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What are the signs of a dead Immobilizer?

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I brought my car into the shop when it wouldn't start in my garage. The instrument cluster lit up but the engine wouldn't turn, nor would my radio turn on. The top worked as normal, as did my door locks.

The car has been in a small import garage for 3 WEEKS now, and they claim they've ruled out the obvious, clutch safety switch, etc. but don't have the staff nor some of the equipment to peel the error codes off the computer to definitvely say the immobilizer is gone.

The only positive is that they would put in a used immobilizer if I needed one. If I did that, would the new keys also open the doors/trunk or would I need to put in new tumblers?


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