See also:

Warning triangle
The warning triangle is located in the container on the inside of the trunk lid. Unscrew the wing nut to open. ...

For X3 xDrive28i: Oil levelcheck
The concept The oil level is monitored electronically during driving and shown on the Control Display. If the oil level reaches the minimum level, a check control message is displayed. Displayi ...

Screw thread
Push out the cover by pressing on the top edge. ...