E70 X5M: Coolant Low Warning but reservoir is full?
The "Coolant Low" warning light keeps coming on, but I checked the reservoir level and it's still full.
I know it's possible that the level sensor could be bad, but before I just replace it I thought I'd better ask advice here just in case there's something else I should check.
With all the intercoolers and complex cooling systems, I'd hate to miss something important and end up damaging this thing.
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