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Originally Posted by conradtan
Hi everyone. I put a new battery in my key-remote about three months ago, then suddenly today, the alarm stopped arming/disarming. 
There is a bright light in the remote when I press it, it just does not activate/deactivate the alarm. Any ideas? Thanks in advance! |
Try your 2nd (spare) remote key.
Many times the circuit board inside the key fob can have a small crack in the foil and although you see the LED light, there is no signal going to the car.
Also check the fuse on the CLU (central locking unit) located under the driver's seat.
You need to remove the seat and you'll find a small blue fuse on the CLU which is prone to burn in some cars.
Happy Boxstering,
Pedro