Reset security?

Turn key on until security light goes out, up to 10 minutes, then turn key off and try to start car. This guide will help

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

Please run down this guide and report back.

Hello,

I have seen the instrument cluster cause this issue. here is the security wiring diagrams to help you see how the system works. To be sure we need to do a CAN scan which you can get a scanner from Amazon for about $40.00.

https://youtu.be/InIlnsjOVFA

Lets check the system fuses as well.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Hello,

In the diagrams below I have sent you the wiring diagrams for the radio circuit in your vehicle. I have also sent a diagram with callout for your vehicle's rear fuse block where the AMP and Radio fuses are located. I would start here and make sure that these two fuses are okay. Here's a link if you are unfamiliar with how to do that:

https://www.2carpros.com/articles/how-a-car-fuse-works

Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros

It is symptomatic of breaking wires at the ignition lock cylinder. These can be intermittent, but will eventually fail. Ignition cylinder replacement is the preferred repair, to keep the system intact. There is means of bypassing it, it would take some labor on your end.

That cannot be done. It wouldn't be much of a theft deterrent if it could be simply disabled that easily. The system HAS to be active and working and that requires a Tech2 scan tool to be able to diagnose it. That usually means dealer.

The most common failure is the ignition lock and the sensor inside of it.

I'll give you the relearn procedure that may or may not help.

PASSLOCK 10 MINUTE RELEARN

AUTO LEARN
Time required, approximately 10 minutes:

1. Insure that the battery is fully charged.
2. Use the scan tool in order to clear the DTCs.
3. Turn the ignition switch from the OFF position to the CRANK position attempting to start the vehicle. The vehicle will start and then stall.
4. Leave the ignition switch in the ON position while observing the security indicator.
5. When the security indicator turns off, which can take up to 10 minutes, turn the ignition switch off. Wait 10 seconds.
6. The BCM and the PCM will learn the new code on the next start attempt.

The key cylinder needs replacing if cluster has a message.
Left and right door cylinders control the alarm
we enjoy your feedback

Without useing a scanner and testing system it's impossible to know. If you want bto suht it off but you will loose auto door locks. Go to trunk find fuse box remove fuse comfort.

The wires breaking in by the ignitions which is a common problem on these car BTW.

Here is the procedure to get to the wires and fix them so the car will start. (Below)

Reconnect the broken wires and you will be all set

Cheers!

Nice work, we are here to help, please use 2CarPros anytime.

Cheers

It sounds like the BCM got wet in the trunk, I would unplug it and looks for corrosion on one of the terminals in the connector then allow the the BCM to dry completely of a couple of days unplugged. Here is a wiring diagram and location (below) and a guide to help you check for power and ground.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please let us know what happens so it will help others.

Cheers, Ken

As`you were told at the other site, you cannot completely bypass a Passkey system and you need a tech2 scan tool to diagnose it.