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I took my 07 250 psd in to get some small warranty issue taken care of, 4x4 switch was flaky so they replaced it. While I was showing the tech what the problem was he told me I had too many keys on my ring and it would ruin the switch, and that my key had a chip in it. I have a less than a dozen keys, by no means a "schnieder" "janitor" ring. and I didnt think 07 250s had a chip in the key. Was the tech wrong? I leave just an ignigtion key in by it self at least half the time, that way I can leave truck running while Im using keys for something else.
Well I worked at Chevrolet dealership for about a year, and I can recall quite a few times people bringing in their vehicles for that same issue. And that was what they recommended, to only have one or two keys on the key ring. Also found that it was inevitable for the chip to fail over a certain period of time. But what most people didn't know was all you have to do is leave the key in the ignition for about 10 min in the on position and the system relearns the new magnetic field of the chip, and the vehicle will start right up. that was years ago, and for chevy's. so im not sure how similar fords systems are.
Chip or not, lots of keys, that is more than a couple are bad for the lock cylinder. I have always believed this and recommended it. I've seen lock cylinders wear out from it, it also wears the key believe it or not. The weight on the end of the key cause it to side load the cylinder and pins while driving. As well you get the pendulum effect which always moves the cylinder, and key in the cylinder, while driving.
Lots of keys aren't the case on entry locks because they are in and out and don't sit there swinging all the time!
BillyBob, you musta stole my keys 'cause my ring has 9 plus my truck key and fob. Looked identical when I glanced at them. I got the point I have so many masterlock keys ones for work that I now have three seperate rings. I clip them onto the shifter with carabiners, and carry my regular 10-key ring around the rest of the time.
BPofMD is 100% right, no chips until 2008, and I believe it's an option now, and not standard on all trucks.
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