I recently had a problem putting my 430 into 'reverse' - it didn't work. It only did this once and since has been working normally. Car drives terrific. It has never done this before. So I am thinking maybe something is beginning to go bad and before it breaks I can do something about it. When I open the driver side door, the F1 pump comes on for about 5 seconds and then stops. This seems normal. What I notice, however, is if I close the door and then re-open it, the F1 pump still comes on for a full 5 seconds. I seem to recall it didn't do that before. Sometime the pump would just spin up for 1/2 a second or so and then shut off. Repeated opening and closing the door - the pump now runs for the full 5 seconds. Could this be a problem? Appreciate any insight.