# Service bulletin A9421342012749\_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: 10187508 - Published by NHTSA: 2021\-03\-04 - Manufacturer's number: A9421342012749\_1 - Manufacturer's date: 2021\-02\-17 - NHTSA component: EXTERIOR LIGHTING ## NHTSA's summary This bulletin contains instructions for addressing condensation in the headlights. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187508-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187508-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Lighting ## Vehicles listed - 2016 to 2020 AUDI A3 - 2016 to 2018 AUDI A3 SPORTBACK E\-TRON - 2016 to 2022 AUDI A4 - 2016 to 2022 AUDI A5 - 2016 to 2021 AUDI A5 CABRIOLET - 2016 to 2022 AUDI A6 - 2016 to 2021 AUDI A7 - 2016 to 2020 AUDI A8 - 2021 to 2022 AUDI A8 - 2019 AUDI E\-TRON - 2020 AUDI E\-TRON - 2021 to 2022 AUDI E\-TRON - 2016 to 2022 AUDI Q3 - 2016 to 2021 AUDI Q5 - 2022 AUDI Q5 SPORTBACK - 2016 AUDI Q7 - 2017 to 2022 AUDI Q7 - 2019 to 2022 AUDI Q8 - 2017 to 2018 AUDI R8 - 2020 AUDI R8 - 2019 AUDI RS 5 - 2021 AUDI RS 5 - 2016 to 2018 AUDI RS 7 - 2021 to 2022 AUDI RS 7 - 2020 to 2022 AUDI RS Q8 - 2016 to 2017 AUDI RS5 - 2016 to 2018 AUDI RS6 - 2019 to 2020 AUDI RS7 - 2016 to 2020 AUDI S3 - 2021 AUDI S3 - 2016 AUDI S4 - 2017 AUDI S4 - 2018 to 2022 AUDI S4 - 2016 to 2022 AUDI S5 - 2016 to 2018 AUDI S6 - 2020 to 2022 AUDI S6 - 2016 to 2018 AUDI S7 - 2019 AUDI S7 - 2020 to 2022 AUDI S7 - 2016 AUDI S8 - 2020 to 2022 AUDI S8 - 2018 to 2022 AUDI SQ5 - 2020 to 2022 AUDI SQ7 - 2020 to 2022 AUDI SQ8 - 2016 to 2021 AUDI TT - 2018 to 2021 AUDI TT RS - 2016 to 2021 AUDI TTS ## Recalls for the same vehicles and component - [2025167](/recalls/tc/2025167.md), 2025-03-31: Lights And Instruments - [20V737000](/recalls/nhtsa/20V737000.md), 2020-11-25: ELECTRICAL SYSTEM; EXTERIOR LIGHTING:TAIL LIGHTS - [2020499](/recalls/tc/2020499.md), 2020-10-20: Lights And Instruments - [2020468](/recalls/tc/2020468.md), 2020-10-06: Lights And Instruments - [2019241](/recalls/tc/2019241.md), 2019-05-23: Lights And Instruments - [19V385000](/recalls/nhtsa/19V385000.md), 2019-05-23: EXTERIOR LIGHTING:TURN SIGNAL - [2017318](/recalls/tc/2017318.md), 2017-06-27: Lights And Instruments - [17V400000](/recalls/nhtsa/17V400000.md), 2017-06-26: FORWARD COLLISION AVOIDANCE: CRASH IMMINENT BRAKING; EXTERIOR LIGHTING:BRAKE LIGHTS - [16V642000](/recalls/nhtsa/16V642000.md), 2016-09-06: ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING - [2016427](/recalls/tc/2016427.md), 2016-09-02: Lights And Instruments ## 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. - [A9424752073316\_1](/bulletins/10251661.md), 2024-04-04, Service bulletin: EXTERIOR LIGHTING:BRAKE LIGHTS; UNKNOWN OR OTHER. This bulletin provides information when there is a warning for the 3rd brake light; DTC B12C615. - [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. - [A9023462070332\_2](/bulletins/10244537.md), 2023-11-06, Service bulletin: EQUIPMENT; EXTERIOR LIGHTING:TURN SIGNAL. This bulletin provides information for when the turn signal is very loud with Virtual Cockpit. - [A9023372064789\_4](/bulletins/10241235.md), 2023-09-01, Service bulletin: EXTERIOR LIGHTING. This bulletin provides information for when there are various malfunction LEDs lit sporadically without any DTCs stored. - [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. - [A9023252070332\_1](/bulletins/10236646.md), 2023-06-06, Service bulletin: EXTERIOR LIGHTING:TURN SIGNAL. This bulletin provides information for when the turn signal is unusually loud. JSON: [/v1/bulletins/10187508](/v1/bulletins/10187508) [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%20A9421342012749_1&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10187508&vehicle=Service%20bulletin%20A9421342012749_1)