Mercedes-Benz S 350, Operator'S Manual

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Charge Indicator Lamp
Should the charge indicator lamp fail to
come on prior to starting when the key
is in steering lock position 2 or should
it fail to go out after starting or during
operation, this indicates a fault which
must be repaired at an authorized
MERCEDES-BENZ dealer
immediately.
If the charge indicator lamp comes on
while the engine is running, this may
indicate that the poly-V-belt has
broken. Should this condition occur,
the poly-V-belt must be replaced before
continuing to operate the vehicle.
Otherwise, the engine will overheat due
to an inoperative water pump which
may result in damage to the engine.
Do not continue to drive the vehicle
with the charge indicator lamp
illuminated. Doing so could result in
engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Engine Oil Pressure Gauge
The oil pressure at idle speed may drop
if the engine is at operating
temperature. This will not jeopardize
the engine's operational reliability.
Pressure must, however, rise
immediately upon acceleration.
Note:
If the oil pressure gauge needle drops
to "0" with the engine running, then
damage to the engine may occur with
continued operation. Turn off engine
immediately and contact an authorized
Mercedes-Benz dealer. Do not operate
the car until the condition is repaired.
Low Engine Oil Level Warning
Lamp
With the key in steering lock position
2, the oil level warning lamp comes on
and should go out when the engine is
running.
If the warning lamp comes on with the
engine running and at operating
temperature, the engine oil
level has dropped to approximately the
minimum mark on the dipstick.
When this occurs, the warning lamp
will first come on intermittently and
then stay on if the oil level drops
further.
If no oil leaks are noted and there is no
loss in engine oil pressure, continue to
drive to the nearest service station
where the engine oil should be topped
to the "full" mark on the dipstick with
an approved oil.
The low engine oil level warning light
should not be ignored. Extended
driving with the light illuminated could
result in engine damage that is not
covered by the Mercedes-Benz
Limited Warranty.
In addition to the warning lamp, the
engine oil level should be periodically
checked with the dipstick, for example
during a fuel stop, or before a long trip
(see Index).