sthakor92

Hi my TPMS light has came on (Assuming its from the cold air) and I went to check the tire pressures and all of them seem to be different.. one rear was at 46 while the other was at 42 and so on. The sticker on the door says front 35 and rear 38. I was wondering if this is the same with the 18 inch wheels or if this only goes for the stock 17s. Its a 2011 if that makes a difference. Thanks!

Sango

iTrader: (10)

Make it 36-38 front and 38-40 rear. Should be fine since I have this set for 17" and 18" wheels as per the tire tech's recommendation.

Ideally, you may want to set the tire pressure when it is cold and initialize the sensors when the tires are warm.

sthakor92

after adjusting the pressure, how do i reset the tpms to get rid of the light?

jgr7

iTrader: (1)

It should reset itself if all is well.

Sango

iTrader: (10)

When car is stationary, switch on the satellite display on the instrument cluster to tire pressure display, and hold the on/off. It will beep and the warning indicator will flash three times.

Page 403. DYI - How to initialize the tire pressure warning system
http://drivers.lexus.com/t3Portal/do.../sec_06-03.pdf

This will reset the sensors when they will go off. Usually the sensor may go off if its too cold but not to worry because they are set to go off within a certain tolerance and come in handy when it is the real thing. Simply reset the sensor after making sure the pressures is good and you will be fine.

sthakor92

Thanks Sango! I got the pressure adjusted and reset the system and no more light!