Charge Indicator Lamp; Oil Pressure Gauge; Low Engine Oil Level Indicator Lamp; Engine Oil Consumption - Mercedes-Benz 300 SDL turbo 126 D Owner's Manual

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 author­
ized MERCEDES-BENZ dealer as
soon as possible.
When the charge indicator lamp
glows while the engine is running, the
V-belt may have broken (which also
makes the water pump inoperative).
This will cause overheating and dam­
age to the engine. In this case the
V-belt must be replaced immediately.

Oil Pressure Gauge

The oil pressure at idle speed may
drop to 0.3 bar (4.4 psi) if the engine
is at operating temperature. This will
not jeopardize its operational reliabil­
ity.
Pressure must, however, rise
immediately upon acceleration.
58
Low Engine Oil Level
Indicator Lamp
The indicator lamp comes on with the
key in steering lock position 2 and
should go out when the engine is run­
ning.
if it comes on with the engine running
and at operating temperature, the oil
level has dropped to the minimum
mark on the dipstick. When this
occurs, the indicator 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
"fu ll" mark of the dipstick (see
page 66).
In addition to the indicator lamp, the
engine oil level should be periodically
checked with the dipstick, for exam­
ple during a fuel stop, or before a long
trip (see page 66).

Engine Oil Consumption

Engine oil consumption can only be
determined after a certain mileage
has been covered. During the break-
in period, higher oil consumption may
be noticed and is normal.

Coolant Temperature Gauge

If the antifreeze mixture is effective to
- 30° C ( - 22° F) the boiling point of
the coolant in the pressurized cooling
system of your vehicle is approx.
125° C (257° F) (see also "Fuels,
Coolants, Lubricants, etc." ).
During severe operating conditions
and stop-and-go city traffic, the cool­
ant temperature may rise close to the
red marking.

Low Engine Coolant Level

Indicator Lamp
The indicator lamp comes on with the
key in steering lock position 2, and
should go out when the engine is run­
ning.
If it comes on with the engine running,
the coolant has dropped below the
required level. If no leaks are notice­
able and the engine temperature does
not increase, continue to drive to the
nearest service station and have cool­
ant added to the coolant system (see
page 65).