2020 Nautilus rear sunroof drains

[reginakirk]

How do I access the rear sunroof drains? I have water pooling in my spare tire area and right back seat floor. If possible a video or diagram. Help!

 

[11MarkX]

I believe the drains are rails, not tubes, so open the sunroof and you should see the drain rails.

However, water could be coming in from your rear taillights which happens in some modern vehicles. The tiny gasket around the tail lamp is the only thing keeping the water out. Aviators had the same issue. If leak is really bad, sometimes you can see condensation inside the tail lamp.

 

[Alabamaspitfire]

How do I access the rear sunroof drains? I have water pooling in my spare tire area and right back seat floor. If possible a video or diagram. Help!

All of my seatbelts were wet along with what you have described. Back leaks. Still working to find the cause.

 

[Capt1njohn]

I am trying to find the rear drains on my 2019 Lincoln Nautilus too! Any help would be appreciated.

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[markfm]

Get a copy of the workshop manual, it'll likely be there. I know the runs are shown in the '24 manual (different vehicle from yours).

factorymanuals carries PDF copies of manuals (where I got the '24 Nautilus manual from), $60 with their standard 20% coupon code, though sometimes they pop up 25% off codes. The '24 document is huge, I chopped mine into smaller PDFs to be more useful.

 

[Capt1njohn]

I took the right rear wheel off and removed the wheel well liner and I found a hose. Traced it out and found it goes to the rear Diff. It is the differential vent. I was looking for a hose but it turns out there is what looks like a rubber grommet in the inner body floor directly behind or in back of the tire on the body side of the wheel well liner. Kind of under the tail light area. I was able to push a piece of string trimmer line up that grommet and through the hose about 56.5 inches and then it stopped. I pulled it back out and the trimmer line was wet and very dirty at the tip of it. Then I got my borescope camera the hooks up to my phone. I pushed it between the two pieces of rubber weatherstripping that the sunroof guide arms slide through. I pushed it through right near the back RH corner of the sunroof. I was able to see what looked like a drain hole but it hard to see and I couldn't get the string trimmer line aimed good enough to push it down through the hole. I got an air nozzle and set the pressure to 30 psi and blew up through the grommet at the rear of the car while the borescope camera was still down under the weatherstrippping. It didn't seem like it was blowing through very good, I went up to the sunroof and looked at the camera and there was splashes of water all around the area of what looked like a drain hole at the back of the sunroof guide slot. Then I tried pushing the string trimmer line up from the bottom at the grommet and It still only went 56.5 inches. I blew through the grommet a couple more times and then I got my basting syringe and filled it with water and injected water between the sunroof weatherstripping. then got down and looked behind the wheel well where the grommet was, Water was pouring out of it. I injected 3 more full 1 ounce syringe's full of water down the sunroof track and the water cleaned out the drain hose. Now all I have to do is check the front drains and make sure they drain and I should be good and dry again.