cant find coolant level marks on M235i Expansion Tank

AbnormallyAspirated · 09-07-2022, 07:44 AM

Hi:

I've had my 2016 M235i for almost a year, and the coolant vent line broke. I replaced it, but I cannot find the min/max marks on the expansion tank. Below is the tank I have (not my actual car).

Can anyone help me out? owners manual was no help.

Thanks,

Dave

pikcachu · 09-07-2022, 09:14 AM

the max level is at that ridge that goes all around the tank kind of half way.... seems like you are about 1 inch below the max

John in VA · 09-07-2022, 11:44 AM

Shine a flashlight into the reservoir - you may be able to see the marks better, but pikachu is correct.

123Britt · 09-12-2022, 07:17 PM

Here it is: The LOW Coolant Mark -- I just recently put too much in although I have and know the mark and that the Split Ridge or the top of the Hidden Triangle is considered full.

There is an arrow or triangle above the mark - if you look closely.

09-07-2022, 07:44 AM	#1
AbnormallyAspirated Private First Class 16 Rep 122 Posts Drives: 2016 M235i 6-Speed Convertible Join Date: Oct 2021 Location: Rochester, NY iTrader: (0) Garage List 2016 BMW M235i F23 6MT [0.00] 2019 Audi Q7 55 [0.00]	cant find coolant level marks on M235i Expansion Tank Hi: I've had my 2016 M235i for almost a year, and the coolant vent line broke. I replaced it, but I cannot find the min/max marks on the expansion tank. Below is the tank I have (not my actual car). Can anyone help me out? owners manual was no help. Thanks, Dave
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09-07-2022, 09:14 AM	#2
pikcachu Major General 1399 Rep 5,262 Posts Drives: M235i (F22 Red angel) Join Date: Jul 2011 Location: undisclosed iTrader: (1)	the max level is at that ridge that goes all around the tank kind of half way.... seems like you are about 1 inch below the max
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09-07-2022, 11:44 AM	#3
John in VA Colonel 983 Rep 2,192 Posts Drives: 2015 228i M Sport Join Date: Jul 2007 Location: Leesburg, VA iTrader: (6)	Shine a flashlight into the reservoir - you may be able to see the marks better, but pikachu is correct. __________________ ____________________________________________ 2015 BMW 228i in EstorilBlau II Metallic / Terra Dakota Leather - 6-speed manual, M Sport Package, Cold Weather Package, Lighting Package, Premium Package, Harman Kardon premium sound, Anti-theft alarm system, Blue Metallic Matt Accent Moldings, Aluminum Hexagon Interior Strips, Anthracite Headlining
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09-12-2022, 07:17 PM	#4
123Britt Captain 287 Rep 864 Posts Drives: 15 M235i AT Join Date: May 2008 Location: Madison, Alabama iTrader: (0)	Black Sharpie Mark Here it is: The LOW Coolant Mark -- I just recently put too much in although I have and know the mark and that the Split Ridge or the top of the Hidden Triangle is considered full. There is an arrow or triangle above the mark - if you look closely. Attached Images Last edited by 123Britt; 09-12-2022 at 07:41 PM..
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