2003 BMW 330i Automatic Transmission Reservoir to Radiator Coolant Hose Connector URO 17 11 1 707 817

What's up guys? I'm Andy from 1A Auto. In this video, I'm going to show you how to replace this coolant hose connector in this 2001 BMW 325 XI. If you need this part or other parts for your vehicle, click the link in the description and head over to 1AAuto.com.

With the trunk open over on the right side or the passenger side, there should be a cover that goes right here. This vehicle doesn't have one, but you're going to want to remove that cover. The battery is located right here. The first thing I'm going to do is take a 10 millimeter socket and a ratchet, loosen up this nut for the negative terminal; and that's loose. Slide off the cable, slide it out of the way.

I'm going to take these push pins out right here. I'm just going to use some side cutters, get this center pin, pull that up, and then slide it out. ... Be careful not to cut that. Get those out. Grab this piece, and slide it out. We're going to disconnect this connector right here. Push down on that, slide that out. There's another connector right here. I'm going to slide the wiring out first just like that, and then the connector will come out. ... Just slide that to the side like that. I'm going to take a T25 and a ratchet, and take this screw out right here. ...

I'm just going to use this trim tool from 1AAuto.com to take this push clip out. Get in there, pull that out. All right, now that is loose, but what we need to do is we need to take the fan off because the fan has to come out with the shroud as one. What we need to do to take the fan off is we need to disconnect the fan clutch from the engine side. This is attached to one of the pullies right there. Sometimes these are somewhat difficult to get off, so what we're going to do is use this tool. We actually sell this at 1AAuto.com with many different sizes. This happens to be the 32 millimeter, and that's going to slide on there. Then we slide this on, and with a pneumatic air hammer, we're going to give it a couple bumps. It's going to loosen up that nut, and we should be able to get it off.

Alright, so now I'm going to take the tool ... Now this fan clutch happens to be on a reverse thread. It's going to seem like you're tightening it, but you're actually loosening it. We'll go like that. Put our air hammer on there. Make sure you wear hearing protection and eye protection. ...

Alright, so that's loose. It took a little bit of effort, but I got it. Now you can slide the tool off. We'll just move it a little bit. There we go. You should be able to just spin it off like that. You might need the tool once in awhile, or you could use a wrench that fits, a 32 millimeter wrench. All right, now I'm just going to keep loosening this up. Be careful. You don't want the fan to fall. You don't want it to smash into the radiator, especially if you're going to reuse the radiator. If you're replacing it, it's not a big deal. As I get closer to the end, I'll just move the fan and just grab the blade, and there we go.

Now I can slide this right up, just like that. Just going to disconnect this connector to the mass air flow sensor, push down on this tab. Wiggle it out. Take a straight blade screwdriver, loosen up this clamp right here. Should be good. You can push that snorkel off right there. There's all these clips. Pulling the top of the air box off, I'm just going to take the top off. This last one over here, I know it's tricky to get to. Pull the dipstick out of the way, and just grab the air box. Pull the air filter up.

I'm going to take these two bolts out and use a 10 millimeter socket extension and an electric ratchet. You can use a regular ratchet if you don't have an electric one, or an air powered one. Loosen them up, take them out. ... Now, just grab the air box. Slide it up. This wire is on that. This little grommet right here, I'm just trying to slide that out. Just try to slide this off. All right, take that off, and you can just slide this out of the way. I'm going to pull this fill cap off before we drain coolant. Make sure the engine is cold. You don't want to take this off while the engine's hot or you're going to get splashed in the face with coolant. Pull that off, and now we can raise the vehicle and drain the coolant.

Underneath the vehicle, there may be a cover right here. You're going to have to remove it. There should be some fasteners there, there, there, and there, and then also back there. This vehicle doesn't have it, so we're just going to start right here. I need to loosen up this drain right here. This radiator is not the original radiator, so I believe you're going to have a different size socket to use if you have the OEM radiator. For this one, it's a 22 millimeter socket, and you use an extension and a ratchet. Loosen this up. Make sure you put a drain bucket underneath. I'm just going to remove this. There we go. That coolant looks nasty. To help the coolant drain out a little faster, I'm going to open this bleeder screw right here. Just use a straight blade screwdriver. Loosen this up.

Alright, I'm going to test this coolant. Let's see how it does. What we do is suck up some of this coolant. This is going to test the level of protection you have. With the tool level, this is actually way out of spec. It should be right there around negative 35 degrees Fahrenheit. Negative 32 is ideal, but this is way out of spec; so it's a good thing we're going to drain and fill this coolant.

All right, now we want to remove this side from the radiator. I'm just going to take a straight blade screwdriver, slide up under this retaining clip right there and then there's also one right here. Just like that. I can just grab this hose, and just wiggle it a little bit. ... Alright, pry that off. That's good. Now we'll take the screwdriver, and just take this hose off completely. Slide the clip out, just angle this back and forth and pull it up. There's a screw right here. I'm going to use a T20 socket extension and a ratchet. Take that screw out. Now I can move the radiator out a little bit, and we're going to take this screw out. Now, if you weren't taking this section of the radiator off and you were just doing the reservoir, you can loosen up the bolts on the headlight and move the headlight forward. Then you might be able to gain access to that screw right there. We're going to use a T20 on this screw. Take this one out. Pull that screw out.

I want to pull this coolant hose off. Just use a straight blade screwdriver or a pick. We just pull up on the retainer clip and then just wiggle it off. There we go. Pry that out. A lot more coolant came out. Make sure you still have your drain bucket underneath there.

