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Just got the low coolant warning for the first time on my 2023 M5 (about 12k miles).
Checked the expansion tank but don’t see any signs of a leak / residue around cap or tank. Is it normal for the car to just use the coolant?
I am currently out of state on a road trip. It’s Sunday and nearby dealer isn’t open, so will stop by at auto zone or AAP to get some aftermarket coolant added.
Here is the expansion tank picture:
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