mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 15, 2014 22:39:17 GMT 1
The above car is automatic and when I selected reverse the PDC warning message came on display to say no alerts from PDC. On the dash display it shows the vehicle layout and all sensors are working but I still get the warning message which clears after I cycle ignition a few times but it comes back again.
Any thoughts on where to start with this one.
Appreciate any help.
Thanks
Matt
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Post by Noberator on Oct 15, 2014 22:54:43 GMT 1
The above car is automatic and when I selected reverse the PDC warning message came on display to say no alerts from PDC. On the dash display it shows the vehicle layout and all sensors are working but I still get the warning message which clears after I cycle ignition a few times but it comes back again. Any thoughts on where to start with this one. Appreciate any help. Thanks Matt You could have moisture in one of the rear parking sensors.  Has the vehicle been power washed recently or been subject to a lot of rain?  I think you can reset the PDC as follows. Hold the pdc button for 10 second and start the car whilst pressed should do it.  |
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Post by Rhubarb on Oct 15, 2014 23:00:44 GMT 1
Also check battery voltage |
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mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 15, 2014 23:12:32 GMT 1
Thanks for reply. I will try the reset procedure. Car was through a wash but not a jet wash just standard brush type but fault didn't show up for a few days after.
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Post by Noberator on Oct 15, 2014 23:31:05 GMT 1
Thanks for reply. I will try the reset procedure. Car was through a wash but not a jet wash just standard brush type but fault didn't show up for a few days after. If that reset procedure doesn't work you should be able to hear the difference in tones from the rear sensors. |
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mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 15, 2014 23:35:08 GMT 1
Will check them all out to see if I can hear a difference in tone. Are the sensors removed from outside or behind the bumper. Do you have to remove bumper to get at them. It is an M sport model.
Thanks for replies.
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Post by Noberator on Oct 16, 2014 13:36:46 GMT 1
Will check them all out to see if I can hear a difference in tone. Are the sensors removed from outside or behind the bumper. Do you have to remove bumper to get at them. It is an M sport model. Thanks for replies. Not 100% sure if it's bumper off job? If it's one of the outside sensors you might get away with a part removal. Don't go to BM dealer for one there not cheap.  |
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mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 17, 2014 23:28:24 GMT 1
Just an update. I haven't been able to look at problem yet except that when the sensors where displayed on the dash all sensors appeared to be working as I triggered each one in turn which I thought was a good sign.
However today the warning message comes on immediately on start up and not just when I select reverse and it does not clear anymore. Is this now indicating the problem is most likely to be a central control unit. Also the dash is no longer displaying any of the sensors front or rear when I trigger them by hand.
Thanks for any help.
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mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 19, 2014 13:36:41 GMT 1
Striped out unit in boot. Everything dry and clean and all connections looked fine. Reseated all connections. Cycled the ignition several times and also held in the PDC button for 10 secs and started the car. PDC warning was cleared and all sensors working again. went around each sensor and could hear them click as well as display on dash. Drove car thinking problem was sorted but the first time I selected reverse PDC came on again but sensors still displaying. Any thoughts or do I need to get codes read. I have universal reader so will try that but suspect I need BMW capable one for PDC.
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Deleted
Deleted Member
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Post by Deleted on Oct 19, 2014 17:22:49 GMT 1
it will need someone with software that can program /reprogram
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Post by Noberator on Oct 19, 2014 21:59:47 GMT 1
Striped out unit in boot. Everything dry and clean and all connections looked fine. Reseated all connections. Cycled the ignition several times and also held in the PDC button for 10 secs and started the car. PDC warning was cleared and all sensors working again. went around each sensor and could hear them click as well as display on dash. Drove car thinking problem was sorted but the first time I selected reverse PDC came on again but sensors still displaying. Any thoughts or do I need to get codes read. I have universal reader so will try that but suspect I need BMW capable one for PDC. mfk have you physically checked the wiring loom and each sensor for any signs of loose wiring etc? |
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mfk
Tea Maker
Posts: 111
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Post by mfk on Oct 20, 2014 21:31:53 GMT 1
I haven't checked the wiring just the part that is visible in the boot. To check the sensors and the wiring I need to remove bumper. I have now found a rear sensor that is not clicking so that is likely to be the problem. I will get one and try that.
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