I was randomly Googling things last night and came across a Toyota engine idle relearn procedure on a Toyota site and YouTube. But then other sites say it doesn't actually do anything and it should learn by just driving it or removing the negative battery cable. Anyway, does anyone actually know if this is legit? 1. Get car up to operating temp 2. Shut off 3. Turn to on 4. Shut off 5. Turn to on for a few seconds then start 6. Put ebrake and brake on and idle for a few minutes while in drive 7. Done! Supposedly a common issue is idle for Toyotas after battery replacement and in general?!?