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Hi new to the forum i have a problem with my 2006 Toyota Prius with 130k miles i had the 12v battery replaced 4 months ago because I had the dashboard not turning on when starting the car. I drive about 200 miles everyday for work (deliveries) so the car basically is turned on all day.

Last week when I got home turned off my prius when I turned it back on later that night the dashboard would not turn on. Tried disconnecting the 12v battery and still no dashboard. Drove around like that for two days until Friday when suddenly the dashboard turned on and everything was fine.

Later that night I turned on the prius and the dashboard didn't turn on again, shut it off and turned it back on, dashboard turned on.

Now the big issue: The ICE does not want to turn on. Vsc and abs lights with the triangle of death are on. Code reader wasn't showing any codes.
I towed the prius to my mechanic so I wouldn't get stranded with only the electric motor running, he checked the 12v battery, fuses and relays. Moving the car around on his lot they discharged the hybrid battery. At first there were still no check engine light and no codes. Now the prius is throwing the p3000 code. I need some help since he isn't a prius specialist, my last resort is towing it to the Toyota dealer for diagnostic and repair.
 

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Today My mechanic swapped my battery and battety computer with one he had. Joy ICE started to run for about 3-4 minutes couldn't Rev it up, just low rpm charged up the battery until two green bars, shut off and didn't start again. Got a new code u0100- lost communication with ecm. Any takes what's causing this?
 

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Hello. I have a problem with the battery in the winter.

Hello. I have a problem with the battery in the winter. Quickly battery lasts. Battery 2 years. The first winter did not notice, and now has become noticeable. What do you advise?
 
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