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TdV6Pete
Member Since: 10 Aug 2012
Location: Rutland
Posts: 415
  
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| parking sensors - flashing light |
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Hi all,
When ever I put the car in reverse, there is a long beep, the parking sensor button the the dash flashes then the beep stops (light still flashing) but the sensors dont work? If i push the button the beep stops (because im turning them off.) Has anyone any idea whats going on/where to look 1st. The beep is the rear sensors btw.
Thanks 2inch Lift, 33inch Cooper STTs, Wheel Spacers, Hidden Champion 9000lbs Winch with recovery points, Full Underbody Protection including Rear Bumper Guard, Rock Sliders, Snorkel, 4x4 screen enabled and Sat Nav on the move (thanks to Bodsy), Discreet LED roof lights, LED work light, BAS Re-map and EGR's blanked, V8 Brake upgrade with Grooved, Drilled and Slotted Brakes, Halo Fog Lamps, Roof Rack, 240V Inverter, CB radio and finally a Swing away wheel carrier with Hi-Lift mount...
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 23rd Apr 2013 8:45 pm |
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ije44
Member Since: 08 Mar 2013
Location: Leicester
Posts: 103
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I'll be watching this thread with interest as I have exactly the same symptoms.
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| 23rd Apr 2013 8:48 pm |
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Navigator
Member Since: 17 Mar 2010
Location: Stay at Home. One of the lives you save could be your own.
Posts: 5103
  
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And mine has started this now as well. Maybe it is programmed into one of the computers to do this at a certaim mileage. A vaccine does not stop you catching a virus, or passing it on, or getting ill from it, really ill. It does reduce the likelyhood of you dying when really, really ill. Stay Alive - KEEP AWAY FROM PEOPLE.
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| 23rd Apr 2013 9:02 pm |
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ije44
Member Since: 08 Mar 2013
Location: Leicester
Posts: 103
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That could be true. I know that reaching 44 years old my back has started to creak.
Might need connecting to a faultmate. 
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| 23rd Apr 2013 9:23 pm |
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StornowayStu
Member Since: 10 Aug 2012
Location: Austin TX
Posts: 331
  
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Well without pulling the exact fault codes this is basically "PDC broken"
In my case it was a problem with the rear loom running along the rear bumper where it looked like someone had tried a bodge repair with tape (probably chafed against the bumper cover and chassis) but it might be a sensor gone rogue. If you have the front PDC too, then it could be problems at the front even though you're in reverse.
Those who use pressure washers on their Landy should be careful about blasting too directly into the sensors as I think that is report to upset them. As is mud. Maybe heavy fog too.
Long story short, probably best to get some idea of the problem area by getting the faults read than just throwing parts at it...I have a spare sensor sitting on my bench for just that reason. It was the wiring loom....
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| 23rd Apr 2013 9:29 pm |
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robbo770
Member Since: 29 Jan 2013
Location: Aberdeenshire
Posts: 2294
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most likely one of the rear sensors is full of water, this gives this fault and they are very prone to it!!
only thing you can do is tap each one and see if it bleed some water out around the ring you can see, if so it is most likely toast,
I did this and found the one that was U/s and replaced it and all is well again, but I know the other inboard one is not far from the same death!
so soon to be fitting another one.
check my posts there is some photo's of changing without removing te bumper!
cheers
Rob FFRR SC 4.2
Rejected!! RRS2
Fit TDV6 intercooler hoses
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De-Cat pipe
D3 to B4 front end Upgrade
OEM TV/DVD Screens+wireless Headphones!
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| 23rd Apr 2013 9:47 pm |
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ije44
Member Since: 08 Mar 2013
Location: Leicester
Posts: 103
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Thanks S.Stu and Robbo770
Gives me something to go at.
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| 23rd Apr 2013 10:37 pm |
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Andrew Hebron
Member Since: 16 Jan 2009
Location: Teddington
Posts: 501
 
