Low coolant warning.

Seabazz2008 · May 6, 2021

I have a discovery 3, 2006, 2.7 hse, and I keep getting a low coolant warning, and yet the coolant in the expansion bottle is at the correct level, and the engine shows no sign of overheating. Anyone got any ideas as to what the fault might be.???

backinblack · May 6, 2021

The L322 monitors the amount of antifreeze in the coolant also, maybe the Disco 3 does the same?

Seabazz2008 · May 6, 2021

backinblack said:
The L322 monitors the amount of antifreeze in the coolant also, maybe the Disco 3 does the same?

Seabazz2008 · May 6, 2021

Thanks ,never knew that, I will make some inquiries.

kermit_rr · May 6, 2021

backinblack said:
The L322 monitors the amount of antifreeze in the coolant

this is new to me! do you have any clue how it works? guessing some kind of refractometer

tilly2 · May 6, 2021

Replace the sensor, a genuine one will only cost you £12.49 plus vat and postage.

https://www.island-4x4.co.uk/sensor-level-coolant-expansion-tank-tdv6-genuine-pcj500030-p-34173.html

Nodge68 · May 6, 2021

Seabazz2008 said:
Thanks ,never knew that, I will make some inquiries.

It just needs a new level sensor, it's a common D3 problem. The sensor element corrodes, preventing it from measuring the level, hence flagging a low warning.

lynall · May 6, 2021

Needs new header tank, the internal float goes duff, new tank should come with the sensor.

backinblack · May 6, 2021

kermit_rr said:
this is new to me! do you have any clue how it works? guessing some kind of refractometer

There's a float on the level sensor which I think is a hydrometer. I had coolant warning a few times until I increased the anti-freeze concentration. (for L322)

Seabazz2008 · May 6, 2021

Gentlemen thank you for your advice and suggestions. New level sensor ordered...

Low coolant warning.

Seabazz2008

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backinblack

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