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Immobilizer Issue??

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Old Jul 6, 2021 | 07:29 AM
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Default Immobilizer Issue??

Last night I was running some wire and had the doors open for at least 30 minutes. Afterwards, the car will not start. This is not the first time this has happened. I always end up disconnecting the battery for a minute which I assume resets everything and then I can get it to start.
I've read through numerous posts and didn't see anything that I thought shredded some light on this particular issue.

I have all lights, bells and whistles and the battery read 12.2V. After the reset, everything is fine...until I do it again.

I'm still learning the quirks and nuances of the car so bear with me.
What should I be looking at?

Thanks in advance.



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Old Jul 6, 2021 | 07:04 PM
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Really? Nothing?
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Old Jul 6, 2021 | 07:09 PM
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Define: “until I do it again.”

If the battery voltage drops really low, it can be an issue on this car, but that isn’t the case here. What is leading up to the issue on a regular basis?
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Old Jul 7, 2021 | 05:02 AM
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Originally Posted by Jwconeil
Define: “until I do it again.”

If the battery voltage drops really low, it can be an issue on this car, but that isn’t the case here. What is leading up to the issue on a regular basis?
That would be anytime I have a draw on the battery, i.e. the doors are open while installing a vline or running a scan gauge cable.

The battery read 12 volts, but the car will not start and 30-40 minutes with the doors open isn't draining the battery.

Last edited by wktjr; Jul 7, 2021 at 03:29 PM.
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Old Jul 7, 2021 | 04:14 PM
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I could be wrong, bit I think you need 13V+ to start the car. Will it start with a boost?
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Old Jul 7, 2021 | 07:32 PM
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Originally Posted by Rickna
I could be wrong, bit I think you need 13V+ to start the car. Will it start with a boost?
It will start at 12 volts after I disconnect and reattach the negative terminal.
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Old Jul 7, 2021 | 10:07 PM
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IMHO, you're playing with fire. Read this thread:

https://www.clublexus.com/forums/is-...ont-start.html

Owner finally got it fixed, but it cost an arm and a leg. If you plan to leave the doors open for an extended period, I'd recommend hooking up a charger to maintain voltage while you do this. If you turn the ignition to ACC (not ON or START), it will time out after about 20 minutes and shut off.

I have left the doors/trunk open on mine for relatively long periods but I've never experienced what you are seeing. I also use LEDs for interior lighting, so the current draw is pretty small compared to the factory incandescent bulbs.

How confident are you the battery you have is in good shape? I've had issues with lead/acid batteries and plate sulfation in the past and I've seen it cause weird problems like this.
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Old Jul 8, 2021 | 05:43 AM
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I was thinking the same thing. I’d get a new battery if he hasn’t, and stop doing what he is doing. These cars just don’t like to discharge. It is a fla, but it is what it is.
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Old Jul 8, 2021 | 07:10 AM
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The battery is brand new
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Old Jul 8, 2021 | 10:33 AM
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It can be brand new and still be sulfated. Regardless, you'd be wise to put a charger on it for these extended periods on battery power alone.
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Old Jul 8, 2021 | 02:49 PM
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Originally Posted by lobuxracer
IMHO, you're playing with fire. Read this thread:

https://www.clublexus.com/forums/is-...ont-start.html

Owner finally got it fixed, but it cost an arm and a leg. If you plan to leave the doors open for an extended period, I'd recommend hooking up a charger to maintain voltage while you do this. If you turn the ignition to ACC (not ON or START), it will time out after about 20 minutes and shut off.

I have left the doors/trunk open on mine for relatively long periods but I've never experienced what you are seeing. I also use LEDs for interior lighting, so the current draw is pretty small compared to the factory incandescent bulbs.

How confident are you the battery you have is in good shape? I've had issues with lead/acid batteries and plate sulfation in the past and I've seen it cause weird problems like this.
I did read that as part of my research before I started this post. I will try the battery charger next time to help rule things in or out.
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Old Jul 8, 2021 | 05:25 PM
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Do you have any aftermarket alarm or remote start installed on it? Or has there ever been one installed?
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Old Dec 8, 2023 | 09:30 AM
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Aftermarket alarm? Yes
​​​​​it does
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