Security On Most

This function is used to ensure that all control modules on the MOST network can be used. The MOST network starts in ignition positions I, II or III. The infotainment control module (ICM) checks that all the control modules on the MOST network have a valid serial number. If the infotainment control module (ICM) detects that one or more control modules does not have a valid serial number, those particular control modules will be set to disabled mode. This means that the control module functions cannot be used in the MOST network. The light pulses can only pass through the control module.