One problem related to engine noise has been reported for the 2010 Lexus RX350. The most recently reported issues are listed below.
The engine makes a noise like a sloppy piston or a rod knocking. The car is a 2010 Lexus Rx350 with 69,000 miles. What is interesting here IA the fact that the issue was discussed with the service group on a recent confrence call but the staff was told to keep it quiet. Is Toyota playing the games again?.