Mercedes-Benz GLS 450 2020–2021 — technical service bulletin
Bulletin LI54.65-P-072662 · NHTSA communication 10191273 · issued Mar 17, 2021
Technical service bulletin
communication type
Back Over Prevention
component
2020–2021
model years
5
vehicle entries
Official summary
Unmotivated park sensor warnings without any objects in the vicinity
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.