I have a 1990 cadillac coup deville eldorado. I have owned it for several years but all of the sudden the security system will go off randomly. I have to manually unlock the doors and leave it unlocked. Sometimes it works and other times it does not. When it doesn't work, the battery is drained by morning. Can I disable the security system? If so how?

Asked by lolly5783 Dec 29, 2016 at 03:50 PM about the 1990 Cadillac Eldorado Biarritz Coupe FWD

Question type: Maintenance & Repair

I have a 1990 cadillac coup deville eldorado.  I have owned it for several years
but all of the sudden the security system will go off randomly.  I have to
manually unlock the doors and leave it unlocked.  Sometimes it works and
other times it does not.  When it doesn't work, the battery is drained by
morning.  Can I disable the security system? If so how?

GuruC9DN answered 7 years ago

So how do you fix it then just asking because i have the same problem

1 people found this helpful.

Mark helpful

George answered 6 years ago

You would need to replace the Lock Cylinder assembly. It has the " Key Reader" built into it. Or you can Ohm Out the key and put a resistor of the same value at the plug into the pcm wiring harness.

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Your Answer:

I have a 1990 cadillac coup deville eldorado. I have owned it for several years but all of the sudden the security system will go off randomly. I have to manually unlock the doors and leave it unlocked. Sometimes it works and other times it does not. When it doesn't work, the battery is drained by morning. Can I disable the security system? If so how? 2 Answers

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