Coolant Leak

AHall · 10-04-2022, 03:06 PM

Quote:

Originally Posted by rccarps2

Quote:

Originally Posted by Maverik259

Well just got my first "low coolant" warning this morning. So exciting. 2020 16k miles. Was hoping they fixed this with the 2020. Off to get topped off at the dealer on my way to work.

Edit: was a "cup" low according to the girl. Crazy that would trip the warning. Also just realized she didn't check both reservoirs. Only the main one.

Just got my first warning to. 21 with about 27k on it. Of course its the wife and baby with the car for the week as I am traveling.

Anyone confirm that these take the green HT12 coolant? Want to get some delivered to the house before I get home.

Car goes in for service in 2 weeks.... add this to the list.

I have 2021 and it takes the green. If you give BMW your VIN they will tell you the correct antifreeze/coolant. Hopefully you do not have a leak that is severe enough to damage your injectors and coils.

pbonsalb · 10-04-2022, 07:05 PM

Green is backwards compatible so you can use it in a car that originally had green or blue. Just buy green.

Maverik259 · 10-05-2022, 12:11 PM

Quote:

Originally Posted by pbonsalb

Green is backwards compatible so you can use it in a car that originally had green or blue. Just buy green.

ya they put in blue i noticed. next time i find myself at the dealer i'll buy a bottle of green.

Maverik259 · 10-05-2022, 12:13 PM

Quote:

Originally Posted by AHall

I have 2021 and it takes the green. If you give BMW your VIN they will tell you the correct antifreeze/coolant. Hopefully you do not have a leak that is severe enough to damage your injectors and coils.

i stood there while the cart girl filled it up to make sure i didnt see any obvious signs of leakage. everything looked clean so if its leaking its from the bottom where i can't see or it "evaporated" lol

AHall · 10-05-2022, 02:20 PM

Quote:

Originally Posted by Maverik259

Quote:

Originally Posted by AHall

I have 2021 and it takes the green. If you give BMW your VIN they will tell you the correct antifreeze/coolant. Hopefully you do not have a leak that is severe enough to damage your injectors and coils.

i stood there while the cart girl filled it up to make sure i didnt see any obvious signs of leakage. everything looked clean so if its leaking its from the bottom where i can't see or it "evaporated" lol

I am surprised a 2021 would take the blue. I was told not to use the blue.

rccarps2 · 10-06-2022, 07:17 AM

Wife took swung by the dealer yesterday with the car. Had them top it off. They didn't mention to her anything about a noticeable leak.

I will be back home this weekend and will take a good look under the hood.

I have a service appointment in a little less than 2 weeks. Will ask them to inspect the system at that time.

pbonsalb · 10-06-2022, 08:23 AM

I just got notice my intercooler coolant tank is shipping after some delay. I previously preventatively replaced the engine coolant tank and the caps of both tanks. My car is a 2018 with 41k miles.

Enjoiii · 10-06-2022, 08:54 AM

My expansion tank cracked/leaked (caused #5 & #6 injectors to fail) probably should just go ahead and change #7 and #8 soon, unless I just get rid of the car 😉

Maverik259 · 10-06-2022, 11:09 PM

Quote:

Originally Posted by AHall

Quote:

Originally Posted by Maverik259

Quote:

Originally Posted by AHall

I have 2021 and it takes the green. If you give BMW your VIN they will tell you the correct antifreeze/coolant. Hopefully you do not have a leak that is severe enough to damage your injectors and coils.

i stood there while the cart girl filled it up to make sure i didnt see any obvious signs of leakage. everything looked clean so if its leaking its from the bottom where i can't see or it "evaporated" lol

I am surprised a 2021 would take the blue. I was told not to use the blue.

I have a 2020 but they certainly didn't look shit up. Haha they just went and grabbed some coolant and put it in. I pulled into the drive through, told an advisor I needed a top up. They directed the parking attendant and she walked away and came back 30 seconds later with a new bottle. Only saw it was blue when she was cleaning up what she spilled

M5Neededi · 10-11-2022, 11:28 AM

My car's repair history shows "defect code: 1711024800 Radiator compensation tank leaking" @22k miles. But it does not mention any repairs for the injectors. So I guess they caught it before it did further damage.

pbonsalb · 10-11-2022, 12:31 PM

Just replace it again at a slightly shorter mileage interval before leaking is likely to start.

