2010 RX350 Trailer Wiring - Page 2 - ClubLexus - Lexus Forum Discussion


RX - 3rd Gen (2010-2015) Discussion topics related to the 2010 - 2015 RX350 and RX450H models

2010 RX350 Trailer Wiring

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Old 10-06-16, 07:08 PM   #16
SRay
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Default Thank you!!

You guys are life-savers!
I too connected an extension wiring harness to the connector near the driver's side rear wheel, and it was dead.
I can confirm that installing Lexus part 81985WY010 (I paid $74) rectified the problem and once installed, the connector was live.
You should also make sure that you have the 30A fuse installed in the trailer fuse position.
In case you're curious (I was), the 81985WY010 contains a circuit board with 3 FET's and what could be a micro-controller. So, at least your money isn't just buying just a simple jumper that's making Lexus a ton of money. They're still making quite a bit tho, those parts are probably worth $20, if that...
Good luck to those DIY's! (BTW, my dealer wanted to charge me $284 (2 hours labor) to install the part. I did it in 1:15.)
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