Mercedes-Benz S350 TURBODIESEL Operator's Manual page 14

Starting and Turning Off the Engine
Before Starting
Engage parking brake and ensure
selector lever is in 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 fully. Turn key in
steering lock clockwise to the stop.
Release key only when the engine is
firing regularly and back off
accelerator slowly.
Hot Engine
Do not depress accelerator. Turn key in
steering lock clockwise to the stop.
If the engine has not fired after approx.
4 seconds, depress accelerator and
continue cranking until the engine is
firing regularly. Release key and back
off accelerator.
At very high coolant temperatures the
engine starting time can be shortened if
the accelerator is depressed slowly at
the beginning of the starting process.
Turning Off
Turn the key in the steering lock to
position 0 to stop the engine.
The key can only be removed with the
selector lever in position "P".
If the coolant temperature is very high
(e.g. after hard driving on mountain
roads), do not shut off the engine
immediately, but 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.
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