2010 Audi S5 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2010 Audi S5: Causes and Solutions

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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 2010 Audi S5 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 2010 Audi S5 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 2010 Audi S5?

To effectively diagnose the tire pressure warning light issue on your 2010 Audi S5, begin with a thorough assessment of the tire pressure in all four tires. Utilize a reliable tire pressure gauge to ensure that each tire is inflated to the manufacturer's specified levels, which can typically be found in the owner's manual or on a label located inside the driver's door jamb. Following this, conduct a visual inspection of each tire for any signs of damage, such as punctures, cuts, or bulges, as these can lead to pressure loss and trigger the warning light. Additionally, check for potential leaks by examining the tires and valve stems closely; a simple mixture of soap and water can help reveal leaks, as bubbles will form where air escapes. If you have corrected the tire pressure but the warning light remains illuminated, consult your owner's manual for instructions on resetting the tire pressure monitoring system (TPMS). Should the issue persist despite these efforts, it may be necessary to seek assistance from a qualified mechanic or an Audi dealership for a comprehensive diagnosis. By following this diagnostic approach, you can systematically 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 2010 Audi S5?

When the tire pressure warning light stays on in a 2010 Audi S5, it can be a source of concern for any DIY enthusiast. The first step is to check for low tire pressure, which is the most common reason for the warning light to illuminate. Ensuring that all tires are inflated to the recommended levels can often resolve the issue quickly. If the tire pressure is adequate, the next potential problem could be a faulty tire pressure sensor, which may not be accurately detecting the pressure and could require replacement. Additionally, sensor calibration issues might arise, necessitating a reset to ensure the sensors are functioning correctly. Electrical problems within the tire pressure monitoring system can also cause the warning light to remain on, and these may require diagnostic testing to identify the specific fault. Lastly, a malfunctioning control module could be responsible for the persistent warning light, which may need professional attention. By understanding these common issues, you can effectively troubleshoot the problem, but if your DIY efforts do not resolve the warning light, seeking help from a qualified mechanic is recommended to ensure your vehicle's safety and performance.

How urgent is it to address the tire pressure warning light that stays on in a 2010 Audi S5?

Addressing the tire pressure warning light that remains illuminated in your 2010 Audi S5 is of utmost importance due to the immediate safety concerns it presents. Low tire pressure can severely compromise your vehicle's handling and braking capabilities, increasing the likelihood of accidents, particularly in critical driving situations. Furthermore, driving on underinflated tires can lead to uneven wear, necessitating costly premature tire replacements. This not only affects your vehicle's performance but also diminishes fuel efficiency, resulting in higher fuel costs over time. Therefore, it is crucial to check and adjust your tire pressure as soon as the warning light activates. If the light persists after adjustments, seeking professional assistance is advisable to prevent further complications. Ignoring this warning can lead to significant safety risks and financial burdens, making prompt action essential for both your safety and the longevity of your vehicle.

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