Subaru Ascent 2019–2020 — technical service bulletin
Bulletin SubaruNet Announ · NHTSA communication 10216996 · issued Jul 29, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
4
vehicle entries
Official summary
Recently following the release of the WRK-21 CVT Chain Guide Breakage, SOAâ s Techline started to receive some retailer inquiries regarding TCMs not accepting the testing/ temporary pak file or the final pak file and then failing to communicate.
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.