# Service bulletin A9421392063739\_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. - Type: Service bulletin - NHTSA id: 10198234 - Published by NHTSA: 2021\-07\-02 - Manufacturer's number: A9421392063739\_1 - Manufacturer's date: 2021\-06\-23 - NHTSA component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EXTERIOR LIGHTING:HEADLIGHTS:DAYTIME RUNNING LIGHTS:BULBS ## NHTSA's summary This information bulletin explains how the daylights turn on and off. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198234-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198234-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Equipment and accessories, Labels and manuals, Lighting, Headlights ## Vehicles listed - 2018 to 2020 AUDI A3 - 2022 AUDI A3 - 2019 to 2020 AUDI A3 ETRON - 2018 AUDI A3 SPORTBACK E\-TRON - 2018 to 2022 AUDI A4 - 2018 to 2022 AUDI A5 - 2018 to 2021 AUDI A5 CABRIOLET - 2018 to 2022 AUDI A6 - 2020 to 2021 AUDI A6 ALLROAD - 2018 to 2022 AUDI A7 - 2021 to 2022 AUDI A7 E - 2018 to 2020 AUDI A8 - 2021 to 2022 AUDI A8 - 2021 AUDI A8 L E - 2018 to 2021 AUDI ALLROAD - AUDI AUDI - 2019 AUDI E\-TRON - 2020 AUDI E\-TRON - 2021 to 2022 AUDI E\-TRON - 2018 to 2022 AUDI Q3 - 2018 to 2021 AUDI Q5 - 2020 to 2022 AUDI Q5 PHEV - 2022 AUDI Q5 SPORTBACK - 2018 to 2022 AUDI Q7 - 2019 to 2022 AUDI Q8 - 2018 AUDI R8 - 2020 AUDI R8 - 2018 to 2020 AUDI RS 3 - 2022 AUDI RS 3 - 2018 to 2019 AUDI RS 5 - 2021 to 2022 AUDI RS 5 - 2021 to 2022 AUDI RS 6 AVANT - 2018 AUDI RS 7 - 2021 to 2022 AUDI RS 7 - 2020 to 2022 AUDI RS Q8 - 2021 AUDI RS3 - 2018 AUDI RS6 - 2020 AUDI RS6 - 2018 to 2020 AUDI S3 - 2021 AUDI S3 - 2022 AUDI S3 - 2018 to 2022 AUDI S4 - 2018 to 2022 AUDI S5 - 2018 to 2021 AUDI S5 CABRIOLET - 2018 AUDI S6 - 2019 AUDI S6 - 2020 to 2022 AUDI S6 - 2018 AUDI S7 - 2020 to 2022 AUDI S7 - 2020 to 2022 AUDI S8 - 2018 to 2022 AUDI SQ5 - 2020 to 2022 AUDI SQ7 - 2020 to 2022 AUDI SQ8 - 2018 to 2022 AUDI TT - 2018 to 2022 AUDI TT RS - 2018 to 2022 AUDI TTS ## Other bulletins for the same vehicles and component - [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. - [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. - [A9423622067655\_2](/bulletins/10232047.md), 2023-03-06, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides instructions or when a headlamp warning is displayed in the instrument cluster, one of the low beam lamps may be inoperative, and DTC C119811 is stored. - [A9622772059201\_5](/bulletins/10210532.md), 2022-05-05, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH; ELECTRICAL SYSTEM:SOFTWARE. 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. - [A9222292065982\_1](/bulletins/10208262.md), 2022-03-04, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS. This bulletin describes a condition where the headlight washer may not retract and the associated process to repair. - [Dealer 94O7](/bulletins/10199427.md), 2021-08-04, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH; ELECTRICAL SYSTEM:SOFTWARE. On Audi vehicles with LED and matrix beam headlights with main beam assist, the main beams may be incorrectly activated in rare cases when driving out of a tunnel. - [Bulletin 94O7](/bulletins/10199426.md), 2021-08-04, Service bulletin: EQUIPMENT; EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. On Audi vehicles with LED and matrix beam headlights with main beam assist, the main beams may be incorrectly activated in rare cases when driving out of a tunnel. - [A0021472031473\_3](/bulletins/10198246.md), 2021-07-02, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This information bulletin states to remove the car wash bristle and advise the customer to go somewhere else to prevent it from occurring again. - [A9419172055803\_2](/bulletins/10169117.md), 2020-01-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES. This informational bulletin contains an explanation for a perceived defect. JSON: [/v1/bulletins/10198234](/v1/bulletins/10198234) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20A9421392063739_1&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10198234&vehicle=Service%20bulletin%20A9421392063739_1)