Tire Pressure Monitoring System Dashboard Indicators

Tire Pressure Monitor

This is the Tire Pressure Monitoring System (TPMS) or Tire Pressure Monitor (TPM) warning light symbol. It is also used as Flat Tire Monitor (FTM), which seems redundant. The tell-tale comes on when the inflation on at least one of the tires is reduced about 25% or more. In most cases, that will be about eight pounds. This is easily the most misunderstood symbol you will ever see on your instrument panel.

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This is a common light in the fall and winter when outdoor temperatures drop, which has the effect reducing the pressure in your tires—including the spare. This is a bit oversimplified, but cold air takes up less space than warm or hot air. In addition, a single leaking tire will also trigger the light, regardless of season.

If you typically park in a warm garage, the light may show up sporadically after the vehicle has been parked outside for a time, and then returned to a garage. This is a normal response to temperature change, but it would be best to ensure that the tires are properly inflated.

Remember that your spare tire may be part of the system and its pressure should also be checked.

More Versions

This text version simply says Flat Tire. While this may seem like it would be obvious to a driver, in truth the pressure in a tire can be very, very low and not result in a large change in the handling of some vehicles.

Many manufacturers now add a symbol or information display image that will highlight the tire or tires that are low on air, like the image to the left. Regardless of the symbol seen, the upshot is this: If your are at high speed, reduce your speed. If the tires do not seem to be visually low, it is likely safe to proceed to the nearest service station. The TPMS system will tell you when a tire is low, yes, but one of them leaking quickly, i.e. a single highlighted tire, is a greater danger.

This version features two arrows pointing at a ball in the center. It is most commonly found on a reset button on the dash, if one exists. It can, however, show up on the instrument panel of older vehicles and likely means that the system needs to be reset or could mean that a tire is low as well. Regardless, the tire pressures must be checked for the sake of safety.

This light holds the system’s primary acronym, TPMS. It is a Malfunction Indicator only. If your vehicle is equipped with this additional tell tale and it remains lit, the Tire Pressure Monitoring System is not operating and needs to be checked by a qualified repair facility.

If your vehicle has only the picture symbols, they will flash to indicate an actual malfunction.
Finally, it is important to note that the light could be activated by other factors. These include radio interference interrupting the system. This will clear when the signal is left behind. Or a wheel, such as the spare, may have been mounted on the vehicle that is not equipped with the TPMS sender.

To be safe, please check your tires…

Last but not least, this bit of silliness offers a different twist. It is the Tire Pressure Monitoring System Light Load indicator. It illuminates to confirm that the load setting is selected. It appears in black and white as the same slice of a tire, but with a feather inside. The setting essentially tells the TPMS system to expect lower tire pressures, as there is little loading inside the vehicle.

Check out the videos below.

And one checking and filling the tires.

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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the  use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.

These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.

Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.

Related posts:

https://dashboardsymbols.com///2013/08/be-ready-for-your-cars-seasonal-tire-pressure-check/