Rear Tail light issue

[mpd3244]

2024 Everglades. Installed a 4 pin tow plug about 6 mos ago. Last week, got the new 7 pin tow kit. Installed hitch, plug, new module and a buddy used forescan to program the trailer module.
Since then, when headlights are on, brake lights engage and rear blinkers don't work. Blinker sound is double speed indicating an issue.

Ideas? We double checked the scan settings already. Could the 4 pin be causing issues? It was fine beforehand. Stumped

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[Valhalla]

check connections
back probe connectors

 

[BadlandsA51]

2024 Everglades. Installed a 4 pin tow plug about 6 mos ago. Last week, got the new 7 pin tow kit. Installed hitch, plug, new module and a buddy used forescan to program the trailer module.
Since then, when headlights are on, brake lights engage and rear blinkers don't work. Blinker sound is double speed indicating an issue.

Ideas? We double checked the scan settings already. Could the 4 pin be causing issues? It was fine beforehand. Stumped

Forscan modifications can have unintended consequences. If he didn’t back up the original software your best bet might be having the dealer do as built and then use FDRS to enable the trailer module.

 

[mpd3244]

Forscan modifications can have unintended consequences. If he didn’t back up the original software your best bet might be having the dealer do as built and then use FDRS to enable the trailer module.

We backed it up, will restore and try again.

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