I just purchased a Certified 2005 RX330 (56k miles). When driving 45 mpg or higher, there is a tapping noise that sounds like it is coming from the driver's side somewhere. It's not unbearably loud, but it's definitely noticeable. I've checked everything on the outside/inside and nothing seems to be loose. Does anyone have any suggestions on things this may be? It starts like clockwork at 45 mph and above, and stops as soon as I slow down.

 

You have a CPO, take it in and get it de-bugged.

 

what is CPO anyways. trying to learn everything i can about it.

 

I was curious about what CPO stood for and then found out. CPO stands for Certified Pre-Owned vehicle. The Lexus CPO details (this is for the US obviously - would be slightly different in my neck of the woods) are found here http://www.lexus.com/cpo/overview/index.html

 

Go here: https://www.clublexus.com/forums/rx-...neath-car.html

Also, if you search, there is a lot more on this.

 

CPO means it is under warranty for a period of time. Just do not know what mileage and time period. Since you recently bought it, CPO, do not be shy to take it in for repairs. Lexus aims to please you. If you are unhappy, take it in.

 

look at recent posts on plastic shields under the car making noise.

 

It was the Fuel Tank Shield. A couple pieces of two-sided foam tape and the problem was solved. Thanks for your replies.

 

Yup, common issue.