Yes the computerization of our cars is getting extremely complicated.
I'm a living example, my 2011 Jetta TDI DSG, has been at the dealer now for 45 days straight and the issue started in August. The issue is occasionally ( usually within 5 days), once the car is warmed up and you turn left the system looses communication and the transmission goes into safe mode, which causes the DSG transmission to disengage the clutch, thereby loosing all propulsion. Not a good thing when your turning left with oncoming traffic, all you can do is concentrate on getting out of the way of oncoming traffic. The only way to get drive back is to reboot the system, which means coming to a complete stop, putting the car in park, shutting down and restarting the car. Just to make it more interesting, once it does it once, it will do it on almost every left hand turn unless you don't use any power through the turn and your going slowly.
I have no idea how much VW has spent trying to figure this out, they have sent VW Tech assist engineers out to work many days ( at least 6 man days ) on it, and are continually getting the dealership to try different things. They've replaced the rack and pinion ( since there is a sensor inside it), driven it for 100's of km with data recording equipment. They've detached all the wiring harnesses and test them and found one possibly bad wire which they repaired and are now piece by piece are replacing some of the networking wiring (canbus) between modules and possible other failure points. So right now they are waiting on new shifting linkage and a TCM canbus overlay.
It's like a ghost in the machine.
They have given me a free loaner while this is going on, and I've inquired when they are going to put the snow tires on my loaner for the winter!
To top it off, it is also one of the diesels which is involved with the whole scandal to top it off.
Oh I long for the days when our cars were simpler.