Why is my tire pressure light on when my tires are fine Lexus?
If your Lexus's tire pressure warning light is illuminated, it may not necessarily mean there is an issue with your tires. The tire pressure monitoring system (TPMS) in your vehicle is designed to alert you when the air pressure in one or more of your tires drops below a certain threshold, even if the tires appear to be in good condition.
Common Reasons for the Tire Pressure Light
- Low Tire Pressure: The most common reason for the tire pressure light to come on is that the air pressure in one or more of your tires has dropped below the recommended level. This can happen due to a slow leak, changes in temperature, or simply from normal air loss over time.
- TPMS Sensor Malfunction: The tire pressure monitoring system in your Lexus relies on sensors in each wheel to detect the air pressure. If one of these sensors is malfunctioning, it can trigger the warning light, even if the tires are properly inflated.
- Tire Replacement or Rotation: After replacing a tire or rotating the tires, the TPMS system may need to be reset or recalibrated. If this is not done, the warning light may remain illuminated.
- Extreme Temperature Changes: Sudden changes in temperature can cause the air pressure in your tires to fluctuate, which may trigger the TPMS light. This is especially common during seasonal changes.
If the tire pressure light is on and your tires appear to be properly inflated, it's a good idea to have your Lexus inspected by a qualified technician to determine the underlying cause and resolve the issue.
Checking and Resetting the TPMS
To check the tire pressure in your Lexus and reset the TPMS system, follow these steps:
- Use a tire pressure gauge to check the air pressure in each of your tires, including the spare. Ensure they are inflated to the recommended pressure, which can be found in your owner's manual or on the driver's side door jamb sticker.li>
- If the tires are properly inflated, the TPMS system may need to be reset. Consult your owner's manual for the specific reset procedure for your Lexus model. This typically involves pressing a reset button or using a diagnostic tool.
- After resetting the TPMS, drive your Lexus for a short distance, then check the warning light. If it remains illuminated, there may be a more serious issue that requires further diagnosis and repair.
By understanding the common causes of the tire pressure warning light and following the proper steps to check and reset the TPMS, you can help ensure your Lexus is operating safely and efficiently.
Is it OK to drive with tire pressure light on?
This is why you should maintain proper inflation pressure and try to avoid driving when the TPMS light is on. If you absolutely must drive a short distance on a tire with severely low pressure, drive very slowly and use extreme caution. The tire should be inflated or changed before driving anywhere.
Why is my tire pressure light still on after filling tires on my Toyota?
After properly inflating your tires, the tire pressure light should automatically turn off. However, if the TPMS light remains on, there are a few things you can do: Drive at or above 50 mph for 10 minutes to reset the sensor. This can cause your sensor to reset when you turn on your vehicle.
Where is my TPMS reset button?
Set the parking brake. Look for a button to the left of the steering column labeled with the TPMS icon if it's there push and hold it until the TPMS indicator in the instrument panel blinks twice.
Why is my tire pressure light still on after filling tires in Lexus?
If you've added air but the air pressure warning light stays on, there's a problem with your Tire Pressure Monitoring System or you have a slow leak... Quick Tip: If the TPMS warning light comes back on after you've filled the tire with air, recheck the tire to make sure it is inflated to the proper air pressure.
Why is my tire pressure light on but my tire pressure is fine?
TPMS malfunction: If the TPMS itself is malfunctioning, the light may come on even if your tire pressure is normal. If you see the tire pressure light and your tires seem properly inflated, it's a good idea to have the TPMS checked by a mechanic.
How long do Lexus tire pressure sensors last?
5-10 years
Most TPMS sensors run on batteries that are built into the sensor and these batteries are not replaceable. The life expectancy of the lithium ion batteries in a TPMS sensor is anywhere from 5-10 years.
Can a tire pressure light be false?
False Light: Sometimes, the TPMS sensor itself is acting up. It might be sending false warnings or incorrect pressure readings. Low Battery: Some TPMS sensors have their own batteries that need replacing every few years. If they've fizzled out, the system can go haywire.
How do you fix the tire pressure sensor on a Lexus?
With the vehicle off, turn the key to the “On” position, but don't start the car. Hold the TPMS reset button until the tire pressure light blinks three times, then release it. Start the car and wait 20 minutes for the sensor to refresh.
How do I know if my tire pressure sensor is messed up?
Sensor Malfunctions: If your tire pressure is within the recommended range, but the sensor triggers a warning light, it may be malfunctioning. Handling Differences: Should you notice handling changes like swerving or flat tires without a TPMS alert, the sensor might be failing to detect these crucial pressure drops.
How to find out which tire sensor is bad?
Measure the air pressure of each tire and record them. Then, compare the data with the one displayed in your car display panel. If the reading in one tire is different from the one displayed, it might mean that there's a problem with the TPMS sensor in that tire.
