Mercedes-Benz AMG CLS53 2019–2020 — service campaign
Bulletin NCU - 2025100006 · NHTSA communication 11025171 · issued Nov 7, 2025
Service campaign
communication type
Electrical System
component
2019–2020
model years
32
vehicle entries
Official summary
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software does not correspond to the current series production configuration. Some customers may notice a noise from the radiator fan as well as a corresponding fault message displayed in the instrument cluster. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software.
Vehicles covered
- 2019 Mercedes-Benz AMG CLS53
- 2020 Mercedes-Benz AMG CLS53
- 2019 Mercedes-Benz AMG E53
- 2020 Mercedes-Benz AMG E53
- 2019 Mercedes-Benz AMG E63
- 2020 Mercedes-Benz AMG E63
- 2019 Mercedes-Benz AMG E63S
- 2020 Mercedes-Benz AMG E63S
- 2019 Mercedes-Benz AMG GLE63
- 2020 Mercedes-Benz AMG GLE63
- 2019 Mercedes-Benz AMG GLS63
- 2020 Mercedes-Benz AMG GLS63
- 2020 Mercedes-Benz AMG GT43
- 2019 Mercedes-Benz AMG GT53
- 2020 Mercedes-Benz AMG GT53
- 2019 Mercedes-Benz AMG GT63
- 2020 Mercedes-Benz AMG GT63
- 2019 Mercedes-Benz AMG GT63S
- 2020 Mercedes-Benz AMG GT63S
- 2019 Mercedes-Benz CLS 450
- 2020 Mercedes-Benz CLS 450
- 2019 Mercedes-Benz E 300
- 2019 Mercedes-Benz E 450
- 2020 Mercedes-Benz E 450
- 2019 Mercedes-Benz GLE 350
- 2020 Mercedes-Benz GLE 350
- 2020 Mercedes-Benz GLE 350 E
- 2020 Mercedes-Benz GLE 450
- 2020 Mercedes-Benz GLE 580
- 2019 Mercedes-Benz GLS 450
- 2020 Mercedes-Benz GLS 450
- 2020 Mercedes-Benz GLS 580 4MATIC
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.