Speedtronic; Variable Speedtronic - Mercedes-Benz A-Class Series Owner's Manual

SPEEDTRONIC

Important safety notes
SPEEDTRONIC ensures that you do not
exceed a stored speed. You must select a low
gear in good time on long and steep downhill
gradients, especially if the vehicle is laden or
towing a trailer. By doing so, you will make
use of the braking effect of the engine, which
relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly.
G
Risk of accident
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely.
G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid.
You can set a variable or permanent limit
speed:
variable for speed limits, e.g. in built-up
R
areas
permanent for long-term speed restric-
R
tions, e.g. when driving with winter tyres
fitted ( page 137)
Y
G
Risk of accident
Speedtronic is only an aid designed to assist
driving. You are responsible for the vehicle's
speed and for braking in good time.
i
The speed indicated in the speedometer
may differ slightly from the limit speed
stored.

Variable SPEEDTRONIC

General notes
You can operate cruise control and variable
SPEEDTRONIC with the cruise control lever.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
LIM indicator lamp off: cruise control is
R
selected.
LIM indicator lamp on: variable SPEED-
R
TRONIC is selected.
You can use the cruise control lever to limit
the speed to any speed above 30 km/h while
the engine is running.
To store the current or higher speed, roun-
:
ded up to the nearest ten
LIM indicator lamp
;
To resume the last stored speed or to
=
make fine adjustments in 1 km/h incre-
ments
To store the current or lower speed, roun-
?
ded down to the nearest ten
To switch between cruise control and var-
A
iable SPEEDTRONIC
To deactivate variable SPEEDTRONIC
B
Selecting variable SPEEDTRONIC
Check whether LIM indicator lamp ; is on.
X
If it is on, variable SPEEDTRONIC is already
selected.
Driving systems
135
Z