[Alexander_992]

Good evening guys, so I should completely replace the radiator fluid.

Looking on the Internet, there is a procedure to prevent air bubbles from forming in the circuit.

This procedure (which you will surely know) is carried out like this:

Once you have completely emptied the circuit and refilled it again, close the tank cap

- start the procedure by turning on the ignition
- low beams ON
- temperature at maximum and fan at minimum
- And press the accelerator pedal all the way down for 10 sec.

The process will take approximately 10/12 minutes.

Now a doubt has arisen in my mind.

Should the vent valve located on the tray next to the main cap remain open or closed during the process?

Because seeing some videos there are those who keep it open and those who keep it closed.

[JuniorTech]

this bleed procedure :

- Switch the ignition on.

- Set heater to maximum temperature and turn blower down to lowest speed.

- Press accelerator pedal for 10 seconds to floor.

- Then start the engine and run in idle.

- The electrical shift valve and the electric coolant pump are automatically switched on.

- Add coolant permanently up to maximum.

After 5 minutes idle:

- Press on accelerator 5 times up to approx. 2000 rpm.

- Idle for 10 s.

- Press on accelerator 5 times up to approx. 2000 rpm.

- Idle for 10 s.

Add coolant permanently up to maximum.

After another 5 minutes idle:

- Press on accelerator 5 times up to approx 2000 rpm

- Idle for approx. 10 s.

- Press on accelerator 5 times up to approx. 2000 rpm.

- Idle for 10 s.

10 minutes after the engine starts the charging/bleeding procedure for the electrical shift valve and electric coolant pump is ended.

Add coolant up to maximum

Close lid on coolant expansion tank.

Coolant routine ended.