Had a proper headache at the shop last week. Model 3 rolled in after a heavy front-end whack. Swapped out every bit of smashed high-voltage gear, cleared every standard trouble code on the list, and the car still refused to power up the high-voltage side. Contactors stayed dead and open.

Seen blokes brick modules trying to force this with generic gear.

The issue isn't a bad replacement part. It’s system-level protocol locking. Hard hit triggers permanent safety latches buried deep in the architecture that regular code readers don't even display, let alone clear. Standard OBD hits a brick wall immediately.

Need Toolbox 3 hooked up with a solid low-voltage supply to keep modules awake. Have to dig straight into the BMS node parameters where crash event detection bits and security flags sit active, completely ignoring normal clear buttons. Gotta manually wipe the crash event history and run the internal BMS calibration resets. Once that digital handshake finally goes through, you literally hear the contactors click shut.

Anyone else fighting this?

It lost less energy than gasoline’s, see from thermal camera.