Max defroster deactivates auto-regulation of the climate and air recirculation, activates air conditioning and changes the fan level to 5 and the temperature to HI.
Note
Changing the fan level to 5 increases the noise level.
When max defroster is deactivated, the climate control system returns to the previous settings.
Activating and deactivating max defroster from centre console
There is a physical button in the centre console for quick access to max defroster.
With heated windscreen* the max defroster can only be activated individually from the climate view in the centre display.
![P5/P6-1746–Climate–Physical button windscreen](https://www.volvocars.com/images/support/imgc197e5a1829ae357c0a80152753123af_1_--_--_VOICEpnghigh.png?imwidth=1280)
Cars without heated windscreen:
Press the button.
Max defroster is activated/deactivated and the button illuminates/extinguishes.
Cars with heated windscreen:
Press the button repeatedly in order to switch between the three levels:
- Activated heated windscreen
- Activated heated windscreen and max defroster
- Deactivated.
Heated windscreen and max defroster are activated/deactivated and the button illuminates/extinguishes.
Note
Max defroster starts with a certain delay in order to avoid a short increase in fan level if the heated windscreen is deactivated by two quick presses of the button.
Activating and deactivating max defroster from centre display
![P5-1507-Icon-settings-climate](https://www.volvocars.com/images/support/imgb739edde4700d104c0a8015206f841d1_1_--_--_VOICEpnghigh.png?imwidth=1280)
Open climate view in the centre display by pressing the symbol in the middle of the climate row.
![P5/P6-1846–Climate–Button max defroster](https://www.volvocars.com/images/support/img661d7544682481afc0a8015277dcfe2a_1_--_--_VOICEpnghigh.png?imwidth=1280)
Press Max.
Max defroster is activated/deactivated and the button illuminates/extinguishes.