A sulfated battery can cause random electrical issues when you corner. The sulfates slosh around and temporarily short the battery plates. Whunter hipped me to that scenario when I was having a similar problem with my 300SE. Although in my case, it turned out to be a leaky breather hose.

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-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition