I am seeing, usually first, an STC error, tells me to stop safely.
Now is accompanied by the following messages:
ABS Service Required STC Service Required Power Steering Service Required Emission Control Service Required Brake Failure, Stop ASAP
I plug my ODBII scanner in and I get code P1633 (Manufacturer Aux Input/Outputs). I clear the code with the scanner, and all messages go away for awhile, sometimes a day. Sometimes an hour.
Everything seems fine, no power loss or other problems. I understand this computer system uses a CANN system, somehow it multiplexes signals and sends them between the computer modules. Someone suggested that possibly one code could hit a trouble (like STC), and that the data buses can possibly flood themselves causing delays in communication with other sensors. The delays cause the computer to think other systems are down, causing the messages on the dashboard.
I suspect a possible vaccuum leak on the brake booster, I hear a slight hiss - perhaps that is enough to throw the whole system out of whack.
Since so many system seems involved, I also still suspect an alternator problem as well?!?
Has anybody had the combination of problems?
Not happy with my "new" S80s temper.
Deacon Eisenhart