Mercedes-Benz 300 CD-TURBO DIESEL 1985, Owner'S Manual

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E lectrical S ystem
Fuses
The fuse box is located in the engine
compartment.
A summary of the protected equip­
ment is printed in the fuse box cover.
Fuse arrangement in the box —
starting at engine side, proceeding
from inside to outside — upper row:
odd numbers
1, 3,5 etc. up to 13;
lower row: even numbers
2, 4, 6 etc. up to 14.
Fuses must be replaced, not repaired
or bridged.
Spare fuses are stored in the fuse box
(observe amperage and color code).
Determine the cause of a short prior
to replacing a burned-out fuse.
After replacing a fuse, screw on the
fuse box cover firmly to prevent cold
air leaks into the vehicle.
Battery
Check the fluid level in the cells from
outside approximately every 4 weeks,
and more often in summer and in hot
zones.
The fluid level must be between the
lower and the upper markings.
Refill battery only with distilled water.
Do not use metal funnels or push
through the overfill-protection dia­
phragms in filler holes.
The battery is completely filled when
the water stops draining through the
overfill-protection diaphragm.
To check the battery charge with a
hydrometer, push its tip through the
overfill-protection diaphragm and
take the electrolyte sample.
Coat battery terminal clamps with
acidproof grease. Keep battery clean
and dry.
The service life of the battery is also
dependent on its condition of charge.
It must be maintained sufficiently
charged for the battery to last an opti­
mum length of time.
Therefore, we recommend that you
have the battery charge checked fre­
quently if you use the vehicle mostly
for short distance trips, or if it is not
used for long periods of time.
Only charge battery with a battery
charger when it is disconnected from
the vehicle electrical circuit.