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Thread: 2005 Mazda 3 2.3L Hatch Key Fob Help

  1. #1
    Registered Member

    Mazda 3s 2.3L Hatchback Automatic

    Join Date
    Feb 2018

    Thumbs down 2005 Mazda 3 2.3L Hatch Key Fob Help

    I bought my car during the fall last year and never had the key fob works. I do not have the original fob so I did some research and bought a new KPU41846 fob to pair with my car. I have been having issues pairing with my car. At first I was having an issue with the ecu not responding by locking and unlocking but foundout I had to hold in the key pushed into the ignition and have not had a problem with the car responding since. But now after tons of tries with the pairing procedure I still cannot get the key fobs to pair with my vehicle. I went over to autozone and tested the fobs out to make sure they were making a reception and the RF light lit up on the tester.

    I then went to assume that the receiver above the interior lights was no good so I went to grab a couple at the junkyard from another Mazda 3 hatch and a Mazda 3 sedan but still won't work.

    I have the original receiver back in the car

    The above link is what I purchased for the key fobs

  2. #2
    Registered Member concept's Avatar

    2014 Mazda3 S GT auto, 2008 MX5 6-speed

    Join Date
    Mar 2009
    San Diego
    Did you call the free tech support number?

    The person from whom I bought my MX5 bought a second fob from ebay or amazon. He the asked the dealership to pairing ($100). The dealership could not get the aftermarket key fob to work.
    2014 3S GT, Deep Crystal Blue, Eibach Pro-Kit, Enkei PF01s, Koni Sports, Pirelli P ZERO ALL SEASON PLUS tires, 225/45/18
    2008 MX-5 Touring (Mazdaspeed CAI, HIDs, Progress/Koni Sports/Racing Beat sways, SST Magnaflow muffler and tips)

  3. #3
    Registered Member

    2011 mazda3 s hatcback

    Join Date
    Feb 2013
    Here is addl info on FOB
    Many individuals had issues with their purchases on amazon

    how to
    Last edited by geebos; 03-28-2018 at 01:03 PM. Reason: addl info

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