Please wait while the page loads...

What Does the Check Engine Light Mean?

One of the most generally misunderstood lights or indicators in your Lexus is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few different ways. It can say "Check Engine", it can be a symbol of an engine, it can even be a combination of both. This light illuminates in either an amber or red color and is part of the diagnostics system found on your vehicle. Onboard computers increasingly have controlled and monitored vehicle performance since the 80s and do a variety of things for your Lexus. Some of these include controlling engine speed, ignition timing, shifting automatic transmissions and implementing stability control, just to name many. With that being said, the check engine light can mean a mixture of diversified things. It can be as effortless as your gas cap being loose or as alarming as engine knocking. If your check engine light is on in your Lexus, contact Nalley Lexus Roswell. Contact Nalley Lexus Roswell today! Our Lexus service department can aid you find out what code is turning your check engine light on or diagnose why your check engine light is flashing.

Check Engine Light Service Lexus

What do you do when you’re driving along in your Lexus and rapidly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Lexus owners, your heart sinks a little because you have little idea about what that light is trying to tell you or how you should react. The fear of the unknown (or the cost of the unknown) can be just as stressful. But take a deep breath and realize the light coming on doesn’t mean you have to pull the car over to the side of the road and call a tow truck, but it is recommended that you get your Lexus checked as soon as viable. Ignoring that warning could end up causing wide damage to expensive engine components.

When your Lexus 's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t exceptional, a computer turns on your check engine light. This amber or yellow light is typically labeled “check engine” or “service engine soon”, or the light may be nothing more than a picture of an engine, or a picture of the engine with the word “check.”

When the light turns on, the ECM stores an engine code or “trouble code” in its memory that identifies as the issue, whether it's a sensor or a failing engine part. This code is read with an electronic scan tool that is used by our Lexus auto repair mechanics at Nalley Lexus Roswell. There are also a number of relatively inexpensive code readers that are designed for do-it-yourselfers, should you select that route too. While this code will tell you the issue that is detected, a true diagnosis still requires an trained skilled to pick the issue and repair it.

How many miles can you drive with the check engine light?

It could be anything from a bad sensor to plug wires needing to be replaced. The safest bet is to decipher the code and then plan your strategy accordingly. If you check engine light is flashing, we recommend that you pull over and contact Nalley Lexus Roswell to help mean if your automobile is safe to commute in or if we recommend a tow truck. Since every check engine code has its own level of severity, it is laborious to predict how many miles you can commute with the warning light on.

What could cause the check engine light to come on in a Lexus?

When your check engine light comes on, this could be as commonplace as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a precarious problem that could cause precarious damage to your engine and come with a big repair bill. Depending on your make and model, the check engine light will illuminate or blink. A steady glow continuously means something less precarious but a flashing check engine light indicates that your vehicle’s engine is in precarious trouble and service is essential immediately. If your check engine light is flashing in your Lexus, we exceedingly endorse not to drive the vehicle and schedule Lexus service straightaway. Below is a list of the most common reasons your check engine light can come on:

  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your Lexus ’s exhaust system. The catalytic converter's function is to turn the carbon monoxide created by the combustion process into carbon dioxide. A damaged catalytic converter is usually caused by neglected maintenance, which is why Nalley Lexus Roswell offers a complimentary multi-point inspection with every Lexus service. If you have an issue with your catalytic converter and don't get it repaired, your Lexus will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your car may run at a higher temperature, too, which can cause other problems from overheating.
  • New Spark Plugs or Plug Wires are needed for your Lexus. The spark plugs are the part of your engine that ignites the air/fuel mixture in the combustion chamber of your vehicle. This explosion is what moves the pistons and makes the engine run. The spark plug wires deliver the spark from the ignition coil to the spark plugs. If your spark plugs or spark plug wires are bad or old, you will experience poor performance and reduced power. In some extreme cases, your engine will have trouble starting or continuing to run. Worn spark plugs and plug wires can cause clogged catalytic converter or damage to ignition coils and O2 sensors, big to more costly repairs.
  • Your Lexus has a vacuum leak. Every Lexus has a vacuum system that performs a gargantuan mixture of functions. The vacuum system also helps lower harmful emissions by routing the fumes as gasoline evaporates through the engine. If you notice that your RPM is high in idle or randomly surges, a vacuum leak could be the cause. Over time, vacuum hoses can dry out and crack, especially if they’re exposed to imposing heat or extreme fast.
  • One of the most prevailing and copious cause is that your Lexus gas cap is loose, damaged or missing. The gas cap for your Lexus serves multiple purposes. It prevents gas fumes from being released when you aren't driving, it seals the fuel system and helps maintain pressure within the fuel tank. What happens if you have a bad fuel cap? If your gas cap is old or has a ruptured seal, you can lose fuel through evaporation which will result in more trips to the pump. Luckily, to replace a gas cap isn't costly. If your check engine light turns on today after you put gas in your Lexus, first thing you should check is to make courageous the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump.
  • Your mass airflow sensor (known as MAF) needs to be changed. The mass airflow sensor in your Lexus is what determines how much fuel is needed to run your engine efficiently by measuring the amount of air entering the engine. As a part of the engine management system, the mass airflow sensor helps adjust to detailed changes, like altitude. If your Lexus is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor.
  • Your O2 Sensor (Oxygen Sensor) needs to be changed. The Oxygen sensor, known as the O2 sensor, measures the amount of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be fewer forceful when it comes to fuel economy. So what happens if I don’t replace your O2 sensor? A faulty sensor can not only affect your miles per gallon, but it can cause damage to your catalytic converter and your Lexus 's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to choose the right mixture of air and fuel that enters the cylinders in your engine. A bad O2 sensor can also cause a car to fail an emissions test.
  • Issues with any aftermarket items. An aftermarket alarm, exhaust or other item can wreak havoc on your Lexus if it’s not installed properly. These aftermarket parts and accessories can discard the battery, trigger the check engine light, or even prevent the vehicle from starting. If these issues sound prevailing, transport your to Lexus and have our team of certified mechanics ensure that your aftermarket items were installed correctly and aren't causing any issue. Getting accessories, especially aftermarket parts and accessories, or using OEM parts first place might cost a tiny bit more but could save you money from having to get poor work and damage caused by poor installation work corrected.
  • The battery is low or dead. The battery in your Lexus is every applicable. Without a car battery, your car won’t start, light up the road ahead, play the radio or charge your phone. Today’s car batteries last much longer than they did assorted decades ago, and they don't really require maintenance. The price of a new one depends on the type of Lexus you drive, but check our current service coupons and specials.

