Rev + Temp gauge not working

[AidenJohnson]

Hi guys,

Little issue.. my rev gauge and temperature gauge seems to just not be working, all the others are fine though?

 

[Gaz_clio172]

mine is doing this, i would love to know why? my mpg keeps resetting itself, so I'm going to try a new battery and see if that helps the issues as i heard that mpg resetting is due to battery and maybe the rev counter is too.