Mazda CX-5 2019–2021 — technical service bulletin
Bulletin 08-003-21-3837 · NHTSA communication 10203725 · issued Nov 19, 2021
Technical service bulletin
communication type
Equipment
component
2019–2021
model years
3
vehicle entries
Official summary
Some vehicles equipped with a seat ventilation system may have the passenger seat belt warning light on, even though there is no passenger in the seat. This concern may be caused by an overly sensitive detection of the occupancy sensor. The weight of the seat ventilation unit may be captured by the occupancy sensor, resulting in a false detection.
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.