TVSS- toyota vehicle security system
MMAD- mitsubishi motors audio design
MMVES - mitsubishi motors vehicle entertainment system

how come these manufacturers call it "their" systems, but when these systems develop some kind of trouble, they refer you to another company which doesn't have any relation to them.
the 3 diamond manufacturer is one of the most persistent in making these claims. no offense to the owners of these cars....just curious. :confused: