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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz A 220 2019–2025technical service bulletin

Bulletin LI54.10-P-078888 · NHTSA communication 11021148 · issued Aug 1, 2025

Technical service bulletin
communication type
Electrical System
component
2019–2025
model years
45
vehicle entries

Official 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

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.