2013 BMW X3 Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2013 BMW X3: Common Causes and Solutions

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Emissions System
0%
60% chance it's
Something else
The most common reasons a 2013 BMW X3 has a check engine light are an emissions system component, a sensor, or a catalytic converter.
  • Emissions System: A faulty emissions system component, such as an oxygen sensor or EGR valve, can lead to increased emissions and trigger the check engine light.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2013 BMW X3 has a check engine light?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What are the initial diagnostic steps to take for a check engine light on a 2013 BMW X3?

When faced with a check engine light on your 2013 BMW X3, the first step is to check the gas cap, as a loose or improperly sealed cap is a common culprit that can trigger the warning light. Make sure it is tightened securely, and inspect the cap for any signs of wear or dirt that could affect its seal. If the gas cap appears dirty, cleaning it and the surrounding area can sometimes resolve the issue. Next, consider using an OBD-II diagnostic tool to read the trouble codes stored in your vehicle's computer. This tool can provide valuable insights into the specific problem, allowing you to address it more effectively. If these initial steps do not resolve the check engine light, it may be wise to consult a professional for a thorough inspection, as they can diagnose more complex issues that may not be easily identifiable through basic troubleshooting. By following this diagnostic approach, you can efficiently narrow down the potential causes of the check engine light and take appropriate action.

What are the common problems that could cause the check engine light to illuminate in a 2013 BMW X3?

When the check engine light comes on in a 2013 BMW X3, it often signals a range of potential issues that DIYers can investigate. One of the most frequent culprits is electrical problems, which may manifest as engine stalling, difficulty starting, or flickering dashboard lights. These symptoms can indicate a failing battery or alternator, or even a short circuit in the wiring system. Additionally, issues with spark plugs, ignition coils, or spark plug wires can disrupt the engine's combustion process, leading to the light's illumination. Another common cause is a faulty oxygen sensor, which is crucial for maintaining optimal engine performance. To effectively address these problems, it's essential to conduct regular maintenance checks and promptly diagnose any underlying issues, as this not only helps in resolving the check engine light but also ensures the longevity and efficiency of your BMW X3.

How urgent is it to address the check engine light on a 2013 BMW X3?

When it comes to your 2013 BMW X3, the check engine light is not just a minor inconvenience; it serves as a critical alert system for your vehicle's health. If you notice a flashing check engine light, it signifies a serious issue that demands immediate attention to prevent severe engine damage. Even a steady light, while potentially indicating a less urgent problem like a loose gas cap, should not be ignored. Addressing these warnings promptly is essential, as neglecting them can lead to escalating issues that may result in costly repairs and compromised vehicle safety. For DIY enthusiasts, understanding the urgency of these signals is vital; taking the time to diagnose and resolve the underlying problems can save you from more significant headaches down the road. Therefore, if your check engine light illuminates, prioritize investigating the cause to ensure your BMW X3 continues to perform optimally and safely.

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