TPMS FAQ - All questions regarding TPMS, look here first. - Lexus IS Forum
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post #1 of 1 (permalink) Old 02-23-2009, 01:33 PM Thread Starter
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TPMS FAQ - All questions regarding TPMS, look here first.

TPMS (Tire Pressure Monitoring System) FAQ

What it does:
Measures the air pressure within your tire to ensure that it is properly inflated.

What happens if I remove them from my wheels OR they are not compatible with my aftermarket wheels?:
You will get a warning light on your instrument panel PLUS a warning message in the display screen. There is NO way to rid of this message through programming. If you have aftermarket wheels that are not compatible with TPMS, then you need to make a "pipe bomb".

How do I turn off the "low tire" warning in my dash?:

Inflate your tires with air to the correct PSI setting. (35-36 PSI) on stock wheels.

My TPMS light comes on when I start my car, but after a few minutes of driving, it turns off:
In cold weather, the sensor reads a lower PSI. As you drive, the air within your tires warm up, and thus the pressure is also increased.

I just filled my tires with air a few weeks ago, and it is showing me that I have low pressure:

A change in climate can affect the readings of the sensor because of the change in pressure of the tire. Climate affects the pressure within your tires.

When you get a set of 4 sensors programmed to your car as a 2nd set, does it matter what sensor goes in what wheel?
No, it does not matter. Unfortunately (in this case, fortunate) the Lexus TPMS isn't as "intelligent" as other TPMS. As long as 4 sensors are reading the correct pressure levels in each wheel, the warning light will not come on.

Can I use pre-04/2006 sensors on my post-04/2006 production Lexus?
Yes. [thanks to "mikes rx"]

TPMS Does:
  • Tell you that one of your tires is low
  • Tell you that a sensor is malfunctioning

TPMS Does Not:
  • Tell you specific tire pressure measurements
  • Tell you which tire is low on pressure or malfunctioning

If you have any other questions, FAQs or Facts regarding TPMS, please PM me and I will confirm and add.


©2006 my.IS
2015 F32 w/ N55 Alpine White

Last edited by kayotik; 11-10-2009 at 04:51 PM.
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