Cadillac CT5 Tire Pressure Warning Light Stays On

Common Causes for the Tire Pressure Warning Light in Your Cadillac CT5 and How to Resolve Them

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Reviewed by
Devin Cabugcal
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 Cadillac CT5 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 Cadillac CT5 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.

Troubleshooting Tire Pressure Warning Light in a Cadillac CT5

When faced with the tire pressure warning light in your Cadillac CT5, the first step is to check the air pressure in all tires, as low pressure is the most frequent culprit. Use a reliable tire pressure gauge to ensure each tire is inflated to the recommended PSI, which can usually be found on a sticker inside the driver’s door. If the pressure is adequate but the light remains illuminated, inspect the tires for any visible damage or punctures that could affect the pressure sensors. Next, consider the possibility of a depleted battery in one of the tire pressure sensors, which may require replacement. If these basic checks do not resolve the issue, it may be necessary to reset the tire pressure monitoring system (TPMS). Depending on your model, this could involve pressing a reset button on the dashboard or using a specialized tool. If the light persists after these steps, it may indicate a malfunctioning TPMS receiver module or a damaged sensor, which would require further diagnostic testing or professional assistance. By following this methodical approach, you can effectively troubleshoot and potentially resolve the tire pressure warning light issue in your Cadillac CT5.

Troubleshooting Tire Pressure Warning Light in a Cadillac CT5

When dealing with the tire pressure warning light in a Cadillac CT5, it's essential to recognize the common problems that may trigger this alert. One frequent issue is simply low tire pressure, which can occur due to temperature changes or slow leaks. Additionally, faulty tire pressure sensors can malfunction, leading to inaccurate readings and the warning light illuminating unnecessarily. If you've recently rotated your tires, the sensors may require recalibration to ensure they accurately reflect the new positions. Another potential problem could be a damaged tire, which not only affects pressure but can also pose safety risks. In some cases, the tire pressure monitoring system (TPMS) may need a reset, especially after maintenance or tire changes. Understanding these common issues can help you diagnose the problem effectively and take the necessary steps to resolve the tire pressure warning light, ensuring your Cadillac CT5 remains safe and roadworthy.

Why is the Tire Pressure Warning Light Staying On in a Cadillac CT5?

When the Tire Pressure Warning Light remains illuminated in your Cadillac CT5, it is crucial to address the issue promptly to avoid serious safety risks and potential damage to your vehicle. Ignoring this warning can lead to driving on under-inflated tires, which not only increases the risk of tire blowouts but can also compromise your vehicle's handling and fuel efficiency. A leaking tire or a malfunctioning tire pressure monitoring system (TPMS) can exacerbate these problems, leading to costly repairs down the line. For DIY enthusiasts, the first step is to check the tire pressure using a reliable gauge and inflate the tires to the manufacturer's recommended levels. If the light persists, inspect the tires for visible damage or leaks, and consider resetting the TPMS if necessary. However, if you suspect sensor issues or if the light continues to flash, it may be time to consult a professional to ensure your safety on the road. Taking these steps not only enhances your driving experience but also prolongs the life of your tires and vehicle.

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