How to Refill your Transmission Fluid 2010-15 Toyota Prius

Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!

Raise and support the vehicle to remove this under shield that goes underneath the engine and transmission. There is some 10 millimeter bolts here and two here. We'll remove those. Use a 10 millimeter socket, a long extension and my ratchet just so I don't have to reach up here, but you can use any length ratchet. These two bolts were so rusted they broke. There's plenty of plastic clips holding this tray on. Not worried about it. These bolts are also very rusty along here. One of them already broke.

I'm going to remove all of the clips and then fold the plastic under tray down to get it out of the way. We're going to leave these bolts in place, not touch them. If your vehicle's not rusty, they'll probably come out without a problem. This car's very rusty. They're going to break on us. I'm not going to bother with it. I'm just going to use a flat bladed screwdriver to release these plastic clips and pop them out. Once you get them started, you can use a trim clip tool. I've just along and found all the push clips holding this up. Somebody has already cut this to get them better access to the oil pan and the oil filter.

Normally, there'd probably be a door here you'd flip down. Ours doesn't have it. I'm not going to worry about it. There's one more clip here. I'm just going to take a bungee cord, just hook it to this. You can hook it to the front grille. It'll just help hold it out of the way.

This is your drain. There's a 10 millimeter hex key in it. Your fill is up here just behind the CV axle. This is also where you can check the level. You'd open up the fill plug and some transmission fluid should just dribble out. That would be the proper fill level. We did have the axles out of this car and we leaked some transmission fluid out, so we want to top off the level.

I'm going to crack this open, and I shouldn't have any fluid drop out because it should be low. Then we'll fill it until some fluid dribbles out and then tighten it and that's the proper level. If you wanted to drain most of the fluid out, you'd do it from here and then you'd refill through here until it dribbled out and then you tighten it up.

I'm going to spray just a little bit of rust finishing on there. I'm going to use a 10 millimeter hex key and a ratchet and a short extension, get it in place, and break it free. You want to have a drain pan ready to catch any fluid that might leak out. Get this out of here. There is a gasket on the end there.

I don't have any fluid coming out so that means that it's low. Use a fluid transfer pump of your choice. I'm going to use a suction gun type. You can use one that goes in the bottle and then pumps out. Fill this up. All right. You can see it dripping out so that's filled up.

Just reinstall the drain plug. Install the drain plug and just tighten it, not too tight, just till you feel it stop and that should be good. We'll clean it with some break parts cleaner so we can check for leaks. Reinstalling the plastic clips you took down to get the shield off.

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