I have a 05 wrx starts fine cold runs good car drives fine up until I turn it off after it's warm it won't start nothing no crank I get all the dash lights and all just dosnt start not even crank over until the engine is cool after I wait a couple hours it was giving me a crank sensor cel I replaced it with a new factory one and still same problem anyone else experiencing this

 

For USDM cars they have a "clutch" switch plus security "starter cut" relay and a "starter interlock" relay in the circuit as below


Under this "warm condition" will the starter operate if these are bypassed with a wire direct from the battery to the starter motor solenoid??

 

more commonly the Camshaft sensor to be playing up in that scenario

 

Or the starter motor on its way out , i had that on an old vauxhall , the stater motor was fine the solenoid was the issue , it would get hot and not fire the starter motor , i had a small piece of metal and would short it , another thing to check when it does not start , rock the car in gear and see if it will fire up afterwards

 

So the car will bump start shouldvr mentioned starter was just changed and fuel pump i moght try the camshaft sensor

 

Anyone near Palmdale ca good at diagnostic I can't seem to find anyone to work on Subarus out here

 

It’s a bit rare but had similar issue

When it’s warm and won’t start, does it smell of fuel?

if it does could also be engine temp sensor to ECU not the Temp sensor to Gauge

basically it’s reading -128*c ( although gauge saying hot) and trying to start in VERY cold start mode(old school choke Fully on) when cars actually hot.

Tony