Originally Posted by Doug 1962

I had a similar problem with my recently acquired 05 roadster.
I removed the old batteries and waited too long before installing the new ones.
The instructions in the owners manual describes how to re-sync the key fab with the car - it works.
Then 2 days ago the key would not work, so I followed the same procedure and now it works fine.
Perhaps I should carry both keys when driving!
Doug 62