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Is this a towing connector?


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I've had my 2024 RX350h for a little over a month and just love it. I'm thinking about adding a towing hitch which will be no problem. My question is abut the wiring for a 4 conductor trailer plug. My research showed that models before 2023 have a connector underneath the rear bumper on the driver's side where an extension harness can be plugged in. I could not find any information about such a connector on the 2023 or 2024 models. My Lexus does not have the towing package which I understand includes increased cooling for the transmission. I only have a small trailer that I use from time to time and am not concerned about any overheating.

When I looked underneath the rear bumper there is a 4 prong connector towards the passenger side that appears it may be for a towing harness. Does anyone have any information or experience with this connector. The wire colors are white, green, brown and red. A couple of pictures are attached attached. 

wide view.jpg

close view.jpg

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That is where the pigtail will plug in but, you must first remove that gray plastic cap.  Also, you will need a tow converter, an electronic box which makes everything operate correctly.  The converter plugs in farther up the harness, on the right side of the rear cargo area under the panels.  I did all of this to my 2024 RX450h+ several months ago and everything works fine.

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Hello Stefano, thank you for the reply. Can you tell me if this tow converter box is a Lexus part and even if a third party manufacturer can you give me a part number.

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Lexus Tow Converter PT725-48232 from any Lexus dealer and there are several online that will discount it.   I paid around $120.

Curt 56083 Custom Wiring Connector plugs into the gray connector and you can buy it from Amazon for about $20.  Other than that you will need a hitch.  I bought the Torklift Ecohitch and it's great.

 

converter.jpg

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  • 2 weeks later...

Steve, I was under the impression that install instructions would come with the Lexus P/N harness. I bought mine for $122 from an out of state dealer and on the outside of the box was a note to get a copy from the dealer. I can probably figure it out but need a rough idea of the location where it goes. I'm thinking the driver's side behind the second row seat but would like a little assurance. Hours of searching online, including YouTube, was no help.

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It is located on the passenger's (right) side of the vehicle in the cargo area.  You must remove the side panel in order to access it.  It's not difficult, just a bit time consuming.  Attached is the instruction pdf.  My fuse boxes already had the fuses previously installed.

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Thanks. I kept wondering if there were similar harnesses and installation as these instructions are for a 48230. But I even searched for instructions for the 48230 and found nothing useful. Thanks again.

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While I actually haven't had the time yet to install this harness I just wanted to let other forum members know that Steve has been very generous with his time and has provided all the necessary information where I feel 100% confident that I will have no problem with this install. If, after I do make this install, I find any problems or helpful hints for RX350h owners I will add that information to this post.

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