Good for you for taking the initiative and checking out how to take care of your Audi! And luckily for you, all new Audi A4 luxury sedans come equipped with a Tire Pressure Monitoring System (TPMS) that lets you know when the air pressure in one or more of your tires is too low via tire pressure sensors. A TPMS indicator will light up on the dashboard to indicate that your tires need more air.
Thanks to the wonderful world of technology, you don’t really need to physically check your tire pressure on Audi A4 vehicles! But if you absolutely need to check it yourself, just grab your handy tire pressure gauge, remove the tire’s valve stem cap, and use the gauge on the valve stem.