Driving With The Start/Stop Function - Volvo V90 Owner's Manual

STARTING AND DRIVING
Start/Stop function
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 the brake
pedal is released.
The Start/Stop function reduces fuel consump-
tion, which helps to reduce exhaust emissions.
The system makes it possible to drive more eco-
nomically and climate-smart by letting the engine
auto-stop when appropriate.
Related information
•
Driving with the Start/Stop function (p. 424)
•
Conditions for the Start/Stop function
(p. 426)
•
Drive modes* (p. 419)
6 Normal start mode.
424

Driving with the Start/Stop function

Start/Stop is a function that temporarily turns off
the engine when the vehicle is stationary and
then automatically starts it again when the vehi-
cle starts moving.
The Start/Stop function is available when the
engine is started and can be activated if certain
conditions are met. The instrument panel indi-
cates if the function is available, active or not
available.
All of the vehicle's ordinary systems, such as
lighting, radio, etc. function normally when the
engine has been auto-stopped. Certain functions
may be temporarily reduced, however, such as
the climate system's blower speed or extremely
high audio system volume.
Auto-stop
To auto-stop the engine:
•
Stop the vehicle by applying the brakes and
keep the brake pedal depressed. The engine
will auto-stop.
6
In Eco or Comfort drive mode, the engine may
auto-stop before the vehicle has completely stop-
ped.
With Adaptive Cruise Control or Pilot Assist acti-
vated, the engine will auto-stop after approxi-
mately three seconds.
Auto-start
The following conditions must be met for the
engine to auto-start.
•
Release the brake pedal. The engine will
auto-start and the vehicle can be driven. On
an uphill gradient, Hill Start Assist (HSA) will
activate to help prevent the vehicle from roll-
ing backward.
•
When Auto-hold is activated, auto-start will
be delayed until the accelerator is pressed.
•
When Adaptive Cruise Control or Pilot Assist
are activated, the engine will auto-start when
the accelerator pedal is depressed or the
button on the left-side steering wheel
keypad is pressed.
•
Maintain pressure on the brake pedal and
press the accelerator pedal. The engine will
auto-start.
•
On a downhill gradient: Release the brake
pedal slightly so that the vehicle begins to
roll. The engine will auto-start after a slight
increase in speed.
* Option/accessory.