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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz AMG GLC63 2020–2021 — technical service bulletin

Bulletin LI82.27-P-072402 · NHTSA communication 10189406 · issued Feb 22, 2021

Technical service bulletin
communication type
Back Over Prevention
component
2020–2021
model years
31
vehicle entries

Official summary

If the exhaust flap is operated or the drive program is changed within 10 seconds of the engine being started, an audible humming noise may emit from the speakers. New sound amp (N40/3) software is currently in development. This document will be updated once it is released. Meanwhile, avoid toggling the drive program or the exhaust flap with 10 seconds of an engine start to avoid the possibility of the complaint occurring. Note: Do not replace any parts as this will not remedy the complaint

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.