Outsie Air Temp +136 degrees F
06-09-2010, 10:30 PM
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99 C230K, 03 ML350
Outsie Air Temp +136 degrees F
I have a 99 C230K. My outside air temp gauge was reading -36 degrees F so I got a new sensor (Febri 0005428418) and after installing it now constantly reads +136 degress F. Is there any reset that has to be do or did I get a bad unit?
06-10-2010, 11:38 AM
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG sold)
Interesting as I dismantled the front bumber and with the sender disconnected it showed -38 degrees Celsius on the display. Apparently this is a default number. Connected the plug and bingo the right temperature came back. Could be a bad sensor or check connections again.
06-10-2010, 09:42 PM
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99 C230K, 03 ML350
-38 degrees must be the open circuit reading as I also get it when no sensor is connected. I tried my ohm meter on the old sensor and it read open circuit. I then tried it on the new sensor and it read zero resistance which would account for the +136 degrees which might be the high reading. I try to exchange my new sensor for another one and see how it goes.
01-08-2011, 09:53 PM
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99 C230K, 03 ML350
On my 99 C230 it is in the grill area of the bumper on the driver's side. The end looks like a small black rod sticking out of a hole. To get to mine I have to pop out a small oval plastic grill. I then can stick my hand in and pull out the sensor from behind. The wire is long enough so that I can pull it out the bumper and unplug the electrical connector. It snaps back into place the same way. Since yours is a 1995 if might be different, but should be in the same general area.
