Trailer Wiring Harness Options for a 2010 Lexus RX 350 All Wheel Drive

Updated 02/13/2012 | Published 02/12/2012

Question:

how can i tell if i have tow package?

asked by: Randy Y

Expert Reply:

The definitive way to determine if your 2010 Lexus RX 350 has a factory tow package would be to have a Lexus dealer run the VIN number. They will be able to tell you what options the vehicle has.

You could also test the factory connection point for # 56083 or # 118252, see instructions, to see if there is power to the factory plug. However, it may show that it works because it is not under load (a trailer connected). But under load, if you do not have the complete tow package and use # 118252, the trailer lights will not work. This is because the tow package could include additional wiring, fuses, and relays that are not on the vehicle. Having the dealer run the VIN is a much better option.

If you determine you do not have a tow package, you will need to use # 118478. I have included a link to the installation details for this harness as well.

expert reply by: Michael H