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Thread: Keyless Remote Entry FOB

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    Default Keyless Remote Entry FOB

    I have a 2007 Mazda3 GT Sport Hatchback that the FOB no longer locks the doors, nor does it start the car horn and flash the lights if pressed a second time. I had a second FOB (Valet) that also does not lock the doors. I replaced both batteries and verified the circuit boards for the Fobs were ok and still no success. I tried re-programming both Fobs and the results were positive (according to the program guides) however afterwards they still do not lock the doors. In addition, locking all 5 doors works fine when using the key manually outside the door or by pushing the lock / unlock button inside the door. I have checked several Mazda sites and still have no answer. I am thinking it's the Keyless Remote Control Module behind the glove compartment but before purchasing one would like confirmation that the module is bad. I have no idea how to test it. Any help with this would be appreciated, thanks

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    Default Re: Keyless Remote Entry FOB

    One thing I forgot to mention and should have... my apologies. When I first noticed the problem the "door ajar" light on the console went on and stayed on. No matter how many times I opened and closed all 5 doors. I pulled the 15A Room Fuse as the console lights and door ajar indicator were on all the time and using up the battery. When driving the car interestingly enough the door ajar light comes back on and stays on so it must be on a split circuit.

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    Sr Member Noisy Crow's Avatar
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    Default Re: Keyless Remote Entry FOB

    And there's your problem right there.

    FOB won't lock the car if the a door is open...

    Could be a wiring fault, could be a bad switch in one of the door locks.
    2008 Carbon Gray GT Sedan 5 Speed

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    Newbie Rezurexun's Avatar
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    Default Re: Keyless Remote Entry FOB

    TLDR:
    FOB will not lock car when ECU thinks there is a door ajar. Cheers.


    Sent from my iPhone using Tapatalk

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