The chip on my key is not working. Can I reprogram the key myself. It rotates but it doesn't turn on. Thanks.
Mi auto no esta reconociendo la llave.Es la unica llave q tengo.La puedo reprogramar sin tener q llamar un locksmith? Gracias
2005 grand marquis
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Hi @alex99751
Here's a video that may help.
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I believe the key is passive as opposed to a FOB that has a battery. Therefore if it is not working, the problem is likely the sensor in the car. It is possible, but unlikely, that the programming got corrupted. If it did, u might have a bigger problem. I found the dealer had better prices than a locksmith YMMV.
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Hi @alex99751
No it won't start as the control module needs information from the key to know that it is the correct one and not just another key that fits the ignition.
You could try reprogramming the key to see if that works.
If not, it may be problem with the key sensor module in the car.
Search online for "Mercury Grand Marquis (insert year model) how to program fob key".
crwdns2934271:0crwdnd2934271:0 jayeff crwdne2934271:0
@jayeff can i reprogram it myself? I don't have $ to call a locksmith. Thanks
crwdns2934271:0crwdnd2934271:0 Alex crwdne2934271:0
@alex99751 It's hard to say; some cars you can and others require specialized equipment. Without knowing the year of yours, we can't look it up for you.
crwdns2934271:0crwdnd2934271:0 Jerry Wheeler crwdne2934271:0