2020 BMW M240i Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2020 BMW M240i

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Tire Leaking Air
0%
30% chance it's the
Wheel Leaking Air
0%
15% chance it's the
Tire Pressure Monitoring System
0%
15% chance it's
Something else
The most common reasons a 2020 BMW M240i tire pressure warning light stays on are a leaking tire, a wheel that no longer holds air, or a faulty tire pressure monitoring system.
  • Tire Leaking Air: A puncture, valve stem issue, or rim damage can cause a tire to leak air, leading to loss of pressure.
  • Wheel Leaking Air: A puncture or damage to the tire or rim can cause air to leak, resulting in a loss of tire pressure.
  • Tire Pressure Monitoring System: A malfunctioning tire pressure monitoring system can be caused by faulty sensors or a dead battery in the sensor units.
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 2020 BMW M240i tire pressure warning light stays on?

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.

When a tire pressure monitoring sensor fails, the tire pressure monitoring system control module will recognize a loss in communication and turn on the warning lamp which indicates the failure. This is most often the case. However, the tire pressure monitoring sensor may also fail by reporting incorrect tire pressures. This could cause a flat tire to go unrecognized, or a properly inflated tire to signal a low or high tire pressure warning.

When a relearn is needed, for any reason, the TPMS warning light will illuminate, and many vehicles will display a message relating to the TPMS system being inoperative or loosing communication. It is important to keep a watchful eye on tire pressures when this system is having issues because there is no warning available for underinflation or overinflation of the tires.

Wheels offer very few symptoms, but these symptoms should never be ignored. Visible cracks on the wheels may appear, especially after hitting a large bump, Most often, this will also be accompanied by loss of air from the tire on that wheel. Also, vibration in the steering wheel is very common when the tire is out of balance, and improper wheel nuts or bolts can cause creaking and popping noises to develop. Again, there are very few symptoms, but they should not be ignored.

The only symptoms requiring diagnosis for the tire pressure monitoring system warning lamp is if the warning lamp has illuminated while the tires have correct air pressure, or if the air pressure for the tires is out of specification and the warning lamp is off. This is because the overwhelming majority of cases where the TPMS lamp illuminates is due to the change in ambient temperature.

What are the initial steps to diagnose a persistent tire pressure warning light on a 2020 BMW M240i?

To effectively diagnose a persistent tire pressure warning light on your 2020 BMW M240i, start with the most straightforward step: checking the tire pressure. Ensure that all tires are inflated to the manufacturer's recommended levels, as low pressure is a frequent culprit for triggering the warning light. Next, visually inspect each tire for any signs of damage, such as punctures, cuts, or bulges, which could indicate a leak or other issues affecting pressure. If the tires appear to be in good condition, proceed to reset the tire pressure monitoring system following the instructions in your vehicle's manual; this can sometimes resolve the warning light if it was triggered erroneously. Additionally, examine the tire pressure monitoring sensors for any signs of malfunction or damage, as faulty sensors can also lead to persistent warnings. If, after completing these steps, the warning light remains illuminated, it may be time to consult a professional mechanic or a BMW service center for a thorough inspection and diagnosis. By following this structured approach, you can efficiently troubleshoot the issue and determine whether a simple fix or professional assistance is required.

What could cause the tire pressure warning light to stay on in a 2020 BMW M240i?

When the tire pressure warning light remains illuminated in your 2020 BMW M240i, it can be a source of concern, but understanding the common problems can help you troubleshoot effectively. The most frequent culprit is low tire pressure, which can easily be checked using a tire pressure gauge. Ensure that all tires are inflated to the manufacturer's recommended levels, as even a slight drop can trigger the warning light. If the pressure is adequate, consider the possibility of a faulty tire pressure sensor. These sensors can malfunction over time, necessitating replacement or recalibration. Additionally, the sensors are powered by batteries that may deplete, leading to persistent warning lights. Inspecting the wiring and connections to the tire pressure monitoring system is also crucial, as damaged or loose connections can disrupt the system's functionality. Lastly, if you've recently changed tires or had maintenance done, the system may require recalibration to provide accurate readings. Addressing these issues promptly not only ensures your safety but also maintains the performance of your vehicle. If the warning light persists after these checks, seeking assistance from a professional mechanic or a BMW service center is advisable for a thorough diagnosis.

What immediate steps should be taken to address the tire pressure warning light on a 2020 BMW M240i?

When the tire pressure warning light illuminates on your 2020 BMW M240i, it is crucial to act promptly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle handling, increased tire wear, and even tire blowouts, which pose serious risks on the road. Start by checking the tire pressure of all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications found in the owner's manual or on the door jamb. If you discover any tires are underinflated, inflate them to the correct levels using an air compressor. Additionally, inspect each tire for visible damage, such as punctures or bulges, as these issues can compromise your safety and require immediate attention. Once you have adjusted the tire pressure and addressed any damage, resetting the Tire Pressure Monitoring System (TPMS) is essential to clear the warning light. This process is typically straightforward and outlined in your owner's manual. By taking these steps without delay, you not only enhance your driving safety but also prolong the life of your tires and vehicle.

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