On my 99 ML320 I have lost the illumination on both the outside temperature LED and the Clock - Is this simply bulbs that have blown a fuse or something else? Is it easy to fix?

Also the service is overdue and the dashboard keeps showing a flashing light with a picture of a spanner and -600. I dont want to service it at the moment but I wondered is it possible for me to get rid of this somehow?

 

Here here! Same issue just developed on my '99. Any solution to the problem?