2018 Dodge Grand Caravan Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2018 Dodge Grand Caravan

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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 2018 Dodge Grand Caravan 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 2018 Dodge Grand Caravan 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.

What are the initial steps to diagnose a tire pressure warning light that stays on in a 2018 Dodge Grand Caravan?

When faced with a tire pressure warning light that remains illuminated in your 2018 Dodge Grand Caravan, the first step is to manually check the tire pressure in all tires, including the spare. Using a reliable tire pressure gauge, ensure that each tire is inflated to the manufacturer's recommended PSI levels, as incorrect pressure can trigger the warning light. Next, visually inspect each tire for any signs of damage such as punctures, cuts, or bulges, as these can also affect tire pressure. If the tires appear to be in good condition, consider resetting the tire pressure monitoring system (TPMS) according to the instructions in your vehicle's manual, as this can sometimes clear false alerts. Additionally, examine the valve stems for any leaks or damage, as compromised valve stems can lead to air loss. If, after these steps, the warning light persists, it may be time to consult a mechanic or dealership for a more detailed diagnosis, as they have the tools necessary to identify more complex issues within the TPMS. By following this methodical approach, you can effectively troubleshoot the tire pressure warning light and ensure your vehicle's safety on the road.

What could be causing the tire pressure warning light to remain on in a 2018 Dodge Grand Caravan?

When the tire pressure warning light stays on in a 2018 Dodge Grand Caravan, it can signal several underlying issues that DIYers can address. The most frequent cause is low tire pressure, which can be easily checked with a tire pressure gauge and adjusted to the recommended levels. If the pressure is correct but the light remains illuminated, the tire pressure sensor may be malfunctioning and could need replacement. Another possibility is that the sensor's battery has died, which is a common issue as these batteries have a limited lifespan. In some instances, the tire pressure monitoring system (TPMS) may require recalibration to ensure it functions correctly. Additionally, it's important to inspect the electrical connections and wiring associated with the TPMS for any signs of damage, as these can also lead to persistent warning lights. By methodically investigating these areas, you can effectively troubleshoot and resolve the tire pressure warning light issue on your own.

What should I do if the tire pressure warning light on my 2018 Dodge Grand Caravan stays on?

If the tire pressure warning light on your 2018 Dodge Grand Caravan stays illuminated, it is essential to act quickly to avoid potential safety hazards. Neglecting this warning can lead to serious issues such as tire blowouts or compromised vehicle handling, significantly increasing the risk of accidents. Begin by checking the tire pressure in all four tires, including the spare, ensuring they are inflated to the levels specified in your owner's manual. If you discover any underinflated tires, inflate them to the correct pressure. Additionally, carefully inspect each tire for any signs of damage, such as punctures or cuts, which could affect their performance. Once you have adjusted the tire pressure, you may need to reset the tire pressure monitoring system (TPMS) to turn off the warning light; this process is usually outlined in your manual. If the warning light remains on after these steps, it is crucial to seek assistance from a qualified mechanic, as there may be an underlying issue with the TPMS that requires professional diagnosis and repair. By addressing the tire pressure warning light promptly, you not only enhance your vehicle's performance but also ensure the safety of yourself and your passengers on the road.

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