Where do the sunroof drains exit under the vehicle?

[Super77]

I’ve got a little bit of water in dripping in and I want to make sure my sunroof drains are clear. Supposedly the PO had the dealership clear them a few months ago. I don’t see any debris in the perimeter basin, but when I pour water into the drain holes, it seeps out of the pinch seam under the rocker panels. Shouldn't there be a rubber tube poking out under the car where the water drains?

I ran about 4’ of wire into the drain holes before it stopped feeding in … somewhere.

 

[Trunk Monkey]

Sunroof Drain Confusion (see pics am I in the wrong place)?

I've read all the sunroof drain post I can find and I understand everything in theory for series 100 sunroof leaks. I checked out the drain holes up in the sunroof tracks and they look real clean. I've used compressed air to clean, but what I'm really confused about is these post about going...

forum.ih8mud.com

 

[Super77]

thanks @Trunk Monkey. ChatGPT checks this time I guess:

On a 1999 Toyota Land Cruiser (J100), the sunroof drainage system includes four drain tubes—one at each corner of the sunroof cassette. The front drains route through the A-pillars, and the rear drains route through the C-pillars. Here’s a breakdown of where the front tubes exit and where you should see water draining:

Front Sunroof Drains – Exit Location
• The front drain tubes run down the A-pillars and exit behind the front fender liners, near the lower rocker panel area, close to the front door hinges or kick panel area. To see the water draining:

• Open the front doors and look behind the front wheel wells, where the rocker panel meets the fender.
• Water should be visible dripping near the seam between the body and the rocker, or just behind the mud flaps (if equipped).
• You may need to remove the lower plastic splash guards or fender liners to fully access or clean the drain exits.

Rear Sunroof Drains – Exit Location
• The rear drains route through the C-pillars and exit.
• Just behind the rear wheel wells, either through the lower rear quarter panel or via ports behind the rear bumper.
• Look for small rubber grommets or plastic drain valves at the bottom edge of the quarter panel.

Troubleshooting Tip
If you pour a small amount of water into the front sunroof channels and it doesn’t exit near the front door rocker/fender seam, the drain tube may be clogged or disconnected—often due to debris or deterioration of the rubber elbow at the drain exit.

Sources & Supporting Documentation
1. Toyota Factory Repair Manual for 1999 Land Cruiser J100 – While it doesn’t explicitly show the full sunroof drain path, it documents the A-pillar routing for wiring and sunroof cassette, which supports the drain tube routing through the same pillar.

2. Toyota 100-Series Land Cruiser Forums – IH8MUD.com contains dozens of threads from owners detailing sunroof drain clogs and confirming exit points behind the fender liners. Relevant threads:

• “Sunroof drains — where do they go?”
• “Clearing sunroof drains”

3. YouTube Video Reference – “Toyota Land Cruiser 100 Series Sunroof Drain Cleaning” videos confirm the exact drain exit points during water testing and maintenance procedures.