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- - 2004 Grand Marquis key (https://www.mercuryforum.com/forum/grand-marquis-14/2004-grand-marquis-key-10057/)

LM3	Sep 29, 2018 01:05 PM

2004 Grand Marquis key

Everything I have seen say that you need 2 working keys to program a new key. Can one of them be the valet key?

95 MERC

Sep 30, 2018 08:41 AM

I have changed the ignition lock and key 2wice on the 95 MERC --
No need to "program" anything.
The electronic key fob works exactly the same after an ignition lock key change.

Georgeharry

Nov 20, 2018 10:39 AM

LM3 I ' m trying to find out the exact same thing .

John Gembka

Dec 18, 2018 08:21 PM

If it's the same as the 2005 transponder key... No Valet doesn't have thr transponder in it. I took mine to the dealer and they made the key for free but I had a blank from ebay. It could cost $100 but call all ford dealers in the area and get the cheapest price.. when you have 2 keys you can program them yourself look on you tube for the video it works

Georgeharry

Dec 19, 2018 09:59 AM

Thank you John for the information . Georgeharry .

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