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208 Minor Repairs
f Do not lean over the battery due to danger of
chemical burns from leaking acid.
f Improper use of booster battery to start a
vehicle may cause an explosion.
f Keep sources of ignition away from the
battery, e.g. naked flame, burning cigarettes
or sparks due to cable contact.
f Before connecting jumper cables, it is
essential to thaw out a frozen battery.
Risk of damage due to short circuit.
f Never connect jumper cables directly to the
battery. Always connect jumper cables to the
emergency starting terminals in the luggage
compartment.
+ = Battery positive terminal A
– = Ground point for external power supply/emergency
starting B
Supplying external power/
Performing emergency starting with
jumper cables
Always observe the sequence below:
1. Remove cover in front luggage compartment.
To remove the cover:
Please see the chapter “TIRE FILLING
COMPRESSOR” on page 148.
2. Connect the positive lead (red) to the positive
terminal A of the discharged battery first, then
connect it to the positive terminal of the donor
battery.
3. Connect the negative lead (black) first to the
negative terminal of the donor battery, then to
the ground point B.
4. Leave the engine of the donor vehicle running
at a higher engine speed.
5. Start the engine.
An attempted start using jump leads should
not last more than 15 seconds. Then wait for
at least one minute.
6. With engine running:
Disconnect the negative lead from the ground
point B first, then from the negative terminal of
the donor battery.
7. With engine running:
Disconnect the positive lead from the positive
terminal of the donor battery first, then from
the positive terminal A of the discharged
battery.
Charging the battery
Automotive batteries lose their efficiency when
not in use. The charge available in your battery can
be measured with a battery hydrometer. We
recommend that the battery voltage be tested by
your authorized Porsche dealer who has the
appropriate equipment.
If the car is not driven for prolonged periods, the
battery must be charged at least every 6 weeks.
A discharged battery allows rapid formation of
sulfates, leading to premature deterioration of the
plates.
Battery acid leakage
Battery char
ging and
jumping hazards
WARNING
h
DANGER
h
NOTICE
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