# Service bulletin A091701 2046321\-

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: 10128195
- Published by NHTSA: 2018\-02\-05
- Manufacturer's number: A091701 2046321\-
- Manufacturer's date: 2017\-03\-06
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

This repair authorization is for DTC B12ECF2 and DTC B12EDF2 when the LED control module has had water access it.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10128195-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10128195-0001.pdf)

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

## Components

Electrical system

## Trouble codes named

B12EC, B12ED

## Vehicles listed

- 2016 to 2017 AUDI A3 CABRIOLET
- 2016 to 2017 AUDI A6
- 2016 to 2017 AUDI Q3

## Recalls for the same vehicles and component

- [18V862000](/recalls/nhtsa/18V862000.md), 2018-12-05: ELECTRICAL SYSTEM:WIRING
- [16V642000](/recalls/nhtsa/16V642000.md), 2016-09-06: ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING

## Other bulletins for the same vehicles and component

- [TSB\_2073747\_4](/bulletins/11035810.md), 2026-08-05, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.
- [TSB\_2059335\_7](/bulletins/11034643.md), 2026-07-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when there are noises from the area around the instrument cluster.
- [TSB\_2074729\_3](/bulletins/11034634.md), 2026-07-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informationwhen noises/vibration are detected from front of vehicle in dynamic mode.
- [TSB\_2080517\_4](/bulletins/11033492.md), 2026-06-04, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.
- [TSB\_2080517\_3](/bulletins/11032165.md), 2026-05-05, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.
- [TSB\_2081409\_1](/bulletins/11031053.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiton regarding the Universal Traffic Recorder.
- [TSB\_2081405\_1](/bulletins/11031051.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn about various infortainment system complaints.
- [TSB\_2024323\_13](/bulletins/11030985.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2024323\_12](/bulletins/11030984.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2080517\_2](/bulletins/11029407.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.

JSON: [/v1/bulletins/10128195](/v1/bulletins/10128195)

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