Volvo XC90: Starting and driving / Activating and deactivating Eco drive mode using the function button
There is a function button for Eco drive mode in the center display's Function
view if the vehicle is not equipped with a drive mode control in the tunnel console.
When the engine is switched off, Eco mode is deactivated and must therefore be
reactivated each time the engine is started. ECO will be displayed in the
instrument panel when the function is activated.
Selecting Eco drive mode in the center display's Function view
Tap the Driving Mode ECO button to activate or deactivate the function.

An indicator light in the button will illuminate when the function is activated.
Eco drive mode can help make driving more fuel-efficient and eco-friendly.
Use this mode to save fuel and promote ecofriendly driving.
When Eco mode is activated, the following characteristics are modified:
The automatic transmission's shifting points...
Start/Stop is a function that temporarily switches off the engine when the
vehicle has stopped, e.g. at a traffic light or in heavy traffic, and then starts
it again automatically when needed...
Other information:
Max defroster is used to quickly remove condensation and ice from windows.
Max defroster deactivates automatic climate control and air recirculation, activates
the air conditioning, and changes blower speed to 5 and temperature to
HI.
NOTE
The volume increases when the blower speed is changed to 5...
Settings for how the vehicle confirms locking and unlocking can be adjusted
in the center display's Settings menu.
To change the locking response settings:
Tap Settings in the center display's Top view.
Tap My Car Locking.
Tap Visible Locking Feedback to select when the vehicle should provide
a visible response:
Lock
Unlock
Both
Or turn off the function by marking Off ...