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SteveMilner
Member Since: 17 Jul 2012
Location: West Yorkshire
Posts: 131
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Rear Parking Sensors Poor When Wet |
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Recently, when the rear bumper has been wet the rear parking sensors have been a bit of a pain.
There tends to be long single tone beep from the rear on and off for a bit.
When the tone is "off" if the car is near an obstacle at the rear they seem to work OK, and give a tip-bip noise as expected.
When the car is dry, this isn't a problem.
Any suggestions?
I've tries squirting the outside of the sensors with WD40 assuming that water might have got into them, but it doesn't seemed to have improved matters.
Regards,
Steve
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19th Apr 2013 2:04 pm |
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Kingmav66
Member Since: 20 Jul 2010
Location: Gloucestershire
Posts: 1349
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The best thing is to get the fault codes read, then start working out if you have a duff sensor or wiring
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19th Apr 2013 2:06 pm |
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SteveMilner
Member Since: 17 Jul 2012
Location: West Yorkshire
Posts: 131
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I never thought they would have fault codes...
I just thought it was activating as if an object was near.
I'll plug in the IIDTool later today an see if I have any codes related.
Regards,
Steve
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19th Apr 2013 2:08 pm |
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Kingmav66
Member Since: 20 Jul 2010
Location: Gloucestershire
Posts: 1349
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I didn't think they did either until Bodsy told me One of my front ones needs replacing, but haven't got around to it
The wiring can go faulty as well. Clear the existing codes. Then activate the sensors, and check again
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19th Apr 2013 2:16 pm |
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SteveMilner
Member Since: 17 Jul 2012
Location: West Yorkshire
Posts: 131
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No fault codes to read, certainly not in the Parking Aid section, but of course it's dry and there wasn't a problem.
I might have to wait till it's wet again before I try.
Regards,
Steve
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19th Apr 2013 2:48 pm |
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ronaldo
Member Since: 22 Apr 2013
Location: london
Posts: 5
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In my opinion you just check wiring harness in bumper. when it will wet it shorts out you just replace the harness and at the same time if any sensor damage from water replace it.if harness is fine then install new reverse sensor If the sensor and harnesses both are in good condition install new reverse module. mechanic brisbane
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22nd Apr 2013 10:45 am |
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SteveMilner
Member Since: 17 Jul 2012
Location: West Yorkshire
Posts: 131
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I guess to check the wiring harness, the bumper needs to come off.
What I would have expected, assuming water in the bumper harness was the problem, would be problems after driving.
I can park the car, dry and all fine, then after rain (no driving in the rain) the sensors seem to be on the blink.
Surely the module can't fail just when the bumper is wet?
Still not had an opportunity to test when failing, but I may do later when I go out.
Regards,
Steve
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22nd Apr 2013 11:52 am |
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mcsimmo
Member Since: 08 Aug 2011
Location: North of the south
Posts: 1795
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My rear parking sensor does this when its wet, I put it down to water on the sensor face. Man with no D3 anymore, but cant leave the forum....how sad.
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22nd Apr 2013 12:36 pm |
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SteveMilner
Member Since: 17 Jul 2012
Location: West Yorkshire
Posts: 131
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Yeah, that's what if feels like to me.
But before the snow and ice cold snap (the first one, Feb, not the last one) it only did this very very occasionally.
Regards,
Stephen
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22nd Apr 2013 12:37 pm |
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DaveS
Member Since: 15 Aug 2009
Location: Weybridge
Posts: 241
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I had the same problem; rear PDC giving error tone when wet. It was cured by replacing the loom in the rear bumper and none of the individual sensors needed replacing.
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23rd Apr 2013 2:57 pm |
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Curly
Member Since: 30 Sep 2011
Location: suffolk
Posts: 687
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I have all 4 rears clicking and a one tone when put in reverse ? Would it be the loom ?
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28th Sep 2017 12:07 pm |
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