Quote:
Originally Posted by mortanfrl
... E90 318i N43B20A 2007 143ps with 178.000 km... temperature reaches 130° C while driving, [HOW was that determined? Hidden Menu 7.00? InfraRed Thermometer? Aimed WHERE?] doesn't turn on immediately if it is turned off when overheated [please define: does Starter Crank engine? Starter Cranks engine but Engine does NOT fire?]... the radiator blinds remain closed and the fan is not working... Also, all the mentioned above (radiator fan, radiator blinds) work if activated via software interface, they just don't activate when the engine is hot like they're supposed to, and the error codes are: 2E85, 2FAB, 2A2D, 2F11, 30C1, 2E83.
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A) What "Software Interface" do you have? INPA? ISTA?
B) What are Last-7 Characters of your VIN?
HOW are you measuring an Engine Temp Value? Hidden Menu 7.00, Scan Tool/INPA ECTS value is based on ECTS Signal as received by DME, so if Sensor or wiring are bad, you get BOGUS signal.
Suggested DIAGNOSIS Steps:
1) I would FIRST determine is there is an ACTUAL "Overheat" condition (which you MAY have done, but don't mention.
Is there any steam, loss of coolant, knock, gurgling, or other physical symptom of overheat? Have you aimed Infrared Thermometer at ECTS at OFH, and gotten a reading that confirms ECTS Value?
2) 2nd: determine WHY there is an actual overheat situation, OR WHY the DME is getting signal/INPUT of Overheat condition. From what you have posted thus far, it would appear you have an INPUT wiring fault that prevents the DME from activating either the E-Fan or the Upper Blind. They BOTH work on OUTPUT side of DME, when Activated. You indicate you have used "software" to activate both the Radiator Fan (E-Fan) & Upper Radiator Blind.
You suggest that when returned to DME control, both those components cease function/ Close. How long can your software keep E-fan running? How Long can it keep upper Blind open? I presume that same software also allows you to MONITOR function of those components while under DME Control (Status/ Live Data)? Can your Software ALSO monitor Coolant Pump Speed, at least as % of max speed? Can it monitor T-Stat Heater Activation %? INPA can do ALL those & more (System Tests, etc.).
3) Does your 318i N43 have a "Radiator Outlet Temp Sensor" (ROTS) on the Lower Radiator Hose? If so, THAT sensor (or its wiring/connector), rather than the ECTS, MAY be the cause of your issue. As example, my N52K in 328xi does NOT have ROTS, ONLY the ECTS. Yet, the Temp displays for Pump, T-stat & Fan ALL show BOTH ECTS & ROTS values. ROTS is computed, and ALWAYS 7.5C LOWER than ECTS Value, on vehicles with NO ROTS, like my N52K.
If your Software does NOT provide Definition of fault codes, you can always find them using:
https://bmwfault.codes/
Here are the Fault Info sheets for: 2FAB, 2A2D, 2F11, 30C1
https://bmwfault.codes/XMLDiagView?d...gAOQAzADAANAA=
https://bmwfault.codes/XMLDiagView?d...IAMQAxADAANAA=
https://bmwfault.codes/XMLDiagView?d...AANgAxADAANAA=
https://bmwfault.codes/XMLDiagView?d...YAOAAxADAANAA=
Since two of those codes suggest Fuel Pressure & Oil Pressure TOO HIGH, that suggests there MAY be a pinched wiring harness or some other wiring fault affecting Sensor Input to DME.
Please let us know answers to questions above, and if you need test suggestions, please indicate if you have INPA/ISTA, or Make/Model of Scan Tool/ Software available.
George