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For those with this problem in a manual Disco, does the gear display work OK?
I had the PDC issue when the manual gearbox had "lost" which gear it was in, and the gear display on the dash was lagging. As it didn't recognise it was in R, the PDC didn't work. I then did the reprogram process and all was well. Has happened twice. I don't think it is relevant to autos. Andrew
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| 23rd Apr 2013 10:44 pm |
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A.J.M
Member Since: 31 Oct 2009
Location: Carluke
Posts: 2815
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Mine does something similar, but i have the 2 inner sensors on the back, with damaged faces.
Have 2 new sensor's to get fitted on saturday and going to clean up the full loom and connectors and test the system to make sure it's working again. 
Till then, i'm just switching it off when i start the car up. As it annoy's me so i shut it up.
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| 23rd Apr 2013 10:58 pm |
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TdV6Pete
Member Since: 10 Aug 2012
Location: Rutland
Posts: 415
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How do people know which out of the 8 sensors is it? Does it have to be read off fault codes?
Thanks for help as always 2inch Lift, 33inch Cooper STTs, Wheel Spacers, Hidden Champion 9000lbs Winch with recovery points, Full Underbody Protection including Rear Bumper Guard, Rock Sliders, Snorkel, 4x4 screen enabled and Sat Nav on the move (thanks to Bodsy), Discreet LED roof lights, LED work light, BAS Re-map and EGR's blanked, V8 Brake upgrade with Grooved, Drilled and Slotted Brakes, Halo Fog Lamps, Roof Rack, 240V Inverter, CB radio and finally a Swing away wheel carrier with Hi-Lift mount...
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| 24th Apr 2013 7:26 am |
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J@mes
Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4547
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Put it in reverse while the engine is off but the ignition is on, take off parking brake and then bend down and listen to the sensors, they click if they are working.
Not sure about the fronts as I don't have them  2014 D4 XS
2005 D3 SE - Gone
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| 24th Apr 2013 7:41 am |
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Martin
Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18446
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If your hearing's not all that you can also feel them clicking away if you put your finger on the sensor. 
A broken wire on the driver's side rear seems to be relatively common for PDC faults. 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
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| 24th Apr 2013 8:35 am |
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Disco Newbie
Member Since: 19 Apr 2011
Location: Koeln
Posts: 32
 
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If you have front Sensors then make sure you check then as well, I was convinced it was oen of the rear ones on mine as it only went dead in reverse after initially starting to work.
Turned out to be one of the front ones. 
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| 24th Apr 2013 9:28 am |
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TdV6Pete
Member Since: 10 Aug 2012
Location: Rutland
Posts: 415
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Right boys and girls. Did mine last night.
Ignition on, in reverse, hand brake off. Lie under the car or somewhere the parking sensors wont get you and then slide you hand over one at a time to feel it vibrate. (You can just hear them clicking too.) Works for both front and rear.
Mine was a loose plug on drivers side rear. Simply slide hand up inside bumper, give a wiggle and clip back on.
Job done
Thanks for hdlp all
Pete 2inch Lift, 33inch Cooper STTs, Wheel Spacers, Hidden Champion 9000lbs Winch with recovery points, Full Underbody Protection including Rear Bumper Guard, Rock Sliders, Snorkel, 4x4 screen enabled and Sat Nav on the move (thanks to Bodsy), Discreet LED roof lights, LED work light, BAS Re-map and EGR's blanked, V8 Brake upgrade with Grooved, Drilled and Slotted Brakes, Halo Fog Lamps, Roof Rack, 240V Inverter, CB radio and finally a Swing away wheel carrier with Hi-Lift mount...
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| 25th Apr 2013 7:44 am |
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BLFarrar
Member Since: 02 Aug 2006
Location: Deepest, Dankest, Darkest, Dingiest......Le Halifax, West Yorkshire...with strong links to Ireland
Posts: 6222
 
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Had the rear loom replaced (by an Indie)....I think one rear sensor is marginal as if its very wet onthe road it goes haywire...
I have a control module that is A-OK spare to what I will ever need for a nominal sum (to site funds)...its located on the nearside / passenger side behind a panel....I got this myself as the local stealer said it was duff (& it wasnt). BREXIT - done properly.
Right now ...We need Government - not Politics
Save the Dipstick Flagbearer-keep it simple, less likely to fail campaign-agenda items:Starting Handles, Acetylene Lamps.
Founder: Dipsticks-R-Us Inc
D3 HSE-perfectly formed, passenger friendly...has real DIPSTICK
Jag XK-but sadly no DIPSTICK...HUGE design fault
FL2 has DIPSTICK..."real comfort in rear seats"
VW Golf wondermobile (?)..has real DIPSTICK
Morris Minor..original DIPSTICK technology..and a real KEY.
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| 25th Apr 2013 8:26 am |
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