Battery overheated whilst parked in basement

how many km on her?

is the battery intake filter grille clean?

 

Was this the state of charge when you turned it off, prior to the movie? If so, did you notice any change when you came back?

I’ve noticed on hot days after a lot of driving, engine will sometimes keep running when stopped, even with battery state of charge display looking good. This is on a 3rd gen though.

 

Sounds like an early hv battery failure on a 2022. Should be warranty.

 

Try Dr Prius (Carista Bluetooth OBD adapter works well with it) to get some idea of hybrid battery condition.

again, I’ve seen similar behaviour on hot days, after a lot of driving.

Parking it hot in a hot enclosure can’t be good though. About a year back we replaced our solid wood garage doors with with steel sheathed insulated doors, at least in part for this reason: it would get very hot in the garage on summer afternoons, and bringing in a hot car didn’t help.

 

32c shouldn’t cause any problems, maybe just an anomaly

 

Yeah, I live in California and our summers for the past 6 years have been brutal. 110-115 Fahrenheit (43-46 Celsius) in full sun. Never had a single problem with the battery system. I think what helped me is my Prius is white, my windows are tinted, I leave the windows down an inch to ventilate and I use a sun visor to protect the dash.

 

I keep wondering, how many of us actually read the Owner’s Manual?

 

How about the Owner’s Manual, Quick Reference Guide, Information Guide, Navigation System Owner’s Manual, Entune System Quick Reference Guide, Warranty and Maintenance Guide, New Car Features, Repair Manual, Collision Repair Manual, Electrical Wiring Diagram, Emergency Response Guide, Hybrid Vehicle Dismantling Manual, Toyota Warranty Policy and Procedures Manual, and Electronic Parts Catalog, plus all the bulletins and miscellaneous documents, and most of those again for the European and Japanese models?