Troubleshooting Trailer Wiring of 2015 Grand Cherokee That Stopped Working

Updated 05/31/2019 | Published 05/30/2019

Question:

If my trailer lights are not working using my factory installed wiring, do I need to have the bodys contoller reflashed? Is there something I can do to make the lights work?

asked by: Lee

Expert Reply:

If your factory trailer wiring stopped working it's most likely due to blown fuses or relays under the hood of your 2015 Jeep Grand Cherokee. That's what I would check first. From there if everything looks good it would be time to go to a dealer to see if anything needs to be reflashed. Older Ram trucks used to require their TIPM to be reset if the trailer wiring ever experienced a short.

expert reply by: Jameson C