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NO START: Security Light

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Old Mar 19, 2011 | 08:02 PM
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Default NO START: Security Light

Took the car out for a spin today. Weather was great and had a good ole time until i turned off the car. Tried to turn it on, nothing.?.! NOTE: while i was trying to start the engine would turn over as if it were going to start and shut off. Let it sit for several minutes and it started again.

Made it home pulled the codes; all historical (engine light was on until i cleared the codes). Wrote down codes just in case. Started the car several times, pulled codes and yet nothing, however SECURITY LIGHT remains. I have a new FOB and tried it... just in case because one of the historical codes had something to so with security.

My next step is to un-plug the battery to see if it'l reset and maybe give me a new code.

I'm clueless: I've search several forums; although it's mentioned no real answers/solutions have been given.

Thanks in advance for any solutions.
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Old Mar 19, 2011 | 08:26 PM
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is your key resistor dirty?
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Old Mar 19, 2011 | 08:27 PM
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Originally Posted by quicksilver_03

My next step is to un-plug the battery to see if it'l reset and maybe give me a new code.
Go idea, than tell us what it says...

Clear first

Peace
Chip
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Old Mar 19, 2011 | 08:37 PM
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Originally Posted by imavettegirl
is your key resistor dirty?
New Key
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Old Mar 19, 2011 | 08:39 PM
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It sounds like it is key related, Clean the pellet on the key and try that, Hopefully you have another key.
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Old Mar 19, 2011 | 10:32 PM
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I cleaned the keys with a little alcohol and the symptom disappeared… for know at least.

Thanks…
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Old Mar 20, 2011 | 02:49 AM
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If it cleared when you cleaned it that sounds like a dirty resistor pellet is the issue.

The way the VATS works is that a current is passed through the resistor and is detected by the BCM. Once it confirms the value is correct it turns the fuel on and shuts off the security light. The resistor is specific for your car (15 different values available).

The other thing that can affect it is too much weight on the key ring. Some owners who carry around loads of items on their key ring have had issues. Its possible to loosen the key in the ignition barrel so that the resistor loses contact. It can be magnified if your ignition barrel is wearing as the car gets older.

Last edited by DeeGee; Mar 20, 2011 at 02:36 PM.
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Old Mar 20, 2011 | 11:02 AM
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sometimes the easiest solution is the best solution.

cleaning the key resistor was the easiest solution.
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Old Mar 21, 2011 | 07:03 PM
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Originally Posted by DeeGee
If it cleared when you cleaned it that sounds like a dirty resistor pellet is the issue.

The way the VATS works is that a current is passed through the resistor and is detected by the BCM. Once it confirms the value is correct it turns the fuel on and shuts off the security light. The resistor is specific for your car (15 different values available).

The other thing that can affect it is too much weight on the key ring. Some owners who carry around loads of items on their key ring have had issues. Its possible to loosen the key in the ignition barrel so that the resistor loses contact. It can be magnified if your ignition barrel is wearing as the car gets older.
Problem returned with both keys... One is new...

Nothing other than the key and FOB

New Symptom: seat memory will not engage with key...
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