AHall · 10-14-2022, 09:49 PM

Quote:

Originally Posted by pbonsalb

Just replace it again at a slightly shorter mileage interval before leaking is likely to start.

Any signs of a leak? Do you still suspect leakage with all the shielding/insulation you installed.

pbonsalb · 10-15-2022, 07:07 AM

I have no signs of a leak and won’t be worrying with the heat reduction and shielding I have done and the preventatively replaced tanks and caps.

STi from DSM · 10-17-2022, 02:23 PM

So wondering if my car had already been in for service on this?

M5Neededi · 10-19-2022, 02:55 PM

Quote:

Originally Posted by STi from DSM

So wondering if my car had already been in for service on this?

That only mentions coolant level. Sounds like they only checked coolant level and topped it up if needed.

vanmpower · 10-27-2022, 12:01 PM

Just checked under the hood and the replacement tank looks bone dry for now. It seems to me that unless BMW resolves this, it's doomed to repeat itself and I will be long gone well before it does.

AHall · 10-27-2022, 12:38 PM

Quote:

Originally Posted by vanmpower

Just checked under the hood and the replacement tank looks bone dry for now. It seems to me that unless BMW resolves this, it's doomed to repeat itself and I will be long gone well before it does.

Where the heck did the fluid go? Any signs of a leak? Did you smell antifreeze?

Maverik259 · 10-27-2022, 01:01 PM

Quote:

Originally Posted by AHall

Where the heck did the fluid go? Any signs of a leak? Did you smell antifreeze?

my guess is its either evaporating from loose caps? or somewhere the system is open and burning off in the engine...but like you said, i have no idea.

Danny D · 11-01-2022, 02:23 PM

Quote:

Originally Posted by ResIpsaLoquitur

Pre-LCI needed coolant every couple of thousand miles from something like 16K onward, but no cooling system failure was diagnosed unlike a lot of others on this thread (and the forum generally). I was just repeatedly told it burned coolant when driven hard. My SA was kind enough to give me all the unlimited free (blue) coolant I needed, sending me home every time I was at the dealer with a few large bottles to keep at home, and a few of the smaller (1 quart?) size to keep in the car at all times.

After PDI on my LCI (at a different dealership because it was purchased out of state), I asked the coolant level to be checked and topped off in my presence. They obliged (with green coolant), which I verified was in the tank to begin with. When break in service was done (with my above SA at my home dealer), it was topped off with green coolant.

Guess I'm Lucky - I have never topped up my coolant and have 38,xxx KM on the car. Did an oil change yesterday, checked coolant still good. 2018 M5.

ResIpsaLoquitur · 11-01-2022, 02:44 PM

Quote:

Originally Posted by Danny D

Quote:

Originally Posted by ResIpsaLoquitur

Pre-LCI needed coolant every couple of thousand miles from something like 16K onward, but no cooling system failure was diagnosed unlike a lot of others on this thread (and the forum generally). I was just repeatedly told it burned coolant when driven hard. My SA was kind enough to give me all the unlimited free (blue) coolant I needed, sending me home every time I was at the dealer with a few large bottles to keep at home, and a few of the smaller (1 quart?) size to keep in the car at all times.

After PDI on my LCI (at a different dealership because it was purchased out of state), I asked the coolant level to be checked and topped off in my presence. They obliged (with green coolant), which I verified was in the tank to begin with. When break in service was done (with my above SA at my home dealer), it was topped off with green coolant.

Guess I'm Lucky - I have never topped up my coolant and have 38,xxx KM on the car. Did an oil change yesterday, checked coolant still good. 2018 M5.

That's incredible! Certainly an anomaly. Count your blessings!

Danny D · 11-01-2022, 02:53 PM

Quote:

Originally Posted by ResIpsaLoquitur

That's incredible! Certainly an anomaly. Count your blessings!

