Emergency Starting - Porsche 928 S 1986 Driver Manual

Emergency Starting

(Terminals in engine compartment)
Should the engine not start because the bat-
tery is flat e. g. in winter or after the vehicle has
stood for a long period, the battery from an-
other vehicle can be used with the aid of a
jump cable. The following points should be
observed:
1. Both batteries must be 12 volt. The capacity
(Ah) of the battery supplying current should
not be significantly below that of the dis-
charged battery.
2. Only jump cables of adequate diameter
should be used. Observe manufacturer's
specifications.
3. A discharged battery can freeze at -10°C.
A frozen battery must be thawed out before
connecting the jump cables.
4. There should be no contact between the
two vehicles. Otherwise current may flow
when the positive terminals are connected.
5. The discharged battery must be correctly
connected to the vehicle electrical system.
6. Run the engine of the vehicle supplying the
current.
7. Connect the jump leads in the following
order:
First fix one end of the (+) lead to the (+)
clamp on the right at the front of the en-
gine compartment (arrowed). Then con-
nect the other end of the lead to the (+)
terminal of the feed battery.
Now clamp one end of the (—) lead to the
(—) terminal of the feed battery, then at-
tach the other end to the cylinder block
or the transverse strut in the engine com-
partment (arrowed).
Care should be taken that the cables do
not make contact with each other and that
the positive cable does not come into con-
tact with other electrical terminals - danger
of short circuit!
8. Start engine as described in the section
"Starting the engine".
9. When the engine is running disconnect the
cables in the reverse order.
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