Service bulletin LI54.21-P-078926
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11021149 |
| Published by NHTSA | 2025-08-01 |
| Manufacturer's number | LI54.21-P-078926 |
| Manufacturer's date | 2025-08-01 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Complaint Check engine light comes on when driving/starting the vehicle. No drivability concerns. Cause SW conflict of the 48V battery Remedy Update the 48V battery to SW 25/12 A0019020424
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| MERCEDES-BENZ AMG CLA35 | 2020 to 2024 |
|---|---|
| MERCEDES-BENZ AMG CLA45 | 2020 to 2023 |
| MERCEDES-BENZ AMG GLA 35 | 2024 to 2025 |
| MERCEDES-BENZ AMG GLA35 | 2021 to 2023 |
| MERCEDES-BENZ AMG GLA45 | 2021 to 2023 |
| MERCEDES-BENZ AMG GLB35 | 2021 to 2025 |
| MERCEDES-BENZ CLA 250 | 2020 to 2025 |
| MERCEDES-BENZ GLA 250 | 2021 to 2025 |
| MERCEDES-BENZ GLB 250 | 2020 to 2025 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.