I’m new to the forum. I have a 2015 F150 xlt and my front turn signals will not work when headlights are on. Turn signals in mirrors and rear signals work fine. When I hit the turn signal switch inside the can it hyper flashes. No led bulbs factory. I’ve checked and replaced all bulbs and clean the sockets out. I’ve checked what I could find of grounds all seem fine. Any help or suggestions would be greatly appreciated. I can’t get it into the dealer for 2 weeks.

 

1. Do the signals work normally when the headlights are off?
2. Regarding the factory headlights, are they LED or non-LED. Both versions were available.
3. Parking/running lamps normal or not?

 

signals blink normal when headlights are off. Inside the cab they hyper flash in the cluster.

non led headlights

parking lights and running lights normal

 

Do the cluster indicators hyper flash when the outside bulbs are flashing normally (while headlights are off)?

 

Yes outside flashes normal while the inside is hyper flashing while headlights are off

 

Anyone have any ideas ?

 

Have you scanned the BCM for any fault codes?

 

Short circuit on all exterior lights