Help !!

I've had my X6-HR for 6 mo. and up till now not had one problem with it. But today the Alt. function stopped working. all I had was - - - - - across the display. I rechecked it several times over about 6 Hrs. then it started showing 19000- 18000 ft. (I live at 4000). The temp. function was also off showing +36 to +45 Deg. F. I've never seen it go that low. When the Alt. came back on I tried to re-calb. the reference Alt. but it would only go down to 8921 Ft.

Any Ideas?

The batt. indicator is not on.

Thanks for your help,
Chris