I agree w/clear and drive to see what first comes up,

but..seeing what you have now..
I would check the ohms value across the CIS/EZL thermistor and see if they are in fact, not the same. If not , that is a problem.
I would also check for equal tire size/PRI for VSS code ..that will trigger ASR.
Post what you find after clearing and doing those quick checks..

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=21H0MN3YU24S0O0O4F&year=1990&make=MB&model=500-SL-001&category=C&part=Water+Temp.+Sensor