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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz A 220 2019–2025 — technical service bulletin

Bulletin LI54.10-P-078888 · NHTSA communication 11022052 · issued Aug 1, 2025

Technical service bulletin
communication type
Electrical System
component
2019–2025
model years
46
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 Then perform the following measures: - Switch on ignition - Read out actual value 209 in XENTRY Diagnosis for G1/3 (48 V battery) "State of Health Capacity-SOHC" -- If the value > 80% doesn't require a healing process -- If the value is < 80%, continue with the following steps Carry out capacity healing procedures: - Discharge 48 V battery in vehicle with igniti

Vehicles covered

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.