Where is the Keyless Entry code located on [2003] 2004 Lincoln Ls?

[substars]

Can only imagine the complicated process of actually purchasing the Extended License Key after the Trail expires.
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Oddly, I don't believe there's any way to give them money in exchange for a permanent key. I've heard others say you can generate another key though. And you can buy the Android version if you want to send a few bucks their way.

 

[cammerfe]

I've looked and looked and I can't find a code anywhere on my '02. Oh, wait, I don't have keyless...

KS