So my window sticker doesn't have it listed, but my build sheet does have it (can get yours here
https://fcacommunity.force.com/RAM/s/equipment-listing)
Can someone take a picture of the suspected hardware/ senor that would be responsible to create this warning. I want to see if I physically have the hardware needed before asking a dealership to troubleshoot software.
I found this -the passenger side tailgate latch contains some sort of sensor to detect when it is in the closed/latched position.
To test this, I opened the tailgate, and then manually (with my fingers) closed each latch, driver side and the passenger side, while the tailgate was fully open.
The driver side latch didn't do anything in regards to the bed lights, nor the tailgate open message.
The passenger side latch turned off the cargo bed lights as well as the tailgate open message when it was manually closed (to open the latches after closing them, press the tailgate open control in the center of the tailgate before trying to close the tailgate). I could control the bed lights and the tailgate open message simply by manipulating this latch open and closed.
So there isn't actually a sensor to detect if the tailgate was actually closed or not, only that the passenger side latch is in the 'latched' position.
So if you are getting that tailgate open message, and your tailgate appears closed, my guess is that the passenger side latch is not fully engaged.
I hope this info helps others to diagnose possible phantom Tailgate Open messages
2019 Ram Bighorn
2.5" level
Fuel Blitz wheels
275-65-20 Duratracs