Water leaking into PS a-pillar during rain storms (1 Viewer)

Joined
Nov 17, 2016
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158
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Austin
Has anyone run into a scenario where you have a water leak that only happens when your car is parked?

What did you do to correct it? And did you find any rust if you had to pull out the glass?

I've checked the sunroof drains, ran a hose across the windshield / sunroof / roof rack with no luck. I even had a local installer re-sealed an area considered to be the source of the issue.

At this point my next option seems to be re-installing the glass OR replacing the windshield again.


 
Joined
Nov 4, 2007
Messages
10,035
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Colorado
 
 
Pull the interior molding and take a look.

Two cause:
1) Holes in A pillar from improper installation of exterior side molding. There is a thin soft plastic strip inside of side molding, covering rivet holes. Pull it out to see if the four rivets are in place. Often installer use screws in newly drilled holes, leaving rivet holes open to air & water.
2) Rust.

Edit: It's also possible the roof rack bolts are leaking.
 
Joined
Nov 17, 2016
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158
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Austin
Beyond pulling the roof rack any suggestions on how to check that? High pressure vs. hose perhaps?
 
Joined
Apr 3, 2017
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21
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Knoxville, TN
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Has anyone run into a scenario where you have a water leak that only happens when your car is parked?

What did you do to correct it? And did you find any rust if you had to pull out the glass?

I've checked the sunroof drains, ran a hose across the windshield / sunroof / roof rack with no luck. I even had a local installer re-sealed an area considered to be the source of the issue.

At this point my next option seems to be re-installing the glass OR replacing the windshield again.


I am currently handling this same situation. I had my windshield replaced, but they didn't want to put the glass back in because there was a hole from the rust that was under the upper seal. You could not see the issue until the glass was pulled. The water would collect at that spot and go in and down the passenger side pillar. My wife and I removed the glass and prepped the area for a new piece of steel to be welded in tomorrow evening.
 
Joined
Jun 7, 2008
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360
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SC
 
 
Mine does it on the drivers A pillar at the upper junction like the pic a couple posts above. Hopefully it's improperly installed trim and not rust like above!
 
Joined
Dec 19, 2010
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1,191
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San Juan Cap.
I would start simple.

Some flowable silicone and tighten up the roof rack bolt ( 40 torx bit) nearest the passenger side A-pillar.

Hose and watch what happens.
 
Joined
Sep 15, 2016
Messages
650
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Durham, NC
I had this happen to me. Check the sunroof seal as well. That ended up being my issue. I replaced it and so far so good!

Other things to check are windshield gasket and clogged drain tubes. Take some compressed air or a long flexible rod and try and clear them out. If you open the sunroof and poke your head up through the opening, you will see the drainage tubes in the front corners.
 
Joined
Nov 17, 2016
Messages
158
Location
Austin
I would start simple.

Some flowable silicone and tighten up the roof rack bolt ( 40 torx bit) nearest the passenger side A-pillar.

Hose and watch what happens.
When I tried hosing that area this weekend no leaks showed up ... maybe not trying hard enough - thanks for the suggestion
 
Joined
Nov 17, 2016
Messages
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Austin
I had this happen to me. Check the sunroof seal as well. That ended up being my issue. I replaced it and so far so good!

Other things to check are windshield gasket and clogged drain tubes. Take some compressed air or a long flexible rod and try and clear them out. If you open the sunroof and poke your head up through the opening, you will see the drainage tubes in the front corners.
Tested the drain tubes in sunroof they didn't seem clogged although water did take a bit to drain thru ... hrrmmmmm.

RE the sunroof seal will try that too.
 
Joined
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Messages
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Austin
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I am currently handling this same situation. I had my windshield replaced, but they didn't want to put the glass back in because there was a hole from the rust that was under the upper seal. You could not see the issue until the glass was pulled. The water would collect at that spot and go in and down the passenger side pillar. My wife and I removed the glass and prepped the area for a new piece of steel to be welded in tomorrow evening.
Glad you found that before it got worse holy crap - definitely makes me want to re-install the glass almost as a 'just in case'!
 
Joined
Sep 15, 2016
Messages
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Durham, NC
Tested the drain tubes in sunroof they didn't seem clogged although water did take a bit to drain thru ... hrrmmmmm.

RE the sunroof seal will try that too.
Sounds good. Mine was leaking in the rear center of the sunroof where the plastic trim meets. When I removed the sunroof to replace the gasket I could tell the old one was compressed and worn out compared to the new one.
 
Joined
Apr 3, 2017
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21
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Knoxville, TN
Glad you found that before it got worse holy crap - definitely makes me want to re-install the glass almost as a 'just in case'!
Thank you! I am too. I will post up some pics once the gentleman welds in the new piece tonight. I will be cleaning it up more for primer and paint. NAPA mixed my paint code and put it in an aerosol can. It is a 2 stage base / clear. I will post the final shots as well once I am finished.
 
Joined
Nov 17, 2016
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Austin
Update: the cause was a, or the same, leaky upper PS windshield seal spotted earlier. Probably could have just sealed & be done but the potential rust issue drove me to just replace the windshield. I thankfully learned it was only a teeny bit of surface rust on the upper PS similar in position to where TNLX470's likely started. Just did a bit of brushing & priming to correct. Oh yea - confirmed no screws were used so there's another win.

My next project will be fixing the DS molding that's not sitting flush with the A-pillar & causing lots of wind noise.

Always something else ...
 
Joined
Apr 3, 2017
Messages
21
Location
Knoxville, TN
Back in business now too. It's not showroom quality, but I have handled the rust and repaired the massive hole. The glass is back in and we have resolved that leak. It's been raining for the past few days and my interior is dry.
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