Mercedes-Benz SL 550 BlueEFFICIENCY, Operator'S Manual

Page: 145 / 572

Problem Possible causes/consequences and
M
Solutions
The coolant
temperature display is
showing more than
248 ‡ (120 †). The
coolant warning lamp
may also be lit and a
warning tone may
sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X
Check the coolant level (
Y
page 498). Observe the warning
notes as you do so and add coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
At coolant temperatures under 248 ‡(120 †), drive to the next
qualified specialist workshop.
X
Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-and-go traffic.
Automatic transmission
Important safety notes
G
WARNING
It is dangerous to shift the automatic
transmission out of parking position
P or
neutral position N if the engine speed is
higher than idle speed. If your foot is not firmly
on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
G
WARNING
Keep in mind that turning off the engine alone
only will shift the automatic transmission into
neutral position
N automatically.
Always shift the automatic transmission into
park position
P before turning off the engine.
Otherwise the vehicle could roll away which
could result in an accident and/or serious
personal injury.
Selector lever
Overview of transmission positions
! If the engine speed is too high or if the
vehicle is rolling, do not shift the
transmission directly from
D to R, from R
to D or directly to P.
Do not open the driver's door while the
vehicle is in motion. At low speeds in
transmission position
D or R, park position
P is otherwise engaged automatically.
The transmission could be damaged.
Selector lever
j
Park position
k
Reverse gear
Automatic transmission
143
Driving and parking
Z