Key Synced but still wont work

Hi guys, Just bought my first e46 - a 2001 330i. I love the car but the keyless entry doesnt work, I tired the re-syncing of the key fob. At the end the doors are supposed to all lock to show that the key was programmed correctly... This happened so I thought I was good! But... The buttons on the key are still ineffective.

Any ideas why? Battery in the key? spare key behaves the same way.

2001 means the battery is dead. Officially you need a new key. Unofficially there is a way to replace the battery. Search the forums.

Whats the difference with 2001? I thought all the diamond shaped keys are supposed to charge through the ignition?

Thanks for the responses guys.

Originally Posted by Lomac

Whats the difference with 2001? I thought all the diamond shaped keys are supposed to charge through the ignition?

Thanks for the responses guys.

that means your 11 year old battery is dead, wont hold a charge anymore.

My key was dead when I first got my car too. I drove with it or a few days and it charged the battery back and it's working fine. If you just got the car, maybe drive for a couple of days and see if the battery charges.