I don't see any do not touch signs under the hood of my 07.

But, it's interesting that the oil filter housing has a sealed what looks to be a "paint line" on it. Sort of like sealing a letter with wax so you know if it was opened or something along those lines.
I suppose to tell if it has been opened, but who knows.

Have I mentioned the Navigation system really sucks...
How I wish I would have listened to the sales guy who told me not to get it....