Now from underneath the vehicle ... You don't necessarily have to be from underneath the vehicle, I just wanted to show you how this worked. There's a little lever right here that you can actually grab from above the vehicle. You just pull it towards the center of the vehicle just like that, and that releases the lock that holds that in. Now that clip is released. Now we're just going to grab the tank and slide it up. The coolant sensor is still down there. We'll have to disconnect that, but I'm just going to grab the tank and just pry it straight up. Be careful. You don't want to rock it back and forth too much because you could break other plastic. Just pull it up just like that. You're going to have some more coolant come out, just slide it up. You slide it up. I can disconnect the connector right here. Push down on the tab, and pull it out like that.

We're going to pull this cooler out of our way. This little tab right here, pull up on this tab just like that, and you should grab the cooler. Just slide it out. Be careful. You don't want to wiggle it too much because you might break some of the plastic, some more coolant's going to come out when you take this off. There we go. This is another hose right here. We just want to get a pick underneath the retainer right there, see if we can get that ... get this loosened up. I pulled the clip up by accident. That's okay. I'll just put it back on after. Now I should be able to grab that hose, slide it off. All right, I'm just going to slide this up out of the way just like that. Put this right here, you can grab the hose, and just pull that off just like that.

Here is the old part. Here's the new coolant hose connector from 1AAuto.com. It's machined the same way. It has the same container that holds it in position. The holes are machined the same Way. Get yours at 1AAuto.com, and you can do it yourself. ...

I want to put this clip back on. We'll put this clip back on the hose first. ... All right, so that's how we want it to go, just like that. Take this piece, I'm going to attach this hose first. There is some tabs to line it up. That's good. Slide this down here. You could position this in here first, and then hook that line up if it's easier, put that hose up. I just slide that in position right there, just like that. If you struggle getting that in, you can take the screw out for this bracket right here, and then it'll slide in a little bit easier.

Now take the cooler, just check the O-rings, make sure the O-rings look okay. These look OK. It's recommended that you replace those O-rings when you're doing this. We'll slide that in position, and lock it down. Just double check to make sure that's locked in good, and that looks good. Now take the new reservoir, I'll plug this connector in right here; the level sensor. .. Slide this in position, and just push down slightly and lock it in place. All right, that's good, and lock it down. Take this hose, line this up, and lock it in place just like that.

Take this screw right here. It's just easier to put this on before I put the hose on. Get that started. You take a T25 extension and a socket, tighten this down Just snug. It is in plastic, so be careful. Alright, take this pipe, this upper hose, and just line that up right there. Lock it in place. Then over here, line this up over here, and just wiggle it a little bit. Lock that in place, make sure this reservoir is locked in, too. That's good. These have to go on together. Just slide this in position.

Once you get this close, I'm going to start to tighten up the fan. Now, these fan blades are ... the fan clutch is reverse thread, so it's almost like you're going to be loosening it. There's really no easy way to do this. Just do it carefully. Once you get it started, it's a little bit easier. Make sure that fan shroud is in properly. ... That's good.

Alright. If you have the ability to torque this nut for the fan, you're going to torque that between 22 and 29 foot pounds. I don't really have that ability, so I'm just going to put this tool on there and just give it a little tap. That should be good. Right here. There's a push pin that's going to go back in here. Slide that in position, and lock it down. On this side we're going to put this screw right here. I'm going to use a T25 and a electric ratchet. Tighten this down. ... Just snug. I'll position this wiring harness right here, and we'll plug the connector in right here. Lock that in place.

Now we're just going to slide this side of the lower air box in here. Yours may have something that this connects to. This vehicle doesn't. It just slides in position and then this lower part slides there. Make sure these holes are lined up, take these two bolts. Get these started. Take a 10 millimeter socket and a ratchet, and tighten these down. I'm using an electric ratchet. If you don't have an electric ratchet, just use a manual one. ...

Take the air filter and install it. I'll take the top part of the air box, going to slide it onto the snorkel first. Just like that, and then there's all these clips. Take these clips, lock this part down. Connect the mass air flow sensor, or air flow meter. I'm going to slide this clamp right here. Take a straight blade screwdriver and tighten it down. Just snug, not too tight. Give it a shake. Make sure it's good. Take this piece, slide this into the air box, just like that. There's retainers right here. Take those push pins, and lock them down.

Now we can take the negative side, connect the negative side. Take the same 10 millimeter socket and ratchet, tighten it up. That's good. At this point, if you had that cover, you're going to want to put the cover back where it goes.

When adding the coolant. We're going to use a funnel and you want to make sure you add the appropriate type of coolant. You can check your owner's manual. There is BMW specific coolant. Generally it's blue coolant. We're going to add ... We're going to fill up the reservoir. We're going to take this bleeder screw out. Just use a straight blade screwdriver or a Phillips head, just move that funnel. You could probably just loosen this up a little bit, or you can take it all the way out just like that. Set it aside.

You want to fill this all the way up to the top and have coolant come bubbling out of the bleeder hole. Once it's coming out of there, we're going to re-install the bleeder screw. It is plastic, so be careful. You don't want to strip this. Get this started again, then close that bleeder screw, and then you're going to adjust the level in here. Now there is a little dipstick in here. When this is full, this is going to be all the way at the top. Now you can check it right here. It shows where the min and the max is, so you want to adjust that accordingly. You can add coolant or take out coolant. You can use a turkey baster or some type of fluid pump to suck the fluid out.

Then you want to let it run. You want to leave the heat on. When you leave the heat on, if you don't have heat, you're going to want to crack this open a little bit and just make sure you get some of the coolant out. It's probably a good idea to shut the engine off, let it cool down and readjust your coolant.

When you're done, when the fluid levels at the appropriate level, take the cap, put it back on. Make sure you monitor your temp gauge while you run in the vehicle. If you run the vehicle for about 10 minutes, the temp gauge should go right in the middle of there. If it starts going to the red, shut the vehicle off and start over. Bleed the system again.

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