I answered this question on your other post.
There is no fuse explicitly listed as an "MCU" fuse.
The fuse you want is F236 which is located in the fuse box by your right ankle underneath the carpeting.
This fuse on the diagrams is listed as "SCCM, iBooster IGN, ACC Sense, Rear-View Mirror, Radio, TPMS
Any damage done to your car from removing this fuse is YOUR responsibility...