mikemartin1939
Member
- Joined
- Nov 29, 2012
- Messages
- 22
- Reaction score
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- Location
- Palmyra, VA
- Your Mercedes
- 500SL/1991/8 cyl- SL500/1999/8 cyl
1991 500SL has an MAS module in the right side electrics compartment. It has a rotary knob on top the allows a selection of I (in?) or O (out?). What is the modules use, what does MAS stand for and what effect does the I or O have?
