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DRIVER SUPPORT
* Option/accessory.
274
NOTE
ACC can keep the vehicle stationary for no
more than 5 minutes – after that time the
parking brake is applied and Adaptive Cruise
Control is deactivated.
The parking brake must be released before
Adaptive Cruise Control 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 Adaptive
Cruise Control 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 sta-
tionary.
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 Adaptive Cruise Control 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 Adaptive Cruise Control is keeping
the vehicle stationary using the brakes and:
•
the driver opens the door or unbuckles
his/her seat belt
•
ACC has kept the vehicle at a standstill for
more than approx. 5 minutes
•
the brakes overheat
•
the driver switches off the engine manually.
Related information
•
Adaptive Cruise Control* (p. 263)
Adaptive Cruise Control limitations
Adaptive Cruise Control (ACC
48
) may have lim-
ited functionality in certain situations.
Steep roads and/or heavy loads
Adaptive Cruise Control is primarily intended to
be driven on flat roads. The function may not be
able to maintain the correct time interval to the
vehicle ahead when driving down steep hills. The
driver should be extra attentive and prepared to
apply the brakes.
•
Do not use Adaptive Cruise Control if the
vehicle is carrying a heavy load or towing a
trailer.
Other limitations
•
The
Off Road drive mode cannot be
selected if Adaptive Cruise Control is acti-
vated.
NOTE
The function uses the vehicle's camera unit,
which has some general limitations – see the
section "Camera unit limitations".
NOTE
The function uses the vehicle's radar unit,
which has some general limitations – see the
section "Radar unit limitations".
48
Adaptive Cruise Control
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