Skip the auto shop - Our mechanics make house calls

Q: What does the Low Tire Pressure light mean on the dash?

asked by on

What does the Low Tire Pressure light mean on the dash?

Your car is equipped with a Tire Pressure Monitoring system (TPMS) that monitors the air in each tire. When it detects a drop in air pressure, it turns on the Low Tire Pressure warning light on the dash (it looks like a tire with an exclamation mark inside). The light should turn on briefly when you crank the engine, but should turn off shortly afterward.

If the light stays on after you crank the car, or it turns on while you’re driving, it means that you need to physically check the air pressure in all four tires (the system doesn’t tell you which tire is low, only that one is). Add air to the low tire and the light should go off within a few miles of driving. Checking all the tire pressures and correcting them as need would be the best practice.

Tip

If the light turns on and begins flashing, it indicates a problem with the TPMS system or with a wheel sensor. Have the car inspected as soon as possible.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The abs light will not go off

If the ABS warning light has come on, the recommended service is an ABS fault diagnostic. Inasmuch as the warning light is on, if you request that diagnostic, the responding certified mechanic will download the ABS trouble codes that your...

Q: Need to repair my radiator and tires.

The tpms sensor in the tire may be bad. You will need to take it to a technician that has a tpms scan tool to have it checked out. You may want to check the tire pressure in the tires...

Q: VSA problem

Hi there. The VSA light is on indicating that the traction control is active. This will turn on the brake system and try to control the vehicle in the event a tire will slip. The wheel sensor on the left...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...