computer

Hi there, First time on the forum. I recently bought a 2004 RunX 140rs, low milage, single owner, runs like a dream except for one intermittent problem. Very rarely, when i put the key in, the dash lights will come on as per usual, but then, when i turn the key further to start the engine...

Should the digital read of miles-to-empty go off skew from the empty/full needle? I put gas in and the fuel range no longer goes up, but the needle will rise. Is repair needed?