Recently, the speedometer needle of my 1995 C280 has been sticking on 0 mph. After driving a short time the needle would swing up and start registering the mph. Today, the needle remained stuck at 0 mph for the entire trip to work (single lane roads, 15 to 20 minutes, 3 stop lights). The odometer continues to record miles driven so it does not appear to be affected. I'm a first time MB owner and don't know much about the way the systems work. Is this an electrical or mechanical problem and how do I fix it?

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Roger Nasteff