[Nickies]

I know this is nothing to worry about but it is getting colder here and the message popped out a few times. It stays for a few seconds and goes away.

Which tank do you check and which coolant do you add? The car is still under warranty but I am 100 miles away from the nearest dealership and I will go for service only next January.

[jzeiler4]

The big tank is engine coolant, the little tank is for the intercooler in the intake manifold. They are not connected.

If it is just a little below to mark I would just add distilled water.

[freakystyly]

Probably good to keep to the coolant mix if you see freezing temps. I'm somewhat confident in saying it will be more than half a quart missing, so straight water may throw off the overall mix a bit.

Can't go wrong with OE https://www.bimmerworld.com/Fluids/B...ntifreeze.html

[dmaxdmax]

It's something to worry about alot...sorry.

It may be a little something, but that could turn into a big something. Meaning, find your leak and go from there.

[Kernel Kurtz]

It is normal for these cars to require a small amount of coolant top up now and then. I'm on my 4th BMW now and they all do it. With my last two N55 cars, over 10 years I went through about half a jug of the BMW blue coolant. I've so far added perhaps a cup of the BMW green coolant to my B58 in a year and a half.

Yeah, if you are going through a lot of coolant then you have a problem, but the idea it is a sealed system and you should never lose any at all is just not accurate.

[Nickies]

Originally Posted by Kernel Kurtz

It is normal for these cars to require a small amount of coolant top up now and then. I'm on my 4th BMW now and they all do it. With my last two N55 cars, over 10 years I went through about half a jug of the BMW blue coolant. I've so far added perhaps a cup of the BMW green coolant to my B58 in a year and a half.

Yeah, if you are going through a lot of coolant then you have a problem, but the idea it is a sealed system and you should never lose any at all is just not accurate.

You are completely right...... maybe a cup. The message didn't even reappear in a week. Last time was about in the same time frame you mentioned and the dealer said it was normal.

I just ordered a quart of BMW coolant.

[dmaxdmax]

I'm glad it was only a cup low...and sorry if I sounded too abrupt, but I guess I was worried because you said it wasn't a big deal...and it could've been.

You should still monitor levels anyway. The b58 had one hose that seemed to seep more than the 20 others you have! I forget which one, but I believe it's off of the expansion tank...the N55 has a similar hose seemingly famous for seeping.

Good luck!

[BlueberryPie]

Can anyone confirm which color coolant should be used in my 2019 M240i? This is my first BMW and the dealer didn't seem too confident when I asked them - blue or green? I spoke with two different employees and neither knew for sure.

I bought an OEM container (1L) when I first got the car earlier this year and it looks blue, haven't used it yet. When I open the main expansion tank, it is definitely below MIN, but hard to definitively tell which color, no warning light yet.

I found this article from BimmerWorld which seems to clear things up, but haven't found this confirmation anywhere else:
https://www.bimmerworld.com/Fluids/B...allon-Jug.html

It says any vehicles made after January 2018 should use green, and my car was made in October 2018....so green it is??

[freakystyly]

I wonder what changed in the cooling systems in 2018?

It sounds like an upgraded formula, maybe they wanted a cut off year for warranty reasons?

[qlaval]

Originally Posted by BlueberryPie

Can anyone confirm which color coolant should be used in my 2019 M240i? This is my first BMW and the dealer didn't seem too confident when I asked them - blue or green?

.....
It says any vehicles made after January 2018 should use green, and my car was made in October 2018....so green it is??

Yes the green one.

[Nickies]

I finally received a quart of BMW coolant today. The warning has not reappear in more than a week. I topped to the mark with less than 2.5 cups of 50/50 mix.

The coolant I received is blue. I don't think it matters for a so small quantity and it is impossible to see in the tank which color is the original.

[BlueberryPie]

Originally Posted by qlaval

Yes the green one.

Update on this exciting topic - I ordered a jug of the OEM green coolant, mixed it 50/50 with distilled water, then compared it to what's in my system currently.

Looks like I have the blue, even though I have a 2019 vehicle built in October 2018. My maintenance history shows no work on the cooling system, though I know that does not guarantee anything.

Left is my car, right is the new mix. Now I need to get that jug of blue coolant back that I recently gave away.

I put in about 500mL of distilled water weeks ago, but the car seems to be a bit below MIN after sitting overnight, might have a leak on my hands.

[jzeiler4]

I believe they are equivalent chemical make up except for color. I was nearing 14 K on mine and when I checked the expansion tank it was a hair below min and I have the green in the car and some blue mix left over from a bike flush so I just poured it in as a preemptive measure.

Now the Orange, Euro organic coolant used in Audi and my Pacifica is a different chemical mix altogether. I would not mix those.

[p912guy]

Coolant line leaking is a common issue. Look closely at the ends of the line. Easy and inexpensive fix.

[Rioku]

B48 has a problem with coolant, soon or later, a little tube / sleeve broke.

I have a 230i from 2018, and just has this problem 3 months ago.

The mechanich of BMW told me, it´s a common fault from B48

By the way, my liquid is blue colour.