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IID says 'No Faults'
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4
IID says 'No Faults'

I am still trying to chase down this infuriating warning lights problem. I had it again to day (HDC,EDB, etc etc but when I scanned with IID it said there were no faults.
I have tried this a few times an each tie it says there are no faults. Any ideas why?
thanks  
Post #22823837th Mar 2022 5:59 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

How olds your battery? A failing battery can cause issues like this Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE  
Post #22823997th Mar 2022 6:56 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6403

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

looks like you covered all avenues

have you been checking the cars wiring harness for brakes in cables which would also cause gremilins from hell

good luck
Greg  
Post #22824097th Mar 2022 7:15 pm
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4

Battery is two months old. No breaks on cables and it has run perfectly for a couple of weeks until today when all hell broke loose; The difference now is the IID tool detects no faults even though ALL the warning lights are on and this is the thing I can't fathom.My BMS ran teh battery son to 79% as expected and then up to 83% two days ago and after an overnight in the garage it was 92% and then 80% today.  
Post #22824127th Mar 2022 7:41 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6403

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

remember batteries work on state of charge as well as state of capacity

state of charge might be showing 100% on various tools even on faulty battery which capacity is degraded due to damage

also remember there is miles of wires in Discovery I would defo check all exposed places very well even for barely visible brakes as wires can brake inside the shielding

good luck
Greg  
Post #22824137th Mar 2022 7:45 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

It could be that the lld is not connecting to all the ecu's in the car, try contacting Patrick at Gap and see if he has any ideas Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE  
Post #22824207th Mar 2022 9:04 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13020

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

I'd start with a hard reset ... open bonnet, wait a good 10 mins, then disconnect +ve battery lead and short it to the -ve one. (You may need to disconnect -ve lead to achieve this)

If problems persist, I'd be wondering about
1. earth leads to engine/body
2. instrument cluster dry joints.  
Post #22824387th Mar 2022 11:17 pm
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4

Thanks for all the suggestions! I did a hard reset some weeks ago and it seemed to be better temporarily but since I have a garage appointment on Monday I am going to leave it as it is so they can see there are problems. My battery said 80% charge this morning and the alternator was pumping out 105 amps but I still get the christmas lights.  
Post #22824968th Mar 2022 10:04 am
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4

When the toll tries to clear faults it often says 'update failed' for some ECUs and then goes to the next. Mean anything to you?  
Post #22825018th Mar 2022 10:44 am
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4

Pat tells me that one or more ECUs refuses the command so do a hard reset and try again  
Post #22825278th Mar 2022 2:38 pm
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