Volvo XC90 2018 Owner's Manual page 427

Auto braking after a collision
In the event of a collision in which the activation
level is reached for the pyrotechnic seatbelt ten-
sioners or airbags, or if a collision with a large
animal is detected, the car's brakes are automat-
ically applied. This function is to prevent or
reduce the effects of any subsequent collision.
After a serious collision there is a risk that it is no
longer possible to control and steer the car. In
order to avoid or mitigate a possible further colli-
sion with a vehicle or an object in the vehicle's
path, the auto braking system is activated auto-
matically and brakes the car in a safe manner.
Brake lights and hazard warning lights are acti-
vated during braking. When the car has stopped,
the hazard warning lights continue to flash and
the parking brake is applied.
If braking is not appropriate, e.g. if there is a risk
of being hit by following traffic, the system can be
overridden by the driver depressing the accelera-
tor pedal.
The function assumes that the brake system is
intact after the collision.
Brake assist is included in the Rear Collision
Warning and Blind Spot Information safety sys-
tems.
Related information
Rear Collision Warning (p. 356)
•
• BLIS* (p. 357)
Brake functions (p. 417)
•
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 gearbox.
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 man-
ually. The driver display shows which gear posi-
tion is currently in use.
IMPORTANT
To prevent damage to any drive system com-
ponents, the working temperature of the
gearbox is checked. If there is a risk of over-
heating, 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.
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* Option/accessory.