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Service bulletin A9421462064418_1

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 id10201521
Published by NHTSA2021-10-06
Manufacturer's numberA9421462064418_1
Manufacturer's date2021-09-07
NHTSA componentELECTRICAL SYSTEM; EXTERIOR LIGHTING

NHTSA's summary

This bulletin states to fill out the questionnaire and contact TAC if the vehicle is within NVLW for DTC(s) B16D4F4, B16D5F4, B16D6F4, B16D7F4.

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, Lighting

Trouble codes named

B16D4, B16D5, B16D6, B16D7

Vehicles listed
AUDI A82019, 2020

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

Recalls for the same vehicles and component
23V8420002023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD

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
TSB_2079214_42026-10-05. Service bulletin. This bulletin provides information regarding fault finding and repair information for electric tailgate.
TSB_2074059_42026-10-05. Service bulletin. This bulletin provides general information about SOS Emergency Assist.
TSB_2068573_62026-10-05. Service bulletin. This bulletin provides information when the rear parking sensor sometimes does not work, rear parking sensor loose, rear parking sensor fault message.
TSB_2063336_52026-10-05. Service bulletin. This bulletin provides information when DTC C12BFF0 is stored in the lane change modeul or the radar sensor; intersection assist/lane change assist are inoperable.
TSB_2058077_112026-10-05. Service bulletin. This bulletin provides information when there is an Audi pressense warning, warning jolt, and/or brake engagement.
TSB_2054202_82026-10-05. Service bulletin. This bulletin provides information when there is an Audi adaptive light system malfunction; DTC C12B3FA is stored in the control module for driver assistance systems.
TSB_2082976_22026-09-04. Service bulletin. This bulletin provides general information about the current tpp issues for Audi connect.
TSB_2082976_12026-09-04. Service bulletin. This bulletin provides general information about the current tpp issues for Audi connect.
TSB_2064681_62026-09-04. Service bulletin. This bulletin provides information when there is an issue with wireless charging/wireless charging is not working.
TSB_2073747_42026-08-05. Service bulletin. This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.