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/
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY
All Those Lights on Your Dashboard: They’re Not for Idiots Anymore
The First Warning Lights
In a simpler day, if your engine’s oil pressure dropped too low, your dashboard, or more properly, your instrument panel, would have had an analog oil pressure gauge displaying the pressure reading and a warning light, a red dot, that would come on to get your attention. Then some manufacturers did away with the gauge altogether, leaving only the red dot or “Idiot” light. There would have been a temperature gauge plus a light to warn a driver if the engine’s temperature rose too high. But now you might not see a gauge at all. In the meantime, “Idiot” lights have proliferated to the point of madness. And as a driver, you need to be a “road scholar” (sorry) to understand them all.
Idiot lights, or tell-tales, as they are known only in the industry, were designed to help drivers who didn’t understand how to read a gauge and to get your attention. To those who actually did know how to read the gauges, and watched them like a hawk, the tell-tales came to be known as Idiot lights. And the term stuck.
Warning Light Evolution
However, in today’s vehicles, there could never be a corresponding gauge to compliment a Check Engine light, or the ABS (anti-lock brake) light, or a Drivetrain Trouble light, or for any of the dozens of text and picture tell-tales that have permeated vehicle instrument panels over the last few decades.
There may be literally 20 or 30 picture or text tell-tales on a modern instrument panel, each connected to some system in your car. We’ve counted as many as one hundred in some models! And they may illuminate in twos and threes if a problem is detected. That is, a problem with one system causes other systems that are dependent on the first to be shut off. Each of those systems will have an associated, and now illuminated, tell-tale. Today, a driver needs to be an automotive prodigy to know what’s going on.
Maybe the most troubling about the “Prodigy” lights is that when one of them crops up, it indicates a problem or malfunction has already occurred. For instance, there is no gauge to indicate a change in the anti-lock brakes. If a malfunction occurs, a tell-tale appears. The same for an electronic throttle, the power steering, the stability control system, or any of the other advanced, and often electronic, systems.
So a “Prodigy” light comes on and a frustrated and often panicked, non-prodigy driver turns to his or her owner’s manual for help. Unfortunately, the common answer is to call your dealer. It is truly impossible for an average driver to memorize the meaning of all the lights, which all too many times includes a system acronym or abbreviation. In the end, drivers actually do feel like Idiots through no fault of their own.
Drivers need help and at DashboardSymbols.com, we are developing tools to do just that. The first tool is a Smartphone app that includes some 100 image and text tell-tales and their descriptions. The App is currently available for Android and Blackberry phones and under development for the iPhone. We ultimately intend to change the way vehicles communicate with drivers. In the meantime, if you are confused by the symbols that show up on your instrument panel, go to www.dashboardsymbols.com. There, you will find the most comprehensive list of automotive symbols available anywhere, and access to our tools. We’ll help you feel like a “Prodigy”, rather than an “Idiot”!
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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.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY