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      06-23-2020, 10:53 PM   #1
Ozzie8
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Check coolant!

As I was about to head off to the shops today, I received this rather serious message. No warning messages up until this point. I hope I don't have a coolant leak issue.

For the novices like me, there are two coolant reservoirs. Only open them once the engine is cold (suggest first thing in the morning). You can see from my photos both were below low. Inside the tanks you can see the plastic low/high level guide. Bring back the dip stick - so much easier than these things. Essentially you are trying to cover the low level of the yellow plastic tab with liquid but not the high level.

My car gulped down over a litre of coolant. The mixture is 50/50 genuine BMW Coolant / De-mineralised water.

In the good old days driving in country, you'd pull up at the servo and fuel up and ALWAYS check the radiator. Because it was hot and a lack of water in your radiator would often mean you were in for a long walk home.

These days in a our fancy cars, I've never thought to check the coolant. I can read the oil and fuels levels from the digital feeds into iDrive and BMW Connected. But not the coolant.

Anyway team, I just thought I would post this and perhaps prompt you to check your coolant.
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      06-23-2020, 11:16 PM   #2
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I don't think you should be using coolant...how many miles on yours?

If you have time have your dealer do a pressure check and inspect for leaks.
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      06-23-2020, 11:23 PM   #3
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Owners guide says to add coolant 50/50 mix.

4,499km on the clock.
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      06-23-2020, 11:38 PM   #4
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I've never had that problem without a coolant leak. You might want to take that to the dealership to check on ?
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      06-23-2020, 11:38 PM   #5
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Quote:
Originally Posted by Ozzie8 View Post
Owners guide says to add coolant 50/50 mix.

4,499km on the clock.
Too little mileage to be adding coolant, take it in and have the aforementioned testing done.
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      06-24-2020, 06:50 AM   #6
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That exact thing happened to me last Fall, after the new car’s first hot and humid Deep South summer. I checked for visible leaks and found none. I topped off that annoying reservoir. Thus far, nine months later, the problem has not reoccurred.

My theory: The reservoir was incompletely filled in the first place, and normal, hot-weather use lowered it just enough to generate the error message.

That said, I am watching it very carefully this summer.
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      06-24-2020, 09:42 AM   #7
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Odd amount for the little miles on it. BMW engines will drink coolant and oil, mainly oil. Every car I've had has encountered this until switching to run the engine colder. Definitely take it in so they can look it over but also make sure the engine is up to temp before beating on it.
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      06-24-2020, 03:26 PM   #8
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Pressure test is always best to ensure all is good with these kinds of things
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      06-24-2020, 04:11 PM   #9
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Y'all should check this thread out. Seems as though the water in the coolant is boiling off...or at least that's what some folks who are more handy than I am are saying.

https://www.bimmerpost.com/forums/sh...php?p=26334929
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      06-24-2020, 06:58 PM   #10
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Quote:
Originally Posted by FloridaM5 View Post
Y'all should check this thread out. Seems as though the water in the coolant is boiling off...or at least that's what some folks who are more handy than I am are saying.

https://www.bimmerpost.com/forums/sh...php?p=26334929
Yes! As I posted above, my low-coolant warning came last Fall after an extremely hot summer. I topped it off.

I checked it again a few weeks ago as summer returned here and it was fine. But...that was shortly after the car's first routine service visit. It is extremely possible that the level was fine because the service tech had just topped it off again.
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      06-24-2020, 09:40 PM   #11
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Quote:
Originally Posted by Ozzie8 View Post
As I was about to head off to the shops today, I received this rather serious message. No warning messages up until this point. I hope I don't have a coolant leak issue.

For the novices like me, there are two coolant reservoirs. Only open them once the engine is cold (suggest first thing in the morning). You can see from my photos both were below low. Inside the tanks you can see the plastic low/high level guide. Bring back the dip stick - so much easier than these things. Essentially you are trying to cover the low level of the yellow plastic tab with liquid but not the high level.

My car gulped down over a litre of coolant. The mixture is 50/50 genuine BMW Coolant / De-mineralised water.

In the good old days driving in country, you'd pull up at the servo and fuel up and ALWAYS check the radiator. Because it was hot and a lack of water in your radiator would often mean you were in for a long walk home.

These days in a our fancy cars, I've never thought to check the coolant. I can read the oil and fuels levels from the digital feeds into iDrive and BMW Connected. But not the coolant.

Anyway team, I just thought I would post this and perhaps prompt you to check your coolant.
Thanks for the update and definitely something for me to keep an eye on now that we're riding 110+ degree summer days. I never even thought to check the coolant prior to the drive to San Diego and back considering it is a 7 month old car. Live and learn and so grateful to the forum for the learning aspect!
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