Tesla is extending the warranty on part of the Cybertruck’s charging hardware to eight years after acknowledging a widespread defect, according to a report from Electrek published August 7, 2026.
The affected part is the power conversion system (PCS), which combines the Cybertruck’s onboard charger and DC-DC converter. When it starts to fail, home charging speed drops from 48 amps to 24 amps before stopping altogether. Tesla said in a statement quoted by Electrek that it had “identified PCS electronics in pre-2026 Cybertrucks that do not meet our reliability standards and have made design changes to address this in newer vehicles.”
Under the new terms, 2024 and 2025 Cybertrucks now carry an 8-year/150,000-mile warranty on the PCS. Cybertrucks built for the 2026 model year, which ship with the redesigned part, get a 7-year/70,000-mile warranty.
Owners who already paid to replace a failed PCS out of pocket will be reimbursed, per the report. Electrek says owners had been charged as much as $5,000 to $7,200 for the repair, though Tesla had more recently been discounting it to roughly $1,000 as a “goodwill” gesture before this formal extension. Tesla is also pushing a software update that lets affected trucks keep Supercharging even with a failed PCS, and says it will cover Supercharging costs for owners waiting on replacement parts while the backlog clears.
How common is the failure? Electrek cites an unofficial survey of Cybertruck owners that found roughly 41% of the 223 trucks surveyed — about 91 vehicles — had needed a PCS replacement. That’s a small, self-selected sample, not an official Tesla figure, so treat it as a rough signal rather than a defect rate for the full fleet.
If you own a 2024 or 2025 Cybertruck, check your warranty coverage in the Tesla app or with your service center, and if you already paid for a PCS repair, contact Tesla about reimbursement. If your home charging speed has been dropping over time, that’s the symptom to watch for.
Photo by Florian Avramescu.









