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Service bulletin A401549 2018194-

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 id10123658
Published by NHTSA2017-11-17
Manufacturer's numberA401549 2018194-
Manufacturer's date2015-12-18
NHTSA componentSUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION:REAR:SHOCK ABSORBER

NHTSA's summary

Supersedes Technical Service Bulletin Group 40 number 14-41 dated July 2, 2014. Oil appears on one or several shock absorbers. Oil may appear on a shock absorber As a result of a leak because the shock absorber is damaged. Oil may appear on a shock absorber As a result of residue from when the shock was filled during production, or as a result of slight condensation in the seal area. This small amount of oil is for lubrication and it reduces wear on the seal.

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 A32006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
AUDI A3 CABRIOLET2015 to 2017
AUDI A3 SPORTBACK E-TRON2016 to 2017
AUDI A42006, 2007, 2008, 2009, 2010
AUDI A4 ALLROAD2013, 2014, 2015, 2016, 2017
AUDI A4 AVANT2011 to 2012
AUDI A4 CABRIOLET2006 to 2009
AUDI A52008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI A5 CABRIOLET2010 to 2017
AUDI A62006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI A72012, 2013, 2014, 2015, 2016, 2017
AUDI A82006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI ALLROAD2013 to 2017
AUDI Q32015, 2016, 2017
AUDI Q52009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI Q72007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
AUDI Q72017
AUDI R82008, 2009, 2010
AUDI R82013
AUDI R8 GT SPYDER2012
AUDI R8 SPYDER2011
AUDI R8 SPYDER2014 to 2015
AUDI R8 SPYDER2017
AUDI RS 72014, 2015, 2016, 2017
AUDI RS52013
AUDI S32015, 2016, 2017
AUDI S42006, 2007, 2008
AUDI S42010, 2011, 2012, 2013, 2014, 2015, 2016
AUDI S42017
AUDI S52008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI S5 CABRIOLET2010 to 2017
AUDI S62006
AUDI S62007, 2008, 2009, 2010, 2011
AUDI S62013, 2014, 2015, 2016, 2017
AUDI S72013, 2014, 2015, 2016, 2017
AUDI S82013
AUDI S82015, 2016, 2017
AUDI SQ52017
AUDI TT2006
AUDI TT2007
AUDI TT2008, 2009, 2010
AUDI TT ROADSTER2011 to 2017

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
401334201819452024-03-04. Service bulletin. Shock absorber leaks: assessment aid
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.
A4321502059564_22021-07-02. Service bulletin. This bulletin contains instructions for noises on uneven roads using chassis ears or the PICO tool.
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.