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:
(Option/accessory.)
Passing assistance can assist the driver when passing other vehicles. The
function can be used with Adaptive Cruise Control* or Pilot Assist*.
When Adaptive Cruise Control or Pilot Assist is following another vehicle and
you indicate that you intend to pass that vehicle by using the turn signal1,
the system will begin accelerating toward the vehicle ahead before your vehicle..
(Option/accessory.)
The third row of seats has separate air conditioning that cools and dehumidifies
incoming air as needed.
Tap the symbol in the center
of the climate bar to open Climate view in the center display.
Select the Rear climate tab.
Tap 3rd row climate.
Air conditioning is activated/deactivated and the button lights up/goes
out.
NOTE
The air conditioning for the thir..