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Service bulletin Circular93D2REV3

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10176055
Published by NHTSA2020-06-04
Manufacturer's numberCircular93D2REV3
Manufacturer's date2020-05-20
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

It is possible that the high-voltage battery housing bonded seam was made in a non-optimal position. If this condition is present, moisture can enter the high-voltage battery housing. The driver may be alerted to this condition by the illumination of a high-voltage system warning indicator on the instrument cluster display. Updated claiming and work instructions in the event the coolant expansion tank is damaged.

The document

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

Vehicles listed
AUDI A3 SPORTBACK E-TRON2016

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