When your car is new, the tire pressure monitor system is reset to its factory settings. This process will enable you to reset the tire pressure indicator light and optimize your fuel economy. The later cars have a built-in system that calculates the psi for each tire when driving and then reports it back through the OBD II port.

There are two ways to reset the tire pressure monitor system. One is by using a tire pressure gauge and pressing the RESET button; another is through a diagnostic or service port.

When you are resetting your tire pressure monitor system using a tire pressure gauge, follow the steps below:

1. Get a tire pressure gauge that can read up to 99 psi (6.3 bar).

2. Find the valve stem on each tire; it is the only part of the tire that moves when deflating or inflating. They are usually black and made of rubber or plastic material, about one inch long.

3. Remove dust cap from the tire pressure monitor system valve stem.

4. Attach tire pressure gauge to the valve stem until firmly locked; you will hear a hissing sound when the handle is released – this means that pressure is escaping from the tire, which you are checking.

5. Read the psi value on the gauge’s face.

If your car has passenger tires with a psi of 30/32, this means that your tire is properly pressurized.

6. Remove the pressure gauge from the tire’s valve stem and screw the dust cap back on after reading the psi value – you have just reset the tire pressure indicator light on your car dashboard.

If you want to check all tires, follow steps 1-5 for each tire.

Where is the tire pressure monitor reset button?

To reset the tire pressure indicator light on your car, refer to your auto manual or owner’s manual for detailed instructions. It is also a good idea to check the operation of all warning lights after you have completed this process, especially that most new vehicles have a warning light test function in the engine compartment. You can press the RESET button on some cars, while for others, you may need to consult the car manual and perform more complex reset procedures such as disconnecting the battery or unscrewing the fuse.

Why is my tire pressure light on, but my tires are fine?

You can also check your tire pressure monitor system through a diagnostic or service port. The procedure is outlined below:

1. Turn on the ignition but don’t start the engine.

2. Locate the Data Link Connector (DLC).

It is usually under the driver’s or passenger’s side of the dashboard near the fusebox; it is small in size with a gray metal cover and has four wires with alligator clips attached.

3. Attach one end of the jumper wire (from bulb tester) to battery negative, then attach the other end of the jumper wire (read positive) to the car’s metal part; this will turn DLC on for about 5-10 seconds.

4. Scan the vehicle using the code scanner or diagnostic device.

5. Look at the OBD II monitor screen on the scan tool, go to vehicle systems and look for Tire Pressure Monitor.

6. Press the READ button or RESET button until the tire pressure monitor system is clear of any warning lights.

7. Turn car ignition off after clearing OBD II screen for tire pressure monitor system.

8. Disconnect jumper wire from the battery negative first, then from the metal part of the car.

9. Relatch the gray metal cover back on DLC after you are done with jump-starting your tire pressure monitor system through the diagnostic port.

How long does it take for the tire pressure light to go away?

To properly maintain your vehicle, it is essential to check your tire pressure regularly using a reliable tire gauge which you can buy at any auto parts store. Keep in mind that the psi for your vehicle’s tire is displayed on the driver’s door jam and found in the owner’s manual.

Ensure that you check tire pressure, especially if you just had a flat tire or after driving long distances because running your car on under-inflated tires can damage them and cause serious accidents.

Follow these simple steps to reset the tire pressure light on your car.

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