E36 M50 Coupe 1993 Rear Parking Sensor/s - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 04-18-2005, 02:12 PM
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Hi

I have recently purchased a 1993 E36 325i coupe. I was suprised to find it fitted whith what I assume is a factory fitted set of rear parking sensors (perhaps somebody can confirm factory fitted)

Basically they dont work. I have an Auto box and frequently when I shift to reverse after having been driving, they beep constantly for around 4 seconds then stop. other times when I shift to reverse they dont make a sound. In either case when I approach a wall, they never make a sound regardless of how close I get.

I have had the car 2 weeks, and on ONE occasion they worked PERFECTLY. I moved away from the wall and back again a dozen times to test and it was sweet! - but only this once.

This suggests to me the curcuit has power so it cant be fatal? - Also the fact that there is frequently a tone when I shift to reverse gear must be a good sign?

Is there a control unit for this system hidden away somewhere? - Is there anything obvious to check?

Any help would be very much appreciated.
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#2 (permalink) Old 04-21-2005, 06:31 AM
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bad man working is an unknown quantity at this point
Yes it sounds like factory PDC (park distance control) the long tone tells you its got a fault then it turns its self off its probably a faulty sensor get the fault memories check and thatll tell you which one
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#3 (permalink) Old 04-21-2005, 06:40 AM
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gphillips is an unknown quantity at this point
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Quote:
Originally posted by bad man working@Apr 21 2005, 12:31 PM
Yes it sounds like factory PDC (park distance control) the long tone tells you its got a fault then it turns its self off its probably a faulty sensor get the fault memories check and thatll tell you which one
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Thanks for your reply. What do you mean by "get the fault memories check" ?

Is there an easy way to isolate or by-pass a faulty sensor, or identify it? Last night it worked again, but then again stopped working. Clearly a fault, but sometimes is OK.

Thanks
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