Marc Favreau

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

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  1. Information Displays and Message Centers — 10 comments

Author's posts

Catalytic Converter Warning Symbol

Catalytic Converter

Catalytic Converter Warning SymbolThis is the Catalytic Converter Warning symbol. The image, which looks like flames, heat or wavy lines rising from a pipe, indicates an overheated, damaged or malfunctioning catalytic converter. The converter is vital to the proper operation of the engine, so some vehicles may reduce the engine’s power automatically. And of course, it will be very hot. The vehicle will require service immediately.

  • Before continuing, are you sure this is your symbol?? If yes, then read on below.
  • Otherwise you can return to our main Picture Symbols page and scan again!

In newer vehicles, the sensors reading the catalytic converter trigger the Check Engine Light, one of hundreds of functions covered by the that particular warning symbol.

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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Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow.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.

Permanent link to this article: https://dashboardsymbols.com/2011/11/1668/

Automotive Warning Light Anti-logic

There Is Little Logic In Warning Lights

We’ve taken thousands of calls in service departments over the years and there is nearly no end to the way drivers describe the various warning lights that pop up on their instrument panels. These, of course, are not car people, just average every day drivers trying to describe a symbol that was presumably designed to be universally understood around the globe.

The Best Example

Tire Pressure Monitor SymbolThe Tire Pressure Monitoring System (TPMS) symbol is the least understood of all and sees the greatest variation of descriptions. It is also what prompted us to pay attention to and collect more descriptions of other symbols. The TPMS light is supposed to be a slice or cutaway of a tire. In all our years in the automotive industry, we have never actually seen a tire slice or met someone who has seen one. How are average, every day drivers supposed to recognize it the first, second or even the third time they see it?

Some TPMS warning light description are:

  • An exclamation point in parenthesis
  • An exclamation point in brackets
  • An exclamation point in a horseshoe
  • Flames – destined to be a classic
  • A wishbone
  • An exclamation point in a fish bowl
  • An exclamation point in a cup
  • And, a real favorite, a candle in a glass!

Other Examples

The descriptions fall out of each person’s life experiences. So take the example of a recent call from a lady who was driving at the time (which is important to the story) who said there was a flashing red light on her dash. When asked to describe it, she said, “well maybe a man riding a horse”.

Seat Belt Reminder SymbolSo, imagine someone who perhaps breeds horses, or simply rides them as a pastime. She’s driving and cannot actually stare at the warning light. Plus its flashing, which can give the illusion of movement. It turned out she was not wearing her safety belt and the Seat Belt Reminder light was on!

Oil Trouble Indicator SymbolThe example that really told us we had to post these, was a call that described a red warning light as a Genie’s lamp! We love it, and can only imagine the driver had just watched a favorite cartoon with her kids! It is, of course the Oil Pressure light. Most vehicles simply don’t go through oil like they did years ago, so seeing this light is actually quite rare, but no less important than it ever was. More to the point, the old style oil can image is completely missing from recent generations’ day to day experience. Thus it gets interpreted as something that actually is familiar.

Cruise Control Indicator SymbolThis one was described as a “green dot with a line through it”. The driver was at the wheel at the time, which is the only explanation for that description for this Cruise Control symbol.

Parking Assistance SymbolYou’ll love this one. We’ve had a number of drivers call this one a “P with a sailboat next to it”! How a sailboat could ever be associated with a car is anyone’s guess, but this Park Assist symbol includes what is supposed to represent a radar signal bouncing off an obstruction. The obstacle looks just a bit too much like a sail.

Differential Lock IndicatorThis version of the differential lock symbol has been described as a letter H with an X in it. Some manufacturers include a tell tale with Os in it to indicate free wheeling. We await a tic tac toe game description from a driver!

Tail Light Out Indicator SymbolThis is easily recognized as an image of an automobile. However, it has eyelashes! Of course, the eyelashes actually represent light beams emanating from from lights. Tailights in this case. A light out indicator in fact.

