i have a "check system" warning on my dash, does it mean that my tire sensors are bad?, i need help...... thanks

 

Hard to tell.
When I got my car, the sales person who filled up my car at the dealer did not close the gas cap properly after filling up gas and it went on shortly after.

 

Is the the tpms light on as well? We need more info if you are looking for help.

 

same problem both lights are one tpms and check system and tire pressure is good but I cant find my reset button on my 2007 450h.

 

Well check if the switch underneath the glove box was tripped. The car can programmed for two TPMS's. Try pressing that switch and see if the light shuts off. This happened to me after my car got detailed. Let us know if that works. Good luck.

 

I did try pressing that button you speak of and got nothing, all the dealer (not lexus) keeps doing is clearing the code, then after a couple hours it comes back, now i have been told that the weather change will trigger it, but it seems like im gonna have to go to a Lexus dealer to rectify said problem, but I'm gonna try to replace all the sensors first, and yes the tpms light is on plus the red light

 

Ok well it sounds like you have a deeper problem. I would try and checking if your dealer has a handheld scanner that can determine if the sensor is dead. All they do is put the scanner next to each sensor and they are able to get readings from each sensor and the one that doesn't respond usually means its dead. Well good luck with this and hopefully they find the issue, cuz that light is sure annoying.

 

This message just showed up for me after driving over some bad roads on the way to visit relatives. The pressure on the front driver's side tire was way down but a few days after I filled it, the message still hasn't gone away.

Did I break off one of the TPMS sensors or something?

I'll try that switch under the steering wheel but I'm not hopeful at this point...