Get the engine warm by driving for 15 minutes. Don't over do it; the goal is to get the coolant warm enough to flow, but cool enough to prevent hazards

Jack the front of the car up. As in all cases, ensure this is done safely and verify that the car is secure before venturing underneath it

Put on safety goggles. Coolant is hot and can spray/steam in random directions

Switch the ignition to on, but do not start the engine

Turn on the climate control, set the temperatures to maximum, and switch the vent to warm. This will open the valves fully and allow for maximum drainage

Slowly remove the bleeder screw with a phillips screw driver. Steam and coolant may bubble out

Unscrew the large circular cap

Locate the coolant plug. It's on the driver's side sticking out off the inside of the bumper, and is the only thing with a large phillips screw head in the area.

Place the coolant container underneath the plug to collect the old coolant

Slowly unscrew the drain plug with a phillips screw driver. Be careful as coolant is hot

Remove the plug completely and allow the coolant to flow into the container.

As the stream slows down, move the container accordingly to catch all the coolant. Remember what I said about it being hot?

Put the plug back. Do not over tighten, but make sure it is secure.

Pour the 50/50 coolant mix into the expansion tank. Use a funnel and do so slowly; coolant is a slippery thing to spill on the garage floor

If the car does not immediately absorb the coolant into the cooling system, run the engine briefly to get it to cycle through.

The coolant should be filled to the Cold (Kalt) line.

Take the car for a short and sweet drive around the neighborhood. Don't push it too hard or go too far in case something went wrong.

Put the heat on full blast and make sure it feels warm.

Check to make sure the A/C blows cold air.

Make sure the engine temperature stays in the center.

If anything goes awry, park it and check the coolant levels. If they've decreased, the cooling system was low and sucked most out of the expansion tank. Nothing to be alarmed about; just add more coolant and try again.

Clean up the garage floor, put away the tools, and give yourself a pat on the back

Take the coolant to a local recycling facility. Most auto shops should be able offer assistance with this. Remember that coolant contains antifreeze, which is hazardous as defined by the EPA.

After a night of cooling down, the coolant level may decrease due to a temperature drop. Top her off and you're good to go.