Tonneau cover leaks

[stebb1174]

You guys are hopeless. I fixed mine in 20 minutes and my truck lives outside 24/7 in the PNW rain and snow. Before that it leaked waterfalls into the center of the bed, now everything stays completely dry. I keep cardboard boxes, tool bags filled with power tools, and lots of other non-waterproof stuff in the bed, nothing gets wet or soggy. At best, after driving through a hard rain, there is a little seepage around the top of the tailgate but it just runs harmlessly down the tailgate and out to the road. Even parking nose-up or nose-down on a steep slope doesn't seem to make it leak.

How did you fix it? The cat guy video? I tried that over the weekend but does not work I have a FS in 30k range and they changed it no foam and they filled with some gasket but does not work. I was going to try backer rod next.

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[EWELON]

Yep just pop something, anything either inside that gap between the glass and the aerocover or over it (or both i guess) and be done. “Vault” is a marketing term just like “Full Self Driving” don't take it literally.

all pickup drivers forever have had to deal with this and dont think that anyone (I guess except for santa fe drivers) really thinks that their truck bed can be expected to remain bone dry and non-dusty for the life of the truck.

 

[HaulingAss]

howdy fellow PnW! Did you do the fix from the video earlier with the replacement gasket? Just asking as I intend to fix mine as it lives like yours and am grateful for any advice.

No, I used the OEM foam strip that had two gaps in the middle of the run. Those two gaps are where I had two waterfalls into the center of the bed. I just pinched the excess foam strip from each end (where it wasn't needed) and pushed it into the gaps in the foam strip. They still had gummy glue on them and the pressure from the top aluminum cover holds them down.

 

[DFeredinos]

No, I used the OEM foam strip that had two gaps in the middle or the run. Those two gaps are where I had two waterfalls into the center of the bed. I just pinched the excess foam strip from each end (where it wasn't needed) and pushed it into the gaps in the foam strip. They still had gummy glue on them and the pressure from the top aluminum cover holds them down.

Oh sweet, thank you, I'll give that a shot and play around. Cheers!

 

[HaulingAss]

Oh sweet, thank you, I'll give that a shot and play around. Cheers!

I understand Tesla may use a different weather strip under the aluminum cover now. The one on the early Cybertrucks was a low density (lots of large closed cell air cells), easily crushable foam strip. It was not resilient and rubbery, it crushed easily. I think that was by design. It was translucent to a degree. I should have taken a photo.

My point is, if you need to replace the weather seal strip with something else, don't get something too thick or rubbery, it will cause the aluminum trim to flex (bow upward). Sometimes less material is more. Easily crushable is good.

 

[stebb1174]

Yep just pop something, anything either inside that gap between the glass and the aerocover or over it (or both i guess) and be done. “Vault” is a marketing term just like “Full Self Driving” don't take it literally.

all pickup drivers forever have had to deal with this and dont think that anyone (I guess except for santa fe drivers) really thinks that their truck bed can be expected to remain bone dry and non-dusty for the life of the truck.

Backer rod is working! Did a test and no leak this far.

Thanks for the tip!

 

[kpanda17]

Backer rod is working! Did a test and no leak this far.

Thanks for the tip!

What diameter? How did you get it through?

 

[stebb1174]

What diameter? How did you get it through?

Initially I went with 3/8 but when I literally stuffed it in it would pop out the new style weather strip on the aeroflap So I went with smaller diameters.

At least on mine there are two different spaces
Between the actual glass and aeroflap it's a lot tighter I used 1/8 inch and then the larger gaps at the two ends I used 1/4 inch. So far working well with my hose test.

Since I don't have a cybertent or really plan on getting one I may also apply some clear sealant/caulking underneath to really try and seal the deal.

Orgthin 20FT Backer Rod 1/8 inch,... https://www.amazon.com/dp/B0D6B4VRV2?ref=ppx_pop_mob_ap_share

Orgthin 20FT Backer Rod 1/4 inch,... https://www.amazon.com/dp/B0D6B54MZK?ref=ppx_pop_mob_ap_share

Good luck!

