Discuss Trunk Leak - 2005 Mustang Convertible on AllFordMustangs.com, the place for Mustang enthusiasts.
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Any of you convertible owners out there (not sure if this is convertible specific) experience leaks in the back trunk? We had a pretty heavy downpour out here today and the right side of my trunk was pretty wet. I removed the mat and it was a bit wet underneath, especially around the tail light wire harness.
I had the same problem. It turned out to be coming in thru the spoiler where it connects to the rear trunk lid. Quite a bit of water. Took it back to the dealer and now I'm dry.
I had the same problem. It turned out to be coming in thru the spoiler where it connects to the rear trunk lid. Quite a bit of water. Took it back to the dealer and now I'm dry.
Sounds like the seal is not placed correcly under the spoiler. I had the problem after the paint job and got it corrected quickly. Good luck and let the trunk dry completely before placing the mat back in. Rust never sleeps.
Another thing to check is the wire harness that goes to the light and lock solenoid on the lid. On my car I found it would sometimes get pinched between the trunklid and the weatherstrip. I had to pull it off where it's tied to the car and relocate it a little to prevent this.
So I took the car in today, since it's a holiday and got the bad news. There is a leak somewhere behind where the convertible top stows in the body. The mechanic was able to get it to leak by dumping water on the area where the top meets the body just in front of the trunk lid. Now here's where it gets worse...there's rust beginning to form at the bottom of the spare tire well where where the water stood stagnant.
So here's what has to happen. First the car goes to the upholsterer to get the top removed (dealer doesn't have the expertise). Then back to the dealer to confirm where the leak is occurring. The leak will be welded shut by another outside shop, the trunk needs to be repainted and/or the rust areas treated. Then the top gets reinstalled. Fortunately, I'm out of town for a week now so don't need the car.
And guys, the dealer confirms that this is known issue for the '05 convertible. Ford believes there were defective body welds causing the trunk to leak. So all of you convertible owners out there should pop the trunk, remove the mat and tire, and check for any tell tale signs of water damage.
So I took the car in today, since it's a holiday and got the bad news. There is a leak somewhere behind where the convertible top stows in the body. The mechanic was able to get it to leak by dumping water on the area where the top meets the body just in front of the trunk lid. Now here's where it gets worse...there's rust beginning to form at the bottom of the spare tire well where where the water stood stagnant.
So here's what has to happen. First the car goes to the upholsterer to get the top removed (dealer doesn't have the expertise). Then back to the dealer to confirm where the leak is occurring. The leak will be welded shut by another outside shop, the trunk needs to be repainted and/or the rust areas treated. Then the top gets reinstalled. Fortunately, I'm out of town for a week now so don't need the car.
And guys, the dealer confirms that this is known issue for the '05 convertible. Ford believes there were defective body welds causing the trunk to leak. So all of you convertible owners out there should pop the trunk, remove the mat and tire, and check for any tell tale signs of water damage.
Thanks. Good idea, better safe than sorry as they say...
Yep, it leaks! My 06 GT vert is a month old and has 1/2 gallon in the trunk - most in the well where the harness runs on the drivers side. I only hope it's the spoiler...
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So far no leaks that I know of. The trunk is always dry after washing and she doesn't EVERY go out in the rain so I don't know how sitting out in a heavy downpour would pan out.
Of course I do not have a spoiler (spoiler-delete) and did have the top replaced a few months ago under warranty when it committed suicide.
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2005 Sonic Blue V6 Mustang Premium Convertible w/parchment top, Sport Appearance Package, 18" AR Casino Chrome Rims, 255R45 Toyo Proxies ST, Black Ceramic Painted Calipers w/Decals (H/T), K&N CAI, Magnaflow Dual Exhaust...Future Mods: Eibach Pro Springs, Vortech Procharger S/C
I'm sure you can hose it down and open the trunk and look to see whether it's coming in around the spoiler holes. I read where someone else had this problem and, for your sake, I hope that's what it is since it's relatively easy to fix. If it's what I had, be prepared to give up the car for a week or two, as I've indicated. What happened to mine was unfortunate but it's fixed now, the dealer did a great job coordinating with the upholsterer and the body shop, and did good QA after all work was done to make sure all of the trim was installed properly.
Mine visited the dealer 3 times finally they determined it was a glue seperation problem on some trim under the top. Off to the upholstry shop it went they took the top off fixed the problem. Now i pulled it out of the garage after beiing parked thru the winter 1st rainfall and under my backseats filled with water. The top only leaks when parked facing uphill! We will see what they say this time$&#%^$#@^%
So what was the verdict? Spoiler or as in my case, "body seams"? I just took mine back in for a routine 15K service. The service writer remembered my car since it was the one that sat there for two weeks for the leak issue. He said they actually had a regional rep or engineers out to look at it also (I'm honored!!).
I am so glad I found this thread. Just so you know, its not just the 05's but the 06's as well. I bought a brand new 05 on January 30th of this year. After 7 trips to the dealer for this very problem they decided they couldn't fix it. Ford even flew an engineer out from the manufacturer to look at the car. Last week they gave me a brand new 06 convertible, exactly the same as the 05. We tested it this past Tuesday with a garden hose and it is doing the same thing. It leaks on the right side sort of near the wheel well. I am going to print out all this info and take it to the dealer with me. Maybe with your input they can fix the dang thing so I can have my car running right. Funny they never checked the spoiler, just kept sealing the trunk, replacing the weather stripping and sealing the "trough" but the leak kept coming back.
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2006 V6 5.0L Convertible Silver Satin with Charcoal leather interior, Shaker sound system. My midlife crisis dream car!
13 months old and never been driven in the rain; guess i need to park it outside in the next rainstorm (if it ever rains again); thanks for the heads up
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2005 legend lime premium GT vert; iup; manual; charcoal interior; jvc navigation; wheel locking kit; boot cover; 17 inch aluminum wheels; active anti-theft; FRPP exhausts; shorty antenna; ford gt plenum cover; strut tower brace; brenspeed sct 2 performance torque tune and steeda cai
Trunk Leak - 2005 Mustang Convertible 
) and did have the top replaced a few months ago under warranty when it committed suicide.
