Do you suppose

[Rookie]

...the people who engineer these trucks stay up late figuring out how to mess with us on diagnostics? I had an issue where whenever I had the cruise on and then hit the turn indicator, it would shut the cruise off. The first couple of times it happened I thought the CPS was taking a dump. Then I started putting two and two together and noticed it only happened when I was lane changing with the cruise on. So I figure I had a couple of choices, 1) stop using the turn indicator with the cruise during a lane change or B) figure out what was causing it.

So here comes the engineering part...never in my wildest dreams would I have put the lane change in cruise cutting out as a symptom of a brake lamp being burnt out but the cab brake lamp had indeed burnt out. Actually all but melted is maybe the better term. I now need to replace the harness the bulb goes into because it's melted into a hard lump. I've been trying to tie the turn indicator/cruise/brake lamp into something that is connected but just can't seek to wrap my brain around how they would be (got a headache instead) so I gave up and just accepted it as a safety circut that I should have read about in the manual, "Whenever you are using your cruise control and move your turn indicator arm to begin a lane change, be advised that if the cruise disengages, you have a brake lamp that has burnt out". Geez, I should have known...

I have to thank bulrid8 for helping (telling) me what I should look for...

 

[powerboatr]

dude
are you sure your not driving a contour?
the contours were famous for this and it took normal folks ten years to figure it out, ford never really did, they quit making the car.
but the turn signal switch stalk also gets a feed from the brake pedal switch and tail lamps
and, it will cause problems if the one of the two connections gets weak from corrosion or plain disconnects will trip your brake lights to stop working all but the the center high mount, your cruise will kick off if you apply turn signals because it feeds back to the brake switch which is a driver to shut off the cruise
and yes they unplugg over time.
or, the corrosin creatres a higher resistance to current flow which creates heat in the wires and they fail at the weakest point which is usually at teh bulb connction and they MELT the lamp holder,
isnt that nice

 

[Rookie]

See, that's what I mean, "Ford's better Idea"...

 

[rsjohnsn]

Ok, lets see how good you are. When I use the cruise on mine and press the set/accel button my cruise shuts off. When I say "shuts off", I mean you have to completely start over by turning the cruise on and then reset the speed. It doesn't do it all the time but at least 2-3 times in a 1000 miles. I haven't figure it out and the dealer looks at me like I have a bugger hanging out my nose. I can never get it to act up when they are checking it.

Scott

 

[Crumm]

I have to thank bulrid8 for helping (telling) me what I should look for...

For a thanks you should talk him into coming over here where the friendly folks are. I have tried but he won't listen I am not sure that Clayton even has a PSD at the moment thanks to his ex but he is a wealth of knowledge and would be a great asset to the site.

 

[Rookie]

Ok, lets see how good you are. When I use the cruise on mine and press the set/accel button my cruise shuts off. When I say "shuts off", I mean you have to completely start over by turning the cruise on and then reset the speed. It doesn't do it all the time but at least 2-3 times in a 1000 miles. I haven't figure it out and the dealer looks at me like I have a bugger hanging out my nose. I can never get it to act up when they are checking it.

Scott

Geez, I'm not even going to try on this one. I think the never acts up part is also a part of the engineering. The vehicle knows when it's in the shop and there's a program in the computer that overides the issue when a Ford Tech has it. It's one of those hidden embedded things that no matter how many times you pull the fuse to clear the program or clear the codes it stays hidden until you leave the shop and wham...there it goes again...

For a thanks you should talk him into coming over here where the friendly folks are. I have tried but he won't listen I am not sure that Clayton even has a PSD at the moment thanks to his ex but he is a wealth of knowledge and would be a great asset to the site.

I'll shoot him a note and invite him. Maybe if a couple of us put a little gentle preasure on him he may come and visit...

 

[95_stroker]

You might think Ford is messing with you but I believe the intent (from Ford) is if the cruise kicks off for some unknown reason, then the operator will look into it. In this case the operator found a burned bulb which is a saftey hazzard and in some states, a ticket waiting to be written.

 

[rsjohnsn]

The vehicle knows when it's in the shop and there's a program in the computer that overides the issue when a Ford Tech has it.

Since you brought that up, I have a good one for you. The red light that flashes on the dash when use lock the doors with the remote always comes on when the tech connects his diagnostic computer. I believe this is the sensor that tells everything to not act up! The tech has no idea why it does it either.

Scott

 

[Crumm]

I'll shoot him a note and invite him. Maybe if a couple of us put a little gentle pressure on him he may come and visit...

Gentle???? Try