Overheat and power decrease issues

[Urban_P]

Been out on a road trip last week and was supercharging at a place 150km from home, about 15%->90% SoC. Having driven about 10km after SuC, and while overtaking, I get a sudden loss of power and warnings about "reduced power, okay to drive" and "Reduced power, try turning car off and on". (Codes dir_a103 and a126) I barely limped back home having been on call with Tesla who said it was okay to continue. Once home I plugged in my wall charger and let it charge but after an hour or so got a message that charging has stopped and that "car system overheated". Error codes are pcs_a078 and a007.

Have booked a mobile service appointment for Thursday next week but I'm curious to hear thoughts about what could be going on!

Oh, and the car is a SR+, and the error descriptions are my own translations from Swedish.

 

[Dvdarb]

Had exactly the same issue this Monday. Also SR+ with 2020.40.8. Turned off computers overnight and the issue haven’t did not show up again. Meanwhile updated to 2020.40.9 in the next morning.

 

[Urban_P]

Interesting. My M3 is now at Tesla service center awaiting spare parts. Clearly something it wrong with the regulation of battery temperature because during the 30km drive to Tesla SC the blue cold battery icon was lit which I think means it can't heat the battery, and again power was reduced. Supposedly they are finishing on the 11th so remains to be seen what they have done to fix it. Luckily got a loaner Model S in the meantime.

 

[XLR82XS]

Definitely sounds like a problem with battery thermal management. Good luck.

 

[Dvdarb]

Só apparently my had the coolant level a bit low, witch seems strange but...ok. Some Model 3 rolled out of production line with this issue.