Key issues with alarm

[Scott995]

Hi all. I have an 08 Honda Accord. The fob isn’t working so I replaced the battery and it still isn’t working. I can open the car manually alarm goes off unless I disable with the unlock/lock/unlock combo. However the alarm will go off when I start the car. What I am wondering is am I better getting a new key and will this sort the alarm issue or do I need to get the alarm issue sorted