I just installed a set of snows on my IS250AWD.

I went with 16" Koenig Further rims so that I could get a higher profile 50 series tires. I had Lexus TPMS sensors installed.

After installing the wheels the Tire pressure warning light did not come on.
Any ideas why?

I then set the satellite control to 2nd set of wheels, hit the initial pressure set button. Everything seemed normal, still no warning light.

Any ideas what's up?

The sensors were not yet registered by my dealer.
They will be registered tomorrow when it goes in for service.

 

if ur tpms are installed wit the rims its not gunna come on.

 

These were new sensors in new wheels, not the original sensors.
Don't they have to be registered before the car will recognize them?

 

Response from dealer:

the unregistered sensors were undetected by the car. The computer generated a fault. Eventually the check engine light would have come on.

Any comments on the above?

 

I just changed my tires and wheels to my snow set that have new sensors that are unregistered and it was over 20 miles before any warning showed up.

 

thoughs tires are balloons! Great traction!

 

They're 50 series snows. The stock tires were 45 series.
I should have better handling in snow with the higher profile.
So far they feel pretty good on dry roads.
But I can always run the SC in nice weather, I tend to have the top down as long as the temp is over 35

 

Wow I was thinking about the same thing on what will happen if I install new TPMS on a different set of rims. Keep me update cause I want to know as well.

 

The wheels went on yesterday. That was when the problem was noted.


the car went in for its' 5K service today and the Sensors were registered and the wheels are now set up as the 2nd set option on the computer.

 

When I switched out my wheels, it took about 20 miles of driving before the light came on.

 

Thanks now I know that I have to go to the Stealer if I want to get a second set of TPMS. Hey did the Stealer charge you adding new sensors?

 

It's a long story, but they were a courtesy from Lexus.

 

Well good to hear that you got yours for free.

 

I've heard that some dealers charge $105 to get the tpms registered.

 

Wow, that's gonna hurt when I get mine done next Spring wthen the summer wheels go on for the first time. Actually that's about the cost for each new TPMS. Maybe its a good time to start to buddy-up with the service manager.