where is 2003 IS300 evaporator drain - Lexus IS Forum
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post #1 of 8 (permalink) Old 05-10-2019, 11:00 AM Thread Starter
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where is 2003 IS300 evaporator drain

Carpets are damp behind the drivers seat and I can hear water "sloshing" around in the dash. Based on other internet searches I suspect my evaporator drain is blocked but I can't find the drain hose. Any ideas (picture would be awesome).
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post #2 of 8 (permalink) Old 05-10-2019, 12:17 PM
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Searched for pics and didn't find, but the drain line is in the engine compartment, in back against the firewall, on the passenger side. If points straight down.

I don't see how it could be the cause of a wet carpet behind drivers seat. The sloshing/gurgling you hear in the dash is more likely engine coolant circulating through your heater core. Do a good burping of the cooling system to get out any air.
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post #3 of 8 (permalink) Old 05-12-2019, 01:38 AM
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Does it have a sunroof? The drain tubes for that can block and cause issues

2001 Altezza Gita JCE10
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post #4 of 8 (permalink) Old 05-12-2019, 02:22 PM
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Oops, I gave bad location info in my previous post!

The drain is in the front passenger wheel well, towards the rear. You can't miss it.
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post #5 of 8 (permalink) Old 05-12-2019, 02:26 PM
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post #6 of 8 (permalink) Old 05-13-2019, 06:16 PM Thread Starter
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Originally Posted by Pnut00 View Post
Does it have a sunroof? The drain tubes for that can block and cause issues
Yes, it does have a sunroof.... where is the drain hose for that?
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post #7 of 8 (permalink) Old 05-13-2019, 06:38 PM
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Yes, it does have a sunroof.... where is the drain hose for that?
Pretty sure it runs down the front pillars by the windscreen, but I was thinking if the hoses are split or pulled out by the sunroof you might get leaking down the middle pillar to the rear foot well.

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post #8 of 8 (permalink) Old 05-13-2019, 06:40 PM Thread Starter
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Thanks, see it there.... as you say, can't miss it.
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