Progamming an old key..

[Mal]

Originally Posted by slartyblarfast

No offense intended. Chrysler keys have a chip in them but do not require metal to metal contact. I think he is referring to GM keys that have to have metal to metal contact. Chrysler SKIM keys work off of the same principle as SpeedPass and thinks like that. The SKIM module sends a signal to the key to excite the crystal inside the key to transmit.

None taken. I thought it must be that way because the tailgate in mine is hit or miss. Sometimes it will unlock and sometimes not. I'm still gonna try it the next time I find my spare non-chip key.

[Mal]

Indeed metal to metal contact is not required but it's close. With the transponder key sitting on the steering column, the non transponder key doesn't work much less with it in your pocket. If the transponder key is touching or within about 2" of the non transponder key, it works. Interestingly, once the car has seen the key, it no longer cares, you can walk away with the transponder and the non transponder key will keep things going.