Skip the auto shop - Our mechanics make house calls

Q: Why might the Low Tire Pressure light come on in the dash?

asked by on

Why might the Low Tire Pressure light come on in the dash?

A: Your car’s tire pressure monitoring system ...

Your car’s tire pressure monitoring system (TPMS) is designed to alert you when a tire’s pressure drops below a specific threshold. However, it might not mean that you have a flat. Here are a few things you need to know about the TPMS system and the Low Tire Pressure light:

  • Your tires lose air naturally over time. If it’s been some time since you checked and adjusted the air in your tires, one or more could be low due to natural causes, making the light turn on.

  • The Low Tire Pressure light will turn on if you have a flat tire and install the spare (even though the spare has a tire pressure sensor). It will turn off when you replace the regular wheel and sensor.

  • The Low Tire Pressure light may not come on if you’re using tires without sensors, if the sensors aren’t registered with the system, if the tires are inflated to 73 PSI or if there is interference from strong nearby radio signal sources. Snow and ice accumulations on the wheel will also affect the signal and may disable the TPMS system.

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: Battery terminal corroded

If the battery cable end has considerable white debris on it, then I would replace the entire cable, otherwise the problem will come back. Use a battery post cleaner to make optimal contact surfaces for the cable ends. Also, consider...

Q: Suspension is "loose"

The term "suspension is loose" is most likely the mechanics way of saying that you have worn components in the front end that would cause the alignment to not be able to be set to specifications. He might of seen...

Q: Where is the tpms ecu module located so I can replace?

Hello, thank you for writing in. The TPMS module is located behind the left front wheel well. Beyond the wheel well you will need to locate the first body frame mount, and the module should be fastened to it or...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...