Mercedes-Benz SL 2008 Owner's Manual page 137

Controls
Driving systems
Distronic has not yet detected the vehicle
cutting in. The distance to this vehicle will be
too short.
Narrow vehicles
Distronic has not yet detected the vehicle in
front on the edge of the carriageway, because
of its relatively narrow width. The distance to
the vehicle in front will be too short.
134
Speedtronic
Speedtronic brakes automatically so that you
do not exceed the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select shift range
1, 2 or 3 in good time. 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. If you need addi-
tional braking, depress the brake pedal
repeatedly rather than continuously.
G Risk of accident
Never depress the brake pedal continu-
ously 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. for driving with winter tyres
( page 136)
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
With the cruise control lever, you can operate
cruise control, Distronic* and variable
Speedtronic.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
LIM indicator lamp off:
R
* optional