Question about 1998 Cadillac Eldorado

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My car has a message that says, Theft system problem, car may not start. My mechanic has tried changing the dash computer, and has checked several of the modules in the car, but it still will not start. I have even had a new key made, but it still won't start. What do I do next?

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  • sugt12 Apr 30, 2010

    Thank you so much for your suggestion. I am not sure what ECU means, but I will share this suggestion with my mechanic and then let you know how it worked out.
    Thanks again.

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  • Master
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You need to remap the ECU as the immobilizer kicked in when you have done all that work telling the car that someone is trying to steal it.

Posted on Apr 30, 2010

  • Alex Jarema
    Alex Jarema Apr 30, 2010

    ECU- Electronic Control Unit, main computer that controls all electric things in your car.

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