Date registered: May 2006
Vehicle: 2000 W202 Mercedes-Benz C250 Turbodiesel
Location: Pretoria, South Africa
Mentioned: 0 Post(s)
Quoted: 25 Post(s)
It's activated by a pressure switch on the a/c drier. You'll need to excavate the system if you want to replace the switch.
Alternatively, and this is what I did, is to connect a relay to the fan (have you actually checked that the fan is working?) which is activated by the compressor's wire.
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2000 Mercedes-Benz C250 Turbodiesel