1. Clogged Drain Tube: The drain tube may be clogged with debris such as leaves, dirt, or even ice, preventing water from draining properly and leading to a backup and leakage.
2. Damaged Drain Tube: Check for any cracks or tears in the drain tube. If the tube is damaged, it may allow water to leak out.
3. Loose Connections: Ensure that the drain tube is properly connected to the firewall and that all the connections are tight. If the tube is loose, it can cause water to leak out.
4. Damaged Firewall Seal: The seal around the firewall may have become damaged or deteriorated, allowing water to seep through.
5. Defective Cowl Panel: The cowl panel, located at the base of the windshield, may be damaged, allowing water to enter the engine bay and leak through the firewall drain tube.
6. Overflowing Windshield Washer Fluid Reservoir: If the windshield washer fluid reservoir is overfilled, it may overflow and drain through the firewall drain tube, causing a leak.
7. Failed Air Conditioning Drain: The air conditioning system also has a drain tube that discharges water from the evaporator coil. If this tube is clogged or damaged, it can cause water to leak from the firewall area.
To resolve the leak, you'll need to identify the exact cause and take appropriate action to fix it. If you're not comfortable working on your car's plumbing system, it may be best to consult a professional mechanic for assistance.
