Keypad is dead - new batteries did not help

I woke this morning to find my Keypad dead. I thought that it would be a simple matter of replacing the batteries but new batteries did not help. There is no response when I press any of the buttons. Fortunately I was able to disarm the system with my iPhone app.

And using the app, I checked the system status and much to my surprise the app reports that all is well with no errors. This was surprising to me so I removed the batteries from the keypad and checked once again the system status through the app and it agains reports that there are no errors. So it appears that the base station does not report correctly about the keypad.

Is there a way to reset the keypad or does it need to be replaced?

Thanks...
Chris