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January 31, 2026 Service campaign

Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject...

Mercedes-Benz technical service bulletin NCU - 2026010006 for 2020 Mercedes-Benz GLC 300, 2020 Mercedes-Benz AMG Glc43 and 2020 Mercedes-Benz GLC 350 E and others.

Bulletin number
NCU - 2026010006
Component
Engine
Summary
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software may not correspond to current production specifications. The control unit may experience a delay in detecting an intake manifold leak while driving in hybrid mode. Subsequently, this may cause a delay in the activation of the Malfunction Indicator Lamp intended to alert the driver of the leakage. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software.

Owners of these vehicles have filed 27 complaints in the engine category.

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