01-21-2022, 07:54 PM | #23 |
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There is an issue (with a related bulletin, I understand) with a plug on the top of the engine not sealing. They just had to replace mine because I got a low coolant light and they were able to find coolant leaking in the plug area.
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02-13-2022, 09:18 PM | #24 |
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Well looks like the warning came up again. Suspecting it is the cap to the main expansion tank now. Where can I get a replacement cap from. Does anyone have a link to one for sale by any chance?
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02-16-2022, 02:47 PM | #25 |
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Call your dealership up. Parts Department. My dealer had the cap in stock. I was not happy it wasnt covered under warranty, even though its only $23.
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02-22-2022, 12:18 PM | #26 |
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So since last summer i have had to top of coolant twice… about a bottle of water amount and no visible leaks but i did have residue on top of my tank and on my hood.. so i just brought it to dealership yesterday and they just informed me they ordered another tank
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02-27-2022, 07:06 AM | #28 |
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I just had my expansion tank replaced last week as it developed hairline cracks in 3 places on the upper half as well as seepage around the middle seam. Same problem on my former F80. Why there are 2 pieces fused together is beyond me.
Last edited by FatRear08; 02-27-2022 at 09:36 AM.. |
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02-27-2022, 08:58 PM | #29 |
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I suspect my M550 upper tank is leaking, 2020. The dealership keeps telling me they pressure checked system and is OK. But i've had 2 low coolant warnings in less than 4 months, 1.000 miles. That is not OK with me.
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02-28-2022, 10:45 AM | #30 |
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I had 2 F80s and both never had any coolant problems like this. This is the 4th time I had a warning within 1k miles. I don't even drive it a lot considering 1k miles in 5 months. I don't think I plan on keeping the car long too as I tend to switch cars every 9 months or so but still something thats a bit of a hassle. BMW provided me with a free container of coolant so I have been using that when needed.
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02-28-2022, 01:04 PM | #31 |
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To be losing that much coolant in a short amount of time and/or miles, there’s got to be a leak somewhere. If there’s residue anywhere, then it’s a no brainer and the dealer should be replacing the tank and cap at a minimum. Maybe try a different dealer and see if you get another result. Is it possible that the car burns off some coolant, especially if it’s driven how it’s intended? Probably, but not to your extent. In relation to this now that my tank has been replaced and all is good now, I’m going to have a 90 degree thermostat installed to keep things a bit cooler.
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02-28-2022, 01:50 PM | #32 | |
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02-28-2022, 02:02 PM | #33 | |
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03-01-2022, 11:08 AM | #34 | ||
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03-01-2022, 11:44 AM | #35 |
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Try this one. The Amazon cap appears to be an aftermarket product.
https://www.bmwpartsdirect.com/oem-p...ap-17117639021 |
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03-05-2022, 02:00 PM | #36 | ||
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04-20-2022, 10:34 PM | #37 | |
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04-21-2022, 03:41 PM | #38 |
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04-23-2022, 07:09 PM | #39 | |
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04-23-2022, 07:47 PM | #40 |
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I think BMW did lower the thermostat temp in 2020, but I did not find a BMW part. I think mine came from Uro but not sure of the actual manufacturer.
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05-26-2022, 09:34 AM | #41 |
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When installing downpipes, I added heat tape to the underside of the upper metal heat shield over the turbos (there are 2 shields) and to the bottom of a new engine coolant tank. I have not done the intercooler coolant tank yet but that will be easy to do on the car. The engine coolant tank would be a pain to do cleanly while installed due to the contours of the tank bottom, but you could simply put a layer of fabric non adhesive heat barrier between the tank and the upper turbo heat shield as an easier and probably just as good method of heat reduction.
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05-26-2022, 11:43 AM | #42 | |
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05-26-2022, 11:54 AM | #43 |
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Any of the heat barriers should work, either a non adhesive sheet of the same stuff used in tape or a slightly thicker version like the stuff some use to insulate a transmission tunnel. I think the flexible stuff would be easier than a hard aluminized sheet that might crinkle up, but I would also stay away from non covered stuff like header wrap material or wool like insulation that will shed a lot of fiber under the hood. Just poke a couple of holes for the two tank legs and a slit for the bottom hose.
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05-29-2022, 04:13 PM | #44 |
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Over almost four years of ownership. I've topped up a good half-dozen times AND have had the system pressure-tested at the dealership twice. I just added ~750ml of water today. I'm calling the dealer again tomorrow. I have a LOT of residue around the cap (and below).
I will ask about the recall mentioned in this thread but notwithstanding, i feel the main reservoir cap is simply way too loose. I feel it could be much tighter before that "click" in which the arrows align. I'll report back once the dealer checks things out...my warranty is gone in a month, hard to believe I've had the car for 4 (awesome) years. |
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