Chances are, it's something minor, related to the emission system, either a faulty sensor or bad firmware for the Adblue system. CELs can be triggered by simple things like the gas cap not being properly closed. If you read the posts here, you will find a lot of stories about new Touareg with adblue issues. Nothing critical but still disappointing for a new SUV...
I got a bad sensor at delivery. Took them a week to get the replacement sensor but it drove fine in the meantime. Unless you get a flashing CEL, you try to get to your dealer soon but you can drive it in the meantime.
If you are new to VW and worried about CELs, I recommend you buy a VCDS cable from Ross-Tech. On top of allowing you to check CELs and other error codes, delete them if they are not important but also re-program a few things like open/close windows with FOB and hacks like Video in Motion... worth every penny!