Mercedes-Benz S 500 2021–2023 — technical service bulletin
Bulletin LI82.62-P-076176 · NHTSA communication 10235668 · issued Apr 11, 2023
Technical service bulletin
communication type
Structure
component
2021–2023
model years
10
vehicle entries
Official summary
Complaint Static noises from speakers while driving (see video labeled example of noise). Static noise is no longer present after opening a window (slightly) or when sliding sunroof is in tilt position. Cause A total of 4 sensors are installed at the axle housings for the "Active driving noise compensation" function. These record driving noise and transfer them to control unit N156/1 - Active driving sound compensation (ASX7) as electrical pulses. The angle bracket of the sensor may come into contact with the longitudinal member of the body. As a result, unintended vibration may be transferred
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.