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

Most commented posts

  1. Information Displays and Message Centers — 10 comments

Author's posts

Lambda Sensor Warning Indicator Symbol

Lambda Sensor

Lambda Sensor IndicatorThis is the Lambda Sensor Warning Indicator symbol. The symbol says that the exhaust gas oxygen sensor is dirty or inoperative. The vehicle should not be driven for any length of time in this condition as this sensor is key to controlling the oxygen to fuel ratio in your engine. The Greek letter lambda looks like an upside down Y and it is shown in a triangle.

  • 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!

The symbol is an odd mix of green and yellow/amber colors, not to mention a letter from the Greek alphabet, and is seen only in older vehicles. Yellow/amber is a warning color while green is intended to inform and not to warn. The Check Engine Light is used to covers this fault in later models.

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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Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow.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/2012/07/lambda-sensor-warning-indicator-symbol/

Engine Start-Stop Indicator Symbols

Engine Start-Stop

Engine Start Stop IndicatorEngine Start Stop Fault IndicatorThese are Engine Start-Stop Indicator symbols. The abbreviations actually stand for Engine (ENG Auto Stop (A-STOP)). Green indicates that the engine has been shut off, while the light in yellow/amber indicates a malfunction in the system. The engine remains running and the vehicle can be driven.

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

Developed for hybrid vehicles, Start-Stop systems are now in use in vehicles with gas engines as a fuel saving measure. The engine is shut down at stop lights, etc., and re-started automatically when the gas pedal in depressed.

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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/2012/07/engine-start-stop-indicator-symbols/

Automatic Transmission Warning Indicators

Automatic Transmission

Automatic Transmission Fault IndicatorAuto transmission check indicatorThese are Automatic Transmission (AT) Warning Indicator symbols. The first symbol indicates an electrical, rather than a mechanical,  problem with the transmission. Continuing to drive could cause damage to the transmission that would likely be very expensive to repair.

  • 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!

The second, AT CHECK has a broader meaning, where any problem with the transmission would generate the warning.

Another Version

Transmission fault indicatorThis also is a Transmission Fault Indicator. It is made to resemble a transmission if seen from the side in yellow/amber. The manufacturer who uses this symbol states that the vehicle can be driven carefully for a short while.

In any of these cases, contact your dealer or authorized service center 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/2012/07/automatic-transmission-warning-indicator/

Fault Warning Indicator Symbols

Fault Warning

Critical Fault IndicatorNon-critical Fault IndicatorThese are Critical and Non-critical Fault Indicator symbols found in electric vehicles (EVs). It will appear yellow/amber at the first sign of a problem. Power may be reduced automatically, but the vehicle can be driven safely for service.

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

A red Fault indicator points to a serious problem. If the vehicle does not shut down on its own, stop driving to avoid serious damage and have it brought to your dealer or authorized service center immediately.

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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/2012/07/fault-indicator-symbols/

All Too Common Keyless Ignition Headaches

Keyless Ignition Headaches

The development of hybrid vehicles all but required a change in the way a car is started. A hybrid deems itself “Ready” (or not) with the ignition on, and the gasoline engine is started with a press of the gas pedal. Thus were born keyless ignition, or push button start, systems. Well what are perceived as the coolest gadgets ultimately will always find their way into everything eventually, and these systems are no exception. But what looks and feels cool comes at a price.

Which is a dead key fob, or remote control, battery. Most of us have used keyless entry for years, unlocking our cars with the touch of a button. But in order to start the vehicle without a key, the remote control must send out and/or receive a radio signal continuously, or nearly so. As a result, the life expectancy of the battery in the key fob can be as little as 12 months. Thousands upon thousands of drivers are caught unprepared by this in their busy, busy lives every year.

The industry sees this as little more than a trifle, despite the number of calls that come in to service departments and roadside assistance centers every day. They wash their hands of the problem noting that the vehicle does, in fact, notify drivers when the key fob battery is weakening, and that there is a back up plan for getting in and getting moving even when the fob battery has died.

