2010 Saab 9-5 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2010 Saab 9-5

Find Repair Location
Reviewed by
Andrew Hajjar
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 Saab 9-5 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 Saab 9-5 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 are the initial steps to diagnose a persistent tire pressure warning light on a 2010 Saab 9-5?

To effectively diagnose a persistent tire pressure warning light on your 2010 Saab 9-5, start by checking the tire pressure in all four tires, ensuring they are inflated to the manufacturer's recommended levels. This is a common and simple fix that can often resolve the warning light issue. Next, visually inspect each tire for any signs of damage, such as punctures or bulges, as these can lead to air loss and trigger the warning. Additionally, look for any leaks around the tires and valve stems, which can be confirmed with a tire pressure gauge if necessary. If the pressure and condition of the tires are satisfactory, consider resetting the tire pressure monitoring system (TPMS) according to the vehicle's manual, as this can sometimes clear false warnings. Lastly, inspect the TPMS sensors for any signs of malfunction or damage, as these components are crucial for accurate pressure readings. By following these steps, you can systematically address the warning light issue, and if it persists, seeking professional assistance may be the next best course of action.

What could cause the tire pressure warning light to stay on in a 2010 Saab 9-5?

When the tire pressure warning light stays on in a 2010 Saab 9-5, it is essential to identify the common problems that may be causing this alert. The primary reason is often low tire pressure, which can result from factors such as slow leaks, changes in temperature, or the natural loss of air over time. Another possibility is a faulty tire pressure sensor; if this component is malfunctioning, it may not provide accurate readings, leading to the warning light being triggered unnecessarily. Additionally, the sensor's battery may need replacement, as depleted batteries can disrupt communication between the sensor and the vehicle's system. Lastly, issues with the calibration of the tire pressure monitoring system can also cause the warning light to remain illuminated, indicating that a recalibration may be necessary. It is crucial to address these potential issues promptly to ensure the safety and performance of your vehicle, and seeking a professional mechanic's assistance for a diagnostic check can help accurately identify and resolve the problem.

How urgent is it to address the tire pressure warning light that stays on in a 2010 Saab 9-5?

Addressing the tire pressure warning light in your 2010 Saab 9-5 is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When this warning light remains illuminated, it signals that your tires may be underinflated, which can severely compromise your vehicle's handling and braking capabilities. This increases the likelihood of accidents, putting both you and other road users at risk. Furthermore, driving on improperly inflated tires can lead to uneven wear, significantly shortening their lifespan and potentially resulting in a dangerous blowout while driving. Additionally, underinflated tires can negatively impact your vehicle's fuel efficiency, leading to higher fuel costs over time. Ignoring the tire pressure warning light may also indicate a malfunction in the Tire Pressure Monitoring System (TPMS), which could require professional inspection. Therefore, it is essential to check and adjust your tire pressure promptly, ensuring it aligns with the specifications in your vehicle manual, to maintain safety, extend tire life, and enhance fuel efficiency.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.