2005 Prius - after ECU replacement, car won't turn off... electrical problems

Could you make a video of how the process of starting your car is going? Descriptions are sometimes subjective and do not contain some important points.

 

Thanks for the video.
The question arises - when replacing the ECM, did you program the key fobs to the new ECM?

 

Have you tried connecting the ECM that was removed?

What are the part numbers (10 digits) on the new ECM and the old ECM?

 

I see a problem with the immobilizer.
When I tried to enter the car with a discharged battery and a battery in the key fob, the color music started on the dashboard + the siren from theft was turned on.
Options - your key is lost, the battery of the key fob is discharged, the 12V battery is dead. It may also be that the new ECU is damaged.

 

Check the operation of the key fob without a radio channel. Insert the key fob into the socket to turn it on.

If you have two keys, check them both by inserting them into the slot in the same way.

 

Try the following to try to turn the car off with the 12v battery connected:
1. Do not step on the brake.
2. Push and hold the power button for about 10 seconds.
3. If that did not work, again push and hold the power button about 10 seconds.

Any luck?

 

Floating defects are usually defects of contact groups, which are covered with corrosion due to humidity and aggressive chemical environment. There are breaks in wires, the cores of which can connect and disconnect due to temperature changes or shaking of the car.