How do you disable the seat belt alarm in a Subaru Legacy 2006?

For those of you looking to permanently disable the passenger side alarm (without any beeping ever!) I have figured it out. Bear with me. You need to remove the four bolts holding the seat in place to gain easy access to the seatbelt female side. Unclip the plastic pice on the seatbelt clip female side. It comes off easily with two small screwdrivers. There is a switch located in the seatbelt connecter (it has the red/white wire and black/white wire). Remove the switch from the seatbelt connecter(there are two small tabs holding it in. This switch is the alarm switch. It operates by magnet (crazy, I know). When the seatbelt is clipped in, it pushes a thin piece of brass through this switch which closes the circuit and keeps the alarm from buzzing. All you have to do is insert a small pice of scrap metal through that part of the switch and electrical tape it so it stays in there forever. Now zip tie that switch and wires to the side of the seat (do not re-install it into the seatbelt connecter. Done!!! Put your seatbelt connecter plastic on and bolt the seat in place. No more buzzing - EVER!!

As an improvement to this answer, when the ignition is turned on, simply fasten then unfasten the seat belt ONCE! This works on our 2006 Outback Wagon every time. You need to do this each time the car is turned off & restarted - it doesn't have a memory for this.

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I disagree. You turn the key to the on (as if the car was running) position and fasten & unfasten the seat belt buckle at least 20 X in 30 seconds. (you can hold in the red button, just make sure you separate the buckle each time.) It'll work until the battery is disconnected or the computer is reset. We do about 5-10 a week here as a courtesy to our customers.

probably just a fuse...check the wiring diagram in a shop manual to be certail the airbag isn't also disconnected when you do it...also, wearing your seatbelt usually takes care of this troublesome warning noise...kidding...some vehicles have a plug in relay that is specifically for this...read up on the circuit...:)

a manual will help with diagnosis and repair, and a shop manual should be available at the local library in the reference section for FREE, make copies of the right pages, good luck...:)