2011-2017 Porsche Cayenne SUV Minor Repairs -> External Power Supply, Emergency Starting with Jumper Cables User Manual
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Minor Repairs -> External Power Supply, Emergency Starting with Jumper Cables for Your Porsche Cayenne SUV Second Generation (2011-2017)

292 Minor Repairs
Putting vehicle into operation
After the battery is connected or after a fully
discharged battery is charged, the PSM warning
light lights up on the instrument panel and
a message appears on the multi-purpose display
of the instrument panel to indicate a fault.
This fault can be corrected with a few simple
steps:
1. Start the engine.
To do this, turn the ignition key or the control
unit (on vehicles with Porsche Entry & Drive) to
ignition lock position 2 twice.
2. With the vehicle stationary, perform a few
steering movements to the left and right and
then drive a short distance in a straight line
until the PSM warning light goes out and the
message is erased from the multi-purpose
display of the instrument panel.
3. If the warnings do not disappear, then:
Drive carefully to the nearest authorized
Porsche dealer and have the