Mercedes-Benz AMG C43 2019–2025 — service campaign

Bulletin NCU - 2025080007 · NHTSA communication 11023107 · issued Sep 13, 2025

Service campaign

communication type

Electrical System

component

2019–2025

model years

vehicle entries

Official summary

Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the High Voltage Battery (“HVB”) AC charger software does not correspond to current production specifications. As a consequence, a HVB MIL may illuminate during charging due to fluctuations in power consumption of the charging socket actuator. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the HVB AC Charger Software.

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.