It's been quite some time ago they both stopped working but until now I haven't researched the problem.The temp.guage stopped one (very hot) day when i got in it to go home. Recently it sat at home (in the shade) for awhile, battery died, jumped it and the guage worked again! Put a new batt. in, drove it to work where it sat in the heat. Guess what, it quit that afternoon and hasn't worked since. And what about the chime? replacements for both? Can ya'll help me?