2018 BMW M4 Tire Pressure Warning Light Stays On

Troubleshooting the Persistent Tire Pressure Warning Light in Your 2018 BMW M4: Causes and Solutions

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Reviewed by
Devin Cabugcal
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 2018 BMW M4 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 2018 BMW M4 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 steps should I take to diagnose the tire pressure warning light issue in my 2018 BMW M4?

To effectively diagnose the tire pressure warning light issue in your 2018 BMW M4, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by manually checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring that the readings align with the recommended levels found in your vehicle's manual. Next, visually inspect each tire for any signs of damage, such as punctures or bulges, which could indicate a loss of pressure. Don’t overlook the valve stems; check them for leaks or any visible damage, as these can also contribute to pressure loss. If the problem persists, utilizing a Tire Pressure Monitoring System (TPMS) tool can help pinpoint the specific tire that may be causing the issue. In some cases, a simple reset of the TPMS may resolve the warning light if it was triggered by a temporary glitch. However, if these steps do not yield results, it is wise to consult a professional mechanic or a BMW service center for a thorough inspection and accurate diagnosis. By following this structured diagnostic approach, you can efficiently identify and address the tire pressure warning light issue in your BMW M4.

What could cause the tire pressure warning light to stay on in a 2018 BMW M4?

When the tire pressure warning light stays on in a 2018 BMW M4, it can be frustrating for DIY car owners. One of the most frequent culprits is low tire pressure, which can occur due to natural air loss, temperature fluctuations, or slow leaks. Before diving deeper, it's essential to check the tire pressure using a reliable gauge to ensure all tires are adequately inflated. If the pressure is fine, the issue may lie with a faulty tire pressure sensor, which can malfunction and fail to provide accurate readings. In such cases, inspecting the sensors for any visible damage or corrosion can be beneficial. Additionally, sensor calibration might be necessary, especially if the tires have been recently changed or rotated. If recalibration doesn’t resolve the issue, consider examining the vehicle's electrical system for any wiring problems that could disrupt communication between the sensors and the dashboard. Lastly, if the car battery has been replaced recently, it may require a reset of the tire pressure monitoring system to clear the warning light. By systematically addressing these potential issues, DIY enthusiasts can effectively troubleshoot and resolve the persistent tire pressure warning light in their BMW M4.

How urgent is it to address the tire pressure warning light on a 2018 BMW M4 that stays on?

Addressing the tire pressure warning light on a 2018 BMW M4 that remains illuminated is an urgent matter that should not be overlooked. Ignoring this warning can lead to serious safety concerns, as improper tire pressure significantly affects the vehicle's handling and braking capabilities, increasing the risk of accidents. Additionally, driving with incorrect tire pressure can cause uneven tire wear, which not only shortens the lifespan of your tires but also raises the likelihood of a blowout while on the road. Furthermore, neglecting this issue can negatively impact your vehicle's fuel efficiency, leading to higher fuel costs over time. The Tire Pressure Monitoring System (TPMS) is designed to alert you to these critical issues, and failing to address the warning light can result in further complications with the system itself. Therefore, it is essential for DIY enthusiasts to take immediate action by checking and adjusting tire pressure to ensure safety, enhance vehicle performance, and prevent costly repairs down the line.

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