Any ideas on how I can fix this issue?

I've reset the #5 fuse for giggles thinking that could do it. The next idea is to pull out the instrument cluster and see if i can see anything.

That happens on LCD's. Replacement is the only option.

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Yep. I have the same issue on the 2002 ML320, but it went away on it's own. I'm just not going to worry about it.