Mazda 3 Fix Alarm Going Off Randomly
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- čas přidán 25. 05. 2024
- Fix your Mazda 3 alarm going off spontaneously. Mine is a 2010, but it should be the same for 2008-2012.
Forscan tutorial: • Checking the AU with F...
Removing the door panel: • 2010 2012 Mazda 3 Hatc...
Door switch internals: • Door Light Switch in D...
Applying approx 0.2A of current through the closed door switch sensor should be enough to remove the oxidation. Make sure to cycle the door switch a bunch of times until the resistance consistently reads low.
If you use a 9V battery, you'll want to add a resistor of approx 45 ohms (9V/0.2A = 45). The switch should be able to handle a fair bit more current just fine (the original source I read used 0.6A), but 0.2A seemed to work fine.
It is super annoying when the car alarm goes off randomly. I found a note on my car last night to fix my car alarm, and it was signed the entire neighborhood. It was a very hot day, and I noticed the alarm did go off a lot more. I just unscrewed the hood latch sensor and left it hanging. Mazda 3 definitely makes it difficult to access these wires with all of these damn panels
I took my horn fuse out until I get mine figured out. lights still flash but no horn.
@@JoeLapenna I am having the same issue and I took the horn out as well XD. Seems like a common issue with these second gens. Did you find the fix though ? My mechanic couldn't replicate it cause its very random :(
@@JoeLapennawhat was the problem?
@KingOfOutpost When the doors get hot from the sun, the door latch heats up and the metal contacts since the door is open, setting off the alarm. The problem is figuring out what door it is.
Just an FYI: What you've done will prevent the alarm system from arming. I've heard (unclear if true) that this can increase battery drain, and could be a problem if the car is sitting for longer periods of time.
I was pretty tempted to just cut the wires right at the hood sensor and splice them together. Who cares about their hood being alarmed anyways?! :)