Mercedes-Benz EQB 250+ 2022–2025 — technical service bulletin

Bulletin LI83.20-P-076623 · NHTSA communication 11032364 · issued May 5, 2026

Technical service bulletin

communication type

Visibility/wiper

component

2022–2025

model years

vehicle entries

Official summary

Complaint • Insufficient heating output in vehicle interior • Customer describes a one-off, loud "plopping" noise during the journey Workshop findings: • Refrigerant line between refrigerant compressor and condenser is cracked • If listed line is cracked, please conduct the following tests 1. Are the fault codes B19A200 or P053400 current or stored in air conditioner control unit N10*1? 2. Check dryer cartridge at condenser for particles: Remove dryer cartridge, illuminate inlet of dryer cartridge using flashlight (A), and examine filter screen through outlet of dryer cartridge (B) -> see comp

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.