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:
The vehicle can be locked and unlocked in several different ways.
The vehicle can be locked and unlocked
using the buttons on the remote key
with the detachable key blade (if the battery in the remote key is discharged)
keyless* (Passive Entry), the remote key must be within range
from inside the vehicle using the lock controls in the doors
remote door unlocking with Volvo On Call...
(Option/accessory.)
(Depending on market, this function can be either standard or optional.)
Pilot Assist can be deactivated and put in standby mode. This may happen automatically
or be due to driver intervention.
Standby mode means that the function is selected in the instrument panel but
not activated...