Help-key not working

[tuscan bev]

Has anyone replaced the battery in the key for a tuscan?
Had the key apart but cant read the number on the battery any one know what it is?
Do you know if it loses all the information as soon as the battery is taken out or say after 30s/a few minutes?
Am I better taking it to the dealer straight away or giving it a go?

[Big Al.]

See your other post

www.pistonheads.com/gassing/topic.asp?h=0&f=13&t=304711