I called mb and asked for a repair manual. All they have is a CD that is supposed to cover mechanical, electrical, suspension...etc. It costs $70. I am needing to do some work on the heater core ...and am wondering if anyone knows if this CD will cover what I need to know and/or is there something else I should buy to be able to DIY all aspects of my CLK430.

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1999 CLK 430
W208
113. Engine
105,000 Miles
Raptor 245/40/17