Warning: Coolant is toxic and should not be poured down the drain or mixed with household waste.
Draining the coolant
Unscrew the threaded cap of the expansion tank.
Warning! The cap may only be removed after the coolant has cooled to at least body temperature, otherwise you may be burned by hot coolant. For safety, cover the cap with a cloth.

Raise the vehicle. Unscrew and remove the lower radiator grille.
Place a clean container under the radiator.
Open the heating system valve completely. To do this, set the temperature regulator to the red range.

Open the drain bolt under the radiator and drain the coolant. You can use a coin to unscrew the bolt.
Tighten the radiator drain bolt slightly.
Filling with coolant
Fill the coolant into the expansion tank up to the MAX mark.
Start the engine and warm it up for 10 minutes to reach its operating temperature. Give it gas several times to reach a speed of over 2500 rpm. During the engine warm-up process, monitor the coolant level in the expansion tank and top up with coolant if necessary.
Close the expansion tank with a screw plug.
After the engine has cooled down, check the fluid level in the expansion tank. If necessary, add coolant to the MAX mark.
Install and screw the radiator grille.
Check the cooling system for leaks, paying particular attention to the hose connections, drain bolt and coolant pump.