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Security light on 1999 Buick stays on - LeSabre Buick Cars & Trucks

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  • Ed Woods
    Ed Woods May 11, 2010

    Can you send me a picture of the key? Sec ligght says on usually due to a loss of power to the module or a bad resistor in the key. Does the car still start and stay running. If not you can try putting the key in the ignition and turning it to run (no start). The security light will come on and may even blink. Let it sit for 10 min and then start it. That 10 mins puts the factory sec computer into learn mode ad it can relearn the key value....Other than that if you can clarify the issue I should be able to help you,

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5 Suggested Answers

  • 27 Answers

SOURCE: security light stays on

First place to check would be a fuse.  See if there is one labled security or alarm.  If there is try changing that.

Posted on Sep 20, 2008

psds4
  • 293 Answers

SOURCE: 1999 Buick Riveira that won't start sometimes.

it is probably the ignition lock cylinder neeeds to be replaced it will probably fail alltogether soon

Posted on Sep 22, 2008

  • 150 Answers

SOURCE: 1999 Buick regal Security light on. Won't start.

A remote starter could be the problem. Have you recently gotten a new ignition key? If you have gotten a new key does it have a chip on it? If so is it the right chip? If no chip on key then that is for sure the problem. As long as that light is on after turning ignition to the on position (not start position) the car will not start when turned to the start position. If this doesn't help you out then submit more information and i'll try to help again.

Posted on Feb 19, 2009

  • 12 Answers

SOURCE: 1999 s10 security light is staying on truck wont

if you have a spare key try that sometimes a worn key will trip the security

Posted on Jun 14, 2009

  • 355 Answers

SOURCE: 1999 buick lesabre security light stays on car wont crank

you can bypass the security system entirely like I did. Once and for all. There is a great DIY write-up here http://newrockies.ca - it was the only thing that saved my Park Avenue.

Posted on Jun 03, 2010

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1 Answer

Why wont my 99 Buick regal ls stay running it starts then immediately stalls out


Is your SECURITY light flashing? If so, you have a V.A.T.S. problem. VATS stands for Vehicle Anti Theft System. Try getting a new ignition key made because the resistance value has probably changed in the one you have. If that doesn't do it you'll need to get a VATS bypass.

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My 1999 lesabre when i start it the security light will stay on or go out sometime.


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Jan 20, 2011 | 1999 Buick LeSabre

1 Answer

Security Light


The TDM in the security system (VATS/PassKey) is having problems, it's typical on those cars and it will get worse till the car wont start anymore. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

Nov 28, 2009 | 1999 Buick LeSabre

2 Answers

Security light stay on


u will need to have the dealer test the security system for a trouble code, this can be the key, the key signal sensor or the body control module (BCM) the test will pin point the cause.

Sep 09, 2009 | 1999 Buick LeSabre

1 Answer

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The security system (VATS/PassKey) is dying - same that happened to me. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

Apr 21, 2009 | 1999 Buick LeSabre

1 Answer

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1 Answer

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The security light came on and stayed on during travel time about 20 minutes.

I have had the same problem for years since I bought he car used. When I use the extra set of keys, it does not seem to like them. No problem with regular keys though. Go figure.

Nov 18, 2008 | 1999 Buick Century

1 Answer

1999 Buick Riveira that won't start sometimes.


it is probably the ignition lock cylinder neeeds to be replaced it will probably fail alltogether soon

Sep 06, 2008 | 1999 Buick Riviera

1 Answer

Security light stays on


First place to check would be a fuse.  See if there is one labled security or alarm.  If there is try changing that.

Aug 05, 2008 | 1999 Buick LeSabre

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