security system reset?

2007 MAZDA CX7
158,000 MILES • 2.4L • 4 CYL • TURBO • 2WD • AUTOMATIC
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RUSSELL ARTHUR MURDOCK
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Car flashes red car/key light. I have replaced battery, the chipped key and car still will not start. I have tried unplugging negative lead on battery and reconnecting it hoping that will clear up the problem that did not work either. Not sure what else to do.
Jun 26, 2017 at 9:59 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
try a security system reset it may have set the security off by disconnecting battery. See link.

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

Please let us know what you find. We are interested to see what it is.
Jun 27, 2017 at 5:35 AM
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AJITPAL SINGH SHERGILL
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Car key sign blinks. I have tried change batteries and all other tricks.but car will not start yet.
Do you have any ideas for that concern?
Feb 18, 2021 at 1:37 PM (Merged)
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DANNY L
  • ✓ASE Certified Mechanic
  • 5,648 POSTS
  • ASE Certified Mechanic
Hello, I'm Danny.

Here is a tutorial on how to reset the anti-theft system. Let's start there first.

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

Scroll down the page to find Mazda. Hope this helps and thanks for using 2CarPros.
Danny-
Feb 18, 2021 at 1:37 PM (Merged)
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