Brake light
Thread Starter
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Junior User
Joined: Dec 2005
Posts: 55
Likes: 1
From: Vicksburg, MS
Brake light
My truck at work is a 2007 f250 4x4 5.4l . Pretty much since I have had it they red brake light came on off, on off and the buzzer would go off. I took it to the local ford dealer twice and they said they could not make it come on. Had for a week one time. I took it the ford dealer in the town 30 miles down the interstate and they said it was the master cylinder. They changed it and it seemed to fix it for about a week but has since started again. Has anybody had something similar or have any ideas. The truck has 11,400 miles and the only thing we have changed is put on 285/75/17 tires on.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
That could be the ABS or reservoir sensor. Rule of thumb is 10% tolerance, you might want to check your tires, the rear driven tire and both front should be within tolerance to keep the abs light off. It could also be a front sensor or the VSS. If the speedo acts normally, that is usually indicative that the VSS is functioning.
Maybe someone can give you a resistance on the pressure/MC sensor, just for giggles to make sure it's in range.
Maybe someone can give you a resistance on the pressure/MC sensor, just for giggles to make sure it's in range.
