Aftermarket push button, security ignition light flashing. engine will not turn over?

2006 TOYOTA MATRIX

145,000 MILES • 4 CYL • 2WD • AUTOMATIC

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Hi, I bought a car at auction. I was given 2 keys. I never had a problem starting the car before. Neither key has a key fob on it. There are no old remotes on it whatsoever, just the keys. Apparently, the security push button Ignition was installed after the fact by the previous owner. I don't believe it's Toyota period, nonetheless, I can't get the car to start. Change the battery all powers a go. Security light will not stop flashing and the car will not start; can you help please?

Sep 12, 2023 at 10:29 AM

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The first thing I would do is remove the aftermarket security system. Here are the wiring diagrams so you can see how the system works. Next, I would do a hard reboot of the electrical system.

This guide can help:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

A CAN scan may help us as well. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to enlarge)

Sep 12, 2023 at 1:00 PM