Originally Posted by Qsilver7

If you like to educate yourself more about the General Module aka "GM III" (it's the main controller for the ZKE functions)...then download the PDF at the following link: Loading...

By the end of reading through this BMW document...you should have a greater grasp of a lot of the electronic systems in your car...including EWS/DWA/FZV (immobilizing sytem/central locking system/anti-theft alarm siren system)...and the seat/mirrors/steering column operations etc.

You can see in the topology chart below...how the GM III is the main control module for multiple systems around your vehicle...and if you download the PDF (at the link above)...it will go into detail how all these systems communicate & interact with each other.