 So the rule becomes, and this is why you need at least two keys with every modern car, try a different key. See if the problem goes away. You may save yourself a trip to the repair shop. The bigger problem becomes that you ask somebody for a repair key. How many of you out there know where all your spare keys are? And, yeah, that gets to be an issue. And the funny thing is what keys cost. Not funny, ha-ha, but funny, sad.