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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
Coolant Warning - float failing ?

Dropped SWMBO and friends at the theatre earlier and on the way back got a "low coolant" warning as I accelerated to join a dual-carriageway.

Had to stop at my dad's to fix his washing machine (long story) and his drive is approx. 30 degree slope but allowing for that, looked to have plenty coolant.

Checked again after fixing the Censored washing machine and it looked just the same.

Accelerated away and ... "low coolant" warning disappeared.

I've seen many threads on here about the float failing ... is this in-keeping with a failed float ?
  
Post #231283028th Oct 2022 6:18 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6767

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

If the sensor behaves differently accelerating or downhill could it possible that you have too little coolant? Whistle

The float sensor manifested to me so that I was on an even surface and it pinged. But there was certainly fluid in the tank.
  
Post #231283328th Oct 2022 6:30 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

when it came on it was almost perfectly level road, when it went off it was slightly uphill. Acceleration wasn't full-on "enthusiastic" level.


Pic taken on dad's sloping drive.


  
Post #231283528th Oct 2022 6:50 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6767

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

If the cold level looks ok, I’d just change the tank since almost all weirdness seems to end then. Not very scientific, of course.
  
Post #231283928th Oct 2022 7:18 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

Too dark to be piddling around now so I'll have a look in the morning.

Got to pick SWMBO and friends up shortly too. Might err on the side of caution and take her car. (which doesn't have any temp indicator so it can't overheat)
  
Post #231284028th Oct 2022 7:21 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

Anyone know the part number for the coolant tank ?
  
Post #231284128th Oct 2022 7:22 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6767

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

LR020367
  
Post #231284428th Oct 2022 7:33 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6767

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Hardware wrote:
(which doesn't have any temp indicator so it can't overheat)


Rolling with laughter

Kind of like certain LR models not having an oil stick hence they can’t run out of oil Mr. Green
  
Post #231284528th Oct 2022 7:34 pm
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Member Since: 28 Jun 2016
Location: Hiding under the M60
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United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

kajtzu wrote:
LR020367


cheers.
  
Post #231284728th Oct 2022 7:47 pm
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Member Since: 28 Jun 2016
Location: Hiding under the M60
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United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Decided I'd look at the level and ... it's sat at the "cold fill level" mark, so I'll use it tonight but have a play with the sensor in the morning.
  
Post #231285028th Oct 2022 8:08 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

I'm surprised DSL hasn't been along to suggest stripping it yet. Probably busy photographing food in places most of us can't afford to go. Laughing
  
Post #231286628th Oct 2022 10:19 pm
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ianm27
 


Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 2154

England 2012 Discovery 4 3.0 SDV6 GS Auto Orkney GreyDiscovery 4

You got that spot on Dean Rolling with laughter Rolling with laughter
 Uncle Ray's spare wheel protector
Limo Tint
Blackvue front & rear dashcam
Cruise control switch pack
Bodsy's remote for FBH 
 
Post #231291129th Oct 2022 12:29 pm
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jamez79
 


Member Since: 03 Sep 2018
Location: Staffordshire
Posts: 595

United Kingdom 2012 Discovery 4 3.0 SDV6 XS Auto Indus SilverDiscovery 4

I changed my coolant tank twice and the light just keeps on coming back on. STayed off for a few days, just so I thought "oh, I've fixed it" then boom, back on! Rolling Eyes

I may try changing the sensor at the bottom of the tank instead. New coolant, bled properly (i think) and still comes on. It's a royal pain in the ....!
   
Post #231296929th Oct 2022 8:20 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

Hardware wrote:
I'm surprised DSL hasn't been along to suggest stripping it yet. Probably busy photographing food in places most of us can't afford to go. Laughing


I’ve got a new sensor you can try, they can be changed without disconnecting any coolant pipes £5 posted, pm me if interested. Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #231298130th Oct 2022 6:45 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

May well take you up on that offer! Very Happy
 .


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 #231299630th Oct 2022 11:18 am
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