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Expert Answers about Lexus RX 300


  • Troubleshooting Tekonsha 119251 Running Lights Go Out When Brakes Are Applied
  • Hello David, thanks for reaching out. There are a few things you will want to check here. The first will be to make sure the module has a good ground. You may need to sand the ground area to get rid of any paint or corrosion that could be causing a bad connection. It wouldn't hurt to check the ground on your trailer side too, just to rule that out as a possible cause. Also make sure that the driver and passenger side connectors are installed to the correct wire and that the arrow on the...
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  • Dimensions and Hole Diameters on Optronics License Plate Brackets # LP5SB and # LP10SB
  • I am including pictures of the Optronics Trailer License Plate Mount Bracket, part # LP5SB, and the Optronics Trailer License Plate Mount Bracket, part # LP10SB with the dimensions and hole diameters listed.
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  • Does Wiring Harness for 2001 Lexus RX 300 for Factory Tow Package Require Programming
  • The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # C55245 does not require any programming as it is a simple replacement for the factory 4-flat on your 2001 Lexus RX 300; it does require the fuse be put into the location shown in the accompanying photo I added from the linked installation instructions. If you did not already have the factory 4-flat then this wiring harness would not work and you would instead need the Vehicle Wiring Harness # C59496.
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  • Troubleshooting Wiring Harness Install on 2003 Lexus RX 300
  • The T-One Vehicle Wiring Harness for Factory Tow Package # 118245 is a plug-in for a 2003 Lexus RX 300 and would only require you to place a 20 amp fuse like shown in the accompanying photo and linked video to the install of this part on an '03 RX 300. Uninstall the connector and see if the light on the dash goes off. If so, try re-installing it by following the same steps as in the video. If the light remains on I recommend having your vehicle looked at by a mechanic to determine the issue...
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  • Is Furrion Wireless Camera System Compatible with Bluetooth on Stereo with Monitor Integrated?
  • There are many stereo units like the Jensen # JRV9000R that will allow for camera inputs, but we don't have any Kenwood units to confirm for them. The camera inputs are for hardwired inputs. The Furrion RV Observation Camera System w/ Monitor and Bracket - Wireless - 5" Screen # FOS05TASF is what many RV's are pre-wired to accept and the camera receiver is integrated into the monitor, so it is not compatible with other systems like the Jensen or Kenwood. It does have wireless connection...
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  • What is the Correct Trailer Wiring Harness for a 2000 Lexus RX300 so All Functions on Trailer Work
  • The brake lights on the trailer use the same wire as the turn signals. If your trailer had reverse lights, it would have at least a 5-Flat connector. Since it only has a 4-Flat, you will have both turn signals, brake lights, and running lights, but no reverse lights. A 4-Flat connector is the standard for trailers and reverse lights are not common on most small utility trailers. Installing a regular 4-Flat connector on the Lexus will not work because it uses separate wires for turn signals...
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  • Can the Curt Trailer Hitch Receiver Part # C13429 be used with a Weight Distribution System
  • You are correct that the Curt Trailer Hitch Receiver, part # C13429, is not rated for use with a weight distribution system and should not be used with one. we used to carry a Hidden Hitch that was the only hitch we had for your 2000 Lexus RX 300 that's rated for weight distribution. Another option may be to use a sway bar, like the Reese # 83660, instead of the SwayPro. It'll still fight trailer sway but obviously you would lose the other benefits of weight distribution.
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  • Hardware Size Included with the Curt Hitch # C13426 for a 2002 Lexus RX300
  • The bolt size that comes with the Curt Hitch part # C13429 that you references is M10-1.25x35. That would be the size thread tap you would need. Typically once a vehicle has seen a few winters the weld nuts on the vehicle frame get enough dirt and corrosion in them to require at least a thorough cleaning and sometimes retapping. I also attached an FAQ article on this for you to check out as well.
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  • Does Trailer Coupler Need to be Attached to Trailer Hitch to Properly Test Rear Signal Lights
  • The trailer does not need to be physically attached to your vehicle's trailer hitch to properly test its rear signal lights. As long as all the wiring is correct and connected between the tow vehicle and trailer, everything will test just fine without actually attaching the trailer coupler. In fact, it is better to test the trailer lights with the trailer uncoupled, so you do not experience a false ground.
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  • Recommended Trailer Wiring Harness for 2001 Lexus RX300
  • If your RX300 has the factory tow package, you can use the Tow Ready # 118245 which will plug into the connector located behind the rear bumper (see linked instructions). If your RX300 does not have the tow package, the trailer connector will need to be hardwired into the existing wiring use the Tow Ready # C59496. I will include a link to the general installation instructions as well as to an installation overview video. You will need to access the rear of the taillight assemblies,...
