Yes it is a California car.
What was replaced is something that looked like a big plug in chip (it said MAS on it) which was located behind the cover in the batery compartment. The only other place I can turn now is MB dealership and their screw ups will cost me twice as much.

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Dmitry
90' 300CE
17" Lorinsers RS90
Brulen mufler
Clear Blinkers
White gouges(made my own)