Might want to try measuring system voltage with the thing idling and in park, and the E-brake on, and you're standing to the SIDE.

Perhaps the battery is so weak that it can't operate the electronics correctly. Dead batteries can cause no end of havoc, and the notion that just because it took a charge and started the car must mean that the battery is good is false. Test it to be sure.

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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