Honda Civic 2020 — technical service bulletin
Bulletin A20-032 · NHTSA communication 10174697 · issued Apr 16, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
2
vehicle entries
Official summary
"Service bulletin - During production, the latest software version for the ACC/CMBS (adaptive cruise control/collision mitigation braking system), which is part of the VSA-modulator control unit, was not installed in the vehicle. Vehicles without the latest software may be unable to maintain speed after setting the ACC."
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.