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Intermittent security light

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Old Jun 20, 2014 | 03:01 PM
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c6miller
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Default Intermittent security light

2003 manual; I've read posts from as early as 2008 on the security light staying on while driving. The car always starts and runs fine. Took everyone's advice and made a new key and had the battery checked at Advanced Auto. I still intermittently get the security light. So I ordered a new ignition lock cylinder since that reads the resistor on the key. I did not order the ignition switch. Am I on the right track?

I also have a B2721 code and a bunch others. I cleared all of them as I thought they were related to this code. I started the car and took a short ride and this time the light was not on. Rechecked the codes when I got home and there were none.

Last edited by c6miller; Jun 20, 2014 at 03:11 PM. Reason: codes
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Old Jun 20, 2014 | 10:51 PM
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Originally Posted by 8VETTE7
You made the correct choice. It is a sensor inside the lock cylinder that senses and reads the resistor on the key. The ignition switch is not involved in the security.
Thank you, I ordered the part from my dealer, will be in Monday ($114). I'll remove the old one and bring it to them to fit the tumblers to fit my key.
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Old Jun 21, 2014 | 12:25 AM
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My security light comes on every time I don't let the car go through all the startup lights. Like if I jump in and just start it up.. then the security light stays on till I shut the car off.. if I go slower it shuts off with the rest of the lights. I dunno...
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