# Service bulletin A9421322055123\_4

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.

- Type: Service bulletin
- NHTSA id: 10185686
- Published by NHTSA: 2021\-02\-04
- Manufacturer's number: A9421322055123\_4
- Manufacturer's date: 2021\-01\-07
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

This bulletin contains repair instructions for a warning message regarding the rear lighting. There are several possible DTCs that could be stored.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10185686-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10185686-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Lighting

## Vehicles listed

- 2019 to 2020 AUDI A6
- 2019 to 2020 AUDI A7
- 2019 to 2020 AUDI A8
- 2018 to 2020 AUDI Q5
- 2020 AUDI S6
- 2020 AUDI S7
- 2019 AUDI S8
- 2020 AUDI S8
- 2018 to 2020 AUDI SQ5

## Other bulletins for the same vehicles and component

- [A9424792063739\_2](/bulletins/10254078.md), 2024-05-07, Service bulletin: EXTERIOR LIGHTING. This bulletin provides information when the headlights do not turn off during daylight hours.
- [A9424782070694\_2](/bulletins/10254077.md), 2024-05-07, Service bulletin: EXTERIOR LIGHTING. This bulletin provides information when there is a functional issue with the lights in the rear lid; B146C29.
- [A942473201274917](/bulletins/10251666.md), 2024-04-05, Service bulletin: EXTERIOR LIGHTING; UNKNOWN OR OTHER. This bulletin provides information when the exterior lights have moisture accumulation.
- [A9424722073282\_1](/bulletins/10251657.md), 2024-04-04, Service bulletin: UNKNOWN OR OTHER; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information on visual concerns with the headlight lens.
- [A9423672071954\_1](/bulletins/10244595.md), 2023-11-06, Service bulletin: EXTERIOR LIGHTING:TAIL LIGHTS; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information pertaining to when there are foreign objects inside of a headlight or taillight.
- [A9423652061922\_3](/bulletins/10238194.md), 2023-07-10, Service bulletin: EXTERIOR LIGHTING. This bulletin provides detailed information on the proper documentation of optical concerns for headlights and taillights.
- [A0023692031473\_4](/bulletins/10236599.md), 2023-06-06, Service bulletin: STRUCTURE; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information for when car wash bristles become stuck in the body gap between the headlight and fender.
- [A9423632061922\_2](/bulletins/10236378.md), 2023-06-06, Service bulletin: EXTERIOR LIGHTING. This bulletin provides details on how to properly document optical concerns in headlights and taillights for warranty submissions.
- [A942364201274916](/bulletins/10236373.md), 2023-06-06, Service bulletin: EXTERIOR LIGHTING. This bulletin provides information for when there is moisture accumulation in the exterior lights.
- [A6622902067733\_1](/bulletins/10217633.md), 2022-09-01, Service bulletin: EXTERIOR LIGHTING:TAIL LIGHTS; EQUIPMENT. This bulletin provides direction for instances where the center section of the tail lamp trim molding is pulling away from the bonding strip.

JSON: [/v1/bulletins/10185686](/v1/bulletins/10185686)

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