Check Engine Light SymbolSadly, we’ve heard a dozen descriptions for the Check Engine light that have nothing to do with an actual engine seen from the side, and never thought to save them. We do remember one customer who called it a fan. At least there is one in the image!

Since first running this article, a customer called to talk about the movie camera light on her dash. We’ve also heard of a driver who thought it resembled a “personal underwater exploration vehicle”! The fan becomes a propeller. That light did not have the word “Check” embedded in it. And we just heard from a man whose son described what eventually turned out to be the Check Engine light as “three elongated circles with some lines connecting them.” We can’t see that no matter how hard we try!

Most recently came the possibility that it was a helicopter! Again, a version of the light without the word “Check”. Now, we can actually see this one from both the fan on the left and what is supposed to be an air cleaner at the top but how a driver in an automobile comes to think of a flying machine remains a mystery!

We’ll post more as they come up, for any and all symbols.

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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.

Permanent link to this article: https://dashboardsymbols.com/2011/11/automotive-warning-light-anti-logic/

All Those Lights on Your Dashboard: They’re Not for Idiots Anymore

The First Warning Lights

Oil Trouble Indicator Symbol 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

Check Engine Light SymbolHowever, 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.

Slip Indicator SymbolMaybe 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.

VDC Off IndicatorDrivers 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.

Permanent link to this article: https://dashboardsymbols.com/2011/10/all-those-lights-on-your-dashboard-they%e2%80%99re-not-for-idiots-anymore/

Distance Warning Indicator Symbols

Distance Warning

Distance Warning IndicatorVehicle ahead detected indicatorFollowing distance warning indicatorDistance warning indicatorThese are Distance Warning Indicator or Vehicle Detection Indicator symbols. It is a warning that a vehicle in front is too close or is being approached too quickly, or that a stationary obstacle exists in the direction of travel. It may be a stand alone system or a part of some manufacturers’ active cruise control systems.

    • Before moving on, are you sure this is your symbol??
    • If not, you can return to our main Picture Symbols page and scan again!

The first image shows a car inside a red triangle. The second shows a vehicle in a gray scale star-like structure. It would appear in the vehicle’s information display. In any case, it is likely time to apply the brakes, and if you’re reading this now, you clearly did!

The last two are similar showing one car approaching another with a line and exclamation point in between in yellow/amber with a final one in red. The difference is that the cars are whole or in part, which makes the image easier to interpret. Depending on manufacturer the color may move to red as the distance shrinks and is deemed to small.

Similar Symbols

Collision warning 2Forward Alert IndicatorNote that the symbols to the right are very similar and have a similar function. Click here to learn more.

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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.

Permanent link to this article: https://dashboardsymbols.com/2011/09/distance-warning-indicator-symbol/

Attention Assist Indicator Symbols

Attention Assist

Attention Alert Indicator SymbolAttention indicatorDriver alert indicatorThe image of a steaming hot cup of coffee is an Attention Assist Indicator symbol. For some manufacturers the symbol is part of a Driver Alert System. If the vehicle is equipped with the option, the symbol will be shown after a pre-set period of time suggesting a break from driving. It will be accompanied by a warning tone and a text message on the instrument panel’s display.

  • Before continuing, is one of these truly your symbol?? If yes, continue on below.
  • Otherwise you can return to our main Picture Symbols page and scan again!

The color of the symbol is not really relevant, but may be seen in black and white, red or yellow/amber/orange. It does not indicate a fault in the car, it is simply used to alert the driver that he or she has been behind the wheel an extended period of time.

Driver alert system fault indicatorAnd immediately after saying that color does not indicate a fault in the alert system, we find this symbol, in yellow/amber/orange. It does indeed indicate a fault in the system, which should be addressed as soon as possible. Consult the your car’s owner manual to determine if it is a fault light, particularly if you have not been driving long.

More Versions

Alert Time Indicator SymbolAnother manufacturer adds the exclamation point, as seen in the symbol to the right, if the vehicle detects that it is being driven erratically. An audible tone is also added and likely a text message. The tone and message will be repeated if the driving pattern continues.

