Volvo V90 Owner's Manual page 452

STARTING AND DRIVING
Gearbox
The gearbox is part of the car's powertrain
(power transmission) between engine and
drive wheels. The function of the gearbox is
to change the gear ratio depending on speed
and power requirements.
The car has an eight-speed automatic gear-
box, and an electric motor for rear-wheel drive.
The number of gear changes means that the
engine's torque and power range can be used
effectively. Two of the gears are overdrive
gears that save fuel when driving at constant
engine speed. It is also possible to select
gears manually. The driver display shows
which gear position is currently in use.
Related information
Automatic gearbox (p. 450)
•
Gear shift indicator (p. 455)
•
450
Automatic gearbox
With an automatic gearbox, the system
selects a gear so that you can drive as
energy-efficiently as possible. The gearbox
also has a manual gearshift mode.
Overview of gear lever and shift pattern in the driver
display.
The driver display shows the gear position
selected:
R, N, D or B. The P position is electrical.
During manual gear changing, the gear being
used is also shown.
IMPORTANT
To prevent damage to any drive system
components, the working temperature of
the gearbox is checked. If there is a risk of
overheating, a warning symbol illuminates
in the driver display and a text message is
shown - follow the recommendation given.
Symbols in the driver display
If a fault should occur in the gearbox, the
driver display shows a symbol and a message.
Symbol Specification
Information or error message for
gearbox. Follow the recommen-
dation given.
Hot or overheated gearbox. Fol-
low the recommendation given.
Reduced performance
eration performance reduced
In the event of a temporary pow-
ertrain fault, the car can go into a
Limp home mode with reduced
engine power to prevent damage
to the powertrain.
/ Accel-