Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz A 220 2019–2025technical service bulletin

Bulletin LI54.10-P-078888 · NHTSA communication 11014254 · issued Feb 11, 2025

Technical service bulletin
communication type
Electrical System
component
2019–2025
model years
34
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 Perform guided test for fault code "P0A7F00". Important! To ensure a bus idle of 90 minutes is achieved, the vehicle should be locked and the key placed a minimum of 30 feet from the vehicle) See SI82.85-P-0046A

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.