Interior leak?! Pillar to passenger back seat.

[Shifting_Gears]

Has ANYONE seen this before? Normal rain showers, coming in through pillar and leaking onback seat.

No holes in the roof… window is fully up. I am confused and frustrated.

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[KingKona]

Check for cracking paint around the rear window, and in the drip rails on the roof.

 

[Shifting_Gears]

Check for cracking paint around the rear window, and in the drip rails on the roof.

The rear glass area is my first suspicion but without looking at the car, I can’t visualize if that would line up. However, I have seen cracking in that area as many people have reported.

It’s really a shame build quality is this piss poor for little stuff. My new edge GT is dry as a bone and it’s 22 years old.

 

[Ock]

check the 3rd brake light. my leaked after original owner put stripes on, they used existing glue and never reapplied... i had to get a new because of course it cracked taking it off. its a 30 min job otherwise.

 

[KingKona]

OP, have you been using a pressure washer on your car?

 

[Shifting_Gears]

check the 3rd brake light. my leaked after original owner put stripes on, they used existing glue and never reapplied... i had to get a new because of course it cracked taking it off. its a 30 min job otherwise.

Good idea. My light hasn’t been out but maybe the heat caused an issue.

OP, have you been using a pressure washer on your car?

Yes at the car wash, but generally am cognizant of not blasting seals. Possible though. But todays leak was just due to rain.

 

[Vegas5OH]

its the seal on the bottom of the third brake light. My car did the same thing, you need to replace the light

 

[Cobra Jet]

Has ANYONE seen this before? Normal rain showers, coming in through pillar and leaking onback seat.

No holes in the roof… window is fully up. I am confused and frustrated.

Here's the most common rear interior water leak threads, it should help with your concern. You may have the 3rd brake light water leak, which will allow water into the C-pillar areas.

CHECK THIS THREAD, it's for 3rd brake light leak repair with instructions:
https://www.mustang6g.com/forums/threads/issue-with-third-brake-light-water-leak.97131/

Also here's more S550 water leak threads that may help if it's not the 3rd brake light:
https://www.mustang6g.com/forums/threads/trunk-water-leak-did-i-repair-or-cause-issue.148040/

https://www.mustang6g.com/forums/th...ear-quarter-panels.143545/page-2#post-2940946

https://www.mustang6g.com/forums/threads/trunk-leaking.15806/#post-2695720

https://www.mustang6g.com/forums/threads/water-in-trunk.88100/#post-1959273

I hope the above is helpful

 

[Shifting_Gears]

its the seal on the bottom of the third brake light. My car did the same thing, you need to replace the light

Thank you. I am hopeful that’s it. I poured a lot of water around the glass/seam sealer area that’s cracked and nothing came in.

Here's the most common rear interior water leak threads, it should help with your concern. You may have the 3rd brake light water leak, which will allow water into the C-pillar areas.

CHECK THIS THREAD, it's for 3rd brake light leak repair with instructions:
https://www.mustang6g.com/forums/threads/issue-with-third-brake-light-water-leak.97131/

Also here's more S550 water leak threads that may help if it's not the 3rd brake light:
https://www.mustang6g.com/forums/threads/trunk-water-leak-did-i-repair-or-cause-issue.148040/

https://www.mustang6g.com/forums/th...ear-quarter-panels.143545/page-2#post-2940946

https://www.mustang6g.com/forums/threads/trunk-leaking.15806/#post-2695720

https://www.mustang6g.com/forums/threads/water-in-trunk.88100/#post-1959273

I hope the above is helpful

Awesome!! Thank you for digging that up. I’ll take a look.

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