You need to change the variant coding of the pushbutton controller. I think it can be done without special tools but the HHT can change it if not.
I am going to Aruba for two weeks starting Saturday and I don't have access to the instructions at home; either to read the code or reset it. Hopefully someone else can post it for you or email me in two weeks and I'll fax it to you.
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician