11 61 050 Removing and installing intake air manifold (M54): Notes
WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Instructions for disconnecting and connecting battery.
Disconnect negative battery lead.
Remove engine cover.
CAUTION:
Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness. Mark plug connections.
Unclip plug connections (1) from holders.
Detach battery positive lead from intake air manifold.
Detach retainer (2) from battery positive lead.