BMW 2009 X3 Owner's Manual page 104

Important components in the engine compartment
1 Filler neck for washer fluid of the headlamp
and windshield washer system, refer to
page 43
2 Body ground, negative terminal, refer to
page 122
3
Jump starting terminal, refer to page
102
Online Edition for Part no. 01 41 2 601 104 - © 08/08 BMW AG
4 Filler neck for engine oil, refer to
Adding engine oil
5 Reservoir for brake fluid, refer to page
6 Expansion tank for coolant, refer to
page 105. In vehicles with a gasoline
122 engine, the expansion tank is on the other
side
105