A growing number of Tesla Cybertruck owners have lost the ability to charge at home after failures in the truck’s Power Conversion System. Tesla is replacing the units case by case without issuing a recall.
The Power Conversion System combines the onboard charger and DC-DC converter. When it fails, Level 2 AC charging stops, although the truck can still use Superchargers in many cases. Owners have reported the issue at mileages ranging from under 10,000 to more than 31,000.
A self-selected poll on the Cybertruck Owners Club showed that 40.8 percent of 223 respondents had their PCS replaced under warranty. Tesla has supplied a revised unit with part number 1777777-T2-G and a new wiring harness, though replacements require several hours of labor and are currently on backorder.
For vehicles still under the basic 4-year/50,000-mile warranty the repair is free. Tesla has lowered the out-of-warranty cost to about $1,000 as a goodwill measure. The company has also issued a firmware update that keeps Supercharging available and is covering those costs for affected owners until repairs are completed.
Tesla added a 7-year/70,000-mile propulsion warranty that covers the PCS on 2026 models, but the coverage is not retroactive to earlier trucks.