# Service bulletin Circular90L2REV1

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: 10158694
- Published by NHTSA: 2019\-05\-06
- Manufacturer's number: Circular90L2REV1
- Manufacturer's date: 2019\-04\-05
- NHTSA component: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

## NHTSA's summary

In affected vehicles, it is possible to have the following software\-related issues with adaptive cruise \(driver assist system\): \- Loss of target object at close range and erroneous drive\-off warning in stop\-and\-go traffic \- Occasional restrictions to comfort when driving over crests or through dips Perform software update to correct for these conditions. Revision Summary: Removed claiming and work instructions for vehicles with both Criteria 01 \& 02 and Updated claiming and work instructions for vehicles with only Criteria 02.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158694-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158694-9999.pdf)

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

## Components

Driver assistance, Adaptive cruise control

## Vehicles listed

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

## 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.
- [A9120422055338\_4](/bulletins/10185282.md), 2021-01-08, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; EQUIPMENT. This informational bulletin contains information on when the Adaptive Cruise Assist on DTC C12EBF1 with symptom code 11567120.
- [A9120542053776\_7](/bulletins/10185263.md), 2021-01-08, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains a software update and test plan for DTCs C12EBF1 or C12EB92.
- [A9120552061792\_1](/bulletins/10185262.md), 2021-01-08, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL:SOFTWARE. This bulletin contains a software update to address Adaptive Cruise Assist issues.
- [A9120562061817\_1](/bulletins/10185261.md), 2021-01-08, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update that addresses issues with the adaptive driving assistant and DTC C12EBF1 .
- [A9020672055906\_3](/bulletins/10180134.md), 2020-10-06, Service bulletin: ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: ADAPTIVE LIGHTING. This bulletin contains PSS instructions for when the Audi Adaptive light, pre sense malfunction, and the Adaptive Cruise Assist does not work.
- [A9019292056123\_1](/bulletins/10165556.md), 2019-10-02, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains information on the adaptive cruise assist function.
- [A9019282056016\_1](/bulletins/10164507.md), 2019-09-09, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: ADAPTIVE LIGHTING. This bulletin contains repair instructions for DTC C12B3F2.
- [A9119842056004\_1](/bulletins/10164484.md), 2019-09-09, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. This bulletin contains instructions to call TAC when DTC C110300 is present.
- [A9119772054301\_2](/bulletins/10164223.md), 2019-09-09, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE. This informational bulletin contains instructions for when the DTC C12EBF3 appears.

JSON: [/v1/bulletins/10158694](/v1/bulletins/10158694)

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