Oddball series of error messages on cold morning

jerrymildred said ↑

schja01 said:
The charge door has a solenoid so it could be affected.

Actually, it's just a spring loaded pin under a rubber boot. Works just like the stereo cabinet doors that you push and they pop open but it activates a switch that monitors its position. So, yes, they can get gummy in cold weather, I suppose. But that would most likely lead to the door not popping open. The switch not knowing the door is closed might take some investigation of the visual variety.

What you say may be true if you're not in range of a key FOB. If a FOB is within range there is a definite "clunk" when you open/close the charging hatch. If that's not a solenoid it sure is doing a pretty good imitation of one.

J

 

some of the components are:
The Lock 7703047060
https://wholesaledirect.moderntoyota.com/oem-parts/toyota-lock-7703047060

Drive Motor Battery Pack Charging Port Door - 5840947020
58409-47020 Genuine Toyota Lid Sub-Assembly, Batter

Drive Motor Battery Pack Charging Port Door Release Switch G90F047090

2021 Toyota Prius Prime Drive Motor Battery Pack Charging Port Door Release Switch - G90F047090 - Genuine Toyota Part

Dash Lamp Assembly - Indicator 8185047040

2020 Toyota Prius Prime Lamp assembly, indicator. Electrical, fcv, converter, charger - 8185047040 - Genuine Toyota Part



I went more for better pictures of the parts than actual fitment to the 2018

 

Two separate things. The locking pin has the solenoid. The opener has the spring and is behind the "n" in "pin" in the picture below.

 

OP had no issues with the charging port door. Perhaps the G90H0 indicator assembly was malfunctioning, but it was more likely a low 12 V battery. Here is the full component list.

DC/DC CONVERTER & CHARGER (EV OR FCV) | 2021 Toyota Prius Prime | Toyota

 

I was just addressing what it might be if it was not caused by the obviously low 12V battery. You're right that it really was probably the low 12V that was the culprit. Especially since @John roden hasn't reported any repeat events since charging his battery.

Glad you brought it back to the main issue.