adaptive cruise control (ACC) 133
Controls Safety Driving tips General maintenance Self-help Technical data
Applies to vehicles: with adaptive cruise control
Setting the distance
The distance can be set in 4 different stages.
– Briefly press the sliding switch ⇒ fig. 142 once towards
or . The display in the instrument cluster will briefly
show the current distance setting.
– Press the sliding switch again towards or to
increase or reduce the distance by one level at a time.
Choosing the distance
The adaptive cruise control system determines the distance to the
vehicle in front by time intervals. It defines a time-based distance to
the vehicle in front which is kept at a constant level. This converts
to a distance which depends on the speed - the higher the speed,
the higher the safety distance in metres ⇒ .
The actual distance maintained by the adaptive cruise control can
be longer or shorter, depending on the traffic situation and the
driving style of the driver in front.
Distance 1
This setting is suitable for brisk driving in a line of traffic. The time
interval is 1 second. This is equivalent to (for instance):
• A distance of 14 metres at a speed of 50 km/h
• A distance of 36 metres at a speed of 130 km/h
Distance 2
This setting is suitable for relaxed “moving with the flow” in a line
of traffic. The time interval is 1.3 seconds. This is equivalent to (for
instance):
• A distance of 18 metres at a speed of 50 km/h
• A distance of 47 metres at a speed of 130 km/h
Distance 3
This (recommended) setting is suitable for relaxed “moving with the
flow” in a line of traffic. The time interval is 1.8 seconds. This is
equivalent to (for instance):
• A distance of 25 metres at a speed of 50 km/h
• A distance of 65 metres at a speed of 130 km/h
Distance 4
This setting is suitable for single-carriageway roads. The time
interval is 2.3 seconds. This is equivalent to (for instance):
• A distance of 32 metres at a speed of 50 km/h
• A distance of 83 metres at a speed of 130 km/h
You can control the acceleration and braking response of your
vehicle in adaptive cruise control mode by adjusting the settings on
the sound system or MMI* ⇒ page 139. Depending on the driving
program and distance selected, acceleration and braking response
will range from dynamic (1) to relaxed (5).
Fig. 142 Control lever
for: Setting the
distance
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