Lot of stuff here.

Don't know if this one was mentioned (searched)...

If your X is sitting out into traffic a little (say in an alley) and you want to make sure it is seen and not run into in the dark, you can turn on the parking light bulb for just the right side or the left. All other lights will remain off.

To do so, after removing the key, move the turn signal lever in the direction of the side you want to be on.

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2006 X5 Sport 4.4i