Cruise control self test question
Tuned
Joined: Mar 2013
Posts: 343
Likes: 5
From: Plumsteadville PA
2001 F250 SD 7.3 PSD
Was doing a trailer towing road trip too and from Montana. On the way back the cruise control stopped working.
Checked fuse #28. Looked fine.
Attempted to do a self test on the cruise control. Holding the OFF button did nothing. Never went into diagnostic mode.
Button ? A different fuse?
Was doing a trailer towing road trip too and from Montana. On the way back the cruise control stopped working.
Checked fuse #28. Looked fine.
Attempted to do a self test on the cruise control. Holding the OFF button did nothing. Never went into diagnostic mode.
Button ? A different fuse?
Mountain Pass
Joined: Oct 2008
Posts: 212
Likes: 0
From: Okanagan Valley, BC
Any new wisdom on this??? Been reading countless threads about this.
My '03 F-350 6.0 Cruise Control was intermittent for a while and since trying the Self Test procedure, its now completely dead. When it was intermittent, it would often drop off line for me when I engaged it, as if trying to add power as the truck decelerated, then quit altogether, not to come back.
Self test did not work. Never saw any flashes at all.
Horn works. Fuse fine.
Auto transmission.
Sometimes have trouble getting trailer brakes to operate. (maybe related?)
Replaced Brake Pedal switch last year, when I couldn't get the transmission out of Park. (related?)
Any ideas for troubleshooting are appreciated. Thanks.
My '03 F-350 6.0 Cruise Control was intermittent for a while and since trying the Self Test procedure, its now completely dead. When it was intermittent, it would often drop off line for me when I engaged it, as if trying to add power as the truck decelerated, then quit altogether, not to come back.
Self test did not work. Never saw any flashes at all.
Horn works. Fuse fine.
Auto transmission.
Sometimes have trouble getting trailer brakes to operate. (maybe related?)
Replaced Brake Pedal switch last year, when I couldn't get the transmission out of Park. (related?)
Any ideas for troubleshooting are appreciated. Thanks.
Mountain Pass
Joined: Oct 2008
Posts: 212
Likes: 0
From: Okanagan Valley, BC
Hmmm. Just tried doing an instrument cluster test by pressing the Trip Meter (Select/Reset) button while turning the key on. (Park brake on) It entered a test mode where all kinds of parameters were shown by pressing the button repeatedly but what I think is relevant is that the cruise control light never came on when 'bulb' was indicated, and all other lights were illuminated.
Tuned
Joined: Mar 2013
Posts: 343
Likes: 5
From: Plumsteadville PA
Any new wisdom on this??? Been reading countless threads about this.
My '03 F-350 6.0 Cruise Control was intermittent for a while and since trying the Self Test procedure, its now completely dead. When it was intermittent, it would often drop off line for me when I engaged it, as if trying to add power as the truck decelerated, then quit altogether, not to come back.
Self test did not work. Never saw any flashes at all.
Horn works. Fuse fine.
Auto transmission.
Sometimes have trouble getting trailer brakes to operate. (maybe related?)
Replaced Brake Pedal switch last year, when I couldn't get the transmission out of Park. (related?)
Any ideas for troubleshooting are appreciated. Thanks.
My '03 F-350 6.0 Cruise Control was intermittent for a while and since trying the Self Test procedure, its now completely dead. When it was intermittent, it would often drop off line for me when I engaged it, as if trying to add power as the truck decelerated, then quit altogether, not to come back.
Self test did not work. Never saw any flashes at all.
Horn works. Fuse fine.
Auto transmission.
Sometimes have trouble getting trailer brakes to operate. (maybe related?)
Replaced Brake Pedal switch last year, when I couldn't get the transmission out of Park. (related?)
Any ideas for troubleshooting are appreciated. Thanks.
FTE Remembers
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Just to follow up. Mine turned out to be a leaking cruise control switch that is mounted on the master cylinder. I had read that can be a problem and you can usually see it leaking or you can remove it and look for brake fluid leaking into it. Its a recall item on my truck 2000 f350 CC 7.3L and it maybe on yours as well. I took it down to the dealer and gave them the VIN and sure enough it hadnt been done yet so it was fixed for free. so far so good it has been working well. hope this helps and its something as easy as mine.
stay in the closed and over heat the small wires. The fix involved a small
harness that has a set of fuses in it. If you can find the harness for your
model I would get it and install.
Sean
Mountain Pass
Joined: Oct 2008
Posts: 212
Likes: 0
From: Okanagan Valley, BC
Thanks for the follow ups. Looked for recalls online with my VIN and no such luck. Also brought it to mechanic who hooked it up to his computer. No codes, but he did find that the parking brake switch was not working. I hadn't noticed. Either way, didn't get the Cruise Self Test to work.
