Mercedes-Benz S 450 4MATIC Operator's Manual page 460

Switching on when approaching a sta-
tionary vehicle
If the vehicle in front of you is stationary,
you can only switch on DISTRONIC Plus if
your vehicle is also at a standstill.
Tap DISTRONIC Plus lever up 1 or
down 2 until desired speed is set.
DISTRONIC Plus is switched on.
or
Pull DISTRONIC Plus lever briefly in di-
rection of arrow 4 to call up speed
last set ( page 463).
DISTRONIC Plus is switched on.
i
It is helpful to switch on the DISTRONIC Plus
display in the instrument cluster ( page 455)
since you can only switch on DISTRONIC Plus un-
der a speed of 20 mph (30 km/h) when a vehicle
has been detected in front of you.
i
You can adjust the set speed using the
DISTRONIC Plus lever and the target distance
using the distance setting switch on the
DISTRONIC Plus lever ( page 464).
i
If DISTRONIC Plus is switched off,
®
PRE-SAFE Brake* ( page 77) will warn of an
impending collision if this function has been ac-
tivated with the instrument cluster control sys-
tem ( page 303).
Starting off
When the vehicle in front of you starts off:
Remove your foot from the brake
pedal.
Pull DISTRONIC Plus lever briefly in di-
rection of arrow 4.
or
Briefly step on the accelerator pedal.
Your vehicle starts off and adapts its speed
to the vehicle in front of you.
Controls in detail
Driving systems
Driving
If no vehicle is driving ahead of you,
DISTRONIC Plus functions like the cruise
control ( page 446).
When DISTRONIC Plus detects that the ve-
hicle in front of you is driving more slowly,
it brakes the vehicle in order to keep the
distance specified by you.
When DISTRONIC Plus detects that the ve-
hicle in front of you is driving faster, the ve-
hicle accelerates up to the set speed.
Warning!
When you step on the brake pedal, you
switch off DISTRONIC Plus except when the
vehicle is at a standstill. DISTRONIC Plus will
no longer brake your vehicle. You are always
responsible for maintaining a distance from
other vehicles, observing road speeds and
braking well in advance.
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