The only time I go to the dealer is if I really need an important part for anything that belongs in the engine bay (minus small fuse and relay).

For everything else, I find my own way of getting something of the same quality, if not bettter for cheaper.

 

Hey Jonny! Yeah, it's the one behind the plastic panel behind the glove box door. The owner's manual shows it, but not a great picture...
Very easy to do, no need to pay the dealer-even someone as lazy as me should be willing to do this