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Heated seats trouble shooting please
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Dahj
Novice
Jan 16, 2022, 5:38 PM
Post #1 of 11
(2188 views)
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Heated seats trouble shooting please
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My heated seats aren’t working on a Lexus rx350 2010. Obviously it could be a lot of things, but, wondering just as much as to what it most likely isn’t, considering that…
- the indicator lights aren’t lighting up? -The fuses are good.
The dream would be if it’s most likely the switch (that has had plenty of spills seep into it), and I could replace that, and hope that that’ll do it?!
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 16, 2022, 5:50 PM
Post #2 of 11
(2186 views)
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Re: Heated seats trouble shooting please
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If the light isn't lighting up it's most likely the fuse but all you have to do is test for power on the violet wire with the key on.
It is powered by fuse ECU-IG1 3 10A
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 16, 2022, 8:35 PM
Post #4 of 11
(2166 views)
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Re: Heated seats trouble shooting please
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There are 3 fuses for the system. The left and right are after the switch. The one I gave you powers the switch.
You can't just look at a fuse. You have to use a test light and test for power at both ends of the fuse.
Yes, the violet wire at the switch. I'm betting the fuse is blown.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Dahj
Novice
Jan 16, 2022, 8:42 PM
Post #5 of 11
(2162 views)
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Re: Heated seats trouble shooting please
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Ok thanks. Where is the 3rd fuse located?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 16, 2022, 8:44 PM
Post #6 of 11
(2158 views)
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Re: Heated seats trouble shooting please
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The same box the other 2 were.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Dahj
Novice
Jan 16, 2022, 9:18 PM
Post #7 of 11
(2151 views)
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Re: Heated seats trouble shooting please
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This is the fuse diagram
Everything else seems to have a lot of other things attached. Seat heater is mentioned a couple of times, in 6 and 21. But there’s aren’t any issues with anything else on those fuses. Still worth checking out those fuses? Or am I missing something?
https://fusecheck.com/lexus/lexus-rx-350-al10-2010-2015-fuse-diagram
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 17, 2022, 2:10 AM
Post #8 of 11
(2135 views)
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Re: Heated seats trouble shooting please
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By that diagram I'M NOT SUSCRIBING TO showed position 36 and 37 for right and left. Both out back to first one.
Check power already said with a test light without even removing fuses WHEN you enable the items. If you don't know how I'll explain,
Tom
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 17, 2022, 5:40 AM
Post #9 of 11
(2131 views)
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Re: Heated seats trouble shooting please
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OK, you're making this harder than it needs to be. I gave you the correct fuse in the first post which is #6 in that diagram.
That is the only fuse you need to be concerned with right now.
If that fuse is good, then you are back to testing power into the switch as I also suggested in the first post.
You need a test light for any of this and if you don't have one, we are all wasting our time here.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jan 17, 2022, 5:42 AM)
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Dahj
Novice
Jan 17, 2022, 11:48 AM
Post #10 of 11
(2103 views)
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Re: Heated seats trouble shooting please
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Sorry I didn’t mean to be difficult, while waiting to pick up a test light I was just curious as to how anything else on that fuse could be working (mirrors/moonroof/wipers/washer) with a busted fuse.
Anyhow, after testing the fuses I went to find and test the violet wire and found the switch diconnected! 🤦‍♂️
Whether it fell out or the original owner didn’t like an accidentally hot tush I’ll never know. But my bum is happy, thanks for you detailed and expert advice.
Cheers
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 17, 2022, 11:54 AM
Post #11 of 11
(2101 views)
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Re: Heated seats trouble shooting please
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I've owned 6 RX's and that exact same thing happened to the one I'm driving now. That's why that was my starting point.
Glad you got it fixed. Closing this question now.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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