instrument cluster replacement?

You just need to solder a new and more powerful capacitor to get yours working again. If you have a friend who solders, it's an easy job that takes five minutes. Alternatively there's: https://www.texashybridbatteries.com/prius-combination-meter-repair

 

Hardest part is done if you already removed the mfd. repair to capacitor is easy.
Many videos available, here is one

 

I wouldn't go by that video where he piggybacks another capacitor in there. Remove the faulty cap and replace it with a new 220 µF 16 VDC capacitor. I think the original is rated at 110 µF.

 

like I said, there are many other videos on youtube

 

Human nature being what it is, people would assume you are recommending that video.

I was just pointing out it is not the best example of the many videos on YouTube.

 

... which somehow, paradoxically, makes it a very good example of the many videos on YouTube.