My 2020 F-150 is hyper flashing on the dash when signaling to the right, but both front and rears right bulbs flash at normal speed. Using hazards, the dash indicators both flash at normal speed and all bulbs flash at normal speed. The left side dash indicator is fine for turn signal and hazards. I haven't changed any light fixtures, so not an issue with LEDs.

Does this sound like an issue with the signal switch on the column? Simply need to replace the switch? Blinker fluid seems fine.

Appreciate any thoughts!

Third brake light?

Side mirror turn signals?

This happened on my old 4runner recently after changing the bulbs. I had to go remove & re-install the bulb to get it seated just right.

NB4 blinker fluid

Thanks for the suggestions. I was hopeful it was something as simple as overlooking the third brake light but no luck - I'll check the bulb connections on passenger side

Hit this same issue two months ago. Turned out that there was a two-element bulb in the taillight that one of the elements burned out on. I checked myself and didn't see itonly noticed when I had someone else press the brakes, and saw one taillight brighten, but not the other. Blinkers, hazards, regular lights all looked fine. A $5 bulb fixed it.

Hope yours is that simple!

Did you make sure both the upper and lower bulbs are working? I'm assuming this is a truck with halogen tail lights, not LED units?

Replacing the lower bulb on the tail light did it! Thanks for the help