Odometer resets to 31454

[2003ClassicRDK]

I have the combination Tach/Speedo on my 2003 FLHRCI. It was put on when I bought it new. I noticed last week that whenever I turn the bike off and back on , the mileage goes back to 31454. Is there something I should be checking?

 

[jhandy]

same thing on my 02 wide glide its normal. But a piss poor design again by h. d.