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Security light comes on every so often, but car still starts
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Nixed
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PostPosted: Sun Jul 04, 2010 3:00 pm    Post subject:  Security light comes on every so often, but car still starts Reply with quote

I have a 2003 Impala LS with 33,000 miles on it. Every so often, the security light turns on and stays on. The car starts fine, and there doesn't seem to be any other issues. I took the car into the mechanic 2 weeks ago to get a cylinder cap replaced, and that's when it started staying on.

The last time the light went on was in January. Due to area being hit with a couple of blizzards, I didn't drive the car more than a very short distance for several weeks. I thought that the lack of driving was the cause.

Should I take the car in to get checked? I don't want this to become an issue where the car gets stuck on me and won't start.

I've heard changing the ignition Key sometimes help. I guess I'll try that first. I hear it's a little costly to repair the passlock problem.
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PostPosted: Sun Jul 04, 2010 3:04 pm    Post subject:   Reply with quote

You can try using a different key, my security light problems went away for a while after I switched to my lesser used key.

It's not too costly to fix the problem. All you need to do is replace the ignition cylinder. I got mine on eBay for a little over a hundred bucks. Took about 2 hours including the security relearn to replace the cylinder. I haven't had a security light on in the year since I replaced it.

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PostPosted: Sun Jul 04, 2010 3:17 pm    Post subject:   Reply with quote

Thanks for the advice. I think I'll try the other key first. I've never used the other key even once since buying the car.

If it continues, I'll change the ignition cylinder and get a new one off eBay as you suggested.
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PostPosted: Sun Jul 04, 2010 7:25 pm    Post subject:   Reply with quote

the small cylinder goes for $100? Sad

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PostPosted: Sun Jul 04, 2010 7:36 pm    Post subject:   Reply with quote

Yeah. This is the guy I ordered from.

http://cgi.ebay.com/ebaymotors.....ccessories

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PostPosted: Sun Jul 04, 2010 8:06 pm    Post subject:   Reply with quote

Awesome! Thanks again.
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PostPosted: Mon Jul 05, 2010 3:38 am    Post subject:   Reply with quote

I have the same problem. But what I don't understand is how in the heck does a lesser used key make any difference?

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PostPosted: Mon Jul 05, 2010 10:51 am    Post subject:   Reply with quote

Don't question it. Just accept it for what it is. Laughing

In all honesty, I believe it ha something to do with the lesser used key making better contacts within the switch.

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PostPosted: Mon Jul 05, 2010 11:11 am    Post subject:   Reply with quote

You have a 2003 with only 33,000 miles???!? The car is a lost cause now. Nothing will fix the security light issue, and the car will self-destruct in 5,000 miles. Sell the car to me and get something else, or trade with me.

Just kidding, not a lost cause. I wish my car only had 33,000 miles, instead of 100,000 more than that!
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t3chn06789
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PostPosted: Mon Jul 05, 2010 2:20 pm    Post subject:   Reply with quote

im going to try to make a copy tomorrow and try it.

My security light been on for a longg time. already.

Confused

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PostPosted: Tue Jul 06, 2010 12:10 am    Post subject:   Reply with quote

A copy won't help...you'd be making (in essence) - a worn key. Go to a locksmith and have them cut you a fresh key after measuring one of yours...or go to the dealer and get one cut by your VIN number.

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PostPosted: Tue Jul 06, 2010 1:54 pm    Post subject:   Reply with quote

Frank wrote:
A copy won't help...you'd be making (in essence) - a worn key. Go to a locksmith and have them cut you a fresh key after measuring one of yours...or go to the dealer and get one cut by your VIN number.


How much is at the dealer? Question

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PostPosted: Tue May 24, 2011 7:03 pm    Post subject:  Re: Security light comes on every so often, but car still st Reply with quote

Nixed wrote:
I have a 2003 Impala LS with 33,000 miles on it. Every so often, the security light turns on and stays on. The car starts fine, and there doesn't seem to be any other issues. I took the car into the mechanic 2 weeks ago to get a cylinder cap replaced, and that's when it started staying on.

The last time the light went on was in January. Due to area being hit with a couple of blizzards, I didn't drive the car more than a very short distance for several weeks. I thought that the lack of driving was the cause.

Should I take the car in to get checked? I don't want this to become an issue where the car gets stuck on me and won't start.

I've heard changing the ignition Key sometimes help. I guess I'll try that first. I hear it's a little costly to repair the passlock problem.


Same problem. Finally got so sick of it, I went to the dealer and they said it was the BCM. So far they were right.

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PostPosted: Tue May 24, 2011 7:56 pm    Post subject:   Reply with quote

I got some Security lights here and there, and then in the span of a week it didnt want to start twice. Just turned the key and nothing!

I removed the ignition switch, took off the back cap and cleaned the contact points inside. Some were rather corroded (188k miles lol) but cleaned up easily with some steel wool. Havent had any Security lights or non-starts since. Very Happy

The BCM is a common issue on these cars, but so can the ignition switch.

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PostPosted: Tue May 24, 2011 8:08 pm    Post subject:   Reply with quote

Yes ive been a victim latley of the security light and no start. It all started sunday when i went to the gas station to get gas. I filled up and went to start the car and the car wouldnt start and i got a constant security light flash. I kept trying to turn the key to start and nothing. So i let the key sit with the key in off for about 5-10 minutes and turned the key and it started. Since then it has happened once more monday and have gotten the security light flash a few times but today it was all good. Also got a check engine light while all this happened and it was a p1630.


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