2000 Lincoln Town Car
Key Replacement - Save vs Dealer in San Diego

2000 Lincoln Town Car Transponder Key Replacement - Fast, Affordable & Professional

I got a call from a woman parked at the church lot off the main stretch in Ramona, over toward Ramona Highlands. She had already been through it once.

A different locksmith had come out, charged her full price, cut and programmed a replacement key for her 2000 Lincoln Town Car, and the car would not stay running. It would crank, catch, and then die in about two seconds. She got handed a bill and a story about a bad module.

I have seen that exact symptom many times. The engine cranks and fires but the immobilizer kills fuel after a couple of seconds because the key was never written to permanent memory. It is one of the cleaner failure patterns to read once you know what you are looking at. The theft indicator tells the story right away.

I connected to the OBD port, cleared out the incomplete key data from the previous attempt, and ran a fresh programming sequence with the full security access timer allowed to complete. That timed window is not optional. If you interrupt it or move too fast, the system accepts the data temporarily and then drops it. The car acts like it worked until it does not.

After the sequence completed, I had her crank it. Started clean, idled normally, theft light did its prove-out and went off. I walked her through what the light sequence means so she would know the difference going forward.

She had already paid someone else for a job that left her stranded. I got it finished, on site, in the church parking lot. The dealer was an hour away and would have wanted the car towed in. That part she brought up, not me.

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