dealer said 90% bad ECU, 10% shift solenoid. ECU replace at dealer $1860.. got code from auto zone, P0756 shift solenoid S2 blocked oil passage, stuck open. tranny shop took 2 days to confirm shift solenoid, changed out shift solenoid #2 35240, still have problem.. now they say it's ECU, rebuild my ECU $500.. what to do??!!

 

Pay the $500 and rebuild ECU. You can maybe check ebay and see if they have ECU's on there. How do they even determine there is a fried ECU?

 

he test the ohm on solenoid sad it was good.. just found out ECU is sealed, can't rebuild.. I don't think tranny guy knows. found one on tomsforeign.com for $300 lifetime warranty..

 

Awesome, go for it!

 

you think so? know anyone that can merry new/used ecu to car? man if this doesn't work, what next? thanks

 

$300 is a great price! I'd do it lol.... that's pocket change compared to what you'd pay for a new ECU.

 

Lexus of south Atlanta have brand new for $1,100.. remove/install and go? Do I need dealer to marry ECU to car?

 

I don't know what you mean by marry the ecu to the car.... If it's the same model, it should be PnP

 

Im not sure if the vehicle ecu controls the transmission or if there is a separate ecu for that. If the main ecu, most likely you will need to take it to the dealer to reprogram as I am sure theres alarm and key coding and many other vehicle specifics are needed for your car to fire up.

Try mounting the used ecu and see if it start or not, if not leave the old one until you arrive at the dealership this way you will not have to tow your car

 

Sent out ECU for repair per tranny guy, ECU repair guy says perfectly fine, up to manufacture's specs.. Now the tranny guy say it's possible that it's the harness to solenoid. But before he said that the ohm's and voltage is fine from ECU to solenoid.. I'm fed up

 

Hello i was reading your story here and i have the same code comes up ones in a while but main problem is downshifting when coming to stop 2nd and 1st have jerking. Just wanted to know what did you do to fix your car i would appreciate your answer thank you

 

Hey!! Well, long story short.... It's the MAIN ECU.. nothing else... Don't let them con you into replacing trans.. I went through that.. But make sure it's done at dealer where you get lifetime warranty..

 

I went thru the same thing!

 

Hello i am haveing the same issue on my gs300 i was woundring if you got your ecu repaired because you mentioned repair will cost $500 if you did where?

 

send out to trans shop~