Q: Tire Pressure Mgmt System light on - how to keep it off? Ford

asked by on

the tmps light on my truck keeps coming on usually after it got cold . . . tire never looks low, and i can drive months with light on, but not lose anymore air from the tire . . it takes constant servicing to keep the tires over 35 lbs to turn the light off. why is this? is the sensor bad? or the computer on the truck malfunctioning?

My car has 40000 miles.
My car has an automatic transmission.

Hello - most likely this is not a malfunction of the TPMS sensors or any other vehicle system. This is caused by the drops in temperature - which decreases the pressure in the tires; just as tire pressures increase while driving. Tire pressure can decrease enough to trigger the TPMS sensors during a change in season, or after a cold front rolls through. This is by design, in order to prevent excessive tire wear at the edges of the tire due to underinflation. The only solution, and the desired solution, is to add air to tires as temperatures drop, and let air out in the spring when temperatures rise. If tire pressures are all at the specified temperature, have the TPMS system examined by a reputable tire dealer in your area. The tires must be removed for this check. Unfortunately, this is not a service YourMechanic can offer. Thanks for thinking of us!

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Tire Pressure Mgmt System light on - how to keep it off? Ford

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: TPMS alarm went off, as well as all gauge lights

Hello. Since your car is relatively new, it should still be under warranty. It is apparent to me that there is an electrical issue that is tied into all these systems. Unfortunately, under warranty technicians only get paid three tenths...

Q: Reduced engine power, tire pressure symbol, and AC noises

Hello. From what you describe it would appear that your vehicle may be experiencing more than one issue. The exclamation mark and tire symbol come on when the vehicle's tire pressure monitoring system is set off. This occurs when the...

Q: What does it mean if the Tire Pressure Monitoring System indicator comes on in the dash?

Your car is equipped with a pretty advanced system designed to monitor the amount of air in your tires (the tire pressure monitoring system, or TPMS). The light will come on for a number of different reasons. Here’s what you...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.