Sleep detected indicatorFinally, we have this version. Updated systems are able to detect a driver nodding off at the wheel! And so this symbol, which is a bell with three letter Zs, is shown and accompanied by a warning tone. This will continue until the driver turns it off. This part of the system is also limited by the ability to see the driver’s eyes. See more on this subject here.

If you see any of these symbols, it would be wise to take a break!

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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.

Permanent link to this article: https://dashboardsymbols.com/2011/08/attention-assist-indicator-symbol/

Water in Fuel Indicator Symbols

Water in Fuel

Water in Fuel Indicator SymbolWater Trap IndicatorWater in Fuel Indicator 2These are all Water in Fuel Indicator symbols found in diesel powered vehicles. Diesel powered vehicles are equipped with separators that remove water from the fuel.  Note that if you have just re-fueled, the fuel may be contaminated. The engine should be switched off as soon as possible or the fuel injection system could be damaged.

  • But first, is one of these truly your symbol?? If yes, then continue on below. 
  • Otherwise return to our main Picture Symbols page and scan again!

Water in fuel indicatorDrain water in fuel indicatorEach image includes at least a drop of water or wavy lines or both. Other images are meant to resemble canisters. These filters need to be serviced periodically, and one of these lights serves to tell you when. This filter system is termed a Diesel Fuel Conditioner Module (DFCM) by some manufacturers. The final image looks like a tank or box with lines in the bottom half and a possible open area at the top.

So unless as noted above you have just refueled, the vehicle is safe to drive, but the water should be drained as soon as possible.

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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.

Permanent link to this article: https://dashboardsymbols.com/2011/08/water-in-fuel-indicator-symbols/

Exhaust Particulate Filter Warning Indicators

Exhaust Particulates

Diesel Particulate Filter symbol indicator 1Diesel Particulate Filter symbol indicator 2Diesel particle filterExhaust filter indicatorThese are variants of Exhaust Particulate Filter Warning symbol indicators. Initially used only for diesel powered vehicles, filters have been added to exhaust systems in direct injected gasoline powered vehicles as well. They are Diesel Particulate Filter (DPF) and Gasoline Particulate Filter (GPF), respectively.

  • But first, is one of these truly your symbol?? If yes, then continue on below. 
  • Otherwise return to our main Picture Symbols page and scan again!

This is an emissions control system and the filters exist to trap soot before it can be emitted to the atmosphere. Under normal driving conditions, the exhaust becomes hot enough to burn off the soot, regenerating the filter.

The light will be green during DPF of GPF regeneration. A yellow/amber light means that regeneration is needed, which is done automatically while driving. A manual regeneration procedure is generally available and involves driving at 50 mph (80 kph) long enough for the light to resolve. There are also recommendations to hold the rpm above 2,000, so a lower gear may be needed, and another that calls for intermittently releasing the accelerator for a few seconds.

More Versions

A red light indicates that the DPF requires regeneration immediately, so follow the procedure above. If the filter is not attended to, the check engine or service engine soon light will come on and engine power will be reduced. Check out some similar symbols below, which apply to diesel powered vehicles only.

Diesel Exhaust FilterDiesel Exhaust Filter 2AdBlue indicatorThe symbols to the left indicates that the Diesel Exhaust Fluid (DEF) (AdBlue) is low. The fluid creates a catalytic reaction that removes particles from the exhaust. When low, the fluid must be topped off. The fluid will need to be replaced if it is contaminated. To the right is another particle filter symbol. It may appear with an exclamation point in it indicating a failure of the system or that engine emissions are too high. Contact your dealer or authorized service center in order to properly address any failures.

All of these odd looking images are meant to indicate exhaust flow through a pipe. Lots of wavy lines, pipe openings and what could even be interpreted as flames are used.

Water Trap IndicatorWater in Fuel Indicator 2Water in Fuel Indicator SymbolNote that the diesel symbols seen to the right may be in play as well. Click here for more.

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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.

Permanent link to this article: https://dashboardsymbols.com/2011/08/diesel-particulate-filter-dpf-warning-symbol-indicators/