Greetings Anthony,

I've been through your problem already on the same year and model Benz. From the sound of it though you don't have any manuals at all to help you locate parts or their function so let's do it this way. First off, do you get heat to the windshield when you push the defrost button and the engine is at operating temps? If you don't then the next thing is to troubleshoot the problem. Send me your email address and I'll send you the pages out of the manual that describe each sensor and how to troubleshoot them as well as your adjust your temp wheel rheostat. This one was the culprit on my system.
You'll probably find with time that your usual sources for car parts like O'reilly , NAPA etc. should be your last source for parts for your Benz. Try the parts shop right here on this sight such as Fastlane. Most parts you'll require are of better quality and from more reliable manufacturers when they are coming from Germany.


Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan