Subaru Ascent 2019–2021 — technical service bulletin
Bulletin 11-202-21 · NHTSA communication 10188162 · issued Feb 4, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2021
model years
7
vehicle entries
Official summary
This bulletin announces availability of reprogramming files for the ECM. These new files will address DTC P1160 and customer concerns of extended cranking in cold temperatures.
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.