Tesla Cybertruck Power Conversion System Suffers Widespread Failures, Leaving Most Owners Unable to Charge at Home; No Recall Issued

Tesla Cybertruck owners are experiencing widespread failures of the Power Conversion System (PCS), rendering many unable to charge their vehicles using home AC chargers. The PCS integrates the onboard charger and DC-DC converter, managing AC input and supplying power to the 48-volt low-voltage system. Failures typically occur between 16,000 and 29,000 kilometers of driving, with some cases recurring even after replacement with a new assembly. Early warning signs include: a center display message stating “AC charging unavailable,” a sudden drop in home charger current from 48 amps to 24 amps or lower, error messages related to vehicle-to-load (V2L) and vehicle-to-home (V2H) functions, and diagnostic trouble codes such as PCS2_a094, PCS2_a095, PCS2_a137, along with high-voltage DC overcurrent trip codes appearing in service mode. Affected vehicles remain drivable and can still use Tesla Supercharger DC fast-charging stations. The PCS is located deep within the vehicle’s structure, requiring removal of the electric tonneau cover, underbody panels, and portions of the air suspension for access. Vehicles equipped with the off-road armor package necessitate additional removal of heavy-duty underbody shields, extending repair labor time to approximately eight hours. Within the basic warranty period (4 years or 80,000 km, whichever comes first), Tesla replaces the PCS assembly and associated wiring harness free of charge with an upgraded version. For out-of-warranty vehicles, prior repair costs ranged from $5,000 to $7,200; recently, Tesla has reduced this to around $1,000 under a “goodwill” policy, though owners still bear the full cost. Service centers currently face shortages of PCS components, and repair turnaround times remain uncertain. Notably, Tesla now offers a 7-year/112,000-km Zero Emission Powertrain Warranty for the 2026 and later Cybertruck models, explicitly covering the PCS. However, 2024 and 2025 Founders Series owners are not eligible for this coverage retroactively. Additionally, Tesla has not yet introduced an Extended Service Agreement (ESA) for the Cybertruck, meaning all post-warranty repairs must be paid out of pocket by owners. Despite dozens of similar failure reports and some service centers proactively replacing the PCS during unrelated repairs, Tesla has not filed a recall with the U.S. National Highway Traffic Safety Administration (NHTSA) nor issued any official notification to affected owners.