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Tesla update 2026.38.5.1 disables third-party V2L devices
Tesla owners report on the Tesla Motors Club forum that software update 2026.38.5.1 interferes with third-party vehicle-to-load (V2L) devices that let them draw electricity from the battery. The first case, posted October 19 by the owner of a 2022 Model 3, says their inverter, used almost daily for more than 18 months, began cutting power about three minutes after they started using it. According to that same owner, the device drew roughly 3 kW before shutting down, and the vehicle showed a battery management system fault.…
- Third-party V2L inverter cuts power about 3 minutes after update 2026.38.5.1
- Powershare is now available on all Model 3 and Model Y variants sold in the US
🔎 Why it matters: Version 2026.38.5.1 affects third-party V2L devices that connect to the CCS port through non-official methods, unlike Powershare. The data comes from owner reports; the text includes no statement from Tesla about the cause.
📈 Upside: Powershare, the official V2L route, is now available on all Model 3 and Model Y variants sold in the US.
📉 Risk: According to reports, third-party devices stop working properly after installing 2026.38.5.1, and Elejoy's test firmware did not fix it.
🤖 Editorial summary of the cited source, with AI-assisted analysis -- not HgYperDrive original reporting. The original source is linked above for verification. More on how this works: editorial policy →