tonyxs

The mechanic check the Solenoid C (No.3), and looks good. We can hear 'click' sound when apply power, and no air go through when apply the power. We also check the battery. It has 12 volts and no problem to start engine. But it needs to be replaced. Is it going to be issue of it? Cause it still has 12 v on it. Also the error code is P0715 now of 'Check' engine light on, instead of P0763, a little bit strange for me. Thanks for help. Tony

We do use Toyota ATF IV fluid, but not sure about filter. Probably not genuine filter. I think mechanic used power flush to flush the fluid. Now the error code of 'Check' engine light on is P0715, different from previous P0763.

I have LS400 98, with 66000 miles on it. It all started a couple of weeks ago with 'Check' engine light on and off, then consistent on. Reading the code, it is P0763 - shift Solenoid C malfunction. So I had mechanic take down trans pan and check the Solenoid C. It seems working. So we flushed the transmission oil and replace the oil filer. The light is off at the beginning. But it is getting worse. The transmission gear malfunction sometimes when the car stop then go, or from reverse to forward. The gear is not binding at the beginning, unengaged like at ideal, then give more gas, gear get engaged when you feel the car jerking a little bit. Sometime, I can feel the gear is engaged on and off, on and off, when I just stop at light with my feet step on break and doing nothing. Now the 'Check' engine light on again. I am frustrated of it. It seems OK before I changed anything, just 'Check' engine light on. But getting worse after I flush the oil and with new filter. Any suggestions? Thanks. Tony