Transmission Without Dipstick
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 1999 BMW Z3, 1999 BMW M3, 1999 BMW M Roadster, 1999 BMW M Coupe, and 1999 BMW 750iL. However, it is still accessible from the selected car via links, so may be relevant.
To top off transmission after a repair, put selector lever to setting "P". Vehicle must be horizontal and secured to prevent it from rolling away. Unfasten filler screw. Top off automatic transmission using filler neck attached to filler aperture until oil emerges at filler/overflow bore. See Fig 1. Start engine. Top off automatic transmission again until oil emerges at filler/overflow bore. Screw in filler plug. See Fig 2. Operate brake and, with engine at idle speed, shift transmission through all gears several times. Connect BMW's GROUP TESTER ONE (GT-1) or DISplus hardware system to vehicle and perform oil level check in accordance with manufacturer's instructions. Replace sealing ring. Tighten drain plug to 11 ft. lbs. (16 N.m).