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ks8780

New guy with a key fob question

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Hello, I am a new member but a long time Lincoln owner ( '08 MKX) . I just picked up a '16 MKX Reserve and have a quick question. I have push button start and 2 key fobs. They both unlock the doors start the car and remote start. Here's the deal. 1 will turn on the what I will call welcome lights and puddle lights when approaching the car and also unlock the door as soon as you touch the inside of the handle. The other will not turn on the welcome lights or puddle lights and seems to unlock the door but you have to pull the handle 1 time first. The welcome lights and puddles will come on if you push the unlock button and of course the door will unlock.

 

Is there a setting somewhere I am missing or what ? Anything to do with MYKey or will only the admin key turn on the lights ?

 

I would like both fobs to act the same. I did change batteries in the one fob but it still acts the same.

 

Thanks

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Definitely sounds like a weak battery in one fob.  Maybe the contacts are contaminated.

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I will pull it back apart and check again and see how many volts the new batteries are at. Maybe my new ones were bad also.

 

Just pulled it back apart. Everything appears clean and correct. Batteries tested 3.1 and 3.2 volts.

 

Thanks

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The fob itself might be flaky.  Definitely sounds like a weak signal.

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I wonder if the fob was for another vehicle like mkc or some other, and it half programmed, or the fob doesn't send exactly the correct signal for the vehicle a MKX. Maybe look at the part numbers inside the FOB... Just a thought....

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1 hour ago, punch-card said:

I wonder if the fob was for another vehicle like mkc or some other, and it half programmed, or the fob doesn't send exactly the correct signal for the vehicle a MKX. Maybe look at the part numbers inside the FOB... Just a thought....

 

Not likely.  These are pretty much binary conditions (it works or it doesn't).  The fact that it hesitates to unlock even when he grabs the door handle along with the lack of approach lighting is what made me think it's a signal strength issue of some kind.

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I once had a similar occurrence involving a Hyundai replacement fob where the programming of both the original & replacement fobs resulted in a completed program installation of the OEM fob but only an incomplete program installation re:  the replacement fob. A re-programming of both fobs solved the issues.

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Worth a shot.

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18 hours ago, Cosmos36 said:

I once had a similar occurrence involving a Hyundai replacement fob where the programming of both the original & replacement fobs resulted in a completed program installation of the OEM fob but only an incomplete program installation re:  the replacement fob. A re-programming of both fobs solved the issues.

If this is the problem can I reprogram the fob myself or dealer only?

 

I think I read somewhere that you need 2 working fobs to do it correctly. I will check the book some more also. 

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ks...Yes, both fobs are required. That is because the 'good' fob's program is reconciled and both 'good' and new fob then receive a compatible new program. Dealers, of course, can program fobs but usually at premium expense. An online (or telecon) search for local locksmiths that have the programming equipment will lead you to local vendors that usually charge less. They will also cut the blade key for the new fob.

 

The topic is somewhat confusing because not all fobs require the same services to duplicate. To my knowledge, the so-called "remote smart" 4-button fobs of push button start vehicles such as MKX-Nautilus not only cost more but demand more complicated programming requiring software that 'lesser' fobs don't.

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The reason you need 2 fobs to do it yourself isn't a technical requirement, it's a safety feature.   You wouldn't want a valet or mechanic to be able to add their own key to your key.

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So.... Is there anything I can do with my 1 fob that works and the other that mostly works at home as far as reprogramming the "bad" fob? 

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If both fobs are recognized you could buy another one and program it yourself.   Otherwise to reset the current fob you'd have to visit the dealer or a locksmith with a Ford IDS.

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That's what I thought also from some research. Thanks

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Just a quick followup. I went to my local dealer and they tried to reprogram the fob but decided it was bad.  They ordered me a new fob as I was still under factory warranty. All is well now.

Thanks

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