Why It’s Still a Problem

However:
– The back-up instructions are treated as an afterthought in owner’s manuals, buried inside what are today 500+ page tomes.
– And the manual is necessary because, there are no standard means for starting the vehicle when this happens. Not between manufacturers and sometimes not within product lines!
– There is also no standard means for retrieving a hard key to get into the vehicle from manufacturer to manufacturer.
– And for five vehicle manufacturers, there is no visible keyhole in the driver’s door for that hard key!

The disrespect for drivers is appalling. You can well bet that the designers of those hidden keyholes have NEVER talked a panicked driver through the process of prying off a piece of a $50,000 vehicle in order to find key cylinder on a cold winter night in a dark parking lot. A very, very vulnerable position that you do not want to be in, or have a loved one in. And this so that a single square inch of the vehicle can be more attractive!

And once inside, two manufacturers have six different methods for starting the vehicle, and another has four. Most have at least two starting methods. A driver will be lucky indeed to get someone on the phone at a dealership – assuming they are open – who knows how to start a particular model.

There are many good reasons for keyless start systems: theft deterrence, convenience, even pain relief for some. But let’s standardize the back-up plans and give drivers a break! Yes, satellite services can open and start a car – if the service is available and paid for. It is no excuse for the schizophrenic approach now employed by the industry.

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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/2012/06/the-trouble-with-trifles-keyless-ignition-headaches/

Rear Differential Temperature Indicator

Differential Temperature

Rear Differential Temperature IndicatorThis is a a Rear Differential Temperature Indicator symbol. If this light is on while the engine is running, it indicates that the oil in the rear differential is too hot. If you are driving, reduce your speed and stop at the nearest safe place. Allow the differential to cool down and the light to go out. The vehicle will then be safe to drive.

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

If the light recurs, stop again and allow time again for the differential to cool down. If overheating continues to occur or if the light does not go out at all, call your dealer, service center or roadside service for assistance.

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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/2012/05/rear-differential-temperature-indicator/

All Wheel Drive Trouble Indicators

All Wheel Drive

All Wheel Drive Trouble IndicatorAWD Trouble Indicator 2These are the All Wheel Drive (AWD) Trouble Indicator symbols. These lights will be on when All-Wheel Drive is disengaged and the drive mechanism is switched to Front Wheel Drive for maintenance or if there is a problem with the system. The car can be safely operated in front wheel drive.  With the exception of the red symbol below, all these symbols appear as yellow/amber.

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

eAWD IndicatoreAWD indicatorOf course, if the vehicle is electric (EV), it gets its own indicators. The only reason to do this is that the All-Wheel Drive system is actually electric. In yellow/amber/orange, the electric AWD system is limited, and will turn off when the system is working normally.. In red, there is a malfunction. A good repair shop or your dealer will be needed.

All wheel drive failureThe symbol to the left also includes a stick figure image meant to look like four wheels with the front wheels turned to the right. All these lights incorporate the AWD acronym and may include an exclamation point. Malfunctions may be indicated by the system before a real problem is obvious, but don’t waste time. Have the system checked out as soon as possible.

These symbols will flash if the vehicle is fitted with tires of differing diameters or if the air pressure in any of the tire drops dramatically. The AWD system will be unavailable, but the main front or wheel drive wheels will operate normally. The Tire Pressure Monitoring System (TPMS) light will also very likely be lit, if the vehicle is equipped with the system.

Aff Wheel Drive only Engaged IndicatorSome older vehicles use this red FWD light to indicate a problem with an All Wheel Drive system. FWD stands for Front Wheel Drive, and in this context means that the AWD has been disengaged automatically due to the problem. Only the front wheels will be available until the AWD system is repaired.

Related Symbols

All Wheel Drive DisabledAWD Malfunction IndicatorThe picture symbols shown to the right are very much related. 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/2012/05/all-wheel-drive-trouble-indicator/