Subaru Crosstrek 2019–2020 — technical service bulletin
Bulletin 10-101-21 · NHTSA communication 10198754 · issued Jun 9, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
2
vehicle entries
Official summary
This bulletin announces a design change made to the heater control assembly in response to a small number of customer concerns of the climate control not producing enough heat when driving in EV mode (engine not running.)
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.