The check engine light illuminates or the 48 V message is displayed in the instrument cluster
Mercedes-Benz technical service bulletin LI54.10-P-078888 for 2020-2025 Mercedes-Benz CLA250, 2021-2025 Mercedes-Benz GLA 250 and 2020-2025 Mercedes-Benz GLB 250 and others.
- Bulletin number
- LI54.10-P-078888
- Component
- Electrical system
- Summary
- Complaint The check engine light illuminates or the 48 V message is displayed in the instrument cluster Cause Fault code "P0A7F00" stored in the 48 V battery G1/3 and/or is current. Remedy Update the 48V battery to SW 25/12 A0019020424
Owners of these vehicles have filed 63 complaints in the electrical category.
Vehicles covered
- Mercedes-Benz CLA250 2020-2025 202020212022202320242025
- Mercedes-Benz GLA 250 2021-2025 20212022202320242025
- Mercedes-Benz GLB 250 2020-2025 202020212022202320242025
- Mercedes-Benz A 220 2019-2022 2019202020212022
- Mercedes-Benz AMG Cla45 2020-2023 2020202120222023
- Mercedes-Benz AMG Gla45 2021-2023 202120222023
- Mercedes-Benz AMG Glb35 2021-2025 20212022202320242025
- Mercedes-Benz AMG Cla35 2020-2024 20202021202220232024
- Mercedes-Benz AMG A35 2020-2021 20202021
- Mercedes-Benz AMG Gla35 2021-2025 20212022202320242025
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