2021 Audi Q5 PHEV Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2021 Audi Q5 PHEV

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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 2021 Audi Q5 PHEV 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 2021 Audi Q5 PHEV 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 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 on my 2021 Audi Q5 PHEV?

To effectively diagnose the tire pressure warning light issue on your 2021 Audi Q5 PHEV, begin with a thorough check of the tire pressure in all four tires using a reliable tire pressure gauge. It's crucial to ensure that each tire is inflated to the manufacturer's specified levels, which can typically be found in your owner's manual or on a sticker located inside the driver's door jamb. Next, conduct a visual inspection of the tires for any signs of damage, such as cuts, punctures, or bulges, and look for any foreign objects that may be lodged in the tread. If you find that the tire pressures are correct and the tires appear undamaged, the next step is to reset the tire pressure monitoring system (TPMS), as it may require recalibration after adjustments. Consult your vehicle's manual for specific instructions on how to perform this reset. However, if the warning light remains illuminated despite these efforts, it may indicate a more complex issue, such as a faulty sensor within the TPMS. In such cases, seeking assistance from a qualified mechanic or an authorized Audi service center is advisable for a professional diagnosis and repair. By following this systematic approach, you can efficiently address the tire pressure warning light issue and ensure your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2021 Audi Q5 PHEV?

When the tire pressure warning light stays on in a 2021 Audi Q5 PHEV, it can indicate several underlying issues that DIY enthusiasts can troubleshoot. The most common reason is low tire pressure, so the first step is to check and inflate your tires to the recommended levels. If the pressure is adequate, the problem might stem from a faulty tire pressure sensor, which may need replacement if it’s not functioning correctly. Additionally, sensor calibration issues can prevent accurate readings, requiring a recalibration to resolve the warning light. It's also essential to inspect the tires for any leaks or damage, as these can lead to air loss and trigger the warning. Lastly, consider the possibility of an electrical fault within the tire pressure monitoring system, which may require diagnostic testing to identify. By methodically addressing these potential issues, you can effectively troubleshoot the tire pressure warning light and ensure your vehicle remains safe and performs optimally.

What immediate actions should be taken when the tire pressure warning light remains on in a 2021 Audi Q5 PHEV?

When the tire pressure warning light remains illuminated in your 2021 Audi Q5 PHEV, it is crucial to act promptly to ensure your safety and the vehicle's performance. Ignoring this warning can lead to dangerous driving conditions, including reduced traction and increased tire wear, which may ultimately result in a blowout. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications. If you find any tires underinflated, inflate them immediately to the correct levels, as driving on low-pressure tires can compromise handling and fuel efficiency. Additionally, visually inspect each tire for any signs of damage, such as punctures or bulges, which could necessitate repair or replacement. Once you have addressed any pressure discrepancies or damage, reset the tire pressure monitoring system to clear the warning light. If the light persists despite these efforts, it is essential to consult a certified Audi technician, as ongoing issues may indicate deeper problems with the tire pressure monitoring system or the tires themselves. Taking these steps not only enhances your safety but also helps maintain the longevity and reliability of your vehicle.

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