Subaru Ascent 2017–2021 — technical service bulletin
Bulletin 07-198-21 · NHTSA communication 10201057 · issued Aug 25, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2021
model years
10
vehicle entries
Official summary
This bulletin announces availability of new starter motors and ECM reprogramming files created to address some reports of excessive noise while cranking the engine.
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.