Security On Most

This function is used to ensure that all control modules on the MOST network can be used. When the MOST network starts up (ignition position I, II or III), the infotainment control module (ICM) checks that all control modules on the MOST network have approved serial numbers. If the infotainment control module (ICM) detects that one or more control modules do not have approved serial numbers, these modules will be set to "disable mode". This means that the control module functions cannot be used in the MOST network. The control module only acts as a conduit for the light pulses.

It takes 30 seconds for the infotainment control module (ICM) to check the control modules. This means that non-approved control modules will be disabled after 30 seconds.