Exterior Light Failure Indicator Lamp; Fuel Reserve Warning Lamp; Coolant Temperature Gauge; Low Engine Coolant Level - Mercedes-Benz 420 SEL 1986 Owner's Manual

Exterior Light Failure Indicator
Lamp
The light failure indicator comes on
with the key in steering lock position 2
and will go out when the engine
starts.
If it comes on with the engine running,
it indicates a light failure.
If an exterior light fails, the indicator
will come on only when that light is
switched on.
If a brake or turn signal light fails, the
light failure indicator will come on
when applying the brake or actuating
the turn signal and stay on until the
engine is turned off.

Fuel Reserve Warning Lamp

The fuel reserve warning lamp will
come on when the key is turned to
steering lock position 2, and will go
out after the engine is running.
If the warning lamp stays on after
the engine starts, or comes on while
driving, it indicates that the fuel level
is down to the reserve quantity (12.5 I
[3.3 US gal]).

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, Cool­
ants, 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. You should then have
the engine cooling system checked
for signs of leakage and have it refil­
led as soon as possible (see page 70).
Low Windshield and Headlamp
Washer Fluid 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 level of the reservoir has dropped
to about % of the total volume and
should be filled with washer fluid to
which about 3 capfuls of MB auto­
shampoo have been added.
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