Bellman

6 mos. or 5,000 miles is the interval set by Lexus for service/oil change. If you live in areas of "extreme conditions" (non-specified) then it is recommended to do it sooner. Since the engine temperature is regulated by the cooling fan and the coolant, it really matters very little weather you live in Dallas or Butte, MT as far as how hot the oil gets, so forget letting some dealer service writer talk you into intervals less than 5,000 miles or 6 months. Now if you live at the end of some dirt road or have excessive dust or pollen in the areas in which you commonly drive a shorter interval might be justified. And by the way, the oil change intervals are soon to be increased to 10,000 miles on GS and IS as they already are on the current `10 RX350 & GX460. It's because Lexus has now begun to use synthetic oil.

Bellman

Actually, the current version of software for the `06-`10 IS series is 09.1

Bellman

link please?

Actually, the current iteration of software available for the `06-`10 IS series is 09.1

F-Sport options are available now from Lexus as dealer installed or over the counter options and will not compromise your warranty. The sport tuned exhaust sounds great and allows for some reduction in resistance and a minor increase in horsepower. The sway-bars, Bilstein shocks and lowering springs have a huge effect on stiffness & cornering . There are other brake/suspension combinations that are quite noticeable, but unless you have the 3.5 ltr engine they're probably wasted.

Hi. I am looking to buy newer RX350 07-08 and i am researching all options. Does anybody have same year RX350 with cooling seats? Do they exist? Or Lexus only introduced them in 2010 in US. 2007 RX350 made for Dubai has this option as standard. Thanks in advance for any help

P.S. Another thing that would help me a lot if somebody can tell me where cooling for seats turns on, so i can look for these buttons in pictures. I see heating knobs for seats, but cant see any cooling knobs. Are heating knobs good for cooling if you turn them all the way to the left?

Nope! US/Canadian units don't have A/C (cooled, or power ventilated to be more precise) front seats until the 2010 model year. The controls for the heat/vent function are the dual-function dials immediately fwd of the center consul armrest next to the port for the iPod/MP3 and phone cords.