Security light is on

2005 BUICK LA CROSSE
194,000 MILES • V8 • AUTOMATIC
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SESTES7211
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What does it mean when the theft system light is on?
Dec 10, 2010 at 2:12 PM
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STRAILER
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It means there is an operational error in the security system which happens from time to time. This is what you do. Remove the negative battery cable for 30 minutes and then reconnect it. Use the remote to lock and unlock the doors and the system should be reset. Here is guide to help you as well.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
Nov 2, 2017 at 9:01 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.