210 compressor will set a code if low on freon,that code must be cleared before the compressor wiil engage to finish the charge.
You can read the a/c codes on the a/c control panel,do a search its not hard to do.


Try this http://www.eclassbenz.com/2010/02/how-to-diagnose-air-conditioning-malfunctions/ Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles