Ford Repair Questions? Ask a Mechanic for Answers ASAP
Great question, if parking lamps come on and off with placing paper over the sensor on the dash, seems like the smart junction box has failed, but please do not ignore all wiring, along with GEM module. Chances are the smart junction box is at fault, but Gem is completly possible. Not so easy to help diagnose due to electronics and trouble codes availible by dealer only scanner so I can not gaurentee junction box is bad (fuse box under dash).