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:
Information on vehicles with activated hazard warning flashers or which have
detected slippery road conditions is not always communicated between all vehicles
in the affected area.
This may be the case if:
No or insufficient Internet connection.
The maneuvers (steering wheel movements, acceleration or braking) made by
the vehicles on slippery surfaces are too weak for friction between the t..
At certain speeds, vehicles with automatic transmissions and the driver support
functions Adaptive Cruise Control* and Pilot Assist* can switch target vehicles.
Switching target vehicles
If the target vehicle ahead turns suddenly, there may be stationary
traffic ahead.
When driver support is actively following another vehicle at speeds under
30 km/h (20 mph) and switches targets from a moving ..