2016 Lexus CT200h Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2016 Lexus CT200h: Causes and Solutions

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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 2016 Lexus CT200h 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 2016 Lexus CT200h 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 2016 Lexus CT200h?

To effectively diagnose the tire pressure warning light issue in your 2016 Lexus CT200h, begin with a straightforward approach that prioritizes simpler checks 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. If the pressure is correct, inspect the tires for any visible damage such as punctures or bulges that could indicate a leak. Next, examine the valve stems for any signs of wear or leaks, as these can also contribute to pressure loss. If everything appears normal, utilize a diagnostic tool to scan for fault codes related to the tire pressure monitoring system (TPMS), which can pinpoint specific issues. If you find no faults, consider resetting the TPMS according to your vehicle's manual, as this can sometimes clear the warning light. However, if the light persists after these steps, it may be time to consult a professional mechanic or visit a dealership for a thorough inspection and repair. By following this methodical approach, you can efficiently identify and address the cause of the tire pressure warning light in your Lexus.

What are the common causes for the tire pressure warning light to remain on in a 2016 Lexus CT200h?

When the tire pressure warning light remains on in a 2016 Lexus CT200h, it can be attributed to several common problems that DIYers can investigate. First and foremost, low tire pressure is often the culprit; checking each tire for proper inflation is a straightforward task that can be done with a tire pressure gauge. If the pressure is adequate, the next step is to consider the possibility of a faulty tire pressure sensor. These sensors can malfunction, leading to incorrect readings, so inspecting them for any visible damage or corrosion is advisable. Additionally, the batteries in the tire pressure monitoring system (TPMS) sensors may need replacement after several years of use, which can also trigger the warning light. If the sensors appear functional, recalibrating them might be necessary to ensure they are accurately detecting tire pressure. Lastly, if all else fails, there could be a more complex issue within the TPMS system itself, such as wiring problems or control module failures, which may require professional assistance. By systematically checking these potential issues, you can effectively diagnose and address the reason behind the persistent tire pressure warning light.

What immediate steps should be taken if the tire pressure warning light remains on in a 2016 Lexus CT200h?

When the tire pressure warning light remains illuminated in your 2016 Lexus CT200h, it is crucial to act promptly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle handling, increased tire wear, and even tire blowouts, which pose serious risks on the road. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's recommended levels. If you find any tires are underinflated, inflate them accordingly to restore optimal performance. Additionally, visually inspect each tire for any signs of damage, such as punctures or bulges, as these issues can exacerbate the problem and compromise your safety. Once adjustments are made, reset the tire pressure monitoring system to clear the warning light. If the light persists despite your efforts, it is essential to consult a qualified mechanic, as there may be underlying issues with the monitoring system that require professional attention. Taking these steps not only enhances your vehicle's safety but also prolongs the life of your tires, making it imperative to address the warning light without delay.

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