Go Back   Club Lexus Forums > Lexus Model Forums > SC Models > SC 430
Sign in using an external account
Register Forgot Password?

Water in the trunk..finally solved?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 08-05-12, 05:38 PM   #1
2007sc430
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2010
Location: FL
Posts: 42
Default Water in the trunk..finally solved?

After getting fed up with the dealer "leak specialist" who couldn't figure out why there was water getting into my trunk I decided to do a little investigating myself. First a little on the design of the most rearward seal on the roof (this is the source of all the water coming into the trunk). There is a large outer channel that takes some of the water and sends it to the side trunk channels and out the back, and there is a smaller inner channel that runs under this rubber which drains the residual water so that there is none sitting in the large outer channel. This inner channel drains out of a hole on the bottom of the seal just down from the C-pillar and into the same side trunk channel (if you open the top halfway you can see exactly what I'm talking about). The problem is that the tube connecting the two fills with water during a heavy rain or carwash (as it is designed to do) and if there's any other leak from that tube, some of the water won't make it to the drain hole, and instead it will come out from the inside/interior aspect of the seal (which drains into the interior of the trunk).

First I tried sealing the inside/interior aspect of the seal the best I could but of course it's impossible to see where the breach is since it can't be inspected visually. Every time I applied some black silicone, the water just channeled around it and into the trunk. Finally I took the drastic measure of completely sealing off the inner channel (on the exterior aspect) and it seems to have fixed the problem (I hit it with a hose for a couple of minutes and trunk stayed dry...success!!!!). Now, all of the water is forced to drain down the main outer channel, although there are plenty of residual droplets left in there that have nowhere to go until they evaporate. Especially on the inside corners (just under the corners of the rear glass..ie: the most inward part of the C-pillar) there is water that just sits there.

Can anyone think of how this may become an issue down the road? Was it a bad idea to seal off a channel that was designed by Lexus to clear up the residual water? Shame on Lexus engineers for allowing water to drain INSIDE of a seal, opening up the possibility that any breach would send a small amount of water into the trunk (no pun intended).

Thanks!

By the way, a lot of you may not even notice the water in the trunk since it is a small amount and most of it drops into the carpet close to the trunk wall and over the wheel well. I had the car for almost two years before I realized the dampness. I urge all of you to check it after a heavy rain.
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
2007sc430 is offline   Reply With Quote
Old 08-05-12, 05:56 PM   #2
lexie
Pole Position
Trader Score: (0)
 
lexie's Avatar
 
Join Date: Dec 2001
Location: USA
Posts: 231
Default

I have the exact same problem like you described and I also studied how the water channel works.. It usually happened at the right side and made my carpet all wet. It happened at high speed.

What I did was to apply some gasket foam tape on the trunk rubber gasket ( to make it thicker) just near by the inner channel area and it seemed the leaking problem has been solved for now.
lexie is offline   Reply With Quote
Old 08-05-12, 07:56 PM   #3
JohnnyCake
Lexus Test Driver
Trader Score: (0)
 
JohnnyCake's Avatar
 
Join Date: Feb 2007
Location: DC
Posts: 1,108
Default

This is good information. If you could illustrate with pictures, that would probably help people in the future who find this thread.
__________________
2006 Lexus SC430 - Smoky Mica Granite with Black interior. MODS: DISABLED Nav data entry lockout when in motion; DISABLED phone entry lockout when in motion; DISABLED "I agree" screen; DISABLEDSeat belt chime ADDED: Remote Functions via Cell Phone; LuxLink; NavTool Backup Cam; Sirius XM Radio; Vais iPod adapter; Blitz cabin filter.
JohnnyCake is offline   Reply With Quote
Old 08-05-12, 08:02 PM   #4
grabber2
Lead Lap
Trader Score: (0)
 
grabber2's Avatar
 
Join Date: Nov 2010
Location: NY
Posts: 774
Default

Good info....however, I don't drive in rain & garage keep. I wash it many time & luckly, no leak to the trunk
__________________
2004 Lexus SC430 Pebble Beach Ed Azure Pearl
2006 Lexus RX400H AWD Fully loaded, ML, DVD

