Limitations For Adaptive Cruise Control - Volvo XC90 Owner's Manual

DRIVER SUPPORT
||
NOTE
ACC can keep the car stationary for a maxi-
mum of 5 minutes. After this the parking
brake is applied and adaptive cruise control is
disengaged.
The parking brake must be released before
the adaptive cruise control can be reactivated.
Cessation of automatic braking
In some situations, automatic braking ceases on
reaching 0 km/h and Adaptive Cruise Control is
set in standby mode. This means that the brakes
are released and the car may start to roll - the
driver must therefore intervene and brake the car
himself/herself to keep it stationary.
This may take place in the following situations:
•
the driver puts his/her foot on the brake
pedal
•
the parking brake is applied
•
the gear selector is moved to P, N, or R posi-
tion
•
the driver sets the adaptive cruise control in
the standby mode.
Automatic activation of parking brake
In certain situations the parking brake is applied
to keep the car stationary.
Adaptive Cruise Control
56
320
This takes place if the adaptive cruise control is
holding the car stationary with the foot brake and:
•
the driver opens the door or takes off his/her
seatbelt
•
ACC has kept the car stationary for more
than approx. 5 minutes
•
the brakes have overheated
•
the driver switches the engine off manually.
Related information
•
Adaptive Cruise Control* (p. 308)
Limitations for Adaptive Cruise
Control
56
Adaptive cruise control (ACC ) may have limita-
tions in certain situations.
Steep roads and/or heavy load
Bear in mind that the adaptive cruise control is
primarily intended for use when driving on level
road surfaces. The function may have difficulty in
keeping the correct distance from the vehicle
ahead when driving on steep downhill slopes - in
which case, be extra attentive and ready to brake.
•
Do not use adaptive cruise control if the car
has a heavy load or a trailer is connected to
the car.
Miscellaneous
•
Drive mode Off Road cannot be selected
when the adaptive cruise control is activated.
NOTE
The function uses the car's camera unit,
which has some general limitations, see the
"Limitations for camera unit" section.
NOTE
The function uses the car's radar unit, which
has some general limitations, see the section
"Limitations for radar unit".
* Option/accessory.