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Restricted Performance - But no restriction
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4
Restricted Performance - But no restriction

I have had my D4 for a few months, and about 5k miles. Intermittently I getting a 'Restricted Performance' message as soon as I start the car, I bet its done it 10 times randomly - but I dont have any kind of smoke, restrictions, or anything other that I can notice? Turn it off and back on then its all good.

I have had the codes read and nothing has been found, other than an old water in fuel - but this has never popped up on the dash.

I plan to have a look and drain the fuel filter this weekend to see if its got any water in it, but any other things to check?
  
Post #18767487th Nov 2017 2:30 pm
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136

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

It’s a common fault. A new fuel filter housing should sort that!
 

Current: D4 HSE
Previous: BMW Z4M Coupe
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Post #18767497th Nov 2017 2:31 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

MAF sensor perhaps. If it looks like this it'll need a clean...but don't stick anything down there to do it!!! Whistle

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Post #18767517th Nov 2017 2:31 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

alfamale I will check the MAF sensor, I am sure I checked that as soon as I got it - just to take a look as I was curious to see since my old D3 days...

robpenrose I didn't know the fuel filter had a housing, thought it was a spin on/off type - or do you mean the head/holder?
  
Post #18767557th Nov 2017 2:36 pm
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dgardel
 


Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

Italy 2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini BlackDiscovery 4

head/holder
 Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

 
 
Post #18767697th Nov 2017 3:01 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

How easy is this to replace, will the fuel system need a bleed?
  
Post #18767737th Nov 2017 3:10 pm
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dgardel
 


Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

Italy 2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini BlackDiscovery 4

the work itself would be simple, the problem is the tight spaces where you have to work .....

I changed mine the past summer and it was a little toilsome especially to reinstall the new one (connecting the reas fuel pipe).

Better if you have access to a bridge lifter
 Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

 
 
Post #18767907th Nov 2017 3:41 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

Nope, it would all be on the drive at home with jack / stands...

My try the drain first and see if that helps.
  
Post #18767977th Nov 2017 4:05 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: 5102

Scotland 2015 Discovery 4 3.0 SDV6 SE Auto Causeway GreyDiscovery 4

I get the same display occasionally when towing, when on cruise control, and when changing from downhill to uphill. No drop in performance at all. Dealer has looked at it three times and nothing appears out of the ordinary. Warning goes away and stays away on switch off and restart.

I now just treat it like the "Tailgate open" type warnings.
 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.  
Post #18770648th Nov 2017 9:06 am
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

Mine is always at start up, never when moving.. strange cars...
  
Post #18770748th Nov 2017 9:36 am
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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 had that. It's one of the sensors relating to the fuel filter housing. I put up with it for a while (about a year) and then got it fixed properly. Indi charged me £150 for the job (parts and labour).
  
Post #18771588th Nov 2017 1:18 pm
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L319
 


Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2079

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Presumably if the computer senses water ( whether there is any or not) it will go into restricted performance .
  
Post #18771708th Nov 2017 1:46 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

Thats the thing, the performance is still the same, i just get the error..

I am now thinking about a possible battery issue, as my time FBH is not working, so perhaps they could be linked.....
  
Post #18771728th Nov 2017 1:50 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

The reason I left it a year before doing anything, was precisely because despite the "restricted performance" warning, there was no actual restriction. The car worked fine apart from the yellow triangle on the dash!
  
Post #18771778th Nov 2017 2:01 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

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

I am confident that its water in fuel causing the issue - I reset the codes last week, but got the warning this morning and then checked the codes again and showed fuel in water, cleared the code and the warning went.

I will try the drain this weekend...
  
Post #18774389th Nov 2017 9:22 am
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