Clear Water Leak Under Ford Mustang (AC Off)
Clear water leaking from under the vehicle when the AC is not running is likely condensation from the air conditioning system or a harmless drain tube issue. However, since the AC was off, it could also be coolant or windshield washer fluid, though coolant is usually colored. The most common cause is residual condensation from the evaporator drain, which can continue to drip for a short time after the AC is turned off. If the fluid is truly clear and odorless, it is likely water and not a critical concern.
Diagnosis Details
Possible Causes
Residual condensation from the AC evaporator drain tube dripping after the AC was turned off (normal operation).
Windshield washer fluid leak (if fluid is clear and has a slight alcohol smell).
Coolant leak (if fluid is clear but has a sweet smell; coolant is usually green, orange, or pink, but can appear clear in low concentrations).
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What You Should Do
Check the fluid color and smell.
If it is clear, odorless, and water-like, it is likely normal condensation.
If it has a sweet smell, it may be coolant and requires immediate inspection.
If it smells like alcohol, it is washer fluid.
Monitor the fluid level in the coolant reservoir and check for any leaks under the hood.
If the leak persists or the fluid is colored, have the vehicle inspected by a mechanic.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
