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October 9, 2026 Over-the-air update

Issue A software update will be performed that provides enhancements to the robustness and system...

Mercedes-Benz technical service bulletin OTA- Comm. Mod. SW Upd. for 2023-2027 Mercedes-Benz C300, 2025-2027 Mercedes-Benz E350 and 2023-2027 Mercedes-Benz GLC 300 and others.

Bulletin number
OTA- Comm. Mod. SW Upd.
Component
Electrical system
Summary
Issue A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

Owners of these vehicles have filed 165 complaints in the electrical category.

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