Subaru Legacy 2015–2017 — technical service bulletin
Bulletin 09-66-16 · NHTSA communication 10111070 · issued Dec 29, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2017
model years
6
vehicle entries
Official summary
This bulletin announces a change in the production procedure for the rear muffler assembly. Spot-weld locations securing the outer shell portion have been changed to improve overall rigidity. A gap may develop at the spot welded seam as a result of repeated thermal shock (heating / cooling) which occurs during normal use. The gap does not create an exhaust leak. In some cases, a rattling sound from the muffler may develop.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.