BMW 2010 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 121
3
Jump starting terminal, refer to page
102
Online Edition for Part no. 01 41 2 602 348 - © 02/09 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
121 engine, the expansion tank is on the other
side
105