2001 E46 320D - computer problems

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  1. 2001 E46 320D - computer problems 
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    I have a 320D 2001 E46, The previous owner hit a bird and ripped out the outside temp sensor. Since then the temp on the dash has read -40 and the on board computer will not work and the heated rear window comes on every time the ignition is turned on. I have replaced the sensor and all plastic guards also reconnected the horn wires but everything is still the same. Does anyone have any ideas how this can be fixed pleaee help!!!
     
     

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    It's sounds as if the white wires are not making contact with the sensor. You may want to double check.
     
     

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    Have you checked the fuses? the heated rear window will come on if the control panel doesn't work or is unplugged
     
     

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    Yer i have checked all the fuses and they are fine everything else works as normal. I have read that if the temp drops below -37 it aoutomatically turns the heated rear window on but not sure if that is true. I will double check all the connectors tonight.
     
     

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    Do you have power at the fuses for the control panel?
     
     

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    how do you mean control pannel? everything else on the car is working.
     
     

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    Quote Originally Posted by eddiee46 View Post
    how do you mean control pannel? everything else on the car is working.
    Sorry meant OBC, should be fuse 9 IIRC , do you have power at that fuse
     
     

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    The fuse is ok so i will check the power to it at the weekend. i connected the new temp sensor to the ends of the cut off wires, these may be corroded so i will try connecting them further along the wire. the temp reading sometimes changes when its raining.
     
     

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    I have re-wired the sensor further up the wires all the connections are good but still the temp is -40. I can access the OBC by holding the trip reset while turning the ignition on. I have reset the OBC using option 19 to unlock then option 21 to reset now the display on the dash is showing the clock. Pressing the button on the indicator stalk has no affect. The fuse is ok and when removed had no affect. Does anyone know how the computer works? and where is its brain? are there other fuses or relays? i am completly stumped.
     
     

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    I'll look at the schematics for your car and get back to you on this one eddiee46.
     
     

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