2005 InfinitiG35X Black on Black, Fully loaded & Navi - SOLD!
2003 RSX Type-S 6MT Black on Black - SOLD!
grabber2 is offline   Reply With Quote
Old 08-06-12, 03:01 AM   #5
2007sc430
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2010
Location: FL
Posts: 42
Default

I will try to take some photos although I'm a little embarrassed by the sloppy-job I did in applying the silicone (it's not noticeable from the outside so I didn't care too much to make it look neat). Garage queens fare better b/c they aren't exposed to the elements which degrade rubber. I try to garage it as much as I can but it still bakes in 80-95 degree weather and very high UV rays for most of the year (I live in Miami). The rubber seals don't stand a chance against this. They tend to get dry, discolored, and crack.

I use Klasse on the body which does a good job but there aren't too many options to protect the rubber that last through the rain. I've tried Griot's (washes right off), and I have bottle of Aerospace 303 that I will apply soon. I just have my doubts that any product applied to rubber can withstand a good rainstorm.
2007sc430 is offline   Reply With Quote
Old 08-21-12, 11:58 AM   #6
genec220
Driver School Candidate
Trader Score: (0)
 
genec220's Avatar
 
Join Date: Sep 2010
Location: RestON, VA
Posts: 24
Default

I have the same problem in my '02 unfortunately. I have reached my breaking point with it. So much so that I called Pohanka Lexus today. THAT is a whole 'nother story but it provides a point of reference of my frustration. If anyone can post some pictures, it would really help me resolve this. I'm not really familiar with the correct terms of the different parts being described. Please don't be embarrassed by your work. I bet it is better than Pohanka would have done, and YOU fixed the problem. A water leak is a tough one to fix.

I have isolated the leak to be on the right side, around the lower part of the rear window so it is right in the area you are describing.

Thank you in advance for your help.
genec220 is offline   Reply With Quote
Old 08-22-12, 12:05 AM   #7
nwcn98
Rookie
Trader Score: (0)
 
Join Date: Dec 2010
Location: WA
Posts: 78
Default

Quote:
Originally Posted by genec220 View Post
I have the same problem in my '02 unfortunately. I have reached my breaking point with it. So much so that I called Pohanka Lexus today. THAT is a whole 'nother story but it provides a point of reference of my frustration. If anyone can post some pictures, it would really help me resolve this. I'm not really familiar with the correct terms of the different parts being described. Please don't be embarrassed by your work. I bet it is better than Pohanka would have done, and YOU fixed the problem. A water leak is a tough one to fix.

I have isolated the leak to be on the right side, around the lower part of the rear window so it is right in the area you are describing.

Thank you in advance for your help.
I had a similar problem and ended up having the real window seal replaced. No issues since.
nwcn98 is offline   Reply With Quote
Old 07-09-13, 05:51 PM   #8
townsville
Driver School Candidate
Trader Score: (0)
 
Join Date: Jan 2013
Location: Qld
Posts: 43
Default

Quote:
Originally Posted by genec220 View Post
I have the same problem in my '02 unfortunately. I have reached my breaking point with it. So much so that I called Pohanka Lexus today. THAT is a whole 'nother story but it provides a point of reference of my frustration. If anyone can post some pictures, it would really help me resolve this. I'm not really familiar with the correct terms of the different parts being described. Please don't be embarrassed by your work. I bet it is better than Pohanka would have done, and YOU fixed the problem. A water leak is a tough one to fix.

I have isolated the leak to be on the right side, around the lower part of the rear window so it is right in the area you are describing.

Thank you in advance for your help.
I had the same problem on my '02 SC430. Mainly on the right hand side. very frustrating. Finally solved by putting a layer of all weather gasket tape on the front rubber strip on the trunk lid i.e. to make it thicker and seal up against the rear window lower strip. Solved !
townsville is offline   Reply With Quote
Old 06-01-14, 02:20 PM   #9
ozlex01
Driver School Candidate
Trader Score: (0)
 
ozlex01's Avatar
 
Join Date: Jun 2014
Location: mn
Posts: 1
Default

I had the same problem 06 LS430. It actually fried my rear computer box which had to be replaced a year ago. Same thing happened this weekend and found water standing in the left well in trunk. Drying it out now . Hopefully it did not damage the computer again. First symptom was the fuel lid pops open after switching off the car.
ozlex01 is offline   Reply With Quote
Old 06-02-14, 05:09 AM   #10
tromly
Lexus Champion
Trader Score: (0)
 
