Are you sure it is on the inside? The only reason I'm asking is because it's not fun removing the cluster. What's worse is trying the clean the plastic on the inside. Dust and everything in God's wonderful world sticks to it like a magnet. It can be done though. If you decide you want to do this, I will help you out. It will take me a few hours to put the information and pics together, but I have enough info to guide you step by step on how to do it. If you need it, it will be my pleasure to help you.

To answer some of your questions:

1. How it gone inside is the same as me questioning how there were 2 dead flies in my friend's 2004 Range Rover Headlight in a part that is completely sealed. These things are weird and we don't know why they happen.

2. To remove the cluster the coat hangers are one way of doing it.

3. You do have to loosen the speedo cable from underneath.

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz