Intermittent Cruise Control Fail

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Jun 13, 2017 | 11:20 AM

KenRebF-250

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Tuned

Joined: Jun 2012

Posts: 293

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From: Central Illinois

Intermittent Cruise Control Fail

For about 6 months the cruise control on our '09 F-250 has been intermittently failing. One time I'll set it and it will work fine, the next time I try to set it and it fails. No particular rhyme or reason to when it fails to set. Some of the tests that I did indicated it was the brake light switch on the brake pedal arm. It seemed to work perfectly a few times that I drove it after the installation but now it's back to working when it wants to.

I had a problem with the cruise on our '06 Ranger and it turned out to be the module. It acted a bit the same way in that it would set sometimes, other time not. I don't know if the two systems are similar or not.

Anyone have this intermittent situation? And if so what turned out to be the problem?

Jun 13, 2017 | 12:06 PM

sxrfun

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Joined: Mar 2011

Posts: 661

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From: Ontario , Canada

Have you read the codes? My cruise on my 08 was intermittent and it set a code....can't recall what code was now...but it turned out to be brake pressure switch on bottom of master cylinder....this is on a 6.4 diesel, of course i am assuming your truck is the same?

Jun 13, 2017 | 01:18 PM

Lossoftraction

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Joined: Sep 2007

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I have a 2010 250 that had the same type problem was the switch on the bottom of the master cylinder like sxrfun . Here is a video about the issue.

Jun 13, 2017 | 08:40 PM

KenRebF-250

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Tuned

Joined: Jun 2012

Posts: 293

Likes: 25

From: Central Illinois

Quote:

Originally Posted by sxrfun

I haven't read the codes. Not sure if it threw a code but we'll be checking it out. Thanks.

Quote:

Originally Posted by Lossoftraction

I have a 2010 250 that had the same type problem was the switch on the bottom of the master cylinder like sxrfun . Here is a video about the issue. https://www.youtube.com/watch?v=mICxnDTTIJI

You may have revealed the culprit since I already replaced the brake light switch in the cab and the only other possibility is the back up switch on the master cylinder. The next question is this: does the video correctly represent the switch and the remove and replace procedure as it would apply to our '09 F-250? If so this could be an easy fix.

Thanks.