2022 BMW 745e XDrive Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2022 BMW 745e xDrive: 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 2022 BMW 745e xDrive 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 2022 BMW 745e xDrive 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 2022 BMW 745e xDrive?

To effectively diagnose the tire pressure warning light issue in your 2022 BMW 745e xDrive, start by manually checking the tire pressure using a reliable tire pressure gauge. This initial step is crucial as it allows you to compare the readings against the recommended levels specified in your owner's manual. If the pressure is low, inflate the tires accordingly. Next, conduct a visual inspection of each tire for any signs of damage, such as punctures or bulges, which could indicate a leak or other issues. If the tire pressure appears normal and there are no visible damages, proceed to reset the Tire Pressure Monitoring System (TPMS) as outlined in your manual; this can often resolve minor glitches. Should the warning light persist after these steps, it may be time to consult a professional mechanic or a BMW dealership, as they possess the specialized tools necessary for a thorough diagnosis. In some cases, the problem may stem from faulty tire pressure monitoring sensors, which a mechanic can identify and replace if needed. By following this structured approach, you can efficiently troubleshoot the tire pressure warning light and ensure your vehicle remains safe and roadworthy.

What could be causing the tire pressure warning light to remain on in a 2022 BMW 745e xDrive?

When the tire pressure warning light remains on in a 2022 BMW 745e xDrive, it can indicate several common issues that DIY enthusiasts can troubleshoot. The most frequent cause is low tire pressure, so the first step is to check and inflate your tires to the recommended levels. If the pressure is adequate, consider the possibility of a faulty tire pressure sensor, which may need replacement if it’s malfunctioning. Additionally, sensor calibration issues can occur, requiring a recalibration to ensure accurate readings. Electrical faults within the tire pressure monitoring system can also lead to a persistent warning light; while diagnosing these may require specialized tools, having a basic understanding of your vehicle's electrical system can be helpful. Inspecting your tires for any signs of damage or slow leaks is crucial, as these can contribute to low pressure and trigger the warning light. Lastly, be aware that extreme temperature changes, especially in colder weather, can affect tire pressure. By systematically addressing these potential issues, you can effectively troubleshoot the warning light and ensure the safety and performance of your BMW.

How urgent is it to address the tire pressure warning light on my 2022 BMW 745e xDrive?

Addressing the tire pressure warning light on your 2022 BMW 745e xDrive is not just a matter of convenience; it is a critical safety issue that demands immediate attention. Ignoring this warning can lead to compromised vehicle handling and stability, particularly in emergency situations or challenging driving conditions, which could put you and others at risk. Additionally, driving on improperly inflated tires can accelerate uneven wear, significantly shortening their lifespan and increasing the likelihood of a tire failure. This not only poses a safety hazard but can also lead to costly replacements. Furthermore, maintaining the correct tire pressure is essential for optimal fuel efficiency; under-inflated tires can decrease your vehicle's mileage, resulting in higher fuel costs over time. Therefore, it is imperative to regularly check your tire pressure and address any discrepancies as soon as the warning light illuminates, ensuring your BMW 745e xDrive operates safely and efficiently.

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