Question about 2004 Subaru Outback

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Key fob keep on failing to work

2004 legacy.i have had the alarm ecu changed 3 times and i have had a new key fob and the key fob still dose not work as it should every now an then i can not open the car with the fob! so i have to use the key and then type in the pin code to stop the alarm sounding.(subaru) cannot sort it out!!! in fact they cannot even reprogram my key i had to do it my self!they are useless.

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  • Caradog Coombs Jul 30, 2009

    the alarm on my legacy is the standard m30.no mods done to it.however i do live rite by a big tv mast.

  • Caradog Coombs Jul 31, 2009

    hi.the alarm can play up any time anywere.when it is on the blink if i keep perssing the blip/button on the key when i am driveing it starts working againe.if i recode the key with the alarm key pad it works againe but some times it fails againe straight away.when the alarm is on the blink and the siren is sounding and lights are flashing i CAN STILL start the engine from under the hood by jumping a spaner across the starter motor.the new alarm ecu cost me £135 plus the new key fob cost me£65 and the problem is still there.(subaru main dealer)sead that they can not get no comms from the alarm ecu with there computer.they are a bunch of cow boys.

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  • 119 Answers

Sounds like you have a aftermarket system installed,this is most likely interfaced with the subaru keyless,this system needs to be removed to diagnose,i believe the aftermarket system is causing the concern,i've seen many problems arise with these components

Posted on Jul 30, 2009

  • tamaz 68 Jul 31, 2009

    the electrical interference is most likely the problem,does it work fine away from home?

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