The RS is the restraint system. It is normal for it to come on and go out.
The sunroof has a clutch that you can have adjusted tighter and it will not slip in the middle any more. (Do this after cleaning and lubing all of the tracks.)
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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope

1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM