Our 2010 Sienna was the last year of its body style. Toyota was transitioning to sealed transmissions but ours still has the dipstick. Toyota recommends in the owners manual to change it only if the van is used for towing. At 140k miles, it still shifts acceptably, but not as well as it used to, particularly when cold. I stopped at the dealer and asked what they charge to change ATF. He said that it wasn't anything that they do unless the car has transmission issues. And he wouldn't give me a price. (The transmission uses Toyota WS- world standard fluid)
So, what to do?
-Change 3 quarts via dipstick tube (I did this on my Buick successfully)
-take it to an independent shop and have it changed or flushed
-do nothing and keep driving
(We'll have the van for another many years and thousands of miles)
So, what to do?
-Change 3 quarts via dipstick tube (I did this on my Buick successfully)
-take it to an independent shop and have it changed or flushed
-do nothing and keep driving
(We'll have the van for another many years and thousands of miles)