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Old 02-16-2012, 12:50 PM   #1
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2009 Sedan Auto Transmission Oil Change DIY

anyone have a DIY manual on how to change tranny oil for the automatic transmission on a 2009 toyota Yaris ? (drain and fill) im just reaching 50k km and would like to change it.
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Old 02-16-2012, 03:37 PM   #2
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There are basically two ways to do it yourself:

1. Drain via drain plug and fill via dipstick tube - Remove the drain plug from the bottom of the AT (using a 10mm allen wrench). Measure the amount that drained (which will be significantly less than the total capacity). Refill that same amount via the AT dipstick tube. Run the engine until the AT warms up, then check fill level, via dipstick. When I do this method with a vehicle I repeat it two or three times over the course of a couple of weeks to attempt to replace as much as possible. Basically I am diluting out the old fluid by doing this.


2. Drain via drain plug and AT cooler lines - Same as above, except also disconnect the hoses that connect the AT to the oil cooler portion of the radiator (it is easiest to disconnect where the rubber hoses meet the steel tubing). This allows you to also drain the oil cooler and tubing, so you are changing a bit more of the fluid than with the drain plug alone. When I do this method I blow out the oil cooler using compressed air.


With both of these methods quite a bit of fluid remains within the valve body and torque converter. Last summer I disassembled an automatic transmission to ship it to a YW member in Russia. Between the valve body and torque converter I removed almost two additional quarts of ATF.
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Old 02-16-2012, 04:05 PM   #3
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awesome, thanks for the info, ill get my mechanic to drain and fill it the first option. and ill do it 2-3 times to clean out the fluid. my mechanic says to never do a flush. it has 45k kms on it now, i plan to change AT every 50k (better safe then sorry especially when it comes to transmission and engine oil).
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Old 07-28-2012, 10:00 AM   #4
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I just changed mine Yesterday at 50k miles. I ordered a new drain plug and gasket. The gasket is NOT the same one as the one used for the oil changes. It's white aluminum and has a larger diameter hole punched out in the middle. Also I was able to use a 3/8" allen wrench that I luckily found in my Dads garage so I didn't have to buy a whole set. I slid a floor jack handle over it since the allen wrench is way too short and the plug was on TIGHT! The fluid comes out burning hot be sure to wear gloves. I got exactly 3 quarts out of my car. I added 2.75 quarts to allow a little room since I though the factory fill may have been a wee bit high. I bought 4 quarts on Ebay for $40 shipped to my door. Saved the trip/gas to the dealer and no tax. The fluid that came out sure wasn't nice and red and transparent like the new stuff. It was dark and ashy purple in color. I can't imagine never changing it for the life of the car like Toyota tells you on the dipstick sticker. I filled it back up through the dipstick hole with a handy plastic tranny funnel that has a clear hose on it so you can monitor the fluid flow.
It appears that the fluid level changes from when the engine is stone cold in the morning to when it's hot. Also when checked hot with the engine running it goes down even more. The owners handbook totally ignores the A/T and doesn't even tell you how to check the level or where the A/T dipstick is!
Overall, this isn't hard to do...
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Old 04-09-2013, 09:15 PM   #5
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Hey guys,
What type of tranny fluid does the Yaris take? Thanks.
Richard
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Old 04-09-2013, 09:17 PM   #6
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its ATF WS
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Old 04-09-2013, 09:18 PM   #7
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Quote:
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Hey guys,
What type of tranny fluid does the Yaris take? Thanks.
Richard
Toyota ATF WS only (so says Toyota).
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Old 04-09-2013, 10:01 PM   #8
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It not cheap either...
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Old 04-09-2013, 10:52 PM   #9
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Thanks, is it necessary to drop pan and replace filter?
Just did some research and looks like about 9-10 bucks a quart.
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Old 04-09-2013, 10:54 PM   #10
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Quote:
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Thanks, is it necessary to drop pan and replace filter?
Just did some research and looks like about 9-10 bucks a quart.
Theoretically it isn't necessary to do the filter, but dropping the pan to do so also lets you see how much the magnets have picked up.
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Old 04-09-2013, 10:56 PM   #11
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Scott, do you recommend it at 100k?
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Old 04-09-2013, 10:58 PM   #12
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Scott, do you recommend it at 100k?
By 100K I would definitely change the filter.
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Old 04-09-2013, 11:00 PM   #13
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Scott, that's what I thought also. Thanks for the confirmation. Is it a tough job, besides being messy?
Richard
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Old 04-09-2013, 11:05 PM   #14
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Scott, that's what I thought also. Thanks for the confirmation. Is it a tough job, besides being messy?
Richard
On the Yaris it is actually a very easy job, since there is nothing in the way.
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Old 04-09-2013, 11:05 PM   #15
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O'reilly's auto parts has a filter kit for $16 with gasket. That's cheap.
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Old 04-09-2013, 11:13 PM   #16
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Scott,
If I choose to do the oil change 2-3 times to get most the oil out should I wait to change the filter on the last drain?
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Old 04-09-2013, 11:20 PM   #17
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Scott,
If I choose to do the oil change 2-3 times to get most the oil out should I wait to change the filter on the last drain?
That would make sense. That way you put the new filter in with as much fresh fluid as possible.
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Old 04-09-2013, 11:22 PM   #18
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Thanks Scott, have a great night.
Richard
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