2019 Ram 3500 no brake lights

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Dotman1966

Junior Member
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Mar 12, 2023
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Location
13044
Ram Year
2019
Engine
6.4
Hi we have a 2019 Ram 3500 pickup that we are having issues with the brake lights. The third brake light is working when the brakes are applied, but the brake lights in the tail lights are not working. We are able to get them to work with the computer,. We have replaced the BCM and flashed it. It is a state truck that has a snow plow that we rewired properly using the up fitter wiring at the fuse box. It had been previously hooked up at the trailer plug in the back. Anyone run into such an issue? We have contacted Dodge (STAR) but have not gotten a answer on cause. This is the second truck in our fleet with this issue. Any help would be appreciated. Thanks
 

Rdc527

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Location
Pennsylvania
Ram Year
2019
Engine
6.7 Cummins
Hi we have a 2019 Ram 3500 pickup that we are having issues with the brake lights. The third brake light is working when the brakes are applied, but the brake lights in the tail lights are not working. We are able to get them to work with the computer,. We have replaced the BCM and flashed it. It is a state truck that has a snow plow that we rewired properly using the up fitter wiring at the fuse box. It had been previously hooked up at the trailer plug in the back. Anyone run into such an issue? We have contacted Dodge (STAR) but have not gotten a answer on cause. This is the second truck in our fleet with this issue. Any help would be appreciated. Thanks
 

Rdc527

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Pennsylvania
Ram Year
2019
Engine
6.7 Cummins
I’m having the exact same problem with mine. Any solution?
 
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Dotman1966

Junior Member
Joined
Mar 12, 2023
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Location
13044
Ram Year
2019
Engine
6.4
Not yet but I will share when we find one. The only thing I found that was interesting was someone else said that their rear brake lights didn't work unless the key was on. The third one worked regardless, but tail light brake would not with key off. Will take a look at that on Monday.
 
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