Automatic Trans fluid change interval?

[charles nelson]

I own a Yaris with auto transmission. My local Toyota service manager has told me that I won't have to have the transmission fluid changed until at last 60,000 miles (100K km). I noticed that the Yaris engine does not have a 'dip stick' to measure the fluid level, either. Several forum members have mentioned changing the fluid once a year...but they never said how many miles.
Any consensus on how often or how far before a fluid change?

[CTScott]

Your AT Yaris does have a dispstick. If you do some searching there are a bunch of threads that discuss the changing process, that debate the interval, and that show pictures of the dipstick location.

[fnkngrv]

If you go with AMSOIL Synthetic Fuel Efficient Automatic Transmission Fluid Product Code: ATLQT-EA:

SERVICE LIFE

Recommendation for cars and light duty trucks
Specification
DEXRON® VI

Severe Service*
50,000 miles (80,000 km)
Normal Service*
100,000 miles (160,000 km)