I had to replace my battery a few weeks ago and at the time I wasn't able to find my memory saver (will never do that again). Ever since I've been having an idle and dying issue (was running and idling fine before battery was changed). I have performed the idle relearn process several times since then and even increased the time I allow it to idle in drive but with no success. I even tried disconnecting the battery again and staring from scratch. The battery voltage is 12.6 after sitting overnight and alternator output is 14.2 volts. Anybody have ant ideas?

 

Why did you change the battery in the first place?
I wonder if something got shocked during the replacement process. That is, if you weren't experiencing something before that prompted the battery change.

 

The battery was bad and wouldn't crank any more.

 

Describe the idle issue, the car starts but then is rough and won't stay running?

 

It wants to idle below 500 rpm and stalls at stops.

 

This sounds like your issue:

https://www.toyotanation.com/threads...ement.1657288/