tpms sensor

[bkblitzed]

Is it really needed? Ive always hand checked my tire pressure and never owned a car with a tpms in it. Just wondering because i got new wheels and they're mounted without me knowing the car has a tpms in it lol, so i would prefer to just throw em on without removing a tire and installing it.

[SliverBrz]

Uhh it isn't needed but do you want that light on your dash?

[Anaxilus]

No. You can clear the light.

[bkblitzed]

I was just worried since some cars wont let you cancel traction. But if that doesn't matter in our cars than fuck it ima keep em off.

[TheseColorsDontRun]

How do you disable it?

[red_comet]

Originally Posted by TheseColorsDontRun

How do you disable it?

+1

Id like to know, too

[The_Societan]

Left for work today and noticed the car was having difficulty staying in a straight line when I accelerated. Then I noticed my TPMS light a moment later. When I got to the gas station, I checked my tires, but they looked fine. Then I checked again when I got to work, and the left rear tire was a little low. These tires don't show underinflation like I'm used to. Thankfully I have a little emergency air compressor that plugs into the 12V outlet... I was able to fill it back up so I could get home. But I'm going into the dealer tomorrow to have them fix it.

I am never going to turn off that TPMS indicator. I know some folks have changed wheels and either didn't want them in the new ones(for weight reduction purposes, ha) or just didn't want to pay to have them installed. But I think they are a valuable thing to have.

I wonder if the dealer will fix my tire under warranty... (3700 miles) Going in first thing tomorrow

[BOLT]

Originally Posted by red_comet

+1

Id like to know, too

You cannot ever disable your tire pressure warning light/indication system. There are certain situations where your tpm system will warn you of another problem not only to do with tire pressure such as a faulty wheel speed sensor or wheel bearing. I think having this system is a luxury, low end models will not have this. Especially if your not rocking run flats you'll save the cost of a brand new tire if you ever puncture it.

[wparsons]

The TPMS system on these cars won't warn you about a wheel speed sensor or bearing, they have actual pressure sensors inside the tire and don't rely on wheel speed readings, etc.

As for disabling TC/etc, not having TPMS' doesn't effect anything at all except the light on the dash. I run my snows without sensors and I can still totally disable TC/VSC anytime just like usual.

[BOLT]

Originally Posted by wparsons

The TPMS system on these cars won't warn you about a wheel speed sensor or bearing, they have actual pressure sensors inside the tire and don't rely on wheel speed readings, etc.

As for disabling TC/etc, not having TPMS' doesn't effect anything at all except the light on the dash. I run my snows without sensors and I can still totally disable TC/VSC anytime just like usual.

Like I said.. In certain situations a wheel speed sensor will be reading a normal rpm value rating but the abnormal frequency of the broken WSS will actually disturb the tpm sensor and illuminate the warning light. Obviously there is "actual" pressure sensors.. This is common sense via the thread title.. Tire pressure monitoring system sensor. My point is that this system serves a purpose so use it, takes 5 minutes to swap 4 sensors to a new set of rims

[foursix86]

Originally Posted by BOLT

Like I said.. In certain situations a wheel speed sensor will be reading a normal rpm value rating but the abnormal frequency of the broken WSS will actually disturb the tpm sensor and illuminate the warning light.

No, a faulty wheel speed sensor will never illuminate the TPMS lamp. The ABS lamp; yes.

[BOLT]

Originally Posted by foursix86

No, a faulty wheel speed sensor will never illuminate the TPMS lamp. The ABS lamp; yes.

Anything creating interference with the signal (frequency) in between the sensor and ECM will illuminate the tpms lamp. By the way I love lamp, No.. It's Malfunction Indicating Light, MIL. Disprove my statement than, I demand an explanation.

[foursix86]

MIL=Malfunction Indicator Lamp, or more commonly called the "check engine light". The TPMS lamp is turned on or off by the door control receiver, which is located under the package tray. It's also the module that receives RKE commands. It's an RF receiver. The TPMS sensors transmit to this module. Wheel speed sensors have nothing to do with TPMS in reference to the FR-S/BRZ. Now if we were discussing VW Jetta/Passat/etc., then yes; the wheel speed sensors in those cars are responsible for turning on the TPMS lamp. That system works by detecting a tire that is deflated below threshold by measuring how many revs per time unit each wheel is rotating. A more deflated tire has a smaller diameter and will therefore have more revolutions per time unit and thus signal the appropriate module to illuminate the TPMS lamp.

[wparsons]

Originally Posted by BOLT

Like I said.. In certain situations a wheel speed sensor will be reading a normal rpm value rating but the abnormal frequency of the broken WSS will actually disturb the tpm sensor and illuminate the warning light. Obviously there is "actual" pressure sensors.. This is common sense via the thread title.. Tire pressure monitoring system sensor. My point is that this system serves a purpose so use it, takes 5 minutes to swap 4 sensors to a new set of rims

Lots of german cars run TPMS systems without pressure sensors, they use wheel speed readings to determine if a tire is low.