Our normal customer rep said Lexus would check it out & probably fix it because it was covered by an extended warranty that takes care of this type of problem... He told me I had let the oil run down again and then bring it into the dealer to examine it... He was on vacation when I came in so the substitute customer rep said our rep was wrong, that the IS 250 was the car covered by this special warranty, not the IS 350... They kept the car for 3 hours & said they could not find any visual problems, confirming what I had already told them...
They told they would have to start taking the engine apart to find the problem at my expense & could not give any estimated fix or cost...
My fix is to change the oil every 3000 miles, instead of the normal 5000 miles...
Sadly this another additional problem to add to the very long list of issues this IS 350 has had... Current ongoing issues, both front wheels have refused to hold air more than a couple of weeks... This has been going on since I bought the car new, they blame the tires, the tire company says its Lexus problem, buying new tires did not fix the problem... Front bumper keeps falling off, started after warranty ended... Driver interior door broke, periodically you have to enter via passenger side... Started after warranty...
There is a longer list of problems that Lexus did fix under warranty, for which I am grateful...
Unfortunately I have more problems with this one car, than the prior 15 cars I have owned combined..
Clearly Lexus has no idea how to build a luxury car or any kind of car... Sad, sad, sad...