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Anti theft system alarm problem

Tiny
JDMARTIN15
  • MEMBER
  • 2005 MAZDA 6
  • 3.0L
  • V6
  • 2WD
  • MANUAL
  • 147,000 MILES
Hello everyone at 2CarPros. I'm Jesse and I have an issue with the anti theft alarm system on my car. It keeps turning on whenever I reconnect the battery and whenever it feels like it, lol. It went off while I was test driving the car last night. The problem with is that it's not just a nuisance, but it activates the emergency lights every time it goes off. I was advised to replace the battery terminals which I did because the old ones wouldn't fit snug due to the stripped bolts. I need help with information on how to disable the alarm system or any other suggestions. Thank you.
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Sunday, June 30th, 2019 AT 11:15 PM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

It sounds like the theft deterrent module is going out. But we should remove the electrical connector and check for corrosion before replacing it. Here is the location so you can check it out. If the module is bad a shop will need to program the new unit which should cost about $130.00. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Tuesday, July 2nd, 2019 AT 3:53 PM
Tiny
JDMARTIN15
  • MEMBER
  • 42 POSTS
Will do. Thank you. Is there a way to disable it for the time being? I can't remove the fuse because it also powers the brake lights and I can only disconnect the horn to silence it, but it still activates the hazard lights.
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Tuesday, July 2nd, 2019 AT 4:19 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
You can't bypass it. The system must be fixed for the car the run, sorry.
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Wednesday, July 3rd, 2019 AT 10:18 AM
Tiny
JDMARTIN15
  • MEMBER
  • 42 POSTS
So I did a reset on the system. While the alarm is going off close everything trunk, hood, doors windows up etc. Lock the car with the key (turn key to the right twice) leave it for 15-20 minutes and then unlock the car after. My alarm hasn't gone off for 3 days, but it does go off when I unplug negative terminal and plug it back in. I've left the battery on and it hasn't gone off. Hopefully this helps anyone with the same issue.
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Saturday, July 6th, 2019 AT 2:41 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Nice work, we are here to help, please use 2CarPros anytime.
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Sunday, July 7th, 2019 AT 1:44 PM
Tiny
JDMARTIN15
  • MEMBER
  • 42 POSTS
Thank you very much. You guys have helped me with a lot. I will refer as well.
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Sunday, July 7th, 2019 AT 1:48 PM

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