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DRIVER SUPPORT
* Option/accessory.
178
WARNING
The brake pedal moves when the adaptive
cruise control system modulates the brakes.
Do not rest your foot under the brake pedal.
The ACC system is designed to smoothly regu-
late speed. However, the driver must apply the
brakes in situations that require immediate brak-
ing. This applies when there are great differences
in speed between vehicles, or if the vehicle ahead
brakes suddenly.
WARNING
Due to limitations in the radar sensor, braking
may occur unexpectedly or not at all, see
Adaptive Cruise Control – limitations (p. 185).
Adaptive Cruise Control can be put in active
mode at any permitted speed. However, if the
vehicle's speed falls below 18 mph (30 km/h) or
if engine speed (rpm) becomes too low, ACC dis-
engages (goes into standby mode) and will no
longer modulate the brakes. The driver will then
have to maintain a safe distance to the vehicle
ahead.
WARNING
When Adaptive Cruise Control is in standby
mode or is switched off completely, the
brakes will not be modulated automatically.
The driver must assume full control over the
vehicle.
Warning light—driver braking required
Adaptive Cruise Control can exert brake force
that is equivalent to approximately 40% of the
vehicle's total braking capacity. In situations
requiring more brake force than ACC can provide
and if the driver does not apply the brakes, an
audible signal from the Collision Warning system
will sound and warning light will illuminate (see
Collision warning* – function (p. 203)) in the
windshield to alert the driver to react.
NOTE
Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the
warning symbol in the windshield difficult to
see.
WARNING
Adaptive Cruise Control only warns of vehicles
detected by the radar sensor, see Adaptive
Cruise Control – limitations (p. 185). In some
cases there may be no warning or the warn-
ing may be delayed. The driver should always
apply the brakes when necessary.
Steep inclines and/or heavy loads
ACC is primarily intended for use on fairly level
roads. The system may have difficulty maintaining
the correct distance to a vehicle ahead on steep
inclines, if the vehicle is carrying a heavy load or
is towing a trailer. In these situations, the driver
should always be prepared to apply the brakes if
necessary.
Related information
•
Adaptive Cruise Control – introduction
(p. 175)
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