Coolant Warning

mthurman · Oct 18, 2018

Hi,

I was just driving and the coolant warning came on. Engine temp was normal. I popped the hood and saw that the coolant level was 1-2 inches below the MIN line. I loosened the cap and released the pressure and saw that the coolant returned exactly to the MIN line. I then drive the car for a few minutes and the warning did not return. Not sure what is going on here? Any ideas? I will be keeping a close watch.

Matt
2016 Autobahn PP Manual

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elamothe15 · Oct 18, 2018

mthurman said:
Hi,

I was just driving and the coolant warning came on. Engine temp was normal. I popped the hood and saw that the coolant level was 1-2 inches below the MIN line. I loosened the cap and released the pressure and saw that the coolant returned exactly to the MIN line. I then drive the car for a few minutes and the warning did not return. Not sure what is going on here? Any ideas? I will be keeping a close watch.

Matt
2016 Autobahn PP Manual

Sent from my iPhone using Tapatalk

Once the car is fully cooled down I would check it again on level ground. If below min line I would top it off with some 50/50 coolant/DI water mix. Same thing happened to my car 2 years ago in the winter time and I topped it off and it's been fine since. If you go to the dealer they may top it off for free as well.

The Fed · Oct 18, 2018

Coolant contracts in cold weather, but not that much. Fill it to the max line when cold.

Golfs everyday · Oct 18, 2018

I've read about this on another thread somewhere. Sometimes the unit gets pressurized and causes a vacuum forcing the coolant below the minimum line.

As others have pointed out, I too recommend you check it again once the engine has cooled down completely and add the pink stuff. You can buy it on Amazon. If it's only a little under the min line you can just add distilled water for now to the middle of lines and add a bit of straight coolant when it arrives later to top it off.

Finglonga · Oct 19, 2018

Golfs everyday said:
I've read about this on another thread somewhere. Sometimes the unit gets pressurized and causes a vacuum forcing the coolant below the minimum line.

.

mthurman · Oct 22, 2018

Thanks for the replies!

It was fine until this morning. Same thing happened and it went right back to MIN when I released the pressure by opening the reservoir. I will add some coolant and keep an eye on it.

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Sparky589 · Oct 22, 2018

While I doubt it's the issue at hand here, it might be worth it if the issue persists to get under the car and examine the block. Coolant leaks leave a very distinct residue as they evaporate off the hot block, which makes tracking down the leaks fairly straightforward.

Signed: Someone who has had too many coolant issues with their car.

Derushi · Oct 23, 2018

Any leaks?

Mine started leaking and thermostat housing/water pump was replaced under warranty. Car is 2.5 yrs old and has over 30k miles.

replicate · Oct 30, 2018

Water pump leaks are common. Get it checked on your next service. Should be covered under warrantee.

Coolant Warning

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