Carrying out:

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Always conform with the procedures to avoid injury to persons or damage to parts.

On automatic transmission, select "P" setting, apply handbrake.
Move the shift lever of vehicles with manual transmission into neutral and apply the parking brake.
Ensure that the jump leads cannot get caught in rotating parts, e.g. fan.
First connect positive terminals of both batteries with one jump lead (red).
Use positive connection point in engine compartment for vehicles with one battery in trunk.
Then attach second jump lead (black) to negative terminal of donor battery and to engine ground or body ground on vehicle to be started.

CAUTION: Never connect second jump lead (black) to negative terminal of battery in vehicle to be started. This would produce explosive gas which could be ignited by sparks.

Danger of explosion!

After engine of vehicle to be started has started up, first disconnect the jump lead on the negative terminal/ground connection. Then remove jump lead from positive terminals.