Mercedes-Benz AMG CLA45 2014–2025 — service campaign
Bulletin NCU-2025040008 · NHTSA communication 11018215 · issued May 2, 2025
Service campaign
communication type
Engine
component
2014–2025
model years
36
vehicle entries
Official summary
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the SCN coding in the Belt-driven Starter Alternator (BSA) control unit does not correspond to the latest production specifications. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will perform an SCN coding in the BSA control unit.
Vehicles covered
- 2014 Mercedes-Benz AMG CLA45
- 2015 Mercedes-Benz AMG CLA45
- 2016 Mercedes-Benz AMG CLA45
- 2017 Mercedes-Benz AMG CLA45
- 2018 Mercedes-Benz AMG CLA45
- 2019 Mercedes-Benz AMG CLA45
- 2024 Mercedes-Benz AMG GLA 35
- 2025 Mercedes-Benz AMG GLA 35
- 2021 Mercedes-Benz AMG GLA35
- 2022 Mercedes-Benz AMG GLA35
- 2023 Mercedes-Benz AMG GLA35
- 2021 Mercedes-Benz AMG GLA45
- 2022 Mercedes-Benz AMG GLA45
- 2023 Mercedes-Benz AMG GLA45
- 2021 Mercedes-Benz AMG GLB35
- 2022 Mercedes-Benz AMG GLB35
- 2023 Mercedes-Benz AMG GLB35
- 2024 Mercedes-Benz AMG GLB35
- 2025 Mercedes-Benz AMG GLB35
- 2018 Mercedes-Benz CLA 250
- 2019 Mercedes-Benz CLA 250
- 2014 Mercedes-Benz CLA250
- 2015 Mercedes-Benz CLA250
- 2016 Mercedes-Benz CLA250
- 2017 Mercedes-Benz CLA250
- 2021 Mercedes-Benz GLA 250
- 2022 Mercedes-Benz GLA 250
- 2023 Mercedes-Benz GLA 250
- 2024 Mercedes-Benz GLA 250
- 2025 Mercedes-Benz GLA 250
- 2020 Mercedes-Benz GLB 250
- 2021 Mercedes-Benz GLB 250
- 2022 Mercedes-Benz GLB 250
- 2023 Mercedes-Benz GLB 250
- 2024 Mercedes-Benz GLB 250
- 2025 Mercedes-Benz GLB 250
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.