 

[EWELON]

Initially I went with 3/8 but when I literally stuffed it in it would pop out the new style weather strip on the aeroflap So I went with smaller diameters.

At least on mine there are two different spaces
Between the actual glass and aeroflap it's a lot tighter I used 1/8 inch and then the larger gaps at the two ends I used 1/4 inch. So far working well with my hose test.

Since I don't have a cybertent or really plan on getting one I may also apply some clear sealant/caulking underneath to really try and seal the deal.

Orgthin 20FT Backer Rod 1/8 inch,... https://www.amazon.com/dp/B0D6B4VRV2?ref=ppx_pop_mob_ap_share

Orgthin 20FT Backer Rod 1/4 inch,... https://www.amazon.com/dp/B0D6B54MZK?ref=ppx_pop_mob_ap_share

Good luck!

if you want a belt with your suspenders this might be cleaner than sealant:

https://a.co/d/7VUTGIQ

 

[stebb1174]

if you want a belt with your suspenders this might be cleaner than sealant:

https://a.co/d/7VUTGIQ

Nice I may do that thanks!

 

[EWELON]

Nice I may do that thanks!

now you can let me know how that goes and looks and tell me if it works as well as I hope it will haha

 

[matttn]

Update: Service center wanted to charge me $275 for the diagnostic testing for water ingress after they stated my vehicle was normal with the leak between the rear glass and aero flap. Ultimately they didn’t fix it and I wasn’t charged the fee.

I went ahead and used EWELON’s advice and stuffed 3/8 backing rod in the gap. I did run into a slight issue towards the far right passenger side of the rear glass and aero flap. The last 3-4 inches were too narrow for the backing rod to fit so I left it empty in that right side area. Did the water test and surprisingly water didn’t get in.

Thanks for the tip. So I think it’s really up to the service center and technician to whether they’re willing to change the sealing or not for the leak. I have a 2024 FS and definitely didn't have any seal within the aero flap.

 

[kpanda17]

Update: Service center wanted to charge me $275 for the diagnostic testing for water ingress after they stated my vehicle was normal with the leak between the rear glass and aero flap. Ultimately they didn’t fix it and I wasn’t charged the fee.

I went ahead and used EWELON’s advice and stuffed 3/8 backing rod in the gap. I did run into a slight issue towards the far right passenger side of the rear glass and aero flap. The last 3-4 inches were too narrow for the backing rod to fit so I left it empty in that right side area. Did the water test and surprisingly water didn’t get in.

Thanks for the tip. So I think it’s really up to the service center and technician to whether they’re willing to change the sealing or not for the leak. I have a 2024 FS and definitely didn't have any seal within the aero flap.

great news
Front at leading edge of aeroflap
Middle 1/8 backer
Each end 1/4 backer

what about the rear tailgate door gasket?
Yours does not leak any water?
Inserting backer inside the gasket hollow tube to make it a tighter seal?
Which backer size?

 

[BrickBungalow]

A strip of adhesive seal molding on the top and bottom of the tailgate interior keeps my stuff dry.

 

[Eka]

The cover itself is quite resilient to water, as there is little to no penetration between the slats nor at the sides. There is a little intrusion at the tailgate seal, but the real culprit is the gap between the tonneau appliqué and the roof glass. When poorly sealed, you can gently pour a glass of water on the roof and watch most of it splash into the bed.

There are fixes that involve improving the seal on the appliqué, such as this one:



This worked for me.

Choose your weatherstripping shape... Other places have other shapes. Be sure tto look at the material and check to see if it would survive in the application. Gaskets is anpother area to look under. McMaster-Carr is an industrial supply place I've bought from often. I've also bought from Grainger.
https://www.mcmaster.com/products/weatherstripping/edge-seals-1~/

I've yet to see the offending area and seals, but I bet something could be found to replace the original seal and properly close up the joint so no water gets through.

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