Question about 2002 Toyota Sienna

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AC condensation (drain) is clogged and is leaking into inside

This happened in an old car and I remember that there was a simple way to get to the drain plug and clean out...just presuming that this is the problem....

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Yes, beneath the evaporator housing under the hood ther is a rubber thing that looks like the flattened end of a vacuum vozzle. squeeze it like the old coin putrses with your finger thips. the cap will come off do you can clean it out. The evaporator housing is the black box the air conditioner lines xome out of on right firewall. Good luck

Posted on Jun 08, 2009

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1 Answer

Central vent block


The vents are clogged.
you will need to check both drain tubes to make sure they are clear.the Evaporator drain tubes the condenser does not have drain tubes. They exit the vehicle underneath the vehicle along side the transmission. They are a black rubber tube, you will need to get under the vehicle to access them.If you have no water coming out of those drains that is your problem.On top of the transmission tunnel inside the vehicle. If you look along the transmission tunnel inside the vehicle you will see the carpeted section that can be removed which is held in place by a screw. Remove this carpet on both side and you should be able to see the evaporator drains.Because the tubes are not draining the water the housing will fill up with water until it finds a point were it can leak out from.Underneath you will not see the clogging you do not need to replace them for clogging. The best way is to check the drain tubes were they connect to the housing. Yes it can be a common problem if your cabin filter has not been changed at the times that are required or if you live in an area were there are a lot of trees.

There is dealer service bulletin on such problem:
If this leakage happens when it is not raining ... and ... it does not smell like engine coolant (a sweet maple-like smell) ... AND .... you are running the air conditioning, this may be condensation drain-off from the A/C evaporator. This condensation is supposed to drain through the bottom of the heater/AC box and then through the floor (at the top of the transmission tunnel hump), to the ground. This is the puddle of water that you see under a car when the air conditioning is running.
If the drains in your heater/AC box are clogged (or the tubes connecting the drains to the chassis floor), the condensation will gather and then leak out onto the floor. The cure is to clear the drain tubes. If all of the above points fit your scenario, of course, this is under warranty. I would suggest that you ask what the dealer has already done (in detail) and note that you still have the leakage and the the drains are likely still clogged (again, if the above parameters fit your case).


Also click the link below for more help:
http://carrepairworld.blogspot.com/2016/06/bmw-x5-central-vent-block.html
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This will help.
Thanks.

Jun 04, 2016 | 2007 BMW X5 4.8i

1 Answer

My car AC is leaking water in the car


Your condensation drain is clogged. It's located below the cowl, inside the engine compartment. It drains under the passenger side carpet to outside. Use compressed air blow to out all debris in and below cowl/drain.

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I am having problems with A/C condensation leaking inside with flooding the front and back floor of Car


check your drain hose for blockage, if it's clogged up the condensation will leak into the floor

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Aircon water leaking inside the car on passenger side.


Most cars have the air conditioner drain on the passenger side just in front of the fire wall , if this becomes clogged it will back up and run out in the area you indicated. Look for the drain hose and make sure it is not kinked or plugged!

The problem you describe could be from condensation. On very humid days, I have seen some condensation from auto air conditioners blow through the ducts. If you run your A/C in the heat/defrost mode (it probably comes on by itself when you run the defroster), that could happen, and the water could be leaking down through the heater vent. It could be a sign that you're A/C unit is low on refrigerant, in which case, you'd need to get the system serviced.

A leaking door seal on the passenger's side could also cause that, but only if it was raining. If I assume that this is happening when it is not raining, the A/C is the only place water could be coming from. The only other, remote, possibility is windshield washer fluid, but you would probably notice that by its odor.

Hope helped (remember rated this help).

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Wet spot on passenger floor board and its not antifreeze could it be condensate


sounds like it check the a/c fluid drain for any restriction, or leaks

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Water is leaking INSIDE my car


Well, the A/C drain may very well be clogged. What happens is, trash and leaves and such will fall into the fresh air vent outside the car eventualy making its way down into the air box, where the evap core is located. The evap core housing/ air box has a drain for the condensation from the evap core to drain. This drain gets stopped up from the dirt, leaves and trash, in turn causes the condensation to overflow into the car. One way to avoid this in the future is to run your A/C on the recirculated air mode, thast way your not pulling all the trash in from outside.

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Water on floor


There are 2 places it could be coming from, most likely is a leaking or bad "heater core". If it's not a heater core, it would be "condensation" from your air conditioning system. Check your coolant first. If it's low, your heater core is leaking the coolant inside the vehicle. If you don't repair this problem it can lead to severe engine damage. If it's not the heater core, the condensation buildup from your air conditioner is not properly draining outside the vehicle. Could be as simple as a clogged, or damaged drain hose.

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3 Answers

Wet on Passenger side floor when AC is on


Auto ac units have an outside drain for the condensation. If you ever noticed a car running and it looks like it's leaking something on a hot day it's the condensed water from the ac unit draining. What you have is a clogged or disconnected drain hose.
You need to find the hose and drain and reconnect them. Sounds simple, good luck.

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Water leak on passenger side on 99 chevy s 10 not anterfreeze, leaks when not being driven


there is only one thing that leaks water there, that is the AC condensation drain, water forms as part of the AC cooling the evaporator core, this water must be drained away or it will flood onto passenger area, so there is a drain on the passenger side at bottom of firewall, will leak allot of water depending on how humid the air is.

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