# Service bulletin A941673 2042842\-

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: 10118314
- Published by NHTSA: 2017\-10\-04
- Manufacturer's number: A941673 2042842\-
- Manufacturer's date: 2016\-01\-12
- NHTSA component: EXTERIOR LIGHTING:HEADLIGHTS

## NHTSA's summary

Warning messages for the exterior lighting system are displayed in the driver information cluster. The messages are sporadically displayed immediately after engine start. The headlights function correctly at all times. DTCs U112300 \(Data bus, received error value\), B121713 \(Lamp for left dipped beam, interruption\), U112300 \(Data bus, received error value \(symptom 13706046\)\), and U112300 \(Data bus, received error value \(symptom 13706047\)\) are stored. It is a software\-related issue in in the headlamp range control module, J431 \(address word 55\). Updated software was introduced into series production.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10118314-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10118314-0001.pdf)

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

## Components

Lighting, Headlights

## Trouble codes named

B1217, U1123

## Vehicles listed

- 2016 AUDI TT ROADSTER

JSON: [/v1/bulletins/10118314](/v1/bulletins/10118314)

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