I'd say it was a dealer issue for sure.
Although, mine has had brain farts, I mean computer brain farts.And as you cycled a couple of times and it went away, so did mine.
13,000ft is proabably the highest and H3's ever been, LOL, you may be breaking the altitude record.
It is possible to have a bad temp sensor, you may have been running hot and not known it.
Good luck