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Trailer Hitch Installation - 2015 BMW 3 Series - Curt

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How to Install a Trailer Hitch on a 2015 BMW 3 Series


Today on our 2015 BMW Three Series we're going to be taking a look at and installing the CURT Class One Inch and a Quarter Receiver Hitch, part number C11367. As you can see we have our hitch installed. It's going to be nice and tucked away underneath the back side of the vehicle. You're going to have that inch and a quarter by inch and a quarter receiver tube capable of carrying up to two hundred pounds of ton weight and a trailer with a gross weight of two thousand pounds. It's going to have those nice tie downs for your chains on either side. With a half inch hole drilled straight through you're going to be able to slide in your pin to secure your trailer to your receiver. From the center of the hitch pin hole to the outer most edge of the bumper is going to be about three and a half inches. From the top of our receiver tube to the ground is going to be about eleven and seven-eighths inches. With these dimensions they will help you in selecting cargo carriers or bike racks for the back end of your BMW. Now, let's go ahead and take a look at how it installs. First thing we're going to need to do is going to be opening up that rear trunk.

Once you have the rear trunk open, then we will go ahead and go over to the tail light assemblies to remove the covers. Locate the screws, and then thread them out. You can use a flat head screwdriver if you choose, or standard screwdriver. Then just help you thread them out a little bit easier. Once you have the plastic screws removed, go ahead and set them off to the side.

We'll repeat this on the other side as well. Now go ahead and pull off the cover to expose the tail light assembly, placing that cover off to the side with the screw that you pulled out. We'll repeat that on the other side as well. Now with the ten millimeter socket we'll go ahead and remove the tail light assemblies. With both of those removed we'll repeat that same process on the other side. Go ahead and remove the tail light assemblies. You want straight back and out just like so. Locate the wires and go ahead and disconnect them.

Press in the tab here and pull out. With them disconnected go ahead and remove it from the housing and set the wire off to the side, placing the tail light in the back of the trunk, or wherever you see fit. Grab the tail light. Pull it straight back and then disconnect. Remove the wires and set them off to the side. Now with the same socket that we used to remove the tail light assemblies, we're going to go ahead and un-thread the two bolts located on top of the bumper. Go ahead and repeat that on the passenger side.

