Cybertruck failure kills home charging, and Tesla is avoiding a recall

Cybertruck failure kills home charging, and Tesla is avoiding a recall as some owners report losses of Level 2 AC charging due to problems with the truck’s Power Conversion System (PCS). The PCS combines the Cybertruck’s onboard charger and a DC-DC converter that steps the high-voltage pack down to a 48-volt system. The reported pattern described across Tesla-focused forums is that home charging drops from 48 amps to 24 amps, then stops within days, with an “AC Charging Unavailable” warning and service-mode codes logged after a failed MOSFET health check inside the converter. Owners say the trucks may still drive and can charge via Superchargers, though some enter a speed-limited Service Mode. Forum members tracked failures at mileages ranging from under 10,000 miles to 31,250 miles, and some report a second PCS failure after replacement. The article cites a self-selected poll of 223 voters on the Cybertruck Owners Club: 40.8% reported PCS failure replaced under warranty, 6.7% suspected pending confirmation, and 0.9% paid out of pocket, while 52% reported no issue. Tesla reportedly replaces parts case-by-case without issuing a recall, using a revised PCS hardware revision described as part number 1777777-T2-G plus a new wiring harness, which requires multi-component teardown including the tonneau cover and bed floor. It notes a prior late-2024 recall of over 2,000 Cybertrucks for inverter replacement related to a MOSFET issue.