Volvo XC90 Owner's Manual page 314

DRIVER SUPPORT
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NOTE
Driver support can keep the vehicle stationary
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 deactivated
when the vehicle is at a standstill and the func-
tion 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
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.
40 Adaptive Cruise Control
41 Adaptive Cruise Control
Only the left-hand turn signal for left-hand drive vehicles, or right-hand turn signal for right-hand drive vehicles.
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312
This occurs if the function is keeping the vehicle
stationary using the brakes and:
• the driver opens the door or unbuckles
his/her seat belt
• the function has kept the vehicle at a stand-
still for more than approx. 5 minutes
• the brakes overheat
• the driver switches off the engine manually.
Related information
• Driver support systems (p. 276)
•
Adaptive Cruise Control* (p. 289)
• Pilot Assist (p. 298)
• Brake functions (p. 394)
Passing assistance
Passing assistance can assist the driver when
passing other vehicles. The function can be
used with Pilot Assist or Adaptive Cruise Con-
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trol* (ACC ).
How passing assistance works
When Pilot Assist or ACC is following another
vehicle and you indicate that you intend to pass
that vehicle by using the turn signal
will begin accelerating toward the vehicle ahead
before your vehicle has moved into the passing
lane.
The function will then delay a speed reduction to
avoid early braking as your vehicle approaches a
slower-moving vehicle.
The function remains active until your vehicle has
passed the other vehicle.
WARNING
Please note that this function can be acti-
vated in more situations than just passing
another vehicle, such as when a direction indi-
cator is used to indicate a lane change or
before exiting to another road – the vehicle
will then briefly accelerate.
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, the system
* Option/accessory.