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Reversing Sensors - any ideas?
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Sheepy
 


Member Since: 20 Feb 2013
Location: Bedfordshire
Posts: 630

United Kingdom 2010 Discovery 4 3.0 TDV6 GS Auto Zermatt SilverDiscovery 4
Reversing Sensors - any ideas?

Hi All,

For a while I've had reversing sensors that were intermittently faulty - usually after heavy rain. Symptom was no loud beep when selecting reverse and then no warning when reversing.

Now I 've moved on to reversing sensors that are intermittently working (ie they're more often not working at all).

Any ideas where to start? Am guessing it's a broken wire somewhere, but not sure where to start looking or how much needs to be disassembled to investigate.

Oh, and the car is a 10-plate GS spec D4.

Thanks,

Chris
  
Post #18880028th Dec 2017 2:24 pm
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alfamale
 


Member Since: 25 Jul 2011
Location: Stroud, Gloucestershire
Posts: 2185

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Zermatt SilverDiscovery 4

Mine's been doing this recently. Today it was fine, later it probably won't be and tomorrow who Censored knows.

Get yourself an IID and it'll tell you which ones need replacing like this:

Quote:
PAM-Parking Aid

B1B48-01 (28) Rear left outer sensor - General failure information - general electrical failure
( on 30-04-2011 21:13:47 at 0 mi )


Mine is NSR Left because I went swimming on Salisbury recently. Apparently it's the easiest sensor to change without removing the bumper. But I'll darned if I can get my hand up three to undo the clips and remove it, so it bumper-off for me.!!!

Thumbs Up
 Front Runner Rack, OEM Ladder & RAI, Tuff-Trek Foxwing, B'rakhah Ingonyama Expedition Trailer, RLD's Spare Wheel Protector, Bodsy's Bars, Empty Pockets! Member of Gloucestershire & Worcestershire 4x4 Response.

 
 
Post #18880548th Dec 2017 4:37 pm
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Aerialmark
 


Member Since: 21 Jun 2015
Location: Burnley (Where the M65 is cobbled)
Posts: 5189

England 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Are they expensive ?
 The happiest of people don't necessarily have the best of everything;
They just make the best of everything they have. 
 
Post #18880558th Dec 2017 4:38 pm
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alfamale
 


Member Since: 25 Jul 2011
Location: Stroud, Gloucestershire
Posts: 2185

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Zermatt SilverDiscovery 4

Nope. £30-£44 each:

https://www.advancedfactors.co.uk/parking-sensors-12756-c.asp
 Front Runner Rack, OEM Ladder & RAI, Tuff-Trek Foxwing, B'rakhah Ingonyama Expedition Trailer, RLD's Spare Wheel Protector, Bodsy's Bars, Empty Pockets! Member of Gloucestershire & Worcestershire 4x4 Response.

 
 
Post #18880568th Dec 2017 4:39 pm
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Jubbly
 


Member Since: 20 Nov 2016
Location: Stourbridge
Posts: 401

United Kingdom 

only need one faulty to bring the system down
 Jaguar I-Pace HSE imminent.
Gone HSE with Flappy Paddles. IID BT tool. RLD Spare Protector, Altox GPS.

 
 
Post #18880768th Dec 2017 5:43 pm
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1806

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

I’ve got 2 new genuine spares if you need some Thumbs Up

Scrap that my spares are fronts Embarassed
 Stolen - D4 Loire Blue
D4 Bali Blue 
 
Post #18880878th Dec 2017 6:36 pm
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Sheepy
 


Member Since: 20 Feb 2013
Location: Bedfordshire
Posts: 630

United Kingdom 2010 Discovery 4 3.0 TDV6 GS Auto Zermatt SilverDiscovery 4

I don't have an IID, saw a post suggesting that I listen to each one in turn, and the one that doesn't tick is the faulty one. Only problem with that is that none of mine tick!

Guess I'm going to have to get underneath and see if I can eyeball the wiring.
  
Post #188895311th Dec 2017 12:12 pm
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LT
 


Member Since: 31 Dec 2005
Location: South West
Posts: 23261

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

You could have the same issue that I had on my D3. A tiny nick in one of the sensor wires, when water got in it gave the faults you describe, when it dried out (it was summer) it worked, until it got wet/damp again.

It was fixed under warranty, but the dealer couldn't find the tiny nick in the wire at first.
 2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography 
 
Post #188901511th Dec 2017 2:32 pm
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Theboynorm
 


Member Since: 24 Jun 2017
Location: Maidstone
Posts: 11

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

sorry posted in wrong area, can’t delete
  
Post #19119657th Feb 2018 6:56 pm
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Sheepy
 


Member Since: 20 Feb 2013
Location: Bedfordshire
Posts: 630

United Kingdom 2010 Discovery 4 3.0 TDV6 GS Auto Zermatt SilverDiscovery 4

My Indy fixed them for me today (as it was in for diagnosis of an engine issue). He found two broken wires (well, technically one wire broken in two places), near the connector where the wiring loom goes into the car.

All fixed now, and no parts needed! Phew!!

(And he fitted my replacement brake switch for free, took pity on me I guess).
  
Post #19123668th Feb 2018 4:22 pm
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alfamale
 


Member Since: 25 Jul 2011
Location: Stroud, Gloucestershire
Posts: 2185

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Zermatt SilverDiscovery 4

He didn't take pity, you drive a Land Rover so he knows you'll be back! Rolling with laughter
 Front Runner Rack, OEM Ladder & RAI, Tuff-Trek Foxwing, B'rakhah Ingonyama Expedition Trailer, RLD's Spare Wheel Protector, Bodsy's Bars, Empty Pockets! Member of Gloucestershire & Worcestershire 4x4 Response.

 
 
Post #19123718th Feb 2018 4:30 pm
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