Tesla admits Cybertruck PCS defect, extends warranty to 8 years

Tesla has admitted that a part in Cybertrucks built before 2026 doesn't meet its reliability standards, and it's extending the warranty on that part to 8 years or 150,000 miles. The part, called the power conversion system (PCS), combines the onboard charger and DC-DC converter. When it fails, home charging speed drops and eventually stops working entirely. An owner poll found nearly 41% of trucks needed a PCS replacement, with repair bills running $5,000 to $7,200 out of pocket for anyone outside the original 4-year/50,000-mile warranty.

If you own a 2024 or 2025 Cybertruck, this extended coverage now applies to you, and Tesla says it will reimburse owners who already paid for the repair. A software update also lets the truck keep Supercharging even if the PCS fails, so a bad unit no longer strands the vehicle. Tesla says it will cover Supercharging costs for affected owners until it works through a parts backlog. The 2026 Cybertruck ships with a redesigned PCS and carries a shorter 7-year/70,000-mile warranty on that part.

This isn't a home-charging or solar equipment issue, so it doesn't affect your house wiring or charger. But if you're weighing an EV purchase and thinking about charging it with home solar, it's a reminder to check what warranty coverage applies to any EV's charging components before you buy, since terms can vary by model year and manufacturer.