Dropped my 400 off at the dealer 10 days ago for a variety of warranty issues; as expected they are calling most of the problems normal operating condition. They agreed the grinding wiper motor needs replacement but originally ordered the wrong motor so they will have the car two weeks because of that. What they disagreed on are the following. They consider it normal for: the brake pedal to be spongy and have 2 inches of free play, to have ambient exterior air to flow in through the AC vents when it's set to recycle (manual page 58); the manager said every car he's owned does that. That has not been my experience with my vehicles. Also normal is for the heater panel switches (plus upper dash and start button) to not be able to dim when headlights are on (I've found that engaged and red buttons do dim but the bright white ones do not). It states directly in the manual on page 53 that the heater panel switches are dimmable. The fuzzy rear camera situation is vague; the image from a new GT is superior to mine but their response is "they're all bad; it's normal". They are checking those water leaks by the side mirrors today but I expect to hear, "it won't leak in the rain just when washing so not a problem. The major vibration I'm getting at speeds over 90 won't be addressed as they can't legally test for it. I've tried being the squeaky wheel here but to no end. Am I asking too much? Does every 400 have the same conditions?