You would fix it by replacing the instrument cluster. The speedometer itself may not be faulty, it is more likely to be a problem with the speed sensor.
It is not repairable, you should replace the instrument cluster.
Replace the instrument cluster.
You need to determine if it's the speedometer itself that's faulty, or the vehicle speed sensor. If the speedometer is faulty, you'll need to replace the instrument cluster.
You can't fix it till you know what's wrong with it.
Most likely speedometer cable
Have you checked the rear hatch glass ?? Open it and reclose it firmly.
There is no way to change gear ratios.
w to fix speedometor on 2000 rav4
Stop driving it
Good luck, I've got the same issue
These parts are only fixed by replacement.
Try replacing the speedometer switch on the transmission.. that's probably your culprit.