2002 Toyota rav4 automatic won't shift t 4th gear

SOURCE: replace bulb on automatic gear shift console

If the shift console is on floor then look for bolts holding it down.  Take out bolts and then you can maneuver console so you can see where light is plugged in and get the right light to replace it.  It will probably be a small light which tend to cost a bit more, but at least you'll have the light back.

SOURCE: 2000 toyota echo, transmission won't shift to 4th

First thing to do is check the fluid level if that ok you may want to think about having the transmission filter and fluid changed, there are other possibilities but check these first

SOURCE: 1991 toyota camry automatic. Transmission is fine

sounds like you may not even have a 4th gear. worst thing is you may need a new transmission. try putting in some "Lucas Transmission Fix" it's like $12 at Autozone.. If that doesn't help, take it to a transmission shop and have them check inside your transmission to see if you need a new transmission or if it's something that could be fixed. It may even be a sensor.

SOURCE: when I shift from 3rd to 4th and from 4th to 5th

the gearbox may just need a good service like a new filter and fresh oil,,, or it could be the gearbox velve block pistons sticking or worst still it may be the clutches slipping nothing can be done then unless you strip the gearbox and fit new parts but the longer you leave it slipping the biger the repair bill will be

SOURCE: rav4 toyota harsh shift

You have a faulty ECU which will need replacement. You may have damage to your gearbox now as a result.