Volvo 480 Club Europe

Sorry about this but I have been through all 33 pages and can't find this issue.

My info centre on my 93 480 ES constantly shows inst MPG. Turning the switch makes no difference to the display.
When I am running low on petrol it automatically changes over to range, but returns to inst mpg after
When I start start it up it flicks over and does all its checks etc but returns to inst mpg.

Any ideas or am I just better living with it in case I make things worse?

Thanks in advance

Check to see if the connector on the back of the switch has become detached.

Yeah this must be the switch or connector, all the functions you mentioned are automatic and not controlled by the switch. I pulled mine out this week and the connector is quite flimsy (shock!)

thanks for the replies.
How is the switch removed?
(This is the answer I'm dreading) I really am a bit useless at this kind of stuff.

It's just a push fit into the dash.

Bit of leverage with a scraper or similar and it's out.

thank you