Mercedes-Benz AMG GLB35 2020–2023 — technical service bulletin
Bulletin LI72.00-P-075656 · NHTSA communication 10228813 · issued Dec 5, 2022
Technical service bulletin
communication type
Structure
component
2020–2023
model years
10
vehicle entries
Official summary
Complaint Staining on door trim strips and top and bottom trim elements on rear side windows. See example pictures 1, 2 and 3. Cause Damage to protective coating of door beltline trim strips, door upper trim strips and side window trim element. Remedy 1. Check if the problem cannot be rectified by polishing the trim bars with the polishing paste. 2. If the complaint cannot be rectified, replace the door beltline trim bars, door upper trim bars and rear side window with trim element with optimized protective coating.
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.