1. Identify the Source of the Leak:
* Thorough Inspection (Exterior): With a hose or garden sprayer (someone needs to operate it while you're inside the car), systematically wet the exterior of the door. Pay close attention to:
* Weatherstripping: Check all around the door frame, paying special attention to the top and bottom. Are there any cracks, tears, or areas where the rubber is compressed or deteriorated?
* Window Seals: Inspect the rubber seals around the window itself. Leaks often originate here. Is the window properly seated?
* Drain Holes: Subarus, like many cars, have drain holes at the bottom of the doors. Check that these aren't clogged with debris. Use compressed air to blow them clear if necessary.
* Door Panel Seals: Examine the seal where the door panel meets the door itself.
* Interior Inspection: While someone is spraying, watch inside the door for water entry points. Look closely at the following areas:
* Door Panel: Remove the interior door panel (plenty of online tutorials for your specific year/model exist) to inspect the inner workings. Look for rust, holes, or water stains indicating the leak's path.
* Window Regulator: Make sure the window regulator isn't damaged or leaking.
* Wiring Harness: Ensure no wiring has been compromised.
2. Fixing the Leak (based on what you find):
* Weatherstripping: If the weatherstripping is cracked, torn, or compressed, you'll need to replace it. You can purchase replacement weatherstripping from a Subaru parts dealer or auto parts store. Proper installation is crucial for a good seal.
* Window Seals: Similar to weatherstripping, damaged window seals need replacement. This is often a more involved repair and might require a professional.
* Clogged Drain Holes: Clear any debris from the drain holes using compressed air or a small flexible wire.
* Door Panel Seal: If the leak is coming from the door panel, you might need to replace the seal or use weatherstrip adhesive to reinforce it.
* Holes/Rust: If you find holes or rust, these need to be addressed with rust treatment, sealant, and possibly patching material.
* Window Regulator: A damaged window regulator is a more complex issue. It might need repair or replacement.
* Other potential leaks: Examine the window itself for cracks allowing water in and check that the latch mechanism seals correctly.
3. Repairing the Door Panel (if removed):
After addressing the leak, carefully reinstall the door panel. Make sure all clips and fasteners are properly secured.
4. Post-Repair Test:
After making repairs, repeat the water test to ensure the leak is completely fixed.
Important Considerations:
* Professional Help: If you're not comfortable with automotive repairs, consider taking your Outback to a mechanic specializing in Subarus. Water damage can lead to more extensive problems if left untreated.
* Safety: Disconnect the car's battery before working with any electrical components.
* Pictures: Take pictures before, during, and after the repair process. This will help you document the problem and your solution.
This process is methodical. Start with the easiest and most likely culprits (weatherstripping and drain holes) and move to the more complex repairs as needed. Finding the precise source of the leak is key to a successful repair. Remember to consult repair manuals or online resources specific to your 2001 Subaru Outback for detailed instructions and diagrams.
