Programming FOB failed HELP or Idea

Big Katuna wrote:
I think you’re correct.
Do the fobs have code numbers on the back for various frequencie?

I do not remember. I do not think so, I think the FCC sets the fequencies and that is part of the model number. There is a ROM chip in the car's moduel and the fob, they must have the same OS programmed in the chips.

Think of it like a mouse and dongal, they are different between a makers mice but they must be matched to one another.

In my family we have a mustang and explorer that use the same fobs, a f150 that is different and a second explorer that is totally keyless. They don't cross match, yet they may be the same frequency..

Did you have the door open?

Ok, here is the problem, after cycling the key on and off the door locks don’t activate to confirm the I can now push any button to program the fob. No door lock cycle after turning key on and off. Next I’m taking it to the dealer.

Maybe this will help.

Clicky

Big Katuna wrote:
I think I remember something about only being able to add a new one only when there are two working already. If one goes bad it won’t let you add a new one.
I may be wrong but a locksmith that specializes in cars will do it and it won’t cost an arm or a leg but he might not want to mess with a third party fob.

okiejoe wrote:
Big Katuna
I only have one fob, the dealership lost the 2nd set and it was a consignment unit so owners have no keys. They gave both sets to dealership .

The mere fact that the fob is not present or is lost does not matter, the computer still thinks two fobs are programmed to it.

Using the dealer programming module they probably de-program BOTH of the currently programmed fobs (the one you have and the one that is lost) and then re-program the two you have.

Charles

I think you’re correct.
Do the fobs have code numbers on the back for various frequencie?

Big Katuna wrote:

okiejoe wrote:
Big Katuna
I only have one fob, the dealership lost the 2nd set and it was a consignment unit so owners have no keys. They gave both sets to dealership .

I’m pretty sure that’s the problem. You need to go to a locksmith or a dealer to add a second fob. After that you can add a third

Needing two is for the chipped keys not for remote keyless entry fobs.

okiejoe wrote:
Big Katuna
I only have one fob, the dealership lost the 2nd set and it was a consignment unit so owners have no keys. They gave both sets to dealership .

I’m pretty sure that’s the problem. You need to go to a locksmith or a dealer to add a second fob. After that you can add a third

If you have done the procedure correctly, the door lock will activate on the 8th time you turn it to on. Just a note, my F150, my DW's Explorer and DGD's Mustang all activate on five cycles. Second note if the lock activates, the current code in the original fob will be erased and need to be reprogranmmed.

You must go from the off position to the on position, not from accessory to start or any variation. Door lock possition and door open or closed nor brake on or off has any effect that I know of.

Use the fob, open door, insert key, turn fron lock to ignition on and then repete 7 more times. If that doesn't work try more cycles. The lock has to cycle and the code will be sent out and the fobs will have to be activated.

Any length of time mentioned is critical.

All numbers on the back of the fobs must match. This is absolutely essential.

If it doesn't work try a qualified tech or locksmith.

Big Katuna wrote:
Or take it to a locksmith that does cars.

Much cheaper than a dealer !