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

Tiny
DAWNP
  • MEMBER
  • 2006 TOYOTA MATRIX
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
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?
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Tuesday, September 12th, 2023 AT 10:29 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
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.
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Tuesday, September 12th, 2023 AT 1:00 PM

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