A/C Leak From Under Dash
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Looks like the drain is plugged and the water is filling the evaporator box, and then overflowing into the interior.
The question is, why is the drain being plugged.
If it was a design flaw, we'd all have the same issue.
I've seen spider webs that have plugged a drain enough to cause this...as unbelievable as that sounds.
Once the 'why' is answered, the problem should be fixed.
Of course if this is visit #6 for the exact same problem, I'd be having a discussion with the service manager.
The question is, why is the drain being plugged.
If it was a design flaw, we'd all have the same issue.
I've seen spider webs that have plugged a drain enough to cause this...as unbelievable as that sounds.
Once the 'why' is answered, the problem should be fixed.
Of course if this is visit #6 for the exact same problem, I'd be having a discussion with the service manager.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
The one drain port is in the bottom center of the HVAC box, basically right over the middle of the tranny tunnel, behind the dash. The drain hose attached to the port comes out by the passenger front tire.
Thread Starter
Pole Position
Joined: Aug 2012
Posts: 291
Likes: 8
From: Florida
I purchased this car certified pre own a year ago. Everything worked ok but then the A/C stop being cold on the passenger side. It was always hot. After 4 visits it still had temp control problems. On the 5th visit I had a loaner for almost 3 weeks while Lexus brought in an engineer to work on it. They had the dash apart to change all of the valves and temp controls.
i have an appointment this Saturday. See what happens.
i have an appointment this Saturday. See what happens.
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Pole Position
Joined: Apr 2018
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From: GA
Driver
Joined: Apr 2015
Posts: 131
Likes: 11
From: CA
it’s a spider nest. The drip tube is 1/4 in diameter and it gets clogged by a spider nest. Layers of webbing/nest. Pull the tube, blow it out with air blower and now the water can drip. It’s called drip tube water intrusion.
Pole Position
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
I was just saying you’re just assuming that’s what it is but it could be something else causing the blockage.
Driver
Joined: Apr 2015
Posts: 131
Likes: 11
From: CA
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Agreed, and since the subject vehicle of the thread has had the HVAC system worked on extensively, it's possible the hose just fell off (cause someone didn't put it back on properly, or it came loose during reinstallation of the HVAC box), and now the water is draining inside the car.
I prefer to start with the simple possibilities and work upwards from there.
The spider web scenario, in reality, can happen to any car.
I prefer to start with the simple possibilities and work upwards from there.
The spider web scenario, in reality, can happen to any car.