See also:

The concept
The central locking system becomes active when the driver's door is closed. The system simultaneously engages and releases the locks on the following: ► Doors. ► Tailgate. ► ...

Adding engine oil
Filler neck When the indicator lights up in the instrument cluster, add 1 US quart/liter of engine oil within the next 125 miles/200 km. Do not add too much engine oil When too much engine o ...

For 520i and 528i: Check oil level
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 ...