Will the check engine light reset itself?

The check engine light on your Lexus will usually shut itself off if the issue or code that caused it to turn on is serviced. For example, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will turn itself off. Likewise, if your catalytic converter is going persuasive, and you did a lot of stop-and-go driving, that may have turned on the check engine light due to the high usage of the converter. In most cases, your Lexus light will go off after about 20-40 miles. If you drive over that amount and the light is still on, you will need to bring it in to Nalley Lexus Roswell so the light and code can be double-checked and reset.

How much does it cost to get the engine light checked?

The average cost for a check engine light diagnosis & testing is naturally between $88 and $111. The satisfactory news, Nalley Lexus Roswell offers complimentary multi-point inspections and free diagnostics, in most cases, to aid determine the cause of your check engine light. The check engine light warns of issues ranging from a gas cap that's not perfectly tightened to a more critical failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it satisfactory to get the appropriate code reading and diagnosis.

Lexus Check Engine Light

If the check engine light in your Lexus starts flashing, that means that the problem needs brisk attention and your Lexus should be brought in suddenly. A flashing light indicates that the problem is rigid and if not taken care of suddenly may result in exciting damage to the car. This shining light usually illustrates a rigid engine misfire allowing unburned fuel to be deposited into the exhaust system. There it can promptly raise the temperature of the catalytic converter to a point where wear and tear is viable, requiring an pricey repair. Some owners ask if spark plugs cause the check engine light to flash? This can exactly be the cause. A bad, old or dirty spark plug can cause the engine to misfire. If your check engine light is flashing, please contact our team of automotive advisors at Nalley Lexus Roswell expeditiously by calling 7702848580. If the problem is ignored or you continue to drive, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a exceedingly fancy repair.

Lexus Check Engine Light Flashing

Although there are bountiful conceivable causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are disparate modern causes including something as effortless as a loose gas cap. Different modern reasons for a Check Engine Light are a malfunction with the fuel injection system, dirty mass airflow sensor, faulty emissions control part, faulty head gasket, damaged oxygen sensor, or defective spark plugs to name a few. No matter what is the root cause of the Check Engine Light, we have the Lexus Certified Technicians and the certified service protocol to isolate the root problem and repair it as mandatory to restore factory specifications. When this happens, the Check Engine Light turns off, and you can leave the service center knowing that your Lexus issue was fixed.

Every Lexus was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its decisive systems. The sensors are mostly detecting conditions while sending data to the electronic control unit. If the electronic control unit detects that the data is out of factory specifications, the Check Engine Light lights up telling you that there is a problem. However, that is the limitation of the Check Engine Light – it won’t tell you what exactly is inaccurate nor what to do about it. That’s where we come in; Nalley Lexus Roswell provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Immensely Qualified Service high-tech.

Is it safe to drive your Lexus with the check engine light on?

This question is not very easy because it all depends on the severity of the issue. If the cause is a minor issue, such as a loose gas cap, it should be safe to drive. This is naturally indicated by a consistent glow of the check engine light. If you notice a difference in the performance of the vehicle, it could be an indication of a more threatening problem. If the check engine light is blinking, this means that there is a threatening issue and it is recommended to service your Lexus instantly. Call the experts at Nalley Lexus Roswell by dialing 7702848580 so you can describe the issues. Or lower your speed and bring your Lexus to our certified mechanics as soon as handy.

Lexus Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that tiny light on your vehicle’s dashboard suddenly flashes, but in reality, it is not something that should cause you to shut down in fear right away. If you hear the term, diagnostic trouble codes (DTC), these are just another name for check engine light codes. These are automotive computer codes stored by the ECM, also popular as the OBD (on-board computer diagnostic system) in your. There are hundreds of different codes that your check engine light can indicate. While that sounds daunting, with a tiny patience, tackling necessary diagnostics will give you available knowledge about your car and will also allow that Check Engine Light to do what it is really supposed to do: be your guide. Unfortunately, notable and helpful car symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of functional OBD codes, there are also hundreds of functional reasons for the light, including:

  • Computer output circuit issues
  • Old Battery
  • Loose Gas Cap or Missing Gas Cap
  • Transmission issues
  • Bad Spark Plugs
  • Emissions controls issues
  • Ignition system faults
  • O2 Sensor
  • Fuel and air metering systems problems

This is why it is unusual for someone who does not have a lot of automotive knowledge to not assume what a code means. When your check engine light comes on, you should get it checked out hastily by a certified Lexus mechanic. If the engine light comes on due to a effective concern, you risk damaging your car extra by not repairing the issue right away. Call Nalley Lexus Roswell at 7702848580 today or schedule your check engine light service online today!