# Service bulletin A901908 20541971

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: 10155408
- Published by NHTSA: 2019\-04\-01
- Manufacturer's number: A901908 20541971
- Manufacturer's date: 2019\-03\-05
- NHTSA component: EQUIPMENT; LANE DEPARTURE

## NHTSA's summary

This bulletin contains repair instructions for when the driver assist systems temporarily stop working with DTC C12D5FA.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10155408-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10155408-9999.pdf)

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

## Components

Driver assistance, Equipment and accessories

## Trouble codes named

C12D5

## Vehicles listed

- 2019 AUDI A6
- 2019 AUDI A7
- 2019 AUDI A8
- 2019 AUDI Q8

## Recalls for the same vehicles and component

- [26V125000](/recalls/nhtsa/26V125000.md), 2026-03-04: LANE DEPARTURE:SOFTWARE
- [25V900000](/recalls/nhtsa/25V900000.md), 2025-12-19: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [SM 13\-2026](/bulletins/11030982.md), 2026-04-07, Other: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
- [AWA 24\-04](/bulletins/11002281.md), 2024-06-25, Warranty extension: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction of the AEB system’s control unit, camera\(s\), LIDAR, and/or sensor\(s\) which enable automatic emergency braking functionality.
- [AWA 24\-04](/bulletins/11002181.md), 2024-06-25, Warranty extension: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction of the AEB system’s control unit, camera\(s\), LIDAR, and/or sensor\(s\) which enable automatic emergency braking functionality.
- [A9124992073629\_1](/bulletins/10253289.md), 2024-05-07, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides information when the Apple CarPlay connection is dropped repeatedly in short intervals.
- [A9124022062466\_5](/bulletins/10254054.md), 2024-05-06, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. This bulletin provides information when Apple CarPlay cannot be started using the Wi\-Fi connection \(Wireless Carplay\).
- [Audi\-A7\-S7](/bulletins/10253422.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi Delivery Guidelines.
- [A7\-S7\-A](/bulletins/10253420.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi Delivery Guidelines.
- [A7\-S7](/bulletins/10253419.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi Delivery Guidelines.
- [A6\-S6\-A](/bulletins/10253418.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi Delivery Guidelines.
- [A6\-S6](/bulletins/10253417.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Audi Delivery Guidelines.

JSON: [/v1/bulletins/10155408](/v1/bulletins/10155408)

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