Goad to hear that is now sorted.
However for sake of clarity and completeness, you obviously have a remote control key fob, in which batteries are replaceable.
The other item i referred to earlier, is an optional extra known as a “Key Tag” which has no buttons, but will perform the same functions automatically as the key fob as long as you have it with you. It is even slimmer than the key fob and it is that one in which batteries cannot be replaced.