Volvo XC90 Owner's Manual page 312

DRIVER SUPPORT
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WARNING
The driver support system only issues a
warning for obstacles detected by its radar
sensor – thus, a warning may come after a
delay or not at all.
Never wait for a warning or assistance.
•
Apply the brakes when necessary.
NOTE
Driver support can keep the vehicle sta-
tionary for no more than 5 minutes – after
that time the parking brake is applied and
the function is deactivated.
The parking brake must be released before
driver support can be reactivated.
Deactivation of the Auto-hold brake
function
In certain situations, auto-hold will be deacti-
vated when the vehicle is at a standstill and
the function will go into standby mode. This
means that the brakes will be released and the
vehicle could begin to roll. The driver must
actively apply the brakes to keep the vehicle
stationary.
This can occur if:
the driver depresses the brake pedal
•
the parking brake is applied
•
310
the gear selector is moved to the P, N or R
•
positions
the driver puts the function in standby
•
mode.
Auto Activate Parking Brake
In certain situations, the parking brake will be
applied to keep the vehicle at a standstill.
This occurs if the function is keeping the vehi-
cle stationary using the brakes and:
the driver opens the door or unbuckles
•
his/her seat belt
the function has kept the vehicle at a
•
standstill for more than approx. 5 minutes
the brakes overheat
•
the driver switches off the engine man-
•
ually.
Related information
Driver support systems (p. 276)
•
Adaptive Cruise Control* (p. 286)
•
Pilot Assist* (p. 296)
•
Brake functions (p. 395)
•
Drive mode for driver support
The driver can choose different drive modes
to determine how driver support should
maintain a time interval to the vehicle ahead.
Settings are made using the DRIVE MODE
controls.
Select one of the following:
Eco - Driver support will focus on provid-
•
ing good fuel economy, which will
increase the time interval to the vehicle
ahead.
Comfort - Driver support will focus on fol-
•
lowing the set time interval to the vehicle
ahead as smoothly as possible.
Dynamic * - Driver support will focus on
•
following the set time interval to the vehi-
cle ahead more exactly, which could mean
faster acceleration and heavier braking.
Related information
Driver support systems (p. 276)
•
Drive modes* (p. 410)
•
Setting time interval to the vehicle ahead
•
(p. 308)
* Option/accessory.