This is a quick snapshot guide on how to adjust the transmission liquid in a Toyota Sienna. This will certainly go over the typical drain and fill procedure to flush the ATF in the transmission.

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Things come Know before You Start

Before beginning, it is same to point out that according to the Sienna owner’s manual, under normal driving conditions, the is not crucial to change the automatically transmission liquid (ATF)…at all. It also says so on the ATF dipstick.


Of course, this begs the question, what room ‘normal control conditions’?

Maybe it is much easier to explain abnormal driving conditions… this would include driving that is particularly hard on a transmission, such as frequently driving in like the mountain terrain, towing hefty loads, or safety inordinate quantities of time in stop and go traffic. These sorts of conditions reason extra wear and also tear ~ above the internal contents of the transmission and also the tiny bits of material that space worn off end up in the infection fluid. As soon as you examine the ATF level and condition, if you see really dark liquid or small bits floating in the fluid, it is more than likely a an excellent time for a change.

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Another point to point out is the this drain and also fill will certainly not remove all of the ATF from the system. In fact, much less than half will drainpipe out. So for a more complete flush, you may need come repeat this process after driving the vehicle about 100-200 mile or so. In this way, it is no a true do the washing up (which Toyota discourages), fairly it continuous dilutes the ATF v fresh fluid, so the after 2-3 drain and also fills, it is mostly fresh fluid.

Okay, therefore let’s i think you have actually checked your ATF level and also condition, and determined that the fluid should be changed. It s okay then, let’s acquire started!

Tools and also supplies needed:

rag for wiping up

Drain and also Fill Procedure for a Sienna

These space the actions that will certainly be spanned in this snapshot guide:

Warm increase the vehicle for at least 15 minutes.Turn off the vehicle.Allow the ATF to drain into the drain pan.Pop the hood and remove the dipstick.Replace the dipstick.

Detailed Step-by-Step ATF Replacement

The very first step is to carry out some ready work. It have the right to be handy to know specifically how much fluid you end up draining indigenous the transmission, so the you know precisely how much you have to add. If you have actually a nice i graduated container of part sort, use that. If not, you have the right to make your own with a gallon ice-cream bucket or milk jug. Fill it with a quart at a time, then mark the next of it through a Sharpie.


Also, before you drain any fluid, make sure you have actually the exactly amount the fresh liquid on-hand. It will take about 3 1/2 come 4 quarts. At the time of this writing, a instance of 6 qts price the exact same as 4 separation, personal, instance qts, so the is what i bought.

Okay, once you have actually the supplies, we’re prepared to move on to the following step, which is to get the auto warmed up and also the transmission liquid well-mixed. So take it it because that a drive of at least 15-20 minutes or so, making certain to go through all of the gears, consisting of reverse. Then, park the vehicle on a level surface, revolve it off, and set the parking brake.

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Next, crawl under the front finish of the vehicle and locate the transmission fluid pan, presented in the complying with photos, and find the drainpipe port. It has a 10 mm hex plug, as shown.