Problems with 2007 Nissan Quest VISIBILITY

While driving down the local road, a loud vibration from the right power sliding door can be heard.. its very loud! it also made the gas pedal shake a little bit.. 2007 nissan quest s 86500 miles..drivers side window gets stuck while going up, also doors wont open all the time. *tr

I have a 2007 nissan quest i bought new. it has rear sonar as one of the options and due to the size, shape and blind spots it is needed. i noticed with 35000 miles that the rear sonar was inop- since i bought it for my wife, i was unaware it was inop for a while. it was not covered under warranty because i have owned it for 37 mos. after some research it appears it is not only common in all years of the quest but the titan as well. the problem is a defective aural buzzer. when you have a fault somewhere in the system the off light should come on letting you know the system is off- however, it illuminates sporadically and what you think is a working system is really not- i have talked with people who were unaware the system was off until they backed into something causing minimal but expensive damage. i am an aircraft mechanic and cannot see how there is not a recall on the buzzer- when backing up looking behind you and using your mirrors there is a huge blind area in the back of the van that is caused by the gradual increase in the slope of the body panels. my concern is that it is a matter of time before someone gets injured. the problem is that nissan uses a defective buzzer that they know will fail- it is a cheap fix for the dealers however for the consumer it would cost upwards of 400 dollars for a buzzer that can be purchased at radio shack for 5 dollars. i replaced mine with the original nissan part that cost 60 dollars and find it offensive they have not voluntarily fixed a problem they know exists- it is safety related and as someone who fixes jets for a major airline, safety is first and foremost along with a reliable, dependable product. this should be a recall. thank you *tr

I've been ignoring this problem since i bought the vehicle. now it is completely dead. the problem was, everytime i tried to close the driver's side window, it automatically reopened about 6inches down by itself. in order to close it completely, i have hold up the switch for about 30sec. to 1min. i wonder if anybody else has this issue. if it is, is it still covers under manufacturing warranty. *tr

The windshield got broken twice in not more than a week after the replacement of the first cracked cristal. the cause was the same. an small rock hit the right end of the cristal causing a crack. the sad thing is that the hit was almost unperceivable in both cases. i will contact the dealer to investigate if the windshield is not good enough to support small rock hits. *tr

Foreign material has entered through the cowl panel air intake during operation of the front heater and/or air conditioning system, resulting in a build-up of material in the plenum. this has lead to noise and strain on the air conditioning fan. i am concerned it could lead to ignition of these materials. *ak