Driving Systems; Activating; Lever; Setting Current Speed - Mercedes-Benz 2011 SL550 Roadster Operator's Manual

The currently set speed or last set speed
("Resume" function) appears in the left
multifunction display:
USA only: e.g. CC 55 MPH
R
Canada only: e.g. ¯ 90 Km/h
R
G
Warning!
The cruise control is a convenience system
designed to assist the driver during vehicle
operation. The driver is and must always
remain responsible for the vehicle's speed
and for safe brake operation.
Only use the cruise control if the road, traffic,
and weather conditions make it advisable to
travel at a constant speed.
The use of the cruise control can be
R
dangerous on winding roads or in heavy
traffic because conditions do not allow safe
driving at a constant speed.
The use of the cruise control can be
R
dangerous on slippery roads. Rapid
changes in tire traction can result in wheel
spin and loss of control.
Deactivate the cruise control when driving
R
in fog.
The "Resume" function should only be
operated if the driver is fully aware of the
previously set speed and wishes to resume
this particular preset speed.
G
Warning!
The cruise control brakes automatically so
that the set speed is not exceeded.
Setting current or higher speed
:
Setting current or lower speed
;
Canceling the cruise control
=
Activating the cruise control or resuming
?
to last set speed
Activating cruise control
You can activate the cruise control at a
vehicle speed above 20 mph (30 km/h).
You cannot activate the cruise control
when you brake
R
when you have engaged the parking brake
R
when the automatic transmission is in park
R
position P, reverse gear R, or neutral
position N
®
the ESP is switched off or has switched off
R
due to a malfunction
The vehicle speed displayed in the
speedometer can briefly vary from the speed
setting for the cruise control system.

Setting current speed

X
Accelerate or decelerate to the desired
speed.
X
Briefly lift the cruise control lever in
direction of arrow : or press in direction
of arrow ;.
X
Remove your foot from the accelerator
pedal.
i On uphill grades, the cruise control may
not be able to maintain the set speed. Once

Driving systems

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