Very nice cars BTW.
I forgot to update my own thread. I went to the fuse box to turn some of the fuses to break up any corrosion. In the process, a couple of them broke. So I replaced the fuses with as many spares I had on hand. All my electrical gremlins disappeared.
I checked the resistence of the pulled fuses(those that didn't break) and there was loads of resistence due to corrosion. I used a wire brush and steel wool to clean them up. Checked the resistence again, none to be found. I will keep these as spares.
I love quick simple fixes, especially when working out side in the falling snow and 27 deg. weather.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member