I have only once ever had a w126 module fail that couldn't be repaired by either re-soldering cracked joints, or replacing aged electrolytic capacitors.

Of particular importance when you replace the capacitors is to choose ones with the highest temperature rating possible. 105C should be the minimum temp rating for automotive use. Also, be sure to observe polarity!

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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