After your Lexus is no longer under warranty, don't go back to the dealer unless it's a major issue.
Recently, my wife was told by the dealer that her rear calipers on the '08 RX 350 were frozen.They needed to be replaced.It was also recommended that the brake fluid and front and rear differential fluids be changed. The dealer listed EACH caliper at $567.74, brake fluid change at $171.95 and F&R differential fluid change at $220.90. Total with tax-$1578.07 HELLO!!!!!!!!!!!!
I took it to the shop that works on my '97 F-250 diesel. They did the same job using re-manufactured calipers not the gold plated? new lexus ones for $588.53. I've finally convinced my wife that she's been getting "ripped-off" for the past 6 yrs. at the dealer.