Hello,
I don't think AUX input as was a standard option for previous models (~2006),
if you need an AUX input, then you should get BMW Aux input kit,
http://www.bmwmotorsports.org/pdf/BM...stallation.pdf
http://www.bmwmotorsports.org/pdf/E3...nstallInst.pdf -without Nav
but there are better products which you can go with your ipod,
such as DICE iPod integration kit or DICE High Definition Radio w/ iPod Integration from EAS,
http://www.europeanautosource.com/in...Path=67_69_135