Driving Systems - Mercedes-Benz 2009 SLK-Class Operator's Manual

Activating cruise control
You can activate the cruise control at vehicle
speeds 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 posi-
tion N
®
the ESP is switched off or has switched off
R
due to a malfunction
Setting current speed
X
Accelerate or decelerate to the desired
speed.
X
Briefly lift the cruise control lever in direc-
tion of arrow or depress in direction of
1
arrow 2.
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
the grade eases, the set speed will be
resumed.
On downhill grades, the cruise control
maintains the set speed by braking with the
vehicle's brake system.
Vehicles with automatic transmission:
In addition, on longer downhill grades the
automatic transmission will automatically
downshift.
i Vehicles with manual transmission:
If you depress the clutch pedal when shift-
ing into another gear, the engine speed may
increase.
Always drive with sufficient, but not
R
excessive, engine speed.
Shift the gear in a timely manner.
R
Avoid shifting down more than one gear
R
if at all possible.
Canceling cruise control
X
Depress the brake pedal.
or
X
Briefly push the cruise control lever in
direction of arrow 3.
The last set speed is stored for later use.
The last stored set speed is canceled when
the engine is turned off.
Controls in detail

Driving systems

The cruise control switches off automatically
when
you depress the brake pedal.
R
you engage the parking brake.
R
the vehicle speed falls below 20 mph
R
(30 km/h).
®
the ESP is in operation.
R
®
the ESP is switched off with the ESP
R
switch.
®
the ESP has switched off due to a mal-
R
function.
Vehicles with manual transmission: you
R
engage neutral or depress the clutch pedal
for more than 7 seconds during shifting into
another gear.
Vehicles with automatic transmission: you
R
shift the automatic transmission into neu-
tral position N while driving.
Depressing the accelerator pedal does not
deactivate the cruise control. After a brief
acceleration (e.g. for passing), the cruise con-
trol will resume the last set speed.
®
185