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:
It is possible to change the names of the different driver profiles used in
the vehicle.
Tap Settings in the Top view in the center display.
Tap System Driver Profiles.
Select Edit Profile.
A menu will open in which the driver profile can be changed...
The heated rear window and door mirrors are used to quickly remove condensation
and ice from the glass.
It is possible to select whether rear window and door mirror heating should be
automatically activated or deactivated when the engine is started...