How do I check and refill the coolant in my Audi A4?

I noticed that my Audi A4's coolant level is low. How do I properly check and refill the coolant to prevent any potential engine damage?

Firstly, make sure your car is parked on level ground and the engine is cool. Locate the coolant reservoir, which is often a translucent plastic tank with a cap labeled 'coolant'. Check the level of the coolant and if it is below the minimum mark, refill it with a 50/50 mix of coolant and water. Make sure to use the type of coolant specified in your car's manual.

If the coolant level is consistently low, you may have a leak in your cooling system. It's important to get this checked out by a professional as soon as possible to avoid any major damage to your engine. Don't wait until the coolant light comes on, as by then the problem may be more severe.