I just got my 240 awhile ago and today was werid... When I started up my car my miles per hour guage didn't appear.. I sat there and just looked at it.. and about 1 minute later it popped up... is that a sign of it going bad? sorry if I sound stupid.. kind of new to this.. this just happen once... and now it stopped...

 

Is it the light up HUD? They tend to take a while to light up, if they even do light up anymore. Common problem. There are ways to fix it.