Last night i opened the key to change the battery but the new battery was the wrong size so i put the old one back in and after that my code that i input into the immobiliser wouldnt work so after messing around for ages i opened ghe key and closed it again and the code started working again lol since that ive been hesitant to touch the battery encase it stops working again.ideally id like to get yhe immobilizer removed.