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ivomir

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  • Lexus Model
    2009 IS350

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  1. No no I didn't say it was a new feature. I think he was talking to me. I said that the Lexus engineer said that the [AUTO] light is new for 09. I don't have a camera handy to take the picture, but my dash (I have the navigation system) looks like this: +-------------------------------------------------------------------+ NAV SCREEN +-------------------------------------------------------------------+ [AUTO] [fan OFF] [filter] [front air] [defogger] [air intake] The last button (air intake) has 3 lights: [recirculate air] [AUTO] [outside air] Pressing the button switches between the 3 states. In the AUTO state one of the other 2 lights is also ON. When not in AUTO mode, the computer can decide to switch to inside air when the AC is in AUTO (the first button under the screen) and it needs to cool off quicker. When in AUTO mode, aside from the AC, the computer can decide to use inside air when it detects exhaust fumes coming from the outside. The manual calls this "EXHAUST GAS AUTOMATIC mode" and says that only 350 models have it, but not 250. I don't know if 250 doesn't have [AUTO] mode because it is always ON, or just doesn't have an exhaust gas sensor. There are two AUTO labels (one for the AC and one for the exhaust mode), that's adding to the confusion. I hope my color coding helps clear things up a bit. If you have the same setup on your 08 IS 350, then the enginer I talked to was wrong (not surprising). Ivo
  2. Hi, guys I've had my IS 350 for a few months now. I have this annoyance when I drive with my window rolled down. At about 40 mph the air coming from it starts to pulsate (I think it's called "buffeting") instead of being smooth. At freeway speeds it starts to become unpleasant. One way I found to smooth out the air is to open the right-rear window as well (not always an option as there may be passengers there). I didn't have this problem with my old car (a Camaro). Possibly because it was a coupe and had much longer windows that were producing a better airflow. Does anybody know how to improve that? I've seen on some old cars these air deflector thingies attached to the front of the window. Is that what they are for? If so, can you recommend a brand that is compatible with Lexus IS? Thanks Ivo
  3. I read the manual more carefully and talked to an engineer at the service department. There are 2 reasons the car may decide to switch between inside and outside air: 1) When I set the AC temperature too low it switches to inside air to cool down faster 2) When the sensor detects exhaust fumes coming from the outside it will switch to inside air The "AUTO AC" button controls the first case. The "AUTO recirculate" button (the one that's failing for me) controls the second case. Also it is only present on IS 350 and according to the engineer is new for 2009 models. He said he wasn't familiar with the new system and will look it up for my next service. I don't hold my breath, but I hope in the next 6 months he will be dealing with more 2009 IS 350s and learn some more. It looks like either a software or hardware problem. If it is hardware, then the whole navigation system will need to be replaced or at leat removed for repair. This has the risk of them messing up something else in the process. I'd rather have to push a single button once every week than risk further damage :) If it is a software bug (quite possible, especially if it is a new feature), I hope if more people complain they will take notice and fix it.
  4. Are you saying it is on AUTO even though the light is not on? I should test that. But then how is the user to distinguish between AUTO (with the light off) and MANUAL? No, I leave everything on AUTO - the AC, the recirculate, even the headlights :) I want to set it once and not bother with it ever again.
  5. Hi I've had my 2009 IS350 for a few months now, and from the very beginning I've had this problem with the AC: You know that button that has 3 states - "recirculate", "outside air", and "auto". Basically I want it on "auto" ALL THE TIME. But sometimes (ranging from twice a day to twice a week) when I start the car it loses its setting and resets to "outside air". I can sometimes see the "auto" light turn on briefly as I am starting the car, and then turn off immediately. Anybody else has this problem? Thanks Ivo P.S. I am bringing my car to the dealer in 2 days for its first maintenance and I will ask them, but I want to see if it is a common problem first.
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