Tom, I feel your pain! I bought a brand new 09 LE V6 that I waited MONTHS to be built exactly the way I wanted it equipped and paid CASH. I also have a 96 Camry which is built BETTER than this 09. The quality of the 96's interior, fit and finish is way better bar none. Also mechanically that car has been bulletproof. Imagine my disappointment when driving home from the dealership after taking delivery of my brand new Camry when the dash starts rattling around the center A/C vent. Minor issue I know but that was the first problem I had. I had/have at times the B-pillar rattle/buzz, driver door buzz, rear speaker shelf/deck buzz, A-pillar covers loose at headliner. Granted all of those are pretty minor in the grand scheme of things and I have fixed a couple of those myself and by reading tips here in the forum how to address some of those issues. When you start talking about these things everyone says.."take it back to the dealer" Well, NO..I have had MORE DAMAGE done to my vehicles and things made WORSE by the dealer than I care to remember! Most of those things I mentioned involving the interior I have fixed myself. If you want your interior to start rattling really good then let the dealer start taking pieces apart in their attempt to "diagnose" whats wrong! Now if you want to talk mechanical that's another story. Last April I started my car in the morning and it sounded like a machine gun was going off under the hood and the check engine light came on. Called the dealer and they had it towed to them. Of Course they couldn't get it to duplicate the problem but the code was a "piston misfire"..the car only had 15k on it and has been serviced by the dealer every 4mo/4k. They kept it for 5 days even had a factory rep come look at it...NOTHING! And it hasn't done it since. Service Mgr. explained it away as a "Computer glitch" that caused the #2 piston to misfire.."momentarily" and "not to worry because I have plenty of warranty left" Ok, maybe so but does that ease my mind knowing that I have a vehicle that could possibly do this again on a road trip leaving me stranded? What happens when the warranty runs out? Needless to say they threw in an extended warranty. Now, I've got that "loose/disconnected knock sensation" in the steering wheel when starting to accelerate or just about to stop that many have posted about here in the forum. Back to the dealer!
Overall, I have been very lucky I guess as I have not had anywhere near the problems many owners of this Camry generation have reported. But doesn't negate the fact that this generation is a prime example of Toyota's cost cutting efforts. I'm sure all of you can relate after the recall debacle how much re-sale value you instantly lost also..Thank you Toyota! I remember back in the late 80's as a teenager their slogan was "Oh what a feeling..Toyota!" I'm definitely feeling ya! We invest our money in Toyota for their reputation of being reliable, quality built vehicles with the expectation of trouble free driving for many years to come. Instead here we are researching problems we are having with our cars on the internet leading us to good ol Toyotanation! This website has really been an incredible source of good useful information. Especially from other Camry owners on how to mod their cars etc.
Stepping down now off of my soapbox, after all is said and done..ALL new cars have issues..bugs to be worked out when new models are introduced etc. Some 07-11 owners have had NO problems at all with their cars. My co-worker has a new Honda that rattles like a baby rattle and has already had to have the tranny replaced w/only 5k. I did ALOT of research before deciding what new car manufacturer I was going to give my cash too. When this generation came out, I thought WOW , a sporty baby Lexus! I was on the fence about a used Lexus IS or new Nissan Maxima, with having more or less deciding on the Max. But when I drove the new Camry, especially an SE V6 I thought it was AWESOME, especially the V6 power! I finally pulled the trigger on a LE V6..the SE just rode a little more rough to me because of the sport suspension. Overall, I like the car alot, the way it rides, handles-> (now that it has Michelin Pilot Exalto tires) and now starting to look into some mods. Am I going to keep it as long as I have the '96? Probably not and I say that because after having it for 2 years, I honestly don't think it is built well enough to last that long and that's a shame! Time will tell.
In the end Tom you have to decide how bad the interior noise bothers you and does it warrant another dealer repair attempt? It could very well be something broken that may cause a safety issue. If the dealer didn't fix it the first time, then I would take it to another dealer to get their opinion and go from there. That's what I am going to do if I have another engine issue. At any rate you have alot of information here on this website that can probably give you a good idea of what the problem may be to give you some ammo going back to the dealer. Sounds like it's probably minor and I'm sure they will get it fixed for you. Good luck!