Originally Posted by JCL

Not through the AUX jack, it is just an earphone jack. You need the 6FL USB integration option in the vehicle, which lets you control the iPod. It was a factory option. If you don't have it, it can't be retrofitted. I would need to check on the retrofit options.

Edit:

There is a BMW "iPod my BMW" option for retrofit. Not sure if the functionality is exactly the same as the factory install or not. Doesn't work with the CD changer, you have to disconnect the CD changer if you have one. EAS has it here:

eas - 714.369.8524 | BMW - iPod Integration Kit for e70 X5

Then there are various aftermarket solutions, DICE, etc. I am not sure who is winning the features race these days. Once I got the 6FL factory USB option, I didn't look back.

Good luck

Jeff