Checking engine oil pressure with pressure gauge
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2014 BMW Alpina B7L, 2014 BMW Alpina B7, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
Connect special tool 13 3 063 with special tool 13 3 061 (pressure gauge).
Start engine and check engine oil pressure.