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Have anyone experienced this? The actual value for the coolant temperature sensor is really weird. It shows -279 volts, and prevents running road test procedures in Star diagnostic tester.
Yet the ECU engine temperature reading is fine, and also the instrument panel.
Normally I would agree, but the engine temperature when measured in degrees celcius is normal when checking the ECU values. Also it shows the correct temperature in the instrument cluser.
I know, right? And the value must be wrong, since this value specifically prevented my mechanic from running roadtest procedures with the Star Diagnosis. Therefore I am thinking it's some kind of ECU problem. I have contacted a mercedes workshop, hoping to see if there are any updates for the ECU software.
I will have to check the temperature sensor, but since the values are good I think that is not the problem.
Back to the start I guess. Soon there is nothing left except the ECU.
I tried cleaning the connectors for Throttle body and Bypass valve. It feels maybe a little bit better, but perhaps placebo. The problems are definitely still there..
09-25-2023, 04:02 PM
