TPMS Light Flashing? Fix Your 2020 Supra Now!
The thrill of driving your 2020 Toyota Supra is undeniable. But that exhilarating experience can quickly sour if your TPMS (Tire Pressure Monitoring System) light starts flashing. A flashing TPMS light isn't just an annoying inconvenience; it's a serious warning sign indicating a potential safety hazard. This comprehensive guide will walk you through understanding why your 2020 Supra's TPMS light is flashing, how to diagnose the problem, and the steps to take to fix it – getting you back on the road safely and swiftly.
Understanding Your 2020 Supra's TPMS System
Before diving into troubleshooting, let's briefly understand how the TPMS in your 2020 Supra works. The system uses sensors embedded in each wheel to constantly monitor tire pressure. If the pressure drops below a pre-set threshold, the system alerts you via the TPMS warning light on your dashboard. A steady light usually indicates low tire pressure in one or more tires. However, a flashing light signals a more critical issue, often related to the TPMS sensors themselves or a malfunction in the system.
Why is My 2020 Supra's TPMS Light Flashing?
A flashing TPMS light on your 2020 Supra typically signifies a problem with the TPMS sensors or the system's communication. Here are some common culprits:
1. Sensor Malfunction:
This is the most frequent cause of a flashing TPMS light. A sensor might be faulty, damaged (e.g., from a pothole impact), or its battery might be dead. Sensors have a limited lifespan and eventually need replacement.
2. System Communication Error:
The TPMS sensors communicate wirelessly with the car's computer. If this communication is interrupted – due to a faulty receiver, wiring issues, or even rare electronic interference – the light will flash.
3. Low Tire Pressure (Severe):
While a steady light usually indicates low tire pressure, extremely low pressure in one or more tires can trigger a flashing light as a more urgent warning.
4. Incorrect Tire Size or Type:
Using incorrect tires (wrong size, type, or incorrect inflation pressure) can interfere with the TPMS system's calibration and trigger a flashing light. This can happen after a tire change.
Troubleshooting Your Flashing TPMS Light
Let's tackle how to troubleshoot and potentially resolve this issue.
1. Check Tire Pressure:
The first step is always to check your tire pressure using a reliable gauge. Ensure each tire is inflated to the manufacturer's recommended pressure (found in your owner's manual or on a sticker usually located on the driver's side doorjamb). If any tire is significantly underinflated, inflate it to the correct pressure. If the light remains flashing after properly inflating tires, proceed to the next steps.
2. Inspect Tires and Wheels for Damage:
Carefully examine your tires and wheels for any signs of damage. Look for punctures, cracks, or other visible problems that could affect the TPMS sensors. A damaged sensor might need replacement.
3. Reset the TPMS System (If Applicable):
Some 2020 Supras allow for a TPMS reset through the car's infotainment system. Consult your owner's manual for the specific procedure. This may resolve a minor communication error. Note that this won't fix a faulty sensor.
4. Consult a Professional:
If the flashing TPMS light persists after these steps, it's time to seek professional help. A qualified mechanic can diagnose the problem accurately using specialized diagnostic tools to determine if a sensor needs replacing, there's a wiring issue, or another component requires attention. They can also help with relearning or recalibrating your TPMS system after tire changes or repairs.
How Much Will it Cost to Fix?
The cost to fix a flashing TPMS light varies greatly depending on the cause. Replacing a single sensor can cost anywhere from $100 to $300, while more extensive repairs, such as fixing wiring issues, could be more expensive.
Preventing Future TPMS Issues
Regular tire pressure checks are vital to preventing TPMS problems and ensuring your safety. Check your tire pressure at least once a month, or before long trips. Also, consider regularly rotating your tires to ensure even wear and tear.
By following these steps and understanding your 2020 Supra's TPMS system, you can quickly address a flashing TPMS light, restore your driving confidence, and keep yourself safe on the road. Remember, a flashing light indicates a potential safety hazard, so don't ignore it!
