Same here. Have this 2010 RX350 for the last 8 months and I had no clue than buying a Lexus would create so much STRESS!!! Furthermore their customer service is SOooooooooooooo BAD ! This car makes rattle noises for the last 5 months at least and they cannot figure out what it is. Manager heard it and said it was easy fix. But bottom line, it still has not being fixed. i was used to Toyota customer service which was excellent but honestly Lexus is the worse than I have ever experienced since the day I was able to drive. Truly sad !!!
Noise comes from the left side of dashboard. Does it always when its cold, and especially when i push on the acceleration pedal and on rougher roads. But it does not do it all the time. It can do it for 8 hours in a row or not do it at all which is why it is hard to duplicate once i arrive to dealership. It drives me totally nuts and gives me so much stress !!! I dont know what to do. All I can say is DONT BUY A LEXUS because if you get a LEMON like I did, their customer service SUCKS!!! They are just good to sell cars and hopefully for you, the car was all made in Japan. Unfortunately mine was 65% made in Canada and 35% in the USA.