Quote:
Originally Posted by Jeremy5848
The aux fan is triggered by (a) coolant temps greater than about 105C...
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Well, it isn't on my 300td. There is nothing that could trigger it. The only two temperature sensing devices are the
sender for the gauge and the
sender for the HVAC (which tells it not to blow air in heat mode until the coolant is warm enough). There is no temperature
switch at all.
In any case, the front mounted fan is still an auxiliary fan, not a primary cooling fan.