To reset the tire pressure monitoring system (TPMS) on a 2021 Audi A4, follow these detailed steps. These instructions aim to guide you through the process correctly:

 
Understanding the Tire Pressure Monitoring System

• The Tire Pressure Monitoring System in Audi A4 is designed to alert you when it detects a significant drop in tire pressure in one or more tires.
• Resetting the system is usually necessary after inflating tires to the recommended pressure, changing a tire, or rotating the tires.

 
Inflate Your Tires

• Before you reset the TPMS, ensure that all four tires are properly inflated to the recommended pressure levels.
• You can find the recommended tire pressures on the sticker inside the driver's door frame or in the owner's manual.

 
Turn on the Ignition

• Switch on the ignition by pressing the "Start" button without starting the engine. This will ensure that the vehicle's electronic systems are powered up.

 
Access the Car Menu

• Use the infotainment center display to navigate. The controls might be located on the center console or the steering wheel, depending on your vehicle's configuration.
• Press the "Menu" button to access the car's system settings.

 
Navigate to Settings

• Within the menu, locate and select the "CAR" option. This section contains various vehicle settings.
• Find and select "Car Settings" or "Vehicle."

 
Select the Tire Pressure Monitoring System

• Within the vehicle settings, look for the "Tire Pressure Monitoring" option and select it.
• If you do not see it immediately, you may have to look within a sub-menu such as "Service & Checks" or "Monitoring."

 
Reset the System

• Once you have selected the TPMS option, look for a button or option that says "Reset," "Store Tire Pressures," or similar prompt.
• Select this option to initialize the reset process. You may need to confirm the action by selecting "Yes" or "Confirm."

 
Confirmation and Completion

• After you confirm the reset, the TPMS will store your current tire pressures as the baseline.
• You may need to drive the vehicle a short distance for the system to recalibrate. Make sure the tire pressure warning light turns off after a few minutes of driving.

 
If the TPMS Light Stays On

• If the TPMS warning light remains illuminated, you may need to check that the tires are correctly inflated or verify that there are no underlying maintenance issues with the sensors.
• Consult the owner's manual or contact an Audi service center for further assistance if the issue persists.

By following these detailed steps, you can successfully reset the tire pressure monitoring system on your 2021 Audi A4.