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September 4, 2025 Service bulletin

Complaint No audio is output either in radio mode, or with media playback via app, Bluetooth or USB. In...

Mercedes-Benz technical service bulletin LI82.62-P-077311 for 2022-2025 Mercedes-Benz C300, 2023-2026 Mercedes-Benz GLC 300 and 2020-2025 Mercedes-Benz CLA250 and others.

Bulletin number
LI82.62-P-077311
Component
Electrical system
Summary
Complaint No audio is output either in radio mode, or with media playback via app, Bluetooth or USB. In such cases, "Playback not active" is shown in the display. Cause Mute line between communication module N112/2 and sound control unit N40/3. Remedy Check the mute cable between control units N112/2 (communication module) and N40/3 (sound system). • Inspect the cable and plug contacts for damage or deformation. • Repair or replace the cable as needed. Important: If any plug contact is found to be deformed, you must also inspect the corresponding connector on the control unit to ensure it is not compromised.

Owners of these vehicles have filed 356 complaints in the electrical category.

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