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hello, thanks for posting
The unresponsive gas pedal is due to the warning lights on which will cause the system to go to a fail safe mode limiting throttle angle opening. does the engine start up and run now? Does the check engine light still remain on?
Ok, thanks, ***** ***** thing I would suggest doing and you can do yourself is to test the auxiliary 12 volt battery in the trunk, it's best to have a shop check it or even autozone or O Reilly, they do a free battery check, it's possible that this battery is not accepting a charge anymore and may need to be replaced, especially if it's over 4 years old.
iN THAT CASE i WOULD SUGGEST HAVING A TOYOTA DEALER GET INVOLVED TO DIAGNOSE THE HYBRID SYSTEM BUT LET'S NOT GO THERE UNTIL WE KNOW ABOUT THE BATTERY, THANKS.