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: How do you lock or unlock the doors with the electronic key?

Your electronic key lets you lock or unlock your car doors without having to use the key itself or even the remote. All you need is to have the electronic key in your pocket (or somewhere else on your person,...

Q: What does the TPMS light mean?

The tire pressure monitoring system (TPMS) on your Accord does exactly what the name says – it monitors the air pressure in your tires. If the system detects a drop in pressure, it turns on the Low Tire Pressure light...

Q: Appearance of ABS, skiddig and tyre pressure signage 2009 Volkswagon

Hi there - there are couple of problems that can generate the warning lights you describe. If one or more tires has low air pressure, the vehicle can sense slightly different rotational speeds for each wheel - causing these warnings....

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...