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do keys have to be re-coded after battery change?


Duffsaw
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What alarm system ? Sigma !?

If still not working after Battery change you could try reprogramming  & if that fails then will need pick up another fob.

If its Sigma m30 link below on reprogramming, if you don't know then manual pin code set that first while you have one working remote.

http://uk.subaruownersclub.com/forums/topic/306-remote-needed/page-3

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  • 2 weeks later...

its the original keys, and i've asked at the garage, and they've said it shouldn't need re coding.

so is there another weakness in the keys that it could be? anyone had a similar issue?

i've checked the Battery and the key, and no obvious damage, so i'm at a loss.

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What year forester, what alarm system !

as said generally fobs don't need reprogramming due to Battery change.

I have experienced on more than one occasion a fob not working as got itself out of sequence with the alarm due to weak Battery & needed new Battery & reprogram.

If both fobs an issue then possibly receiver on alarm or main alarm ecu fault but reprogramming could be worth a go as first step.

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