How do you fix the tire pressure sensor on a Lexus?
Tire pressure sensors are a crucial component of your Lexus, ensuring that your tires are properly inflated for optimal safety and performance. However, like any part of your vehicle, these sensors can sometimes malfunction. In this guide, we’ll walk you through the steps to diagnose and fix a faulty tire pressure sensor on your Lexus.
Understanding the Tire Pressure Monitoring System (TPMS)
The Tire Pressure Monitoring System (TPMS) in your Lexus is designed to alert you when one or more of your tires are underinflated. This system relies on sensors located in each tire that communicate with your car’s onboard computer. When a sensor fails, you may see a warning light on your dashboard, typically shaped like a horseshoe with an exclamation point inside.
Common Causes of Tire Pressure Sensor Issues
Before diving into the repair process, it’s important to understand what might be causing the issue. Here are some common reasons why a tire pressure sensor might fail:
- Battery Failure: Most TPMS sensors are powered by small batteries that can wear out over time, typically lasting 5-10 years.
- Physical Damage: Hitting a pothole or curb can damage the sensor.
- Corrosion: Exposure to moisture and road salt can corrode the sensor or its components.
- Software Issues: Sometimes, the problem lies in the car’s TPMS software rather than the sensor itself.
Steps to Fix a Tire Pressure Sensor on a Lexus
If you suspect that one of your tire pressure sensors is malfunctioning, follow these steps to address the issue:
Step 1: Check the Tire Pressure
Use a tire pressure gauge to ensure all tires are inflated to the recommended PSI (found in your owner’s manual or on the driver’s side door jamb). Sometimes, the TPMS light comes on simply because a tire is underinflated.
Step 2: Reset the TPMS
After inflating the tires, reset the TPMS system. In most Lexus models, this can be done by pressing and holding the TPMS reset button (usually located under the steering wheel) until the TPMS light blinks three times. Then, drive the car for about 10-15 minutes at speeds above 25 mph to allow the system to recalibrate.
Step 3: Inspect the Sensors
If the light remains on, the issue may be with the sensors themselves. Remove the tire and inspect the sensor for visible damage or corrosion. If the sensor is damaged, it will need to be replaced.
Step 4: Replace the Faulty Sensor
Purchase a compatible TPMS sensor for your Lexus. You can find these at auto parts stores or online. Install the new sensor, ensuring it is properly seated and secured. Note that some sensors may require programming or pairing with your car’s TPMS system, which can be done using a TPMS tool or by visiting a professional mechanic.
Step 5: Rebalance the Tire
After replacing the sensor, the tire will need to be rebalanced to ensure smooth driving. This step is best performed at a tire shop or auto repair center.
When to Seek Professional Help
While some TPMS issues can be resolved at home, others may require professional assistance. If you’re unable to reset the system, or if replacing the sensor doesn’t resolve the issue, it’s time to visit a trusted auto repair shop. At Kevin’s Autos, we specialize in diagnosing and repairing TPMS issues for all makes and models, including Lexus vehicles. Contact us today for expert assistance!
Preventing Future TPMS Issues
To avoid future problems with your tire pressure sensors, follow these tips:
- Check your tire pressure regularly and keep it at the recommended level.
- Avoid driving through deep water or road salt whenever possible to reduce corrosion.
- Have your TPMS inspected during routine maintenance visits.
By staying proactive, you can ensure that your Lexus’s TPMS continues to function properly, keeping you safe on the road.
Frequently Asked Questions
Where is the tire sensor 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 low tire pressure light on but my tire pressure is normal?
A malfunctioning sensor may still send incorrect data to your vehicle's computer, leading to the light staying on even though your tire pressure is optimal. Checking and testing these sensors with specialized equipment at a repair shop can often diagnose whether they are the source of the problem.
Can I reset my tire sensors myself?
Once you have properly inflated your tires, the tire pressure light should automatically go off. However, if it doesn't, there are a few different things that you can try: Drive at or above 50 mph to reset the sensor for 10 minutes. This causes your sensor to reset the next time you turn on your car.
How much does it cost to replace a tire pressure sensor?
In the event TPMS sensors need to be replaced, the cost can range from approximately $50-$100 each depending on vehicle type.
How to reset tire sensor on Lexus?
This method involves:
- Turn off the engine and switch the ignition to the “ON” position without starting the car.
- Locating the TPMS reset button, usually found under the steering wheel or in the glove compartment.
- Press and hold the reset button until the tire pressure light blinks three times, then release it.
Where is the tire pressure sensor reset button located?
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.
Can I fix my own tire pressure sensor?
Replacing Tire Pressure Monitoring System (TPMS) sensors can be done by individuals who are comfortable working with automotive components and have the necessary tools.
Why is my tire pressure light on when my tires are fine in Lexus?
It's possible that the car's Tire Pressure sensor could fail because of its age. If that happens, it needs to be fixed when you see it.
How do you fix the tire pressure on a Lexus?
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. The tire pressure monitor reset button is usually located beneath the steering wheel.
How long do Lexus TPMS sensors last?
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.
