8th June 2006, 08:34
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Join Date: May 2005
Location: Johannesburg, South Africa
2001 BMW M5 Imola Red
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TEMP SWITCH AND TEMP SENSOR
Ok a technical question for all the gurus out there...
When looking at the RealOEM.com diagrams for the S62 cooling system, both a temp switch (located in the actual thermostat housing) and a temperature sensor (located in one of the large hoses going in/out of the radiator) can be found.
Now, I assume the sensor actually measures the water temp, and this is evidently what we see in degrees celcius on the OBD when selecting Test 7. But, what is the purpose of the switch at the thermostat, and what does it "switch" on or off?
Part no's are as follows:
Switch : 136 217 03 993
Sensor : 136 214 33077
2001 Imola Red II E39 M5 - Stock