I have a Merc 220cdi 1999 with Becker 220cdi BE 3100 radio. Was working 100% until I took the battery out to charge it. DOH!!!!!! didn't have code. to reset radio. I downloaded code and tried to input it following the instructions online. It states that I should press button 1 then press it again for 2 etc. Each time I press 1 it just enters one and then skips to the next digit on the right. ANy ideas please?