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Resuming the set speed
Press and release the RESUME
control. This will automatically
return the vehicle to the previously
set speed. The set speed will display
continuously in the message center
while ACC is active.
Note: RESUME should only be used
if the driver is aware of the set
speed and intends to return to it.
Low speed automatic cancellation
ACC is not functional at vehicle speeds below 18 mph (30 km/h). Once
the vehicle speed drops below 18 mph (30 km/h), an audible alarm will
sound, DRIVER INTERVENE will be displayed in the message center,
and the automatic braking will be released. The driver must take control
at this time.
Hilly condition usage
It is recommended that the driver select a lower gear position when ACC
is active in situations such as prolonged downhill driving on steep grades
(i.e., driving in mountainous areas). In these situations, additional engine
braking is needed to reduce the load on the vehicle’s regular brake
system to prevent them from overheating. For more information,
reference Understanding the gearshift position of the 6-speed
automatic transmission in the Driving chapter.
Note: If ACC is applying brakes for an extended period of time, the
driver will receive a DRIVER INTERVENE message and chime and ACC
will shut down. This is to allow the brakes to cool down. When the
brakes have cooled down, the ACC will again function normally.
2009 MKS (mks)
Owners Guide (post-2002-fmt)
USA (fus)
Driver Controls
68