* Your car has 15 computers these days.
* You modify it and you get a virus or poorly written software.
* Something happens, the car manufacturer gets sued, and it ain't their fault....
In the "Detroit Business" monthly magazine, a one paged rapid fire interview with Bill Ford a couple of years ago had one question was real interesting. It was something to the effect tell us something about your business we don't know. Mr. Ford said something to the effect 1/2 the cost of your new car is designing it to fend off lawsuits and comply with Government Regulations.
IMHO this is the Legal Departments doing a giant CYA....
Just my 2 cents..
BTW, I don’t take electrical systems or EMF interference lightly. It may or may not be part of the public record, but their was a problem that surfaced with the “bubble gum” law enforcement type lights were put on a certain vehicle and caused the cruise control(?) to go WOT. I know folks that were their when the problem happened and yes it was fixed. The big 4 or 6 or whatever number you want to call them, would want no one of these exogenous issues effecting their profitability via lawsuits..