How do I Change an Audi A4 Coolant Tank?

1. Open the engine hood of the Audi A4 by pulling the hood-release lever located underneath the steering panel of the car on the driver side. Push the hood up all the way until it locks into place.
2. Locate the coolant tank on the driver-side of the vehicle, just in front of the wheel well. The tank is clear and has a blue screw top. Place a drain pan below the coolant tank underneath the car. This pan will catch the coolant that falls from the tank when its being removed.
3. Remove the three bolts surrounding the coolant tank with the 10 mm socket wrench.
4. Detach the three hoses that run from the radiator to the coolant tank with a clamp removal tool. Wait for the coolant to drain completely into the pan below.
5. Lift the tank out of the engine cavity. Replace it with the new tank. Reattach the hoses with the clamps and fasten the tank with the bolts. Remove the cap and pour in coolant until it reaches the MAX line. Close the hood.