Service bulletin A901662 2042388-

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.

NHTSA's summary

Instrument cluster display or MIB system performs intermittent reset. Customer may report that the instrument cluster center display and/or the MIB system briefly perform a reset or cut out. DTC entries for ?optical data bus, interruption, sporadic? are logged in control units connected to the MOST bus. On A6 and A7 vehicles with PR code 9Q8 (Top instrument cluster), a software condition can cause the instrument cluster to cause disturbances on the MOST bus, causing the MMI to reboot. New software in the instrument cluster control module, J285 (address word 17), addressed the condition.

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Software

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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