section: Fragrance Cartridges: ADDED: SQ7, SQ8 Rear axle, quattro® Sport - Change ATF and differential oil: ADDED: SQ7, SQ8 Spark plugs - Replace every 30,000 miles: ADDED: SQ7, SQ8 OIL CAPACITY CHART: ADDED: SQ7, SQ8 CHANGED: Castrol Oil to 'Audi High Performance Genuine Engine Oil'
20AUUSMaint01302020-02-08. Service bulletin. Standard Maintenance Items section: ADDED to Connected box battery '(for Audi Connected Services)'