2012 Jeep Grand Cherokee Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2012 Jeep Grand Cherokee: Causes and Solutions

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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 2012 Jeep Grand Cherokee 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 2012 Jeep Grand Cherokee 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 in my 2012 Jeep Grand Cherokee?

To effectively diagnose the tire pressure warning light issue in your 2012 Jeep Grand Cherokee, begin with a straightforward approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they are inflated to the levels recommended in your vehicle's manual. This initial step can often resolve the warning light if the pressure is simply low. Next, inspect each tire for visible damage, such as punctures or bulges, which could indicate a more serious problem. If the tires appear to be in good condition, consider resetting the tire pressure monitoring system (TPMS) as outlined in your vehicle's manual, as this can sometimes clear false warnings. Additionally, examine the tire pressure sensors on each wheel to confirm they are functioning correctly. If, after these steps, the warning light remains illuminated, it may be time to consult a mechanic or dealership for a comprehensive diagnosis and repair of the TPMS system. By following this methodical approach, you can efficiently identify and address the issue with your tire pressure warning light.

What could be causing the tire pressure warning light to stay on in a 2012 Jeep Grand Cherokee?

When the tire pressure warning light remains on in your 2012 Jeep Grand Cherokee, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is low tire pressure, which is easily checked with a tire pressure gauge. Ensure all tires are inflated to the manufacturer's recommended levels, as even a slight deficiency can trigger the warning light. If tire pressure is adequate, the problem may lie with a faulty tire pressure sensor, which could require replacement. Additionally, the sensors are equipped with batteries that can deplete over time; if the battery is dead, the sensor will not function correctly, keeping the warning light illuminated. Electrical or wiring issues within the tire pressure monitoring system can also disrupt communication between the sensors and the vehicle's computer, leading to persistent alerts. Lastly, if you've recently changed tires or had maintenance done, the system may need recalibration to provide accurate readings. Addressing these common issues not only enhances your vehicle's safety but also ensures optimal performance, making it essential to investigate the cause of the warning light promptly.

How urgent is it to address the tire pressure warning light on a 2012 Jeep Grand Cherokee that stays on?

Addressing the tire pressure warning light on a 2012 Jeep Grand Cherokee is an urgent matter that should not be overlooked. Ignoring this warning can lead to serious safety concerns, as improper tire pressure significantly affects vehicle handling and braking capabilities, increasing the likelihood of accidents. Additionally, driving on underinflated tires can cause uneven wear, drastically shortening their lifespan and potentially resulting in a dangerous blowout. Beyond safety, there are financial implications to consider; underinflated tires can decrease fuel efficiency, leading to higher fuel costs over time. Furthermore, the Tire Pressure Monitoring System (TPMS) is designed to alert drivers to low tire pressure, and a persistent warning light may indicate a malfunction that requires immediate attention. Therefore, it is crucial to check and maintain proper tire pressure promptly to ensure both safety and efficiency while driving.

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