Pull it out of the way and set it with the rest of your hardware. On the passenger and driver side located inside the wheel well we will need to remove the screws that fasten into the bumper, since we do need to remove the bumper for this installation. Use an eight millimeter socket to do so. They'll look like that once you pull them out. Now, let's go ahead and repeat that same process on the driver's side. On the bottom side of the vehicle we will then have three of the same fasteners that we're in the wheel well on each side totaling six, as well as three star bits here in the center. We'll need to remove to unfasten the bumper. This is going to be a key twenty torque bit to remove these three on the back side. There's one out of the way. Let's get these other two. For easier access to the heap-shelled 00:04:09 bolts that we need to do next we're going to need to drop down the exhaust. First step in doing so is going to be to remove the connector here to the exhaust sensor. Press in the tab and pull down on it. Once you have the exhaust sensor removed, then we'll locate the exhaust hangers and remove those, too. There's going to be one here on the driver's side and one in the same place on the passenger's side. Just for safety we'll go ahead and place a cam buckle strap just around to protect the exhaust from falling down too much. Find a good solid point in the center to go ahead and mount that cam buckle strap to. Go ahead and place it on the lower arms here, just to give us enough support that we need. Let's go ahead and hit that with a little of spray lubricant. That way it'll make it a bit easier to get it off. We'll repeat that on the other side. Now we'll use our flat bar to go ahead and push that exhaust hanger out of the way. Once you have this side removed, let's go ahead and do the passenger side. Once you drop the exhaust down we can then adjust the strap if we need to to give us a little bit more clearance to get up into the inside. Locate the three bolts directly above the exhaust, and we'll go ahead and remove those so we can pull down the heat shield. With those three nuts out of the way let's go ahead and move to the four eight millimeter bolts that are here on the back side. Now we'll go ahead and pull down the heat shield and set it off to the side. Go ahead and remove the bolts here on the bottom side of the splash guard. Go ahead and remove the two eight millimeter screws here on the bottom of the splash guards next. Now, go ahead and pull the splash guard down and out of the way. Let's go ahead and repeat that same process on the other side. We'll go ahead and remove the two little clamps here that attach the exhaust sensor to the splash guard, just like so. Next step is going to be to locate the two T20 torx bits screws. They're located right here at the top behind the fender well matting. The screws are going to be similar to the ones we pulled off the back side of the bumper. If it helps you can use an extension to get to those T20 torx bit screws that are located up at the top of the bumper to disconnect it so we can pull it off. All right, now, it would be good to get an extra set of hands. Go ahead and start off by the wheel wells and pull the bumper back and off of the vehicle. Then we will need to disconnect the sensors located here on the back side. There will be a total of four. Once you have all four disconnected, then go ahead and set the bumper off to the side where it won't get scratched or damaged. Once we have the bumper skin removed, we will then need to disconnect the wires down here on the back side of the bumper. We'll just take a small flat head just to press in the lever so we can pull them out and away to disconnect them. Then press out the push clamp so that wire's away. Then the two here. Excuse me, three. Once we have those three disconnected we'll go ahead and pull them out of the way. We're going to go ahead and get an extra set of hands to help us remove the bumper, and we're going to use an eighteen millimeter deep well socket to do so. Remove the two bolts on top and bottom on both sides. We're going to reuse this hardware to place on our hitch. Now, we'll take our hitch and place it up over the bolts where we just removed the bumper. Go ahead and take your bumper and place it back over the factory mounting point. Slide it over the bolts and place on your nuts just to get them started and hand-tight. Now before we tighten down the bumper we're going to go ahead and reattach the wires. That way we don't forget about it as we get further in in the process. Go ahead and take the one that we pulled out of the center and place it back in until it clicks. Bring the other wires back around placing the thumb clamp back in and connecting the wires down here on the end. With all of our wires back in place, let's go ahead and move on to tightening down the bumper. Now we'll go ahead and torque down our bumper as it says in the instructions. We'll move over to the driver's side and repeat that same process. Now we'll go ahead and bring our bumper skin back up, reconnect the rear sensors, and put it back in place. We'll first connect all the sensors. Once you have all the sensors back in place, then replace the bumper skin into the appropriate slot. Slide in the driver splash guard back to where the hole located here fits over the screw there. Go ahead and reattach the thumb clamps that go here for the exhaust sensor. Place them up and through until they click in place. Once you've reconnected the two thumb clamps up top for the exhaust sensor, go ahead and leave it hanging until we get the exhaust back up into place. Now, we'll go ahead and reattach our splash guard on the driver's side making sure that all the holes line up, and then put the appropriate screws back in the holes. Go ahead and reattach the three eight millimeter screws to the bottom side. Go ahead and take your T20 torx bit screw and place it back up here where the bumper meets up with the body. All right, now we'll reattach our eight millimeter screws on the splash guard and back of the wheel well, and the two that go on up the side. Now we'll go ahead and take our three T20 torx bit screws that we pulled out in the beginning and place them back underneath the back side of the vehicle. We'll go ahead and place our nuts back on our heat shield, the three that we took off. We're just going to screw them back into place like so. Now we'll go ahead and place our exhaust hanger back over the hook and push it into place, just like so. On the driver's side we'll reattach the exhaust sensor and place the hanger back into place. Once you have it back into place we'll be ready to pull of the cam buckle strap that was securing our exhaust from falling. Go ahead and take your ten millimeter screws and place them back in to the top of the bumper. Repeat that on the other side. Now we'll go ahead and take our tail light assembly and put it into place. Make sure that you grab your wiring harness and you plug it back in before you do so. Making sure that it's nice and snug and not going to come off. Make sure the hole here and tab goes into the press point there. With the tail light assembly back in place let's go ahead and put our nuts back on. Now on the passenger side we're going to repeat that same process of plugging back in the wiring harness, placing the tab in the point there, and sliding the tail light assembly back into place. Re-thread in the nuts on the back side. Now we'll go ahead and take our covers and place them over the top to seal everything off. Placing the screw back into it's appropriate hole. Now just hand-tight with these plastic screws will be suitable. We'll repeat that back on the driver's side. Now you're ready to hit the road. That will complete our install on the 2015 BMW Three Series of the CURT Class One Receiver Hitch, part number C11367.


Jeff

7/12/2019

Never saw you reinstall the small heat shield. Is it not reused?

Etrailer Expert

Rachael H.

7/16/2019

The heat shield is not re-used, this is noted in step 2 of the attached installation instructions.

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