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Low Coolant
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dave291
 


Member Since: 23 Feb 2011
Location: uk
Posts: 242

2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
Low Coolant

Low Coolant warning came on last week, topped up with water (it was Sunday night and didn't have any anti-freeze in the garage).

Warning is back again today.

It's hard to see the levels but looks like the top part of the tank (the red coloured bit) is full but there's an air gap down into the rest of the tank.

Sorry, know that's a poor description but hoping someone will recognise what I'm talking about (someone usually does on here when I post similar ridiculously non-technical descriptions of my D3 problems).

I've read somewhere about bleeding the tank...do I need to do this?
 '06 TDV6 HSE, Java, Black Leather, Logic 7, Privacy, Steps  
Post #133900612th Sep 2014 9:27 am
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DaveJLBI
 


Member Since: 07 Mar 2014
Location: Clare
Posts: 688

Ireland 2014 Discovery 4 3.0 TDV6 HSE Auto Loire BlueDiscovery 4

Most likely you have the common fault of a porous float in your tank (as I currently do). The float no longer floats and thus sets of the warning.

Answer is to replace the header tank with the newer version, about 50 quid I think.

Worrying though, isn't it!
  
Post #133902912th Sep 2014 9:53 am
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zinke
 


Member Since: 22 Feb 2014
Location: Scunthorpe
Posts: 584

2006 Discovery 3 TDV6 S Manual Zermatt SilverDiscovery 3

As above, most likely the float in the tank. Easy job to swap, just remove the passenger side headlight to get good access and clamp the bottom hose when you undo it and then its just a case of topping up the tank when youve swapped it over and you wont need to bleed the whole system, just the one on the top of the bottle.

Pete.
 IID, webasto software and workshop facility's available.  
Post #133920512th Sep 2014 2:57 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Yep, easy job so good luck.
Click image to enlarge


Thumbs Up
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
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Post #133925512th Sep 2014 4:48 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

hi mate, just had mine done, sorted! my light came on everytime i put my foot down hard, but as said new bottle happy days Very Happy
  
Post #133941112th Sep 2014 8:02 pm
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dave291
 


Member Since: 23 Feb 2011
Location: uk
Posts: 242

2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

On second look, it looks like mine might be using coolant thought. Would that be the case with the header tank issue or does it sound like another problem?
 '06 TDV6 HSE, Java, Black Leather, Logic 7, Privacy, Steps  
Post #134024714th Sep 2014 4:00 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

When deciding on coolant loss it is worth applying masking tape and marking the tank level when cold and only checking the level when it is genuinely cold (ie first thing in the morning). I have seen people chase phantom leaks when comparing hot with cold and a level surface with a non-level surface.

Header tanks rarely leak but unions, pipes and EGR coolers are more common.
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #134026214th Sep 2014 4:26 pm
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dave291
 


Member Since: 23 Feb 2011
Location: uk
Posts: 242

2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

well, it's definitely a leak...got underneath and found a wet patch (which looked like coolant) on the left side of the bottom of the engine
 '06 TDV6 HSE, Java, Black Leather, Logic 7, Privacy, Steps  
Post #134062215th Sep 2014 7:45 am
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

lucky you could of been a lot worse !!! get a new bottle anyway Thumbs Up
  
Post #134100015th Sep 2014 4:55 pm
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lee apex
 


Member Since: 17 Jan 2014
Location: Suffolk
Posts: 52

England 2005 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

At least youve found the leak now rather than it causing more damage.
  
Post #134215616th Sep 2014 8:07 pm
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