This Week's DIY

[Blakethesnake]

Please keep me updated on the transmission service. I have just acquired a 2007 yaris automatic. Im unsure whether or not to service the trans. Some say yes. Toyota says no. Working fine and I don’t want to cause any problems. It has 120 thousands miles. My instinct says drain and fill a few times to rejuvenate atf. I have read alot of threads. And can’t make up my mind on this subject.


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[06YarisRS]

Originally Posted by Blakethesnake

Please keep me updated on the transmission service. I have just acquired a 2007 yaris automatic. Im unsure whether or not to service the trans. Some say yes. Toyota says no. Working fine and I don’t want to cause any problems. It has 120 thousands miles. My instinct says drain and fill a few times to rejuvenate atf. I have read alot of threads. And can’t make up my mind on this subject.


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I'm an advocate of changing the fluid. When I spoke to Toyota recently they recommended only a drain and fill. My Sedona doesn't really have a serviceable filter without cracking the trans case, so that one will only get drain and fills. The Yaris cars will both get a new filter and minimally 2 drain and fills. I don't believe in a 'lifetime' fluid no matter what a manufacturer says, since I expect that their definition of 'lifetime' differs from mine. I would at least do a drain and fill, maybe a couple. I like to do one, then wait a few days and repeat. Maybe conjecture, but I like to slowly 'condition' the trans to the new viscosity, rather that 'shock' the transmission with a big dose of new fluid. In any event, draining and refilling the ATF on the Yaris is child's play.