Electrical System; Fuses; Battery; Spark Plugs - Mercedes-Benz 450 SL 1980 Owner's Manual

Fuses

The fuse box (1) is accom modated
in the R-H side flo o r space.
A table in the fuse box cover (2)
depicts all the protected electrical
units.
Fuses must not be repaired or
bridged.
Spare fuses for emergencies (ob­
serve amperage and color) are
stowed with the tools.
Diagnose the cause of a short
circu it before replacing a burned-
out fuse.

Battery

The battery is located in the trunk.
Replenish with distilled water
approxim ately every 4 weeks,
and more often in summer and in
hot zones.
Do not use metal funnels and do
not perforate the diaphragm of the
battery overfill protection.
The battery is filled to the maximum
level when the w ater level in the
cell filling chamber stops going
down.
If battery acid is to be extracted for
battery diagnosis purposes, per­
forate the diaphragm with the
hydrom eter or the tube attached
to it.
Coat battery term inal clamps with
acidproof grease. Keep battery
clean and dry.

Electrical System

Only tow vehicle with the battery
connected.
Only charge battery with the rapid
charger when it is disconnected
from the vehicle circuit.
Note:
While the engine is running the
battery term inal clamps must not be
loosened or detached as otherwise
the alternator and other electronic
units would be damaged.

Spark Plugs

This vehicle is equipped with spark
plugs as required for driving in the
USA. Should additional inform ation
be necessary, your MERCEDES-
BENZ dealer w ill be happy to offer
advice.