I’m considering replacing some of my exterior bulbs with LEDs, but I understand the lower resistance or load tricks Ford’s Body Control Module (BCM) into thinking a bulb is burned out, so LED turn signals will blink twice as fast (called “hyper flashing”). The usual solution seems to involve adding 6 Ohm 50W resistors to each tail lamp bulb (or 3 Ohm 50W resistor on each side) but some threads also mention having the dealership re-program the newer F-150 (2011+?) BCM to change the “turn lamp outage feature” or "fast flash" to <OFF> via IDS tool. This setting is available under: Module programming> programmable parameters> exterior lighting (Same place to activate day time running lights).
See SVE Bulletin Q-158R3 “2011MY and later LED Lighting with Body Control Module" (which is for F-250 but apparently works on F-150's and Raptors too).
Some threads claim this completely solved their hyper flash problem without the need for resistors but a couple people said the hyperflash came back in warm conditions (but then went away again during cold mornings or at night). So does this mean it's not a 100% effective solution? (Not the silver bullet we hoped for?)
What is everyone else's experience? Did this work for you? Or did you have to go back and install resistors after all to truly eliminate the problem?
See SVE Bulletin Q-158R3 “2011MY and later LED Lighting with Body Control Module" (which is for F-250 but apparently works on F-150's and Raptors too).
Some threads claim this completely solved their hyper flash problem without the need for resistors but a couple people said the hyperflash came back in warm conditions (but then went away again during cold mornings or at night). So does this mean it's not a 100% effective solution? (Not the silver bullet we hoped for?)
What is everyone else's experience? Did this work for you? Or did you have to go back and install resistors after all to truly eliminate the problem?
