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Testing front parking sensors
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4
Testing front parking sensors

Can you reach behind the bumper and unplug each one to find out which one is fecked?
😁
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205526022nd May 2019 10:08 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Switch them on and put your ear to them if it’s proper fecked it won’t click
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Post #205526322nd May 2019 10:42 pm
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

I tried that before but still couldn’t figure it out!
Is that ignition on but engine not running?
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205526422nd May 2019 10:50 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

You need chock the wheels
Switch the ignition on but you dont need the engine running
Select reverse
Let the hand brake off

Listen to to the sensors they will make a clicking sound.
The one not clicking or clicking quietly is faulty.

You will neèd to remove the rear bumper to replace but its only a 10 minute job and mainly all clips

I bought a set of four valeo ones from ebay for £25 as i had two faulty and thought the other two will fail soon anyway
  
Post #205527723rd May 2019 5:21 am
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

thanks for this - does putting it in reverse active the front sensors as well? as they are the ones I think aren't happy!
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205532323rd May 2019 10:25 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

yes it does
  
Post #205532723rd May 2019 11:15 am
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

Found it.
1 wrongun in the front middle right.
Will see if I can pop it out from behind to check the connections.
If not will order a replacement.

Thanks for the advice 👍😁
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205534823rd May 2019 3:14 pm
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

The cable assemblies are quite fragile and get damaged easily so go careful.

Taking the bumper off to replace them from behind looks scary but is a 10min job in reality.



From experiance I'd suggest you do it in warm weather as the plastic clips around the wheelarch are less likely to break.

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #205535023rd May 2019 3:22 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

It's maybe a 20 min job if the 4 bolts along the bottom are free.

If they are siezed, its not so fun
  
Post #205536823rd May 2019 5:21 pm
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

Had a look - as the sensor was fecked I went at it from the front.
Wiring looks fine.
Think the sensor may have had an impact.






Now to order a replacement....
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205539923rd May 2019 7:11 pm
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

replacement fitted and still have the error message Rolling Eyes
must be electrics in that case.
so think it's a bumper off job now to investigate.

anywhere / anything in particular I should be looking for?

Presume these aren't fused and it's a simple fuse that's gone?
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205686229th May 2019 10:45 am
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

Removing the front bumper looks a lot more involved than expected:


not particularly difficult, but certainly not a 10 minute job!

I've heard that the wiring can have issues as it's quite weak going to the front sensors - but what exactly and where a mI looking?

Thanks Thumbs Up
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205746331st May 2019 7:45 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

If the bumper has been off before, it shouldn't be too bad, if it's never been removed I think you're in for a struggle. Most of the fasteners will be seized in place and may need replacing. From memory, I think I drilled 2 out. Rolling Eyes
Again from memory, you'll need a second pair of hands armed with pliers to disconnect the head lamp washer pipes when it moves forward. ( passenger side I think )Wink

I can't agree with Nasher either, it'll take considerably longer than 10 minutes.
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Post #205747731st May 2019 9:35 pm
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pjm-84
 


Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2406

Ukraine 

The last middle front I did I only removed the fixings on one side / underneath and had sufficient access with the freed side pulled away.
  
Post #205748431st May 2019 10:32 pm
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

I’ve replaced the sensor but still joy.
That makes me think it’s electrics.
I’ve read that the wiring on these is delicate so I’m keen to learn what I should be looking for and where once I’m in there👍
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #205748531st May 2019 10:42 pm
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