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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Coolant red lightViews : 600 Replies : 4Users Viewing This Thread : |
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Dec 2nd, 2017, 05:58 | #1 |
New Member
Last Online: Jul 27th, 2019 21:46
Join Date: Nov 2016
Location: WORCESTER
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Coolant red light
Hi, I for the life of me cannot solve this ongoing problem. I have 2011 V60 D3 RD Diesel. The red coolant light pops on quite often but when I go to top up when engine is cold it's always reading maximum level. If I stop straight away while warm to top up it just overflows with loads of pressure and spurts out a good litre or so. It then needs even more than it did in first place. It's a constant problem. I do very very little mileage with mainly town driving . Anyone got any advice or pointers.
Thank you Jo |
Dec 2nd, 2017, 07:22 | #2 |
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Last Online: Today 06:09
Join Date: Apr 2013
Location: Plymouth
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Hi Jo
Sounds a bit like an airlock. when running the airlock is under pressure and the level drops to fill the space as the air is compressed. Sometimes low enough to set off the low alarm. When cold and the cap is off the airlock can expand again and fill the reservoir. When hot and cap removed the air expands and with the hot coolant then overflows. Possibly? Iain |
Dec 2nd, 2017, 08:00 | #3 |
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Last Online: Apr 18th, 2024 11:47
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Location: Belfast and London
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I hope it is an airlock, one of my old BMW's suffered from airlocks and I would park the front wheels on a slight incline to raise the radiator slightly to help unblock it.
But, it might also be a cylinder head gasket, I hope not but better get it checked out now ASAP before it does more damage.
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Dec 2nd, 2017, 08:42 | #4 |
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Or maybe a sensor fault?
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Dec 2nd, 2017, 11:11 | #5 |
Speed freak
Last Online: Apr 3rd, 2020 22:04
Join Date: Nov 2003
Location: Yorkshire
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When you release the cap when engine is cold is there any pressure there??
Some cars only had one little pipe to coolent reservoir and other was capped off with a blank, there was a mod at one bit to remove that blank and fit another pipe as there is also a blank in top corner of radiator this allowed the radiator to bleed back to reservoir and stopped any airlocks in it, About a 10 minute job to fit and pipes about 20quid which is alot cheaper than a headgasket
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coolant, pressure, radiator, sensors, top-up |
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