There are a few potential fuses that could cause the dash to not work on a 2000 Renault Megane Coupe X-reg. The best course of action is to consult the owner's manual or repair guide for your specific vehicle, which will provide information about the location and rating of the fuses associated with the dash and its components.
Alternatively, you can take the vehicle to a trusted mechanic or auto electrician who can diagnose the issue and replace the necessary fuse(s) for you.
