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Service bulletin A9121982055591_5

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 id10193264
Published by NHTSA2021-06-03
Manufacturer's numberA9121982055591_5
Manufacturer's date2021-05-03
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This bulletin contains a software update for when the MMI screens go blank and the system reboots, it may have stored DTC U10CF00 and/or B13B901.

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, Software

Trouble codes named

B13B9, U10CF

Vehicles listed
AUDI A32017, 2018
AUDI A42017, 2018
AUDI A52018
AUDI A5 CABRIOLET2018
AUDI ALLROAD2017 to 2018
AUDI AUDI
AUDI Q52018
AUDI Q72017, 2018
AUDI RS 52018
AUDI S32017, 2018
AUDI S42017
AUDI S42018
AUDI S52018
AUDI SQ52018

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

Recalls for the same vehicles and component
16V6420002016-09-06. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A0023822047812_72024-01-04. Service bulletin. This bulletin provides information on how to set up and use the SD Creator for obtaining vehicle software updates via the Mirror Server.
Dealer 34L4 Rev22024-01-04. Service bulletin. Transmission Control Module (TCM) Software - Updated parts and claiming information
A9023582072005_22024-01-04. Service bulletin. This bulletin provides information for when the error message "CBR1021E: Can't parse Request. (cpngw)" appears when adapting control units, keys, or immobilizer; DTC B201700.
A2723512058831_72023-04-06. Service bulletin. This bulletin contains a software update for DTC P0CA700 or U046900.
A0123452066257_22023-03-06. Service bulletin. This bulletin provides information on a software update for when the MIL light is on accompanied by one of the following DTCs: P013E00, P013F00, P014A00, or P014B00.
A2722452058831_12022-10-05. Service bulletin. This bulletin contains a software update for DTC P0CA700 or U046900.
A7222442048311_62022-07-01. Service bulletin. This bulletin contains a software update to correct an intermittently inoperative seat belt positioner.
A4622332051095_72022-07-01. Service bulletin. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
A9622772059201_52022-05-05. Service bulletin. This bulletin contains information for when the messages appear in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD.
DC_91CD_Train2022-03-04. Service bulletin. 3G Turndown (91CD) Dealer Training