# Service bulletin A901235 2030903\-

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: 10122774
- Published by NHTSA: 2017\-11\-08
- Manufacturer's number: A901235 2030903\-
- Manufacturer's date: 2012\-10\-01
- NHTSA component: ELECTRICAL SYSTEM; LANE DEPARTURE

## NHTSA's summary

Supersedes Technical Service Bulletin Group 90 number 12 ? 34 dated September 21, 2012. When driving, various warning lights come on, sometimes with restricted functions in the electric system. These complaints only occur together with complaints or a failure of the MMI 3G\+ infotainment system. After an ignition cycle the complaint is typically gone; therefore, it may not be reproducible. Sporadic DTCs may be present for communication errors, restricted functions, or missing/incorrect messages. If the MMI 3G\+ has an issue, the data bus control unit \(Gateway\) tries to maintain the communication to the MMI. The load on the unit is so high that other messages on the bus systems cannot be processed any more. As a remedy, modified software can be installed on the Gateway which does not communicate to the MMI 3G\+ when it is unavailable.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10122774-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10122774-0001.pdf)

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

## Components

Driver assistance, Electrical system

## Vehicles listed

- 2012 AUDI A6
- 2012 AUDI A7
- 2011 to 2012 AUDI A8

## Recalls for the same vehicles and component

- [2016409](/recalls/tc/2016409.md), 2016-08-22: Electrical

## Other bulletins for the same vehicles and component

- [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\_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\_2059335\_6](/bulletins/11029370.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. This TSB provides information when there are noises from the area around the instrument cluster.
- [TSB\_2080681\_1](/bulletins/11028448.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information regarding contact checks for event memories, intermittent.
- [TSB\_2080329\_1](/bulletins/11028446.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when there are noises from the headliner.
- [TSB\_2056019\_5](/bulletins/11028397.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the anti\-theft alarm activates for no reason, or does not activate.

JSON: [/v1/bulletins/10122774](/v1/bulletins/10122774)

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