In most cases, when the tire pressure monitoring system (TPMS) light on the dashboard comes on, it indicates that the air pressure in one or more of your tires has fallen below the recommended level.
The light may also be activated incorrectly by a faulty sensor and may turn on and off randomly, apparently because of a sensor malfunction.
These sensors became widespread in the 1990s and later on in a variety of cars, and have been in use since the initial generation of the Chevrolet Silverado 1500.
This sensor works effectively to prevent damage that could be caused by overinflated or underinflated tires; however, the sensor can ultimately wear out or become damaged, resulting in the light remaining on. damaged, resulting in the light remaining on.
If you have a tire pressure monitoring system (TPMS) light, it is essential to note that it is not a substitute for proper tire maintenance.
The tire pressure monitoring system (TPMS) light can be a useful warning before disaster strikes, but there is no substitute for manually checking your tires with a tire pressure gauge and filling them when necessary.
However, in some cases, it may only be necessary to reset the tire pressure system.
Steps To Reset The Service Tire Monitor System
Step 1: Tires may need some air
Tires are in constant use on our cars, and air can leak out over time, resulting in tire deflation.
The tire monitor service light will come on instantly if the tire pressure is below 25 PSI.
Step 2: Reset the TPMS sensors
When you have finished filling your tires with air, deflating them (in case of high PSI), or changing a tire on your vehicle, you should always reset the tire pressure system.
In some cases, the sensors may not be fully synchronized with each other; in these cases, a process is necessary to reset the service light.
Although the method is unconventional, it is necessary to follow it to reset the service indicator light.
- Put your truck in park.
- With the engine off, turn the ignition key to the RUN position.
- This will put the vehicle into reset mode and alert you with two clicks of the horn before the tire pressure monitor service light begins to flash. To reset the truck, turn the headlight switch from ON to OFF four times within three to four seconds.
- Remove all air from the front tire on the driver’s side of the vehicle.
- Deflate the tire for 10 seconds and the truck horn will sound. Wait for the horn to stop sounding and reinflate the tire. The system may have reset, in which case you will have to go through the process again. Each beep indicates that the tire sensor is synchronized with the monitoring system.
- The process must be repeated for each tire.
- When the last tire is inflated, the horn will beep twice, indicating that the procedure is complete.
- It is now time to turn off the vehicle.
- The air compressor should be used to fill each tire to the specified pressure levels.
- Start the vehicle and check the TPMS light.
Step 3: Replace the TPMS sensors
TPMS stands for Tire Pressure Monitoring System. It is a computerized (in most cases) tire inflation valve that measures the air pressure in each tire and transmits that information to the vehicle’s computer.
When a tire’s inflation pressure drops below the level set on the sensor, a warning light comes on to alert the driver that he or she has an underinflated tire or tires.
When changing tires, it is necessary to remove and reinstall the sensors with caution.
Normal corrosion can damage the sensors in certain cases, but an unscrupulous tire technician can also damage them if they are not removed properly.
Follow the steps outlined in this helpful tutorial.
1. Carefully remove the valve core from the TPMS sensor. Allow the valve to deflate.
2. Using the ratchet and socket, pry the TPMS sensor grommet apart and discard it. In some cases, there may be a washer under the grommet to prevent leakage.
3. The TPMS sensor valve should be recessed into the tire rim. By snapping the bead onto the tire changer as you normally would, the sensor will automatically slide toward the bottom of the tire and into the groove.
4. Use a normal tire changer to perform this procedure on both sides of the rim.
5. Place the tire on the tire changer table and secure the tire with adjustable clamps to prevent it from slipping.
6. Remove the wheel from the rim by lifting the top bead of the tire. Remove the TPMS sensor from inside the tire by accessing it from the outside. If you are replacing the wheel, you can remove the lower bead from the rim, but if you are not replacing the wheel, you must replace the upper bead with the lower bead.
7. To properly install the new TPMS sensor, the rubber gasket (which comes with the kit) must be placed on the sensor valve.
8. Place the tire sidewall in front of the valve hole in the rim and maneuver the sensor valve into the hole by pushing it down and then up. Holding the washer (if present) and a grommet in position with one hand, screw it in place with one hand while holding the other hand steady.
9. For recommended pounds per inch to tighten the TPMS sensor grommet, look up the specific vehicle type in the TPMS manual. The torque wrench should be set to the proper pressure, then tighten the grommet according to the manufacturer’s instructions.
10. As you normally would, inflate the tire to the proper pressure.