I have never changed the transmission fluid because the Toyota service book does not include an interval at which to change it; I had no idea I was supposed to change the trans fluid until many miles past 60,000. Then I was told that it was risky to change the fluid because if the transmission has too much debris the changing of the fluid could actually cause problems. Also, all the service book says is that a mechanic should check the transmission for leaks.
At 90,000 miles is it a good idea to change the transmission fluid? on 2000 Toyota Echo
At higher mileage it is not a good idea to use a flushing machine to flush the transmission but it is necessary to change the fluid (I would do it every 30,000) and I would remove the trans oil pan and clean the filter it is not much additional work on your car.
1 more answer , 1 more comment
YES CHECK FOR CHECK FOR LEAKS .AS FAR FOR THE TRANSMISSION SERVICE GOES .GO AHEAD AN CHANGE IT PUT NEW FLUID IN IT AND ALSO PUT SOME PUT SOME TRANSMISSION ADDITIVES IN IT.LIKE SOME K&W STOP LEAK AND SLIP
Thanks to both of you, TT and Patrick.