Thanks to all that posted.

The issue was indeed the bulb in the trunk staying on when closed. After removing the bulb the light on the dash button has gone out. I still need to fix the mechanism but the battery drain is gone.

Thanks!

Tim

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82 380SL 41K miles sold, 98 SL500 44K miles, 13 C300 4Matic, 14 CLA-250 4Matic