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Registered
2015 Forester XT Touring Automatic
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4 Posts
@andrewtaft Sounds like maybe the key fob isn't recognized by the car anymore, could have wiped the memory for the computer. Was anything else in the car reset? When I used my spare key, a similar thing happened.

Edit - My mistake -- 03-05 probably doesn't have issues with the keyfob...
 

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Administrator
2007 Forester Sports XT 4EAT
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39,000 Posts
@andrewtaft I see this is your first forum post, so welcome to the forum from Oregon! :biggrin:

No issues when the battery is disconnected on our Foresters, with the factory/OEM security system. Have you tired disconnecting the battery to reset the system, just in case the electrical glitched? :confused:

Just in case you need it: How to Idle Re-Learn after Battery Disconnect :icon_eek:

Also...
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Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]
 

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Registered
2005 Forester Automatic
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495 Posts
I replaced my battery and am having trouble with the alarm.Can't start the car and alarm won't shut up
Is this a vehicle that is new to you? Do you know for a fact that it is stock factory? Are your keyless entry fobs stock subaru? could someone have put a vehicle immobilizer on the vehicle, or some sort of aftermarket alarm?

I have heard horror stories of people buying used vehicles with aftermarket alarm or immobilizer accessories. Some of these things are deeply imbeded into the vehicles wiring and a real PITA to remove. And whats more, they can sometimes be "deactivated" but then will "re-activate" upon loss of power (new battery). This originally was a safety feature to make sure that thieves cannot just disconnect the battery to kill an alarm or immobilizer. But you imagine what horror occurs to a new owner when they realize that their vehicle has be immobilized by a system owned by some prior owner, installed in some long lost place, no instructions or information....

I hope this is not your problem.....
 

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Registered
2017 Touring CVT
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126 Posts
cdherman--Your post triggered a slight ptsd memory for me. Years ago I removed the battery from my '97 Outback for a plug change. When I reconnected it the aftermarket anti-theft klaxon horn went off 2 feet from my ears. I instantly aged at least a year. That horn is still in a box in my storage shed.
 
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