TPMS (Tire Pressure Monitoring System) sensors monitor the air pressure in a vehicle's tires and alert the driver when the pressure drops below a certain level. They are designed to increase road ...

Q: My tire pressure monitor light is constantly on for one or more of the original tires on my 2009 Subaru Impreza with 40,000 miles. We love the car and plan on keeping it as long as possible. My ...

Do tire pressure sensors use individual batteries (that may last only 10 years) rather than the car’s electrical system? Could such a battery replacement cost about $85 for each wheel? What about ...

Mass air flow sensors fail most often in cars but a $20 air filter replacement every 12,000 miles prevents the $250-400 repair bills most drivers face.