2019 BMW 640i XDrive Gran Coupe Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2019 BMW 640i xDrive Gran Coupe: Causes and Solutions

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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 2019 BMW 640i xDrive Gran Coupe 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 2019 BMW 640i xDrive Gran Coupe 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 of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

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 persistent tire pressure warning light on my 2019 BMW 640i xDrive Gran Coupe?

To effectively diagnose the persistent tire pressure warning light on your 2019 BMW 640i xDrive Gran Coupe, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the tire pressure of all four tires, ensuring they 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 or bulges, which could indicate a leak or other issues. 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, as this can sometimes clear false warnings. Additionally, examine the valve stems for any signs of wear or leaks that might be contributing to the problem. If, after these steps, the warning light remains illuminated, it is advisable to consult a certified mechanic or dealership. They possess the specialized tools and expertise necessary to conduct a thorough diagnosis and identify any underlying issues that may not be immediately apparent. By following this structured approach, you can efficiently address the tire pressure warning light and ensure your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2019 BMW 640i xDrive Gran Coupe?

When the tire pressure warning light stays illuminated in a 2019 BMW 640i xDrive Gran Coupe, it often indicates underlying issues that can be addressed through a DIY approach. Start by checking the tire pressure in all four tires, as low pressure is the most common culprit for this warning light. If the pressure is within the recommended range, inspect the tire pressure sensors for any signs of malfunction; a faulty sensor may need to be replaced or recalibrated. Additionally, consider the condition of the sensor batteries, as dead batteries can disrupt communication with the vehicle's system. If the sensors and batteries are functioning properly, examine the wiring for any damage or disconnections that could lead to a system malfunction. Lastly, if the tires have been recently serviced, ensure that the tire pressure monitoring system has been reset to reflect any changes. By methodically addressing these potential issues, you can effectively troubleshoot the persistent tire pressure warning light and ensure your vehicle operates safely and efficiently.

How urgent is it to address the tire pressure warning light on a 2019 BMW 640i xDrive Gran Coupe?

Addressing the tire pressure warning light on a 2019 BMW 640i xDrive Gran Coupe 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 stability, increasing the risk of accidents. Additionally, driving with incorrect tire pressure can result in uneven tire wear, which not only shortens the lifespan of your tires but also diminishes fuel efficiency, leading to higher costs at the pump. The risk of tire damage, including blowouts or flats, escalates when tire pressure is neglected, posing a danger to both the driver and passengers. Furthermore, maintaining the correct tire pressure is essential for optimal vehicle performance, ensuring better traction and cornering capabilities. BMW recommends regular checks and adjustments to tire pressure, making it clear that prompt attention to this warning light is not just advisable but necessary for safe and efficient vehicle operation. Therefore, if you see the tire pressure warning light illuminated, it is crucial to take immediate action to avoid potential risks and ensure a smooth driving experience.

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