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Service bulletin 37H8 - Bulletin

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 id10128353
Published by NHTSA2018-02-05
Manufacturer's number37H8 - Bulletin
Manufacturer's date2017-05-25
NHTSA componentSTEERING:GEAR BOX (OTHER THAN RACK AND PINION)

NHTSA's summary

Over time, affected vehicles may develop gearbox noise due to an insufficient supply of oil within the gearbox.

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

Steering, Steering gear

Vehicles listed
AUDI A3 SPORTBACK E-TRON2017
AUDI A5 CABRIOLET2017
AUDI TT ROADSTER2017

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