Thank you my friend. I will probably change the coolant reservoir @ 50,000 KM just to be safe anyway. It's a few hundred bucks for peace of mind.

ResIpsaLoquitur · 11-01-2022, 03:23 PM

Quote:

Originally Posted by Danny D

Quote:

Originally Posted by ResIpsaLoquitur

That's incredible! Certainly an anomaly. Count your blessings!

Thank you my friend. I will probably change the coolant reservoir @ 50,000 KM just to be safe anyway. It's a few hundred bucks for peace of mind.

Good call! Based on many, many forum members’ experiences, that proactive step will almost certainly prevent a headache further down the road.

10-04-2022, 07:05 PM	#134
pbonsalb Lieutenant General 5287 Rep 10,682 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Green is backwards compatible so you can use it in a car that originally had green or blue. Just buy green.
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10-06-2022, 07:17 AM	#138
rccarps2 First Lieutenant 345 Rep 322 Posts Drives: 2023 XM and 2023 X7 40i Join Date: Apr 2020 Location: Philadelphia, PA iTrader: (0)	Wife took swung by the dealer yesterday with the car. Had them top it off. They didn't mention to her anything about a noticeable leak. I will be back home this weekend and will take a good look under the hood. I have a service appointment in a little less than 2 weeks. Will ask them to inspect the system at that time. __________________ Current - Second 2023 XM (first one was taken back by BMW) and 2023 X7 40i Past - 2009 X5 35d, 2011 MB E350, 2011 740i, 2015 X5 35d, 2018 M550i, 2019 X5 40i, 2021 M5C
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10-06-2022, 08:23 AM	#139
pbonsalb Lieutenant General 5287 Rep 10,682 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I just got notice my intercooler coolant tank is shipping after some delay. I previously preventatively replaced the engine coolant tank and the caps of both tanks. My car is a 2018 with 41k miles.
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10-06-2022, 08:54 AM	#140
Enjoiii Private First Class 38 Rep 132 Posts Drives: G80 Join Date: May 2017 Location: Tampa iTrader: (0)	My expansion tank cracked/leaked (caused #5 & #6 injectors to fail) probably should just go ahead and change #7 and #8 soon, unless I just get rid of the car 😉
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10-11-2022, 11:28 AM	#142
M5Neededi Private 94 Rep 75 Posts Drives: 2019 M5, Ram 1500 Join Date: Jun 2022 Location: California iTrader: (0) Garage List 2019 BMW M5 [0.00]	My car's repair history shows "defect code: 1711024800 Radiator compensation tank leaking" @22k miles. But it does not mention any repairs for the injectors. So I guess they caught it before it did further damage.
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10-11-2022, 12:31 PM	#143
pbonsalb Lieutenant General 5287 Rep 10,682 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Just replace it again at a slightly shorter mileage interval before leaking is likely to start.
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10-15-2022, 07:07 AM	#145
pbonsalb Lieutenant General 5287 Rep 10,682 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I have no signs of a leak and won’t be worrying with the heat reduction and shielding I have done and the preventatively replaced tanks and caps.
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10-17-2022, 02:23 PM	#146
STi from DSM Lieutenant 257 Rep 489 Posts Drives: 2019 Audi RS5 Sportback Join Date: May 2020 Location: Champlin MN iTrader: (4) Garage List 2018 BMW M5 [0.00]	So wondering if my car had already been in for service on this? __________________ 2019 Audi RS5 Sportback Navarra Blue (Current)\|2021 Audi S4 (Quantum Gray) SOLD\|2018 BMW M5 (Singapore Gray) (SOLD)\|2019 Audi RS5 (Mythos Black) (SOLD)
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10-27-2022, 12:01 PM	#148
vanmpower Enlisted Member 25 Rep 42 Posts Drives: 2018 M5 Join Date: May 2018 Location: Vancouver BC iTrader: (0)	Just checked under the hood and the replacement tank looks bone dry for now. It seems to me that unless BMW resolves this, it's doomed to repeat itself and I will be long gone well before it does.
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