2005 E46 330D Convertible - reversing sensors not working

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  1. 2005 E46 330D Convertible - reversing sensors not working 
    #1
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    Hi, when I put the car into reverse I get one long beep for a few seconds and then nothing

    I do have some replacement sensors to hand but any suggestions as to what I can check before taking the bumper off?

    thanks
     
     

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    theres not alot you can do with out taking the bumper off,

    sometimes a spray with wd-40 can disperse the moisture from inside and the work for a while again, but they will stop again

    theres is a guide in my signature, to id what one is borken and howt o change one
     
     

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    Quote Originally Posted by sam1832 View Post
    theres not alot you can do with out taking the bumper off,

    sometimes a spray with wd-40 can disperse the moisture from inside and the work for a while again, but they will stop again

    theres is a guide in my signature, to id what one is borken and howt o change one
    thanks for the quick reply and I will certainly try the WD-40 suggestion and I appreciate the guide also
     
     

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    no problem,

    the wd-40 normally works for a while or untill it rains again, it depends on what has caused the problem, if it dont work at all the only thing to do is take the bumper off and swap them
     
     

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    Quote Originally Posted by sam1832 View Post
    no problem,

    the wd-40 normally works for a while or untill it rains again, it depends on what has caused the problem, if it dont work at all the only thing to do is take the bumper off and swap them
    I bought the car with them that way, one of the few things I missed as it's impossible to check absolutely everything when buying a car especially when it's a car you want and are overwhelmed by other toys/gadgets it already has

    I've looked at the guide and I'm sure I can get the bumper off easily enough if WD-40 doesn't resolve it

    do you know if there is a module at all for the reverse sensors?
     
     

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    Yes, its called a PDC unit

    And its in the boot behind the trim on the battery side,

    As you say you get the beep, I wouldn't be looking at the pdc unit first,

    If you put the car in reverse, with the ignition to 2 listen at the sensors for a clicking,

    If none of them click you may have a problem with the wireing from the pdc unit,
     
     

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    As above, engine off, ign on, reverse gear, get down and listen for clicking at each sensor. Known issues are

    1) duff sensor (£20 used)
    2) broken connector clips at sensor (£3 at BMW)
    3) wires touched the exhaust and burned through (repair)
     
     

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    Quote Originally Posted by joylove View Post
    As above, engine off, ign on, reverse gear, get down and listen for clicking at each sensor. Known issues are

    1) duff sensor (£20 used)
    2) broken connector clips at sensor (£3 at BMW)
    3) wires touched the exhaust and burned through (repair)

    thanks again for the info regarding checking them , especially the exhaust as my exhaust does sit slightly off centre at the moment. Fortunately I've got some new sensors thanks to a mechanic mate and I think he even got me some clips/cables.

    I haven't had time to look at my new car as too busy with other things and my old car is top of the list as it needs a good clean for starters
     
     

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    These sensors are the same items as fitted to the Land Rover Disco 3, they are available brand new from Duckworths Land Rover Parts on Ebay for £19.99delivered. I have just replced one on my 330cd after putting it off for ages due the near £80 price from BMW. They are definately brand new and come in official Land Rover branded packaging.
     
     

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    Great find bryntech, these sensors sell for about £20 second hand so they are indeed a bargain

    Duckworths ebay shop http://myworld.ebay.co.uk/duckworthp...id=p4340.l2559
     
     

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