[kamocat]

Well, it worked fine today. I even held it in a 41 Amp stall for 5 seconds.
There's only two causes I can think of.

One is that perhaps it had tripped the breaker and needed "voltage enable" to be sent again. However, I'm pretty sure I would have seen movement out of it before that happened.

The other is that today I'm outside at 15 degrees Celcius. Friday I was inside at 30 degrees. The Jaguar only said its internal temperature was 37 degrees on Friday. I thought it would operate up to 50.

(Note: I haven't opened it up yet.)