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  • Trailer Wiring Harness for a 2003 Lexus RX 300 without Factory Tow Package
  • The wiring harness you have, # 118245, is designed for a 2003 Lexus RX 300 that came with the factory tow package. Since the harness is not working that is one indicator that you may not have the factory tow package and would require a different wiring harness. For a 2003 Lexus RX 300 without the factory tow package use wiring harness # 46255 you have referenced or # C59236. I have included links to the installation instructions for you.
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  • Troubleshooting 4-Pole Wiring Harness on 2003 Lexus RX300
  • Tekonsha 4-pole wiring kit # 118245 is the correct OEM replacement harness for the 2003 Lexus RX300 with factory tow package. If you checked the fuse and tested the pins on the 4-pole plug and have no power on any of the 3 circuits I suggest you unplug the harness and test the OEM connector on the vehicle where this part plugs in. If you have signals there, upstream of the 4-pole harness, then the harness may be bad. If you do not have signals there then there may be an issue within the...
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  • Cargo Box Recommendations for a 2001 Lexus RX 300 with Factory Roof Rack
  • Yakima cargo boxes will not fit the factory crossbars on your 2001 Lexus RX 300 but Thule does offer cargo boxes that will fit. The Pulse Medium cargo box, # TH614, will fit. This is a 14 cubic foot box. I have included a link to a video review of this box for you. Another option is the 11 cubic foot Force XT Sport cargo box, # TH6356B.
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  • Hitch Receiver for a 2000 Lexus RX 300
  • I have a solution for you but no the Hidden Hitch you referenced does not fit your 2000 Lexus RX 300. The Draw-Tite Max-E-Loader Trailer Hitch Receiver item # 41541 does fit your RX 300. This custom fit hitch will bolt directly to your 2000 RX-300 with included hardware. It does not require any drilling or welding. I have attached an installation video.
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  • 2002 Lexus RX 300 Snow Chains Recommendation Tire Size 225/70R16
  • The Titan tire chains part # TC1555 that you referenced are a confirmed fit for your tire size of 225/70R16 and are a really solid option that's also budget friendly. These provide great traction, install relatively easy, and also provide great clearances. It's hard to say why you say a message that said these wouldn't fit your 2002 Lexus RX300 but these are definitely a fit for your tire size so they would work really well for you. I attached a review video for these for you to check...
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  • Compatibility of Thule Passage # TH910XT with 2001 Lexus RX-300
  • The Thule Passage Trunk Mounted 2 Bike Rack, part # TH910XT is indeed a fit for the 2001 Lexus RX300, but the 3 bike model, # TH911XT, or any 3 bike rack is not compatible, as the hatch on the RX300 does not have sufficient strength to support an additional bike. If you are planning on using the rack frequently, do yourself a favor and check out the Thule OutWay, part # TH45JV. Rather than the 6 strap and buckle attachment system typically found on trunk mounted bike racks, the OutWay...
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  • Does the Shackle Angle have to be the Same Angle on both Sides of my Trailer Suspension
  • Most likely you are fine and the difference in angle is due to the trailer sitting higher on one side than the other. I would still verify that the spring hangers are the same distance apart on both sides of the trailer, and that none of the other trailer components are not worn out. For the 3-Leaf Spring # e57SR that you referenced the recommended distance between the hangers is 25-3/4 inches
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  • Best Trunk Mounted Bike Rack Recommendation for a 2001 Lexus RX 300
  • I have an easy to use trunk mounted bike rack option for your 2001 Lexus RX 300, but no trunk rack is going to allow you to open the rear door with the rack installed. The Thule OutWay # TH45JV would be your best option. What makes this rack far superior to the others is the attachment system. It uses2 retractable coated straps to attach to the vehicle rather than 6 nylon straps like other racks. This makes installation quick and easy and the cables also last longer. The cables store...
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  • How to Determine if the Curt Cargo Basket part # C18115 Will Fit a Roof Rack
  • If the crossbars of your 1999 Lexus RX 300 can be spaced 15, 22, or 29 inches apart on center and are less then 3 inches wide and 1-5/8 inches tall the Curt Cargo Basket part # C18115 that you referenced would fit them well. I attached a review video for this basket for you to check out as well.
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  • Detail K2 Plow Mounting Brackets that Fit 2000 Lexus RX 300
  • Yes the Detail K2 Plow Mounting Brackets part # K285010 is a confirmed fit for your 2000 Lexus RX 300.
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