* Sunroof Drain Clogs: This is a very common cause. The sunroof drains run down inside the A-pillar (the pillar between the windshield and door) and can become clogged with debris. If blocked, water will overflow and run down into the passenger compartment.
* Windshield Seal Leak: A leak in the windshield seal, particularly on the passenger side, allows water to seep in. This is more likely if you've had recent windshield work.
* A/C Drain Line Clog: The A/C system produces condensation, which drains through a tube. If this line is clogged, water can back up and enter the cabin.
* Door Seal Leak: While less common, a poorly sealing passenger-side door can allow water to enter, especially during heavy rain or when driving through puddles.
* Cowls: These are the plastic covers over the windshield wipers. If cracked or improperly sealed, they can allow water to run directly into the cabin.
* Floor drain blockage (less common but possible): There's a possibility of a drain in the footwells becoming clogged. This is less frequent but worth a look if other suspects are eliminated.
Troubleshooting Steps:
1. Check the sunroof drains: Inspect the sunroof drain tubes near the A-pillar. Use a small piece of wire or compressed air to clear any clogs.
2. Inspect the windshield seal: Look closely for any signs of separation or damage.
3. Check the A/C drain line: This is usually located under the passenger side dash. If you're comfortable with it, check for clogs.
4. Test the door seals: Close the passenger door firmly and check for any gaps or leaks. Try using a garden hose at a low pressure, carefully aiming at the door seals, to pinpoint the source (do this in an area where water won't damage anything).
5. Inspect the cowls: Remove the wiper cowl to see if water is entering through cracks or gaps.
If you can't identify the source yourself, take it to a mechanic specializing in Jeeps or a body shop for a proper diagnosis. They have experience with these common Jeep leaks and can pinpoint and repair the problem effectively.
