Electronics can be more trouble than they're worth in cars. If they made modern cars with no electronics in the engine or controls, maybe I'd buy new cars. It's frustrating when my old Cherokee won't start because the antitheft system is having some kind of conniption for example, and I have to go through this ritual of locking and unlocking the doors, reconnecting the battery with the key in the ignition, flipping this mystery switch the previous owner has no clue about but seems to contribute somehow. There's a process to disable this system by buying a new ECU or something but I haven't gotten around to it.