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

Bulletin number

NCU - 2026010002

Component

Electrical system

Summary

Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the drivetrain control unit software does not correspond to the current series production configuration. Consequently, the vehicle may experience temporary functional impairments, such as an increased operation of the vehicle cooling fan, no-start conditions, and various warnings and faults such as MIL or cooling system malfunction messages. All symptoms resolve following a bus idle and restart. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the drivetrain control unit software on the affected vehicles.

Owners of these vehicles have filed 64 complaints in the electrical category.