Brake Check: How to Fix a Stuck Brake Light on a Ford Super Duty

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F-150 Brake Light Close

Ford-Trucks.com forum member needs help with his Ford Super Duty’s brake light. Can you help? 

Every once in awhile you come across some issue with your ride that you just can’t figure out. The Ford Trucks Enthusiasts forums are a great place to start. Our forum members have a lot of experience with Ford trucks, and a wealth of wisdom to impart.

Ford-Trucks.com forum member Snapon90 started a thread in the “1999-2016 Super Duty” forums as his break lights are stuck on.

2018 Ford F-150

He explains:

Just had new hydro booster and reservoir put on. Noticed my brake lights were staying on constant. Replaced the relay switch on the brake pedal but they still are staying on, and my auto start won’t start unless I unplug the relay switch. Any ideas?
He was asked if the pedal was depressing the switch, by member VanS,ak, who added that perhaps “they adjusted the pedal also and now it’s making contact with the switch all the time?”
Snapon90 replied:

I couldn’t see an adjustment for the pedal. The pedal is non stop contact to the switch. My rod didn’t adjust. And the pedal is squishy.

So what is causing the issue? If you have some advice, ideas, or know-how, head over to the thread and give Snapon90 some help.

Need help with your rig? Head over to the forums!

Longtime automotive journalist S.J. Bryan has been covering the automotive industry for over five years and is an editor with Ford Truck Enthusiasts and regular contributor to F-150 Online, Harley-Davidson Forums, and The Mustang Source, among other popular auto sites.

Bryan first discovered her passion for all things automotive riding in her parent's 1968 Ford Mustang. The automotive expert cut her teeth growing up riding on Harleys, and her first car was a Chevy Nova. Despite her lead foot, Bryan has yet to receive a speeding ticket.

The award-winning former playwright was first published at age 18. She has worked extensively as a writer and editor for a number of lifestyle and pop culture publications. The diehard gearhead is a big fan of American muscle cars, sixth-gen Ford trucks, and Oxford commas.

S.J. can be reached at [email protected]

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