Volvo XC90 2020 — technical service bulletin
Bulletin TJ34922 1 0 2019 · NHTSA communication 10165237 · issued Aug 31, 2019
Technical service bulletin
communication type
Back Over Prevention
component
2020
model years
2
vehicle entries
Official summary
If there is message in the DIM about ?Sensor Blocked? and the car has DTC CEM B1B3629 and/or B1B4029, follow instructions under ?Service?.
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.