Unfortunately, several SEVERE obstacles stand in the way of any one good solution.
1) The CanBUS was well designed for vehiclular use. It was designed at a time when SAE desgners did nor forsee all the wireless appendages to the system.)
2) There does appear to be any way to patch in some security module(s) as there is no commanding central processor.
3) It now appears there many different ways to compromise the system.
- Cell phone connections to the bus to allow OnStar and others to shut down the system remotely after a crash
- Wi-Fi connections in the car
- Bluetooth modules both in the radio and outside
- The ability to add a tiny PCB onto an existing 12V+ line and yield access to whoever
- Fraudulent replacement parts that appear innocuous and are slightly cheaper than the known brand
4) Any new system would require a significant turnover in tech time, reeducation, and further investment by automotive technicians in a new diagnostic machine. Most of the SAE certified mechanics and technicians have several thousand dollars in equipment to diagnose and monitor the current system.
The current equipment would slide toward obsolescence as fewer and fewer 1996-2016 (?) cars would be on the road each year.
5)
I have a couple of friends and they tell me that the original development of a good CanBUS standard took several years. A replacement standard would take at least as long, as people would try to integrate with current hardware. I do understand that the SAE has several groups working on this, but there has not been any announcements yet.
