Okay well I just learned a valuable lesson... the KTMP temperature is not correct when the car is off. I didn't know you could look at KTMP temperature while driving (hold right button for 5 seconds), I was using the KTMP menu when the engine was off (hold right button for 2 seconds, then go to key position 1).
So now the KTMP temperature is matching the ODB temperature while driving. It's just not getting up to operating temperature. Could this be due to a thermostat that is stuck open?
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e53 2005 X5 3.0i
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