Join Date: Mar 2009
Location: VA
Posts: 3,255
Default

Quote:
Originally Posted by ozlex01 View Post
I had the same problem 06 LS430. It actually fried my rear computer box which had to be replaced a year ago. Same thing happened this weekend and found water standing in the left well in trunk. Drying it out now . Hopefully it did not damage the computer again. First symptom was the fuel lid pops open after switching off the car.
Wow, what has happened to Lexus quality?
__________________
2010 RX cerulean blue, 2011 RX satin cashmere, 04 SC 430 white gold crystal /ecru , no mods
tromly is offline   Reply With Quote
Old 06-02-14, 07:09 AM   #11
bacardi11
Lead Lap
Trader Score: (1)
 
Join Date: Apr 2013
Location: N.J.
Posts: 798
Default

I've had this problem for years. i'm going to do what (nwcn98) did and be dome with it.
__________________
2002 Midnight Pine Pearl: Clear Corners Headlights with Duel Action Flashers Clear Corners Clear Led Front and Rear Markers Megan Racing Motor Mounts Swift Springs Bilstein Custom Front and Rear Shocks Dr Gas Mufflers TM Poly Upper and Lower Control Arm Bushings Poly Bushings Steering Front GS 28.6mm Solid and ISF Rear 17mm Sway 30% Tint 18" Work Rims Motorsport Tech Spacers Door Stabiliers Focal 1 Amp Polk db 840 Sub Dc Gold Front Speakers Trans Pressure Mod Gen4 Spare Tire Mod Sprintboost
bacardi11 is offline   Reply With Quote
Old 06-04-14, 07:22 PM   #12
Moonstruck
Rookie
Trader Score: (0)
 
Moonstruck's Avatar
 
Join Date: Mar 2014
Location: Irondequoit New York
Posts: 74
Default

Does anyone use weatherstrip lubricant on the weatherstripping on your cars, especially the stripping between the roof panels? As our cars get older the stripping will deteriorate and cause the roof to leak. Water in the trunk is one thing, water inside the car would suck. Please share with me the products you use to keep your weatherstripping in good shape.
Moonstruck is offline   Reply With Quote
Old 06-04-14, 10:15 PM   #13
ShawnOk
Lead Lap
Trader Score: (0)
 
ShawnOk's Avatar
 
Join Date: Mar 2013
Location: Oklahoma
Posts: 745
Default

Quote:
Originally Posted by Moonstruck View Post
Does anyone use weatherstrip lubricant on the weatherstripping on your cars, especially the stripping between the roof panels? As our cars get older the stripping will deteriorate and cause the roof to leak. Water in the trunk is one thing, water inside the car would suck. Please share with me the products you use to keep your weatherstripping in good shape.
I started this thread a while ago. I have 303 but left it in Oklahoma, so i tried glyecerol (another recommendation from my research) and it was too messy. I don't recommend it on the gaskets. Got on the actual body in some places. Tough to clean up. Just too greasy. http://www.clublexus.com/forums/sc-4...intanence.html
__________________
Check The Lex... http://www.clublexus.com/g/album/231622
ShawnOk is offline   Reply With Quote
Old 06-04-14, 10:15 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Water under carpet mystery ramesh52 RX - Second Generation 10 09-15-14 08:43 AM
trunk lid inside assembly wet ? Blueshark ES350 (2007 - 2012) 0 08-07-14 09:36 AM
Moonroof - how many drain tubes are there? Twix LS430 5 08-01-13 07:54 AM
2006 GS300 awd water leak ACLC GS - Third Generation 2 04-23-11 08:30 AM
trunk leak! normal1 LS400 9 06-08-10 04:24 PM


Tags
07, 2004, 2006, 330, 430, es, leak, leaking, leaks, lexus, ls430, photos, roof, rx400, sc, top, trunk, water

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 06:33 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info