Fast Blinking Turn Signal on a Ford F-150.

How to fix a fast blinking turn signal on a ford f-150.
3057 Bulbs 10 pack
S-879 F-150 Bulb Socket
Contact Cleaner
F-150 Tail Light Housing L/H
F-50 Tail Light Housing R/H

[mechanic]

3057 Bulbs 10 pack
S-879 F-150 Bulb Socket
Contact Cleaner
F-150 Tail Light Housing L/H
F-50 Tail Light Housing R/H

[markw]

Mine did the same thing. Changed all bulbs with no joy. Dealer had to reprogram the BCM leaving out the turn signal monitor software. All good now.

[fZionists]

Thank you, sir. I was stumped until you showed we have two rear bulbs.

[rono]

Very helpful. Many thanks from Canada.

[baccracker]

Thank you for posting, It was the perfect solution

[elvism]

I appreciate this video. I had the fast blinking on dash come on but go away then come back several months later, multiple times. I didn’t know both rear lights flashed I taught only top ones flashed and both lights only turned on for braking. Now I know that it’s a bulb. Thanks

[HouseCallAutoRepair]

Excellent example, great insights, and a nice explanation of how the computer is sensing the current draw.

[brianwilliams]

The bulbs can still be bad even if they light up with the running lights the break and blinker won't work but installing new ones fixed my problem

[lindamorgan]

Thank you for your help.. I think you solved my problem, excellent tutorial and no blah blah loud mouth stuff ;-)

[michaelnunya]

A cheap and quick temporary fix for the condensation issue is to drill a small hole in bottom of light housing to allow the water to drain back out.

[CharleneGorman-nbed]

Excellent tutorial, what is the spray called, have same problem

[pmoormann]

Didnt know there was an upper and lower bulb. Thanks

[marioflores]

Good info: I do have the same problem on my F150 work truck

[kinglangren]

My son has the same problem, same truck and I think the same bulb. I’ve been trying to get him to fix it for a year.

[rogeramorine]

What if your fuses are good bulbs are good and the turn signal and brake light still does not on the rear

[ronkrom]

Thanks. This is the same problem I had with a 2014 King Ranch. I don't see water inside, so maybe I won't have the corrosion problem.

[ccjensen]

had the same problem..lower turn bulb..bad connection..good bulb..just needed reseating..easy fix

[witharebelyell]

My 2019 F-150, I had the "fast signal" inside light and yet both turn signals (only one on front, amber color, and one on back) still worked regular...changed them both with recommended bulbs and STILL fast blinker signal inside! Crappers!

[trigatupp]

My night light wont go on through trailer plug, although brakes and tirn signal works fine.

[matthewwilliams]

That’s every vehicles way of saying a bulb is out. It also can mean that you are using a low voltage bulb (led), not “the wrong bulb” without the proper flasher.