Thank you both for the quick replies. I will check out the wheel sensors this morning and I'm going to try to make a temporary dip stick. Does anyone know where to get a service book for the SLK I tried on a lot of sites but no one has anything for the SLK.

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Many Thanks
Tom Clarkson

68 Plymourh Roadrunner 13,000 miles, Purchased new from dealer (waiting for restoration)
77 300D with many 84 parts 260,000 + miles Runs great but looks ratty
84 300SD Turbo 205000 miles
My new Baby 2003 SLK230 135k miles