Why is My Tire Pressure Light Blinking?

Nothing quite gets the heart racing like an unexpected warning light blinking on your car dashboard. One of the most common lights you might see is the tire pressure warning light, a small symbol that looks like a flat tire or an exclamation point enclosed in brackets. This little light is linked to your Tire Pressure Monitoring System (TPMS), and when it starts blinking at you, it’s trying to tell you something important about your tires. But what does it mean? Why is my tire pressure light blinking?

The TPMS is a crucial component of your vehicle, designed with your safety in mind. It keeps an eye on the air pressure inside your tires and alerts you if something isn’t quite right. The system uses sensors in each wheel that send information to your car’s computer. If the pressure falls below a certain level, the TPMS will trigger the warning light on your dashboard.

Solid vs. Flashing TPMS Warning Light

Normally, when you start your car, the tire pressure light will illuminate for a few seconds and then turn off – this is just the system doing a routine check to ensure everything is functioning correctly. However, if the light stays on or starts blinking while you’re driving, it’s an indicator that there could be a problem with your tire pressure.

A solid light typically means your tire pressure is low but not dangerously so. A blinking light, on the other hand, indicates a more serious issue. It could mean rapid pressure loss, a malfunctioning sensor, or even a severe temperature fluctuation affecting your tires. Let’s delve into these potential issues further.

Why is My Tire Pressure Light Blinking?

If you ever noticed your tire pressure light blinking and wondered why, this section delves into the reasons behind this common car issue, aiming to shed light on the potential causes and solutions.

  • Low Tire Pressure:

One of the main reasons your tire pressure light might be blinking is due to low tire pressure. Tires can lose pressure slowly over time or suddenly due to a puncture or damage. Driving with underinflated tires can lead to increased tire wear, decreased fuel efficiency, and poor handling. It’s vital to check your tire pressure regularly and inflate them to the manufacturer’s recommended level.

  • Rapid Pressure Loss:

If your tire pressure light is blinking, it could also indicate a rapid loss of pressure. This can happen if you’ve driven over a sharp object and punctured your tire or if there’s a leak in the valve stem or tire bead. Rapid pressure loss is a serious issue that needs immediate attention, as it can make your vehicle unsafe to drive. It’s crucial to pull over as soon as you can and inspect your tires.

  • Sensor Malfunction:

Sometimes, the issue isn’t with your tires at all, but with the TPMS itself. The system relies on sensors to monitor tire pressure, and like any electronic device, these sensors can malfunction. If the sensor isn’t reading the tire pressure accurately, it could trigger the warning light to blink even if there’s nothing wrong with your tires.

  • Extreme Temperature Variations:

Temperature changes can have a significant impact on your tire pressure. Cold weather can cause the air inside your tires to contract, leading to lower pressure, while hot weather can cause the air to expand, increasing the pressure. If there are extreme temperature fluctuations, it could cause your tire pressure light to blink.

Consequences of Ignoring the Warning Light

Ignoring a blinking tire pressure light can lead to serious consequences. Driving with underinflated tires can cause uneven tire wear, reduce your vehicle’s fuel efficiency, and make it harder to control your car, especially at high speeds or in poor weather conditions. It can also increase the risk of a tire blowout, which is both dangerous and costly.

Importance of Regular Tire Checks

A good practice to adopt is regularly checking your tire pressure, even when the TPMS light isn’t blinking. This can help you maintain optimal tire pressure and identify any potential issues before they become serious problems. You can check your tire pressure at home using a simple tire pressure gauge available at most auto parts stores.

To check your tire pressure, follow these steps:


  1. Purchase a tire pressure gauge if you don’t already have one.
  2. For a precise tire pressure reading, it’s crucial that your tires are cold. Tires reach a ‘cold’ state when your vehicle has been stationary for a minimum of three hours, or if it has been driven less than a mile or 1.6 km at a moderate pace.
  3. Remove the valve cap from one of your tires.
  4. Position the pressure gauge onto the valve stem, applying sufficient pressure until the hissing noise ceases and a reading appears on your gauge.
  5. In the case of a conventional gauge, a tiny bar will emerge from its base, engraved with measurement units. Alternatively, a digital gauge will display the reading on an electronic screen.
  6. Record the given reading and proceed to replicate this method for each of the remaining three tires.
  7. Compare the pressure readings with the recommended pressure indicated in your vehicle’s owner’s manual or on the sticker located on the driver’s side door jamb. If your tire pressure is too high or low, adjust it to the correct pressure.
  8. Replace the valve cap.

Don’t let tire issues slow you down. At HEART Auto Care, we understand how crucial a smooth and safe drive is for you. With our expert team and top-notch services, we’ll ensure your tires are in optimal condition. 

Visit us today or get in touch with our friendly customer service team. Your peace of mind is just a call away!

Wrapping Up: Understanding and Addressing a Blinking Tire Pressure Light

A blinking tire pressure light is not something to ignore. It’s an important warning that something may be wrong with your tires or your TPMS. Whether it’s low tire pressure, a rapid pressure loss, a faulty sensor, or extreme temperature fluctuations, it’s crucial to address the issue promptly to ensure your safety on the road and prolong the life of your tires.

Remember, maintaining your vehicle’s tire health is not just about avoiding the inconvenience of a flat tire or a trip to the mechanic. It’s about ensuring your safety and the safety of other road users. So, next time your tire pressure light starts blinking, don’t ignore it – take action to investigate and resolve the issue. Your car – and your peace of mind – will thank you.