My original question was about tripping a relay when I take the o2 sensor off
So i did not bore everyone with why I was changing it
Sorry for the confusion
Still was informative to me
But still have not found an answer if there is a(oxygen sensor relacement indicator contol module n44/1 ) as the cd from MB says there is
no location nada?

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[B]Mike Y.
00 sl500 sport
88 560 sl (sold)