Starting And Turning Off The Engine - Mercedes-Benz 300 SD Operator's Manual

Starting and Turning Off the Engine

Before Starting
Engage parking brake and move the
selector lever to position "P" or "N".
Cold Engine
Turn key to steering lock position 2.
Charge indicator and pre-glow
indicator lamp should come on. The
preglow process starts. When the
preglow indicator lamp goes out, the
engine is ready for starting.
Ambient temperatures above
+ 14°F (-10°C):
Do not depress accelerator. Turn key in
steering lock clockwise to the stop.
Release key only when the engine is
firing regularly.
Ambient temperatures
below +14°F(-10°C):
Depress accelerator party. Turn key in
steering lock clockwise to the stop.
Release key only when the engine is
firing regularly and back off
accelerator slowly.
Do not interrupt the starting process. If
the engine is very cold, it is possible
that it will fail to start on subsequent
attempts.
At ambient temperatures below 0°F
(-18°C), depress accelerator three times
prior to starting.
Hot Engine
Turn key in steering lock clockwise to
the stop and start engine immediately
without depressing the accelerator.
Turning off
Turn the key in the steering lock to
position 0 only when the vehicle has
stopped moving.
The key can only be removed with the
selector lever in position "P".
Should the engine continue to operate
with the key in steering lock position
0, refer to Engine, Turning Off
Manually in Index.
If the coolant temperature is very high
(e.g. after hard driving on mountain
roads), do not shut off the engine
immediately, allow it to run for 1 - 2
minutes at increased idle speed with
selector lever in position "P" or "N".
Important!
Due to the installed starter non-repeat
feature, the key must be turned
completely to the left before attempting
to start the engine again.
Observe the oil pressure gauge
immediately after starting the engine.
In a very cold engine the oil pressure
will rise slowly. Do not speed up the
engine before pressure is registered on
the pressure gauge. If you do not see
the gauge register oil pressure, stop the
engine and have it checked.
The battery charge indicator lamp
should go out as soon as the engine has
started.
If the preglow indicator lamp fails to
light up, or lights up while driving, the
preglow system is defective and should
be repaired at your authorized
Mercedes-Benz dealer at the earliest
possible date.
The engine is equipped with a block
heater to provide reliable starting at
temperatures below 0° F (-18°C).
Refer to Winter Driving in Index.
14