warm weather prius will not start. Stranded every day for hours till weather cools

"Vehicle with smart key system: The indicator light flashes after the "POWER" switch has been turned OFF to indicate that the system is operating."

I have noticed that my immobilizer light will not blink when it has the no start issue. usually when the key is out the light blinks but when it won't blink.... it won't start.

This is happening daily and Im frustrated. I have checked every fuse
I have replaced battery
I have inspected immobilizer ecu and it appears fine.

sometimes when I get in I see the immobilizer light blinking and I think "yes its going to be ok" and then I try to start and it like shorts out, the light stops blinking when the key is out and will not start..... i have to wait till later in night when car cools down and it'll start

Im extremely frustrated and unsure what to do. everything seems fine otherwise and as long as car is running, it has no issues and as long as the time when I turn off is not to long, it'll start

 

thank you for your reply. I have checked voltage to both and not are good.
Ive heard of the inverter pump issue and my only concern as to why it may not be that is that immobilizer light blinks when the key is in and it will start but when it does not start, the immobilizer light is not blinking anymore before putting the key in. and sometimes when I see the light is blinking and insert the key to start it makes a faint sound as if it shorted then I have to wait till the sun goes down and it'll start again.

so you still think that could be it?

 

I don't have the sks key. its baffling.... Just to reference. I can drive it all day and make 13 stops and it'll have zero issues its after it sets for more than say 20 maybe 30 min that this happens, once the car warms up temp in side.

I can't reset the car... I've tried unplugging battery and it does nothing for it.

 

what concerns me is that i see that light blinking and it starts and if it is not blinking it will NOT start an then sometimes after it sets it'll blink but once I try to start some faint sound clicks and then it won't start anymore no blinking light... no start...

locks work everything works but it will not register key when that light is not blinking

 

thank you ill have it checked once it runs again. I did check the other day and had the following codes however.... I pulled many fuses and such to test everything so some may not be legit.

C0200
c0205
c1234
c1241
u0073
u0293

Again, thank you very much for replying... this is a nightmare

 

I got it used and yes potentially it has as thefront bumper looks a little off. nothing structural though.
is that in the trunk?

 

again it 100% correlates to when that light is not blinking it won't start. would the hv cause that light to not function. it may not be the immobilizer but it appears to be something that at least communicates/ energizes it.

 

Ill check it in a min. thank you

 

ok so I was getting everything out and i hit my lock button and.... it started blinking immediately so I hit unlock and it was still blinking still thus I tried and it immediately started. does this make any sense

 

no definitely not. I look and unlock it when its like that it never fixes it but it seems once whatever is causing the issue goes away.... hitting the fob, resets that light.

I think you may be right on that blower motor. I don't have that tester they talk about but I tested resistance of blower and it was erratic but settled below the recommend 9 ohms

I further tested the blower motor connecter to the body ground and it showed nothing. not even a connection but the car is off.... does that matter

 

do you know if that blower runs all the time? Cause not seeing any resistance scares me. I would like to see if it is actually getting any power.