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DISCO3.CO.UK > Technical (D3)

Parking sensors - complete failure?

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Rebiam

Member Since: 31 Oct 2016
Location: Chessington
Posts: 10

2005 Discovery 3 TDV6 HSE Auto Zambezi Silver

Parking sensors - complete failure?

Hi all - my parking sensors both front and rear have stopped working. I still get the bong when I put into reverse, and the light comes on on the switch when I am at low speed, so everything looks normal. No fault being read with IID. There is no clicking from any sensor when I listen (which I have had to do because no fault is showing). Any ideas?

Thanks for your help.

12th Apr 2018 10:03 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10360

2005 Discovery 3 TDV6 HSE Auto Rimini Red

are you sure no fault is showing with the IID !!!!

13th Apr 2018 11:40 am

nerdbiker

Member Since: 24 Apr 2017
Location: London
Posts: 20

All my sensors stopped working when one wire in the front bumper loom was worn through (bad routing squashed it between the metal bumper and the cover). Have you checked the wiring?

I was getting a "front parking sensors not working" error on the dash and a fault code for the front right sensor. So I'm surprised there are no codes showing.

Repairing the wire has brought all sensors back on-line for me

2004 Discovery 3 HSE Auto

16th Apr 2018 12:24 am

carbore

Member Since: 06 Apr 2016
Location: Cornwall
Posts: 545

2009 Discovery 3 TDV6 HSE Auto Zermatt Silver

Same for me, they have always been iffy in the wet (the rears), but now they are total failure in the dry too.

I dont have any diags, but its it worth doing a visual inspection on the rear loom? Is it usually a visible thing or should I get some diags done and get a few sensors to fit JIC? Disco 3: Lotus Elise S1: Ferguson T20: Audi A2

21st Apr 2018 5:53 pm

nerdbiker

Member Since: 24 Apr 2017
Location: London
Posts: 20

I would visually inspect the loom. Although in my case I could find out from reading the codes which sensor was at fault the actual problem was worn wires.

2004 Discovery 3 HSE Auto

24th Apr 2018 2:06 pm

Rebiam

Member Since: 31 Oct 2016
Location: Chessington
Posts: 10

Checked with IID again - absolutely no faults showing with the parking sensors. I will have a look at the wiring this weekend. Is access easy or is it front bumper off?

26th Apr 2018 9:47 am

MikeO

Member Since: 15 Jan 2014
Location: The Cotswolds
Posts: 1372

Bumper of unfortunately but it's a straightforward job. Make sure you know where all the fixings are if you haven't done it before. There are walk through videos on YouTube that are handy. 2016 Skoda Octavia VRS Estate
<gone>2009 FF Vogue TDV8 Buckingham Blue</gone>
<gone>2015 BMW 520D SE (not my favourite car)</gone>
<gone>2009 D3 HSE Galway Green</gone

26th Apr 2018 10:02 am

Browny90

Member Since: 19 Jul 2016
Location: Ashbourne
Posts: 687

2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini Black

Is it a long bong when you put it in reverse? suggesting a fault.

I had this in Jan, a rat had chewed through the rear loom, right where it goes into the plug in the N/S R bumper, if you lay down under there you'll see the lug and a little wiring.

I had to fit a new loom, easy enough but there are some hidden screws under the lower boot door cover...

The loom is set into a large foam block in the bumper so you cant see the whole thing unless the bumper is removed. Disco4 MY16 SDV6 Landmark Black
Disco4 MY12 SDV6 XS Orkney Grey (Gone)
Defender 90 200tdi Completely rebuilt.

26th Apr 2018 11:14 am

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