2009 TL owners, Please read very important...
 

I just wanted to share my story on my 2009 TL AWD. It's only been 4 months and I started hearing noise coming from the engine last weekend. The noise kept getting louder after driving for a while. The noise would stop if MPH was under 25. It turned out that the noise came from center driveshaft bearing. They just replaced center driveshaft bearing for me today. I'll have to see if that solved the problem or if any other problems come up. So for 2009 owers out there, if you hear some adnormal noise from your engine, come to dealer and have them check it out for you.

very helpful thanks for posting this.