2019 Audi RS5 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2019 Audi RS5

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Reviewed by
Bo Fader
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 Audi RS5 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 Audi RS5 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 tire pressure warning light issue on my 2019 Audi RS5?

To effectively diagnose the tire pressure warning light issue on your 2019 Audi RS5, begin with a thorough check of the tire pressure across all four tires using a reliable tire pressure gauge. This initial step is crucial as it ensures that each tire is inflated to the recommended levels outlined in your vehicle's manual, which can often resolve the warning light if the pressure is simply low. Next, conduct a visual inspection of the tires for any signs of damage, such as punctures, cuts, or bulges, and look for any foreign objects that could be causing a leak. If the tire pressure is correct and the tires appear undamaged, the next step is to reset the tire pressure monitoring system (TPMS), as sometimes the system may require a reset to clear any false warnings. Refer to your vehicle's manual for specific instructions on how to perform this reset. If the warning light remains illuminated after these steps, it may indicate a more complex issue that requires professional attention, so visiting a mechanic or an authorized Audi service center would be advisable for a comprehensive diagnosis and repair. By following this diagnostic approach, you can systematically address the tire pressure warning light issue and maintain the safety and performance of your Audi RS5.

What could be causing the tire pressure warning light to stay on in a 2019 Audi RS5?

When the tire pressure warning light stays on in a 2019 Audi RS5, it can signal several common issues that DIY enthusiasts can address. The first step is to check the tire pressure in all four tires, as low pressure is the most frequent cause of the warning light. Ensuring that each tire is inflated to the manufacturer's recommended levels can often resolve the issue quickly. If the tire pressure is adequate, consider the possibility of a faulty tire pressure sensor, which may need replacement if it is not functioning correctly. Additionally, sensor calibration issues can occur, and while this may require professional assistance, some DIYers can recalibrate the sensors with the right tools. It's also important to inspect the tires for any visible damage or slow leaks, as these can lead to pressure loss and trigger the warning light. Lastly, be aware that cold weather can cause tire pressure to drop, so regular monitoring during colder months is advisable. By systematically checking these potential problems, you can effectively troubleshoot the tire pressure warning light in your Audi RS5 and ensure safe driving conditions.

How urgent is it to address the tire pressure warning light on a 2019 Audi RS5 that stays on?

Addressing the tire pressure warning light on a 2019 Audi RS5 is of utmost urgency due to the significant safety risks and potential vehicle damage associated with neglecting this warning. When the light remains illuminated, it indicates that the tire pressure may be below the recommended levels, which can severely compromise the vehicle's handling and braking capabilities. This not only increases the likelihood of accidents but also poses a threat to the safety of the driver and passengers. Furthermore, driving on underinflated tires can lead to uneven tire wear, which diminishes the lifespan of the tires and may necessitate costly replacements sooner than expected. Additionally, low tire pressure can adversely affect fuel efficiency, leading to higher fuel costs over time. To ensure optimal performance and safety, it is crucial to check and adjust the tire pressure as soon as the warning light appears. If the issue persists after adjustments, seeking professional assistance is advisable to prevent further complications and ensure the vehicle remains in peak condition.

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