2022 BMW 840i Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2022 BMW 840i: 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 2022 BMW 840i 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 840i 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 840i?

To effectively diagnose the tire pressure warning light issue in your 2022 BMW 840i, start with a manual check of 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 found in your owner's manual or on the sticker located inside the driver's side door jamb. Next, visually inspect each tire for any signs of damage, such as punctures, cuts, or bulges, which could indicate a loss of pressure. Don’t overlook the valve stems; check them for any signs of wear or leaks, as faulty valve stems can lead to air escaping from the tires. If you find that the tire pressure is indeed low, use a tire inflator to bring the tires back to the recommended levels. After adjusting the pressure, it may be necessary to reset the Tire Pressure Monitoring System (TPMS) to clear the warning light, so refer to your owner's manual for the specific reset procedure. If the warning light remains illuminated despite these efforts, it’s advisable to consult a certified mechanic or a BMW dealership for a more thorough diagnosis and repair. By following this structured approach, you can efficiently address the tire pressure warning light issue and ensure your vehicle's safety and performance.

What could cause the tire pressure warning light to stay on in a 2022 BMW 840i?

When the tire pressure warning light stays on in your 2022 BMW 840i, it’s important to identify the underlying issues that may be causing this alert. The most prevalent reason is low tire pressure, which can result from natural air loss or punctures; therefore, regularly checking and inflating your tires to the recommended levels is vital for both safety and vehicle performance. Another common issue could be a faulty tire pressure sensor, which may require replacement or recalibration to function correctly. Additionally, some sensors are equipped with batteries that can deplete over time, leading to communication failures with the vehicle's system and keeping the warning light illuminated. Wiring problems or malfunctions within the tire pressure monitoring system can also trigger this warning, often necessitating a diagnostic test to accurately identify the issue. Lastly, be aware that extreme temperature changes can impact tire pressure readings, potentially resulting in false warnings. By understanding these common problems, you can take proactive steps to troubleshoot and resolve the tire pressure warning light issue in your BMW.

What immediate steps should be taken if the tire pressure warning light remains on in a 2022 BMW 840i?

When the tire pressure warning light remains illuminated in your 2022 BMW 840i, it is crucial to act swiftly to avoid serious safety risks and potential damage to your vehicle. Ignoring this warning can lead to compromised handling, increased tire wear, and even blowouts, which can endanger both you and other road users. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications found in your owner's manual or on the door jamb. If you discover any discrepancies, promptly inflate or deflate the tires to the correct levels, as maintaining proper tire pressure is essential for safe driving and optimal performance. Next, visually inspect each tire for any signs of damage, such as cuts or punctures, which could necessitate a replacement. After addressing any pressure issues, reset the Tire Pressure Monitoring System (TPMS) according to your vehicle's manual to ensure accurate readings moving forward. If the warning light persists despite these efforts, it is imperative to consult a qualified mechanic or BMW service center, as there may be deeper issues with the TPMS or the tires that require professional intervention. Taking these immediate steps not only enhances your safety but also prolongs the life of your tires and vehicle.

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2022 BMW 840i Tire Pressure Warning Light Troubleshooting