Question about 2007 Toyota Yaris

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Water dripping under car (Yaris 2009 HB) after stop. About a 3 " puddle, no odor, no color, at 5-10 second drip. Stops after a while. Do not run A/C, nor defrost. Why dripping even if A/C not in use. Checked all fluids, but nothing missing. Please tell me if this is a condition to be worried about. Thank you

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Is it not a hybrid

Posted on Jun 03, 2009

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There is a foul odor after starting car with outside air running.

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Water is dripping from under my car

this is most likely condensation emptying from the drain, this is normal. Check to see if the water is green in color or orange, if it is then you have a leaking hose somewhere, this is not normal

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Could be the drain tube is partially clogged. It is usually located on the fire-wall or down towards the floor pan under the car. It is usually close to where the A/C lines go thru the fire-wall. About 1/2 inch diameter sticking straight out but may have a 90 degree elbow pointing down.
Also, it's been extra hot and humid all over and moisture could be freezing inside the unit when on MAX A/C, then suddenly melting when switched to normal. This opens the outside air door and allows warm/hot air into the unit instead of recirculating the cold air inside the car. The drain may not be able to handle a large, sudden quantity of water.
Perform a "driveway" test. Open the hood, start engine and run the A/C on normal with the windows or doors open. Locate the drain tube by looking for water dripping. Once located twist 2 or 3 pipe cleaners together and verify the tube is clean. Then close the doors/windows and switch to MAX A/C. Check for water dripping. If it stops dripping, water is freezing inside and now you know why!

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Transmission and oil leaking in to oil pan under a 1999 jeep no seeable leak points but its a class 2 leak ( drips forming but no puddle under the vehicle)

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run the car for 5-10 minutes with ac on full. Move the car to a dry area, shut it off. if the drip continues for a little bit and stops.
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Air conditioning

Run the A/C, and look under the vehicle for water to be seen dripping out on the road. If no water is dripping, you have a blocked A/C condensate drain tube. This drains the water that the A/C removes from the air in the pass compartment (humidity), and drains it outside of the vehicle. Look under the dasjh, pass side, towards the center. The tube runs thru the body. It must be clean or water will back up and eventually leak inside your vehicle.

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2 Answers

Water laeking

A condenser from your A/C unit could cause water droplets and a puddle to appear. If you live in a humid area you could be seeing that condensation very similar to a cold glass getting condensation on the outside due to cold liquid on the inside. If the water has color i.e. green, it may be a leak in your heater core. One possible way to find out is to not run the A/C or the defroster as this causes the compressor to kick on also, and see if the water stops dripping.

Good Luck

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