Hate to - but might have to just start replacing components till it works. Probably start with the switch/harness on the master cylinder - depending on price. I can't live without cruise control.
Hate to - but might have to just start replacing components till it works. Probably start with the switch/harness on the master cylinder - depending on price. I can't live without cruise control.
Senior User
Joined: Mar 2007
Posts: 440
Likes: 0
From: Montana
Thanks for the follow ups. Looked for recalls online with my VIN and no such luck. Also brought it to mechanic who hooked it up to his computer. No codes, but he did find that the parking brake switch was not working. I hadn't noticed. Either way, didn't get the Cruise Self Test to work.
Hate to - but might have to just start replacing components till it works. Probably start with the switch/harness on the master cylinder - depending on price. I can't live without cruise control.
Hate to - but might have to just start replacing components till it works. Probably start with the switch/harness on the master cylinder - depending on price. I can't live without cruise control.
Mountain Pass
Joined: Oct 2008
Posts: 212
Likes: 0
From: Okanagan Valley, BC
Count on it. I too have read countless threads about Cruise Control problems that appear to have remained unsolved. Wish more folks would come back and close up their threads...
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Freshman User
Joined: Jan 2013
Posts: 30
Likes: 0
Its the cruise control deactivation switch. The kapton seal within the switch can deteriorate and allow caustic brake fluid into the switch. The result is a slurry of copper that was degraded from the switch terminals. The degraded switch terminals no longer make contact in their normal position and therefore the circut cannot be completed. Get a cruise control deactivation switch from a buddy or a local auto supply store and install it. Check the function of the switch to verify its working.
Mountain Pass
Joined: Oct 2008
Posts: 212
Likes: 0
From: Okanagan Valley, BC
Yes, I've been reading about that cruise control deactivation switch (aka brake pressure switch??) all over the place and how it gets covered in brake fluid and deteriorates, and I resisted that as a solution to my problem because my switch and harness look almost like new. To eliminate that as a problem beyond any doubt (and because Gangley sounded so certain) I thought I'd fiddle with it a bit, before stopping at the dealer this morning to press them for info about possible recalls (there are none for mine) and part numbers. Lo and behold the damn thing came back to life and worked perfectly on the way to the dealer. So I just cleaned up the contacts on the harness with a dental pick, put some electrical grease on it, and its good as new. (BTW, still can't get the cruise control self test to work on mine - never has. Maybe not programmed for my model)
Senior User
Joined: Mar 2007
Posts: 440
Likes: 0
From: Montana
Yes, I've been reading about that cruise control deactivation switch (aka brake pressure switch??) all over the place and how it gets covered in brake fluid and deteriorates, and I resisted that as a solution to my problem because my switch and harness look almost like new. To eliminate that as a problem beyond any doubt (and because Gangley sounded so certain) I thought I'd fiddle with it a bit, before stopping at the dealer this morning to press them for info about possible recalls (there are none for mine) and part numbers. Lo and behold the damn thing came back to life and worked perfectly on the way to the dealer. So I just cleaned up the contacts on the harness with a dental pick, put some electrical grease on it, and its good as new. (BTW, still can't get the cruise control self test to work on mine - never has. Maybe not programmed for my model)
New User
Joined: Mar 2013
Posts: 9
Likes: 0
I have an issue like this when I do the self test I get 1 flash when I turn the key on holding the off button then 1 flash when I press the on button but I get no flash when I press the resume or set/accell buttons any ideas? 2003 f250 5.4l manual tranny
New User
Joined: Mar 2013
Posts: 9
Likes: 0
I fixed mine I think im the only person ever lol mine would do the diagnostic test giving me the two light error after some digging i tore the clutch pedal switch out and there are two springs in there that were busted up not allowing the switch to go back to pedal up position i moved it manually and everything worked after i installed a new switch 30 bucks later to think i havent had cruise for a year over this thank god it works again
New User
Joined: Oct 2013
Posts: 6
Likes: 0
From: Paramus,NJ
I am a new member and have a problem with my cruise control on my 2003 f250. I changed the brake pressure switch located at the bottom of the master cylinder after reading on line, it is a back up system in case your brake lights fail. How ever that was not the problem. If I find out I will let you know.
New User
Joined: Mar 2014
Posts: 1
Likes: 0
Terrym041 did your truck start without you having to depress the clutch pedal before you replaced the switch. I am having CC problems as well, but had ruled out the clutch pedal switch since my truck will not start without me pushing the clutch pedal down.