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1993 300SD Heater/Defrost Control

[email protected]
Thu, 11 Jan 2018 14:39:45 GMT

My brother’s 93 300SD’s heater after the deep freeze in Charleston stays on w/o pushing the on/off button of the climate control. Only way to turn it off is removing fuse. Was the unusually cold wx a factor, or more likely a failed connection of the control unit? Help!

Paul Duboff
Thu, 11 Jan 2018 15:22:06 GMT

Be grateful that it still works ( more or less)...see our post 1999ML-Obsolescence....the heater failed, and MB no longer makes the parts...we made a world wide search...finally, found a part in Georgia USA after some dead end leads in Europe...