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Coolant Warning - float failing ?
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

So, no recurrence for a week an I was going ignore it as a one off.

Then 10 minutes into the dash to drop the youngest in Lancaster, it came back on. Back near home and it was on when I parked up 90 mins ago. Banging Head
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23138306th Nov 2022 2:04 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

And, of course, returned to the car and the fault cleared as I drove off.

Have to have a good look at it this morning.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23139267th Nov 2022 5:44 am
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

Had a look at getting the young 'un to get the rail replacement bus to save me having to go back to Lancaster this afternoon but it's saying 13hr 19minutes Lancaster to Manchester !

So plan is park it on the flat and overfill coolant by a mark or two on the reservoir then see how it is after the trip.

The needle never budged from it's normal 1/2 a degree above horizontal position yesterday, so I'm confident it's a sensor issue.

This, my theory anyway, will show me if it is losing fluid.

One question: are the water pipes "hard" when engine is at temperature? I know cars I had in the distant past were, but never had need to test on either D4 and things have moved on since Morris 1300s and Hillman Hunters Laughing
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23139467th Nov 2022 9:15 am
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

OK... a cupful of 50/50 brought the level about 3mm above the lowest ridge, just above the plate with hole in.

Can't see how to access the sensor, I'll scour YouTube in a bit.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23139667th Nov 2022 11:16 am
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Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

And whilst the youngster managed to get a train through to Wigan and save me a lot of piddling about, the fooking warning light came on about 10 mins into the trip. WTF is going on ?
  
Post #23140947th Nov 2022 9:50 pm
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Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

Quote:
One question: are the water pipes "hard" when engine is at temperature?


Anyone got an answer for that ?
  
Post #23141348th Nov 2022 9:23 am
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gasdisco
 


Member Since: 02 May 2017
Location: Angus
Posts: 68

Scotland 2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Water hoses will get "harder" when engine up to temp as the pressure will be up if no leaks present.
Had intermittent low coolant alarms for a while - no access to the float, so replacement tank cured this.
 01 Discovery2 V8 LPG - Drowned
96 Discovery 300 V8 LPG - Drowned
91 Discovery 200 TDI - Sold
71 Range Rover (Perkins 4.203) deceased 
 
Post #23141538th Nov 2022 10:32 am
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Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

I think that is where I am heading ... just trying to get a known good 2nd hand at the mo, as I'm buying other stuff from a breaker.

alternative is reservoir/sensor/cap from eBay.


Have also noticed, whilst checking this, my power steering fluid is a shade under the minimum level. Obviously not related but I'll get some of that this week too. From memory, it's the most expensive type on the market. Previous D4 Censored it out through the o-ring(s) so I'll look at getting those at the same time.
  
Post #23141618th Nov 2022 10:58 am
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 

Check the antifreeze concentration and condition. I've seen floats sinking when the the bottle is just filled with water or has a low concentration.
 Joe  
Post #23143469th Nov 2022 10:46 am
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Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

It's 50/50 mix but not been changed for about 3 years IIRC.

Container says it has a 5-year life so maybe it's due a change?
  
Post #23143529th Nov 2022 11:19 am
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James W
 


Member Since: 27 Mar 2008
Location: Riyadh, KSA
Posts: 3079

Saudi Arabia 

I got an intermittent warning on my D4, I replaced the whole bottle including new sensor. It's wasn't too bad but I did need to buy some remote cable-operated hose clip pliers

Here's my thoughts: https://disco4.com/forum/post2222752.html#2222752
 D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - Gone to someone with less sense and more time to enjoy it Very Happy
2016 Toyota Hilux Invincible - Liberating experience 
 
Post #23143609th Nov 2022 1:04 pm
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Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

Cheers, James.

I'll look at getting a remote clip tool.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23143669th Nov 2022 1:36 pm
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James W
 


Member Since: 27 Mar 2008
Location: Riyadh, KSA
Posts: 3079

Saudi Arabia 

Feel free to borrow mine if you're passing anywhere but they aren't expensive Thumbs Up
 D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - Gone to someone with less sense and more time to enjoy it Very Happy
2016 Toyota Hilux Invincible - Liberating experience 
 
Post #23143829th Nov 2022 2:38 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

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

Ordered on Amazon 30 seconds after my last post on here !
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23143889th Nov 2022 3:42 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8243

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

You won’t regret buying them so long as you put them where you can find them in a hurry Laughing I have a pair of adjustable pliers that I have extended the handles by about 10”(cheapo version).
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #23144049th Nov 2022 5:39 pm
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