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Service bulletin A421635 2042645-

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 id10128008
Published by NHTSA2018-02-05
Manufacturer's numberA421635 2042645-
Manufacturer's date2016-10-03
NHTSA componentSUSPENSION:REAR:SHOCK ABSORBER

NHTSA's summary

This bulletin provides information regarding the repair of rear shock mounting due to noises.

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

Suspension, Shocks and struts

Vehicles listed
AUDI S32015, 2016

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

Other bulletins for the same vehicles and component
401441201819462024-03-04. Service bulletin. Shock absorber leaks: assessment aid
A4022462047758_82022-08-03. Service bulletin. This bulletin states to lightly lubricate the contact surface between the buffer stop for the shock absorber, and the front shock absorber cap to address cracking noises/spring jumps when steering or maneuvering.
A4021292047758_72022-01-05. Service bulletin. This bulletin contains instructions for proper lubrication of the shock absorber to prevent cracking noises or spring jumps when steering.
A4220432059240_12020-05-07. Service bulletin. This bulletin contains repair instructions for knocking or rattling when driving on uneven roads.
A4219392042645_72019-09-09. Service bulletin. This bulletin provides information regarding the repair of rear shock mounting due to noises.
A401993 2047758-2019-04-08. Service bulletin. This bulletin contains instructions for proper lubrication of the shock absorber to prevent cracking noises or spring jumps when steering.
A401889 20477582019-02-25. Service bulletin. This bulletin contains instructions for proper lubrication of the shock absorber to prevent cracking noises or spring jumps when steering.
A401881 2044060-2018-10-15. Service bulletin. This technical service bulletin asks the reader to check for improperly installed or deformed front shock bellows and to replace if necessary.
A401879 2047758-2018-09-17. Service bulletin. This bulletin contains instructions for proper lubrication of the shock absorber to prevent cracking noises or spring jumps when steering.
A401762 2047758-2018-02-05. Service bulletin. This bulletin contains instructions for proper lubrication of the shock absorber to prevent cracking noises or spring jumps when steering.