How do I change the engine coolant in my Audi A4?

I've noticed that my engine coolant levels have been low and I want to learn how to change it myself. Can someone give me a step-by-step guide on how to do this in my Audi A4?

First, make sure your engine is completely cooled down and the car is parked on a flat surface. Locate the engine coolant reservoir and remove the cap. Then, use a coolant drain tool to remove the old coolant and dispose of it properly. After that, refill the reservoir with the recommended engine coolant and check for any leaks before closing the cap. Remember to always follow the manufacturer's instructions and wear protective gloves.

Changing engine coolant can be a bit messy, so be sure to have a catch pan handy. Start by locating the drain valve on the radiator and opening it to drain the old coolant. Once it's drained, flush the system with water and then pour in the new coolant. It's always a good idea to check your car's manual for specific instructions and recommended coolant type.