Rear cargo area leak driving me crazy - passenger side corner wet

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Joined
Feb 14, 2026
Threads
4
Messages
12
Location
California
Hey beautiful people of ih8mud,

I’m trying to track down a water leak in my 2002 LX470 and could use some advice.

I’m getting water pooling in the rear cargo area corner (passenger side). The carpet and that side panel area get noticeably wet, especially after rain.

At first I thought it might be the 3rd brake light, since mine is cracked, but the water is showing up more on the side rather than directly in the center. That’s making me think it could be something else. Also if anyone found a good third break light, please send the link.

A few thoughts I had:

* Side tail light gasket/seal?
* Rear hatch weather seal?
* Water coming in from the 3rd brake light and traveling?

I haven’t done a full hose test yet but plan to soon. Before I start pulling things apart, I wanted to see what’s most common on these trucks.

For those who’ve dealt with this:

* Where did your leak end up being?
* Is the tail light gasket a common failure point?
* Did you replace the gasket or just reseal it?
* Anything else I should check while I’m in there?

I’m trying to fix this properly before it turns into rust inside the hatch. That being said, I was changing my third break light (couldn't because the one they sent me had different bolt spacing smh) and I could not see anything close to being rusty, this car spent most of her life in TX and CA so maybe the leak dried out fast but still.

If anyone has pics of where their leak came from or how they sealed it, I’d really appreciate it.

Thanks!
 
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Also, the owner before me installed a rear camera. Ngl some people should stay away from electronics or touching the car because I can tell he didn't do a good job. I heard some people started having that issue after installing rear camera, what should I check if that's the case? Also my roof rack isn't in great shape, maybe that is the issue but how do I check that either? I really want to get a Dissent off-road Aluminum roof rack but I am going back to school and I can't afford it. I just changed my rims and tires. This car is so much work and money but god I love my car. I wish life wasn't this expensive.
 
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