1. Vent service- $80 Only thing I can think of is cleaning out your HVAC vents...why?
2. PCV Valve- $40 Haven't done this on the 4R, but based on past experience with other vehicles this shouldn't be difficult. Not sure what part of the $40 is parts, but surely could be done cheaper. Why do they say it needs to be done?
3. Air Induction- $185 Cleaning the MAF sensor maybe???Again, question "why?"
4. Cabin Filter- $62 ( I did this myself for $15. So it makes me feel like they are ripping me on all the other stuff too)
Don't blame you one bit...it ticked me off when I was going in for my free oil changes (after purchasing the 4R new) to hear the service advisors come into the waiting area and tell the other customers they recommended changing the air and cabin filters for $100 total. Usually the "victims" were women and seniors. I feel bad that those who can probably least afford it are the ones taken in, and that they probably have nobody else willing or able to help them with their car. Of course, one older couple, looking pretty well-abled, I mentioned it to out in the lot said they had the money and didn't want the hassle...they didn't really care. To each their own. They tried it on me and I just reached under the chair and showed them the parts.
Even before you go through the trouble personally, find out why they think it needs to be done, and have them show you any problems they've discovered.