The 2018 Audi A4 displays tire pressures through its Tire Pressure Monitoring System (TPMS) either on the digital instrument cluster (including the Virtual Cockpit) or via the MMI infotainment system. A warning light will alert you if any tire is underinflated. The exact display paths can vary by trim, so this guide covers both common methods and where to find the official pressure values.
Read tire pressures on the instrument cluster
On many A4s with a digital instrument cluster, you can view each tire’s current pressure in the Tire Pressure screen. This method provides a quick, at-a-glance readout without navigating away from your driving display.
- Turn the ignition to ON or start the engine to wake the cluster.
- Use the steering wheel controls (Menu/View/OK) to cycle to the Tire Pressure screen, or access it from the Vehicle/Car status menu if required.
- Read the four readings shown for Front-Left, Front-Right, Rear-Left, and Rear-Right tires.
- If a tire reads low, inflate to the recommended cold pressure shown on the door jamb placard, then recheck after a short drive.
If your A4 has the Virtual Cockpit, the tire pressures may appear as a dedicated Tire Pressure screen or within a Vehicle Status page.
View tire pressures through the MMI infotainment system
Some configurations expose TPMS data via the MMI Car status sections. This path is handy if you prefer using the touchscreen or don’t want to toggle the instrument cluster.
- Press the MMI control to access the main menu and select Car or Vehicle Status.
- Navigate to Tire Pressure or TPMS to display the per-tire pressures.
- Review each tire’s current reading and compare with the door placard’s recommended values.
- After inflating any tire, drive a few miles to allow the TPMS to re-calibrate if needed.
These steps provide a screen-based readout of each tire’s current pressure and can simplify checks before long trips or when monitoring multiple vehicles.
What to do if the TPMS warns you
In addition to the on-screen readouts, you can verify inflation with a handheld gauge and consult the door-jamb placard for the recommended cold pressures. The TPMS warning light on the dash indicates underinflation or a system fault and should be addressed promptly.
- Safely pull over and inspect all tires for visible damage or punctures.
- Check tire pressures with a reliable gauge when tires are cold, then inflate to the recommended value on the placard.
- If the TPMS light remains on after inflation, or you suspect a faulty sensor, visit a tire shop or Audi service center to diagnose and reset the system.
After inflating or servicing tires, the TPMS will typically re-calibrate automatically after driving a short distance.
Where to find the official recommended pressures
The recommended cold tire pressures for your specific A4 configuration are listed on the driver’s door jamb placard and in the owner’s manual. Do not rely on the tire sidewall’s maximum pressure for normal inflation, as that rating is for maximum load handling and not your everyday driving pressures.
Summary
Checking tire pressures on the 2018 Audi A4 is straightforward thanks to the TPMS. You can view live per-tire pressures on the instrument cluster or through the MMI Car status screens, and you should inflate to the manufacturer’s cold-pressure values shown on the door placard. If warnings persist or readings seem inconsistent, have the TPMS sensors or wheels inspected by a professional to ensure accurate monitoring and safe driving.