Why Is My BMW Engine Light On?

There are several distinct recognized causes of a Check Engine Light, including malfunctioning emissions control components, a failure with the fuel injection system, defective spark plugs, a filthy mass airflow sensor, a damaged oxygen sensor, a faulty head gasket, and more.


The most frequent causes of the BMW Check Engine Light include: * A loose, broken, or missing gas cap

The fuel injection system, defective emissions control components, a dirty mass airflow sensor, and defective ignition systems are additional common causes of a check engine light.

Reasons for Checking Your Vehicle Possible Engine Light On

The check engine light on your car may have come on for a number of different reasons. Some of the most frequent reasons for your check engine light to illuminate are listed below:

  • Gas cap that is loose, broken, or missing. The gas lid keeps fuel from evaporating out of the tank. In order to maintain pressure, it also seals the gasoline tank. If the check engine light comes on, one of the first things you should look for is the gas cap. Ensure that it is safe.
  • defective head gasket. The cylinder heads and engine block are separated by the head gaskets. If the head gasket on your car has ruptured, there may be an oil or coolant leak, or the coolant and oil may be mixing.
  • Oxygen sensor damage. The oxygen sensor gauges the amount of oxygen in the exhaust system of your car. This will decrease the fuel efficiency of your car if there is too much oxygen in the exhaust system due to a failure. It can affect your car’s catalytic converter or spark plugs if it isn’t replaced.
  • defective spark plugs. Spark plugs are essential to the operation of your car’s engine. Your car’s performance and power will be considerably worse and diminished if you have damaged spark plugs or spark plug wires, and the engine may even be unable to start. If defective spark plugs are not replaced when necessary, further car problems may result.
  • Transmitter problems. To provide the wheels the power they need to go at a certain speed, the transmission of the car changes gears. You can notice vibrations and/or accelerating concerns if your car’s transmission isn’t working properly. When you suspect problems with the transmission, you should have it repaired right away because it is an expensive repair. This will guarantee your on-road security.
  • Dead or low battery. Your car’s battery is essential for starting it. Your car can start slowly or not at all if the battery is low or dead. It can be jump-started, but it’s wise to get a dead battery changed so you aren’t left stuck.

Call Now! (847) 265-5440

When the check engine light (also known as the malfunction indicator light or the service engine soon light) illuminates, one is almost usually overtaken by a feeling of dread. After all, your BMW looks to be functioning just fine. That is occasionally followed by bewilderment and denial. If the light turns off after some time of driving only to turn back on later, the sensation can be even worse. Since BMWs are among the world’s most dependable automobiles, whatever goes wrong is presumed to be significant.

Your check engine light is programmed to watch for problems with your BMW’s emissions system and to illuminate when it does. Even though the light indicates “check engine,” there could be a hundred various causes for the defect that is turning on the light. Some of these problems are very serious, while others are not. A loose gas cap is one of the most prevalent “not so serious” reasons of a check engine light. The system will identify the issue and turn on the light if you fill up your BMW but neglect to tighten the gas cap. O2 sensor problems, exhaust leaks, or even catalytic converter problems, among other, more significant problems, could exist.

It is advised to visit The Euro Shop’s ASE certified BMW servicing and repair specialists right away if your BMW’s check engine light does turn on. Your BMW is warning you that something is wrong and that continuing to drive could seriously harm the engine. The only way to properly understand what is happening within your BMW is to have it serviced by one of our knowledgeable BMW repair specialists. If your BMW check engine light is on, call us right away to set up an appointment for service. (847) 265-5440.

The top 5 causes for your BMW Check Engine Light to illuminate!

In BMWs, the check engine light is intended to alert you to a problem that needs fixing. Even though the problem may be very straightforward and simple to resolve, it is always important to be cautious and identify the precise root of the problem.

It’s always a good idea to see a BMW expert to make sure you aren’t endangering the health of your car by ignoring the issue.

Why does the check engine light come on?

The check engine light, also known as the Engine Management Light (EML), is a dashboard warning sign for BMWs. It will turn on if more serious problems are found in the components or systems of your car that interact with the engine and the exhaust systems that link to it.

The main computer in your BMW, also referred to as the ECU or Engine Control Unit, is directly connected to the engine management light. The check engine light and an error code will turn on if the ECU notices a problem in one of the aforementioned systems. This can be used to appropriately identify the issue and fix it.

