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Volvo S90 Twin Engine Owner's Manual page 419

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Related information
Automatic transmission (p. 412)
Gear selector positions for automatic
transmissions (p. 413)
All Wheel Drive
5
The kickdown function
Kickdown can be used when maximum
acceleration is needed, e.g. when passing.
When the accelerator pedal is depressed all
the way to the floor (past the normal full accel-
erator position), the transmission will auto-
matically engage kickdown, i.e. immediately
shift down to a lower gear.
If the accelerator pedal is released from the
kickdown position, the transmission will auto-
matically shift up again.
Safety function
The transmission control module is equipped
with a downshift protection feature to help
prevent the engine from overheating.
In some conditions, the transmission will pre-
vent downshifting/kickdown if this would lead
to such high engine speed (rpm) that the
engine could be damaged. If the driver still
attempts downshifting or kickdown at a high
rpm, nothing will happen and the original gear
will remain selected.
With kickdown, the vehicle can downshift one
or more steps at a time depending on the
engine speed. The vehicle upshifts when the
engine reaches its maximum rpm to prevent
engine damage.
Related information
Automatic transmission (p. 412)
STARTING AND DRIVING
All Wheel Drive (AWD)
All-wheel drive (AWD
5
), also called four-
wheel drive, means that power is distributed
to all four wheels, which improves traction.
The electric motor that powers the rear wheels
enables electronic all-wheel drive functionality.
All-wheel drive reacts differently depending on
which drive mode is selected.
Related information
Drive modes (p. 419)
Transmission (p. 412)
417

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