Won't be the first time I have been wrong.
I am sure there are two systems and I think the new system is after at least 96 maybe 98. Maybe we will need someone to look it up. If it makes it till Monday I'll do so.
I stand by the concept I explained in the case of hall effect systems and numbers. I suppose one could rotate the thing backwards with the motor separated from the gear mechnism to run the numbers back up, but it is easier to disconnect the battery or reset with a scanner.
Bosch Master, ASE Master, L1
33 years MB technician