Quote:
Originally Posted by ClawSS
Angrybird...aren't those things you listed now code related within the BCM. One glitch in the ignition validates a code in the BCM that engages an electrical solenoid thus overriding/bypassing fail-safe mechanical steering lock?!? You are assuming that the BCM absolutely has to have the mechanically engaged signal for something to happen...it is a big assumption.
Secondly, shifting to neutral in a Toyota situation may not have worked in some cases as the shifters are no longer mechanically connected to the gearbox, but now by wire. You glitch the throttle...lock out the shifter (as done when you try to downshift when your engine is at high RPM or in some possible code that says you cannot shift to neutral when accelerating) you may end up with the out-of-control scenario.
I know that we want to believe in pristine, save your a$$ coding...but sometimes scenarios will pop up that were not tested.
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The ignition switches have nothing to do with the BCM power that controls the steering column interlock. That part is fed from power that is non switchable. You are assuming total failure electrically and mechanically. The problem is it is too easy to turn the switch off, not a actual failure in the electrical portion. It's exactly like if you just were driving along and turn the switch off manually. Try it I bet your steering won't lock up.