Troubleshooting Left Turn Signal on 2013 Lincoln MKX Not Working While Flat Towing

Updated 06/25/2019 | Published 06/24/2019

Question:

left turn sig. does not work on my 2013 mkx when it is hooked up to my moter home

asked by: Thomas H

Expert Reply:

The first place you want to check is the connector on your motorhome. I'm not sure if you have a 4-Way or 7-Way connector but I have attached diagrams of each for you to reference. Simply use a circuit tester like part # PTW2979 to verify that the left turn pin is actually receiving power. If it isn't receiving power then you need to check for any fuses or relays on your motorhome that are related to the trailer left turn signal and make sure they are in good working order. If they are then the wiring will need to be inspected.

If the connector at the back of your motorhome is receiving power then you need to check the towed vehicle wiring on your 2013 Lincoln MKX. It is very possible that some debris has caused damage or that even your connector needs to be cleaned out.

Let me know if you are still having issues and I can help you troubleshoot further.

expert reply by: Jon G