I have been getting a SID message/warning that says "Lock System Failure". The message was extremely intermittent over the past few months so I didn't concern myself with it. But now seems to be appearing much more frequently. Only appears at time of ignition/startup. It hasn't yet seemed to affect anything that I am aware of. Can anybody provide more detail on the possible genesis of this warning. Also a prognosis of how serious a problem this is? Will it incapacitate the vehicle from starting or running at some point? Or....?