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Help fan engine always on bmw X3 E83
29-10-2023, 12:29 PM,
Post: #11
RE: Help fan engine always on bmw X3 E83
Disconnect climate panel, see what happens.
If possible, try with other suitable and working DDE without any manipulation, no need EWS match. EWS inhibits only injectors, other things on the DDE must work now by Kl 15.
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29-10-2023, 14:01 PM,
Post: #12
RE: Help fan engine always on bmw X3 E83
(29-10-2023, 10:46 AM)bmw320d Wrote:  
(28-10-2023, 21:14 PM)bellphegorus Wrote:  this is a m57 mechanikal Waterpump. Fan starts at full speed already when you start the engine?

yes when start engine cooling fan go to max

(28-10-2023, 23:58 PM)kuno24 Wrote:  Check all intake air temperatures and yet double check engine temperature, also gearbox temperature.

I have check temperature cooling engine and temperature intake air, alls the value are ok, temperature of automatic gearbox is correct, in diagnosis bmw write correct

can to be some ecu of car that send temperature wrong and the engine start cooling fan to max?, when ignition is to +15 but not start engine, the frontal shutter of cooling radiator open also with engine cold, when stop ignition the shutter of cooling fan close

Cooling Fan in e83 needs: EngineTemp, Gearbox Temp, Compressor ON Signal, and Refrigerant Pressure,
your Problem is one of this Sensors(or Cabels), or IHKA Control Panel. when you start the engine is the compressor ON?
Try To start with IHKA disconected
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29-10-2023, 22:28 PM,
Post: #13
RE: Help fan engine always on bmw X3 E83
I had fan always on after putting too much AC refrigerant on my M54 E83. Did you do anything with the AC?
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30-10-2023, 14:56 PM,
Post: #14
RE: Help fan engine always on bmw X3 E83
Report, I have check wire sensor temp engine, in diagnosis I have correct value, I have check in diagnosis air sensor temperature and value is correct, I have check temperature of oil engine and gearbox automatic is ok, I have check in diagnosis temperature of mechatronic gearbox and is ok, I have checked AC refrigerant and I have vacuum and refill 680g of ac refrigerant, but always cooling fan on when start, pressure of ac refrigerant is 7/8 bar with ac working
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30-10-2023, 15:12 PM,
Post: #15
RE: Help fan engine always on bmw X3 E83
Is this "7/8 bar" as read from IHKA live data or read from your AC machine pressure gauge???
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30-10-2023, 15:30 PM,
Post: #16
RE: Help fan engine always on bmw X3 E83
(30-10-2023, 14:56 PM)bmw320d Wrote:  Report, I have check wire sensor temp engine, in diagnosis I have correct value, I have check in diagnosis air sensor temperature and value is correct, I have check temperature of oil engine and gearbox automatic is ok, I have check in diagnosis temperature of mechatronic gearbox and is ok, I have checked AC refrigerant and I have vacuum and refill 680g of ac refrigerant, but always cooling fan on when start, pressure of ac refrigerant is 7/8 bar with ac working

did you make a funktion Test with IHKA disconnected? it was sugested twice smile
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30-10-2023, 16:58 PM,
Post: #17
RE: Help fan engine always on bmw X3 E83
solved, the problem is LWS, I have code whole car then coded sensor angle steering, I have start engine and the fan is off, but when I move steering I have error in lws compensation angle, and when restart engine fan go to max, AC system work ok, the problem is lws, crazy car!!!
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30-10-2023, 19:42 PM,
Post: #18
RE: Help fan engine always on bmw X3 E83
LWS hat nothing to do with FAN! You have a Bus Problem Probably..... did you testet it without IHKA( IHKA Disconected)?
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30-10-2023, 21:33 PM,
Post: #19
RE: Help fan engine always on bmw X3 E83
yes I have tried with ihka disconnected and the fan is always on, but when code lws and sensor angle steering fan not go on, tomorrow change lws and test it
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