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My 2020 M550i developed its second coolant leak in 10 months. First one last June was leaking expansion tank (warranty) and this time it is a coolant hose that goes from the expansion tank to the cylinder heads (costing me $1200 to fix outside of warranty). Both times I got a low coolant warning and both times the dealership found leaks. If you get that warning, you definitely have a leak.
Pic attached showing where the latest leak is.
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2020 M550i (G30) | Carbon Black/Black Nappa | DHP | DAP | Executive | Luxury Seating | Park Asst | Ceramic Controls | Front/Rear Heated Seats | 20" 668M wheels
2021 X3 (G02) | Dark Graphite Metallic/Cognac | Premium | DAP | Front/Rear Heated Seats
Sold/Retired: 2012 328i (F30)
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