S90 Defrosting windows and mirrors

Using the buttons in the center console

The buttons in the center console offer quick access to the defroster functions.

On models with the optional heated windshield, the max. defroster function can only be activated separately from the Climate view in the center display.

P5-1507–Climate–Physical buttons — Center console buttons

P5-Icon red circle 1 — Center console buttons

Models without a heated windshield.

Press button (1).

Max. defroster is activated (button indicator light on)/deactivated (button indicator light off).

Models with a heated windshield*.

Press button (1) repeatedly to access the function's three levels:

Activate windshield heating
Activate windshield heating and max. defroster
Deactivated

The windshield heating is activated (button indicator light on)/deactivated (button indicator light off).

Note

Max. defroster starts after a slight delay to avoid a brief increase in blower speed if the heated windshield function has been deactivated by pressing the button twice in quick succession.

Heated rear window and door mirrors

Press button (2).

Heating for the rear window/door mirrors is activated (button indicator light on)/deactivated (button indicator light off).

From the center display's Climate view

Activate/deactivate max. defroster

P5-1507–Climate–Button max defroster — Max. defroster button in Climate view

Open Climate view in the center display.

Tap Max.

Max. defroster is activated (button lights up)/deactivated (button is off).

Max. defroster overrides automatic climate control and recirculation, and activates the air conditioning, changes blower speed to 51 and the temperature to HI1.

When max. defroster is deactivated, the climate system returns to the previous settings.

Activating/deactivating windshield heating*

P5-1507–Climate–Button electric windscreen — Windshield heating button in Climate view

Open Climate view in the center display.

Tap Electric.

Windshield heating is activated (button lights up)/deactivated (button is off).

If windshield heating is activated while the Start/Stop function has turned off the engine, the engine will restart.

Note

Triangular areas at the far sides of the windshield are not heated electrically and will take slightly longer to defrost/de-ice.
The heated windshield may affect the performance/range of e.g., transponders used to automatically pay highway tolls or other communication equipment.

Activating/deactivating rear window and door mirror heating

P5-1507–Climate–Button rear defroster — Rear window/door mirror heating button in Climate view

Open Climate view in the center display.

Tap Rear.

Rear window/door mirror heating is activated (button lights up)/deactivated (button is off).

Automatically activating/deactivating the window heating function when the engine is started

The rear window/door mirror/windshield heating* can be set to start automatically when the engine is started. The heating function switches off automatically when the glass surfaces are sufficiently warm and the condensation/ice has disappeared.

Tap Settings in the center display's Top view and select Climate.

Activate/deactivate the respective defroster functions when the engine is started by selecting/deselecting the boxes for Auto Electric Front Defroster and Auto Electric Rear Defroster.

The heating function will switch off automatically when the window/mirror is sufficiently warm and the ice/condensation has disappeared.