You might want to ask your question on the E9x 3-series forum, as your engine is not used in the F2x 2-series cars (or the F3x 3-series either). That said, your car is 11 years old, so it's likely just part failure due to age.
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2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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