[s800]

Anyone have more insight into this? An overheating contactor doesn't sound like something that can be fixed with software (except to ignore it).

[aaronbeekay]

They control the heat input, too. Software fixes:

* limit max current (dumbest) * limit max current based on moving average of current over last N seconds * limit max current based on experimentally validated thermal model of contactors (cleverest)

This might even be possible without a significant/noticeable performance hit, if the overheating is only experienced in extreme conditions.

[joneholland]

The contactors might have active cooling controlled by software. The battery packs do.

[Kirby64]

I'm not aware of any contactor design that has active cooling. It would be foolish to have that. It's possible they're doing something incorrect with the pre-charge circuitry, though which could cause overheating.