Depending on how serious the problem is, a driver must decide how to react right away to the EML. If the vehicle still seems to be in good working order, reduce your speed and head straight for a shop that specializes in repairs. However, pull over and request a rescue truck to tow you to a repair facility if the EML flashes red or if your automobile no longer feels safe.

What does the BMW engine light signify?

A constant glow normally denotes something less serious, but a check engine light that flashes suggests your car’s engine is seriously damaged and needs quick repair. We strongly advise not operating your BMW while the check engine light is flashing and setting up BMW servicing right away.

Is it legal to operate a BMW with the engine light on?

One of two things can happen when the check engine light turns on: it can either stay on or it can blink.

You can continue driving for a short while if your check engine light comes on but is not flashing, which indicates that the problem is probably not significant. However, it is advised that you schedule a certified BMW mechanic to examine your car as soon as possible.

The cause of the check engine light is almost certainly a major problem if it is flashing. You should safely pull over and have your car towed if it is performing poorly or making strange noises. Consider stopping if the check engine light is flashing but the rest of the car appears to be in working order. Speak with an expert auto shop to find out whether you can drive to a technician or if you need to have the car towed.

The check engine light should always be checked if it appears on your dashboard. Even little problems can develop into larger ones that cost you more money and cause more harm.

Will a BMW check engine light automatically reset?

Since the Condition-Based Servicing system is used by the majority of BMW models, your check engine light ought to automatically turn off after the problematic issue has been fixed.

Why is my engine light on when there doesn’t seem to be a problem?

The on-board diagnostic system uses the “check engine” light to alert you of problems. However, that something might be any number of other things, great or tiny. It might turn on due to a minor issue, such as a gas cap that is loose or broken. It might also indicate a serious engine breakdown.

Why is the car running great but my engine light is on?

Consider yourself on the road when your car’s check engine light abruptly appears. A check engine light usually signals that there is a problem with your car, although nothing seems to be wrong. Your car appears to be in perfect working order and is still performing at its peak. So what’s going on?

The check engine light is designed to come on anytime there is an issue. These issues can include everything from electrical system flaws to engine problems to fluid level issues to issues with the car’s emissions system. Even something as easy as forgetting to tighten your gas cap might cause a problem; in fact, this is the most frequent cause of check engine lights in the first place. Simply turn the gas cap until you hear a clicking sound if you believe this is the reason your check engine light is on.

This light can come on without any sort of mechanical problem. Unfortunately, a lot of individuals think that a check engine light is merely a little inconvenience that can be disregarded while their vehicle appears to be in perfect working order. Many people mistakenly believe that turning off a check engine light would make it go away, but doing so simply serves to make the underlying issue worsen over time and increase the likelihood of a serious breakdown that will take a lot of time, money, and effort to repair.

Even if you’ve previously ruled out easy fixes like a loose gas cap, you should still have a mechanic run a diagnostic scan on your car to identify the precise problem that is setting off the check engine light. With the aid of modern on-board diagnostic (OBD-II) systems, it is now simpler for mechanics and vehicle owners to recognize and address issues that result in check engine lights. Not only are these diagnostic scans somewhat speedy, but they are also reasonably priced.

There is no doubt that the presence of a check engine light is not a glitch and should not be ignored. A diagnostic scan performed by one of our ASEA trained specialists could make the difference between seeing a potential issue early on and incurring a costly repair charge afterwards. Make an appointment with one of our skilled technicians at Desert Oasis European Auto Service and Repair right away if you notice the check engine light.

How long can a BMW check engine light be on?

It is still possible to drive your car if the Check Engine light comes on for any reason, but it is only advised to go another 50 to 100 miles before checking your car’s computer for problem codes. You can pinpoint the problem at hand using this technique and deal with it however you see proper.

Depending on the problem that caused the Check Engine light to come on, you could be able to keep driving for a very long time or only a few days. The engine computer has time to reset some sensors after traveling between 50 and 100 miles, which could resolve the issue.

How can I extinguish the engine light?

  • As you drive, let the light turn off on its own. None.
  • Three consecutive times of starting and stopping the engine None.
  • Reconnect the battery after disconnecting it. Wrench.
  • Use a code reader for the OBD

What distinguishes a BMW with a Service engine soon message from one with a check engine light?

The Service Engine light alerts us to impending expected maintenance, which is the simplest way to explain the difference. The Check Engine light, on the other hand, alerts you to an unforeseen issue with your engine or exhaust system.