Tesla just doubled the warranty on the Cybertruck's most feared part

If you own a 2024 or 2025 Cybertruck, the part everyone in the owner forums has been dreading just became a lot less scary. On August 7, Tesla acknowledged on its official Cybertruck account that the Power Conversion System in pre-2026 trucks is defective, and extended its coverage from the standard 4 years or 50,000 miles to 8 years or 150,000 miles. Foundation Series trucks are included.

2026 trucks got a different answer to the same problem: a redesigned PCS, covered for 7 years or 70,000 miles. So the fix for older trucks is a longer warranty, and the fix for new ones is a different part. That split matters if you're shopping used, and we'll come back to it.

Tesla doesn't publicly admit a component defect very often. When it does, it's usually because the repair volume made the quiet approach untenable. That's roughly what the last few months looked like from the outside.

The Power Conversion System is two jobs in one box: it's the onboard charger that turns AC power from your wall into DC for the battery, and it's the converter that feeds the truck's low-voltage systems. When it starts to die, the pattern owners describe is consistent. Home charging drops from 48 amps to 24. Then it stops working entirely.

A truck with a dead PCS can still Supercharge, because DC fast charging bypasses the onboard charger. So you don't lose the truck, you lose the ability to charge it at home, which for most people is where nearly all charging happens. Early on, some failures were worse than that and left trucks stranded; Tesla later shipped a software update specifically so a truck with a failed PCS could keep Supercharging.

Tesla has been covering Supercharging for affected owners while replacement parts clear backorder, which tells you the part has been failing faster than it could be built.

Out of warranty, this repair has been running $5,000 to $7,200. Some owners got roughly a thousand dollars knocked off as a goodwill gesture, which is small comfort on a five-figure-adjacent bill for a part Tesla now says was defective.

Tesla's announcement says owners who paid for PCS replacements will be reimbursed, with the money moving in the coming weeks. What it didn't say is how: whether checks go out automatically, whether you'll need to file through the app, or what proof you'll need. Until that's clear, do the boring thing. Find your service invoice, confirm the line item names the PCS or the onboard charger, and keep it where you can find it.

If your truck is showing the symptoms right now, book service now rather than waiting for the reimbursement mechanics to shake out. The extended warranty applies today, and the parts queue only gets longer every week this stays in the news.

Tesla hasn't published a failure rate, so the honest answer is nobody outside Tesla knows. The most-cited number comes from an owner-run poll that Electrek reported alongside the announcement: 91 of 223 surveyed trucks, about 41%, had needed a PCS replacement. Treat that with care. People whose trucks broke are far more likely to answer a poll about trucks breaking, so the real fleet-wide rate is almost certainly lower. But even heavily discounted, it points at a part that fails a lot.

The individual stories are what pushed this into the open. Torque News ran one this week about a Texas owner whose six-month-old truck lost its high-voltage battery after a few weeks, got fixed, and then lost its PCS three weeks after coming back from service. Stories like that had been stacking up in the owner forums for months before Tesla moved.

We've tracked the PCS on our recalls board since June 3, when it was an owner-reported pattern with no official acknowledgment. One correction on our side: until this week that entry said the extended PCS warranty did not apply retroactively to 2024–25 trucks. That was true when we wrote it. It isn't anymore, and we've updated the entry, because that's the whole point of tracking this stuff.

A warranty extension is Tesla's own program. A recall is a safety action filed with NHTSA, the federal regulator, and it shows up when you run your VIN. This PCS action is the former, so a VIN recall check will come back clean even on a truck that's had three PCS failures. Don't read a clean recall check as a clean bill of health.

For used shoppers, the practical version is this. A 2024–25 truck now carries 8-year, 150,000-mile coverage on its scariest component, which genuinely improves the used value proposition. A 2026 truck has the redesigned part. Either way you're better off than buyers were a month ago; what you no longer want is a pre-2026 truck at a price that was discounted for a risk Tesla just absorbed.

Our recalls page tracks both layers separately: official NHTSA campaigns on top, and service-level issues like this one below them, clearly labeled so they never blur. Decode your VIN on CyberTrack and you can set a recall alert for your specific truck; if the PCS situation ever escalates from warranty program to formal recall, that's the fastest way to hear about it.

This one is reported, not measured. The coverage terms, reimbursement commitment, and repair-cost figures come from Tesla's August 7 announcement on its official Cybertruck account and from coverage by Electrek; the owner account is from Torque News. We credit sources by name and link none of them, same as always.

The 41% figure is a self-selected owner poll (91 of 223 respondents), reported by Electrek. It is not a fleet failure rate and we don't present it as one.

Our own PCS entry has been on the recalls board since June 3, 2026. This report corrects one claim that entry carried before August 7: the retroactivity of the extended warranty, which Tesla's announcement reversed.