========== REPLY ==========
Had these problems. Have a certified transmission specialist (Not Toyota place) check your ECU. If that is the problem, check E-Bay and get one cheaper. The ECU is my problem. Mechanics cannot diagnose properly with the ECU working! After almost $400 of diagnostic checks, I have spent days on research and have a bid on E-bay for an ECU.
Hope this helps.
POSTED BY: MS. LEE - AUSTIN, TX, USA 15/7/2008