strange fog issue in display

i guess you would have to take it apart and clean it. instructions in the service manual.

you could try a blow dryer on it to see if it helps.

 

Welcome to Prius Chat by the way.

 

Don't overlook that the speedometer is a projection; the lens it projects up from is in the bottom surface of the cluster area.

Have you checked that there isn't just some gunk on that? It's not hard for stuff to end up there.

-Chap

 

Ha ha, Chap, you beat me to it.

 

I had something similar with two gen 2 displays. It was on the speedo display itself. This video made it pretty easy to get it out for cleaning.

 

I never had my Gen 2 apart and never knew it was done with mirrors. I do know that mirrors have been used before, my wife's 1960 Buick uses a mirror for the speedometer display.

 

It looks more like dirt in the picture. But in some driving conditions fog seems to gather around that area. If it was just a fog it should disappear when interior warms up a bit or conditions change.

 

OP I can see the defect. Was that problem always like that or was it created by you?

To me it seems like someone was trying to clean the guage.....

 

Sounds more like there is glue or other contaminant or the solvent has ruined the surface. And wet solvent just makes it appear clear. So when the solvent dries it back to bad. I think you just need to replace it.

 

The problem wasn't on the smoke acrylic piece. It was the combo meter itself. From your picture, it looks to me like your defect is on the acrylic piece and not the CM. Either piece would probably clean up the same way if the smoked look is all through the plastic and not a surface coating. Here's what I did.

One of them wiped clean with a slightly damp cloth and then I used a micro fiber cloth to shine it up.

The other one had apparently already been worked on and they must have used a solvent because there were white smears that would not clean off. For that one I used headlight polish on a felt wheel on a Dremel tool at the lowest speed. Even at the lowest speed, it'll melt the plastic if you don't keep it moving to dissipate the heat. If you go that route, try it first in a corner where it won't show if the results are nasty. In fact, if it's the smoked plate rather than the CM, I think I'd use the polish and a soft cloth rather than a rotary tool so that the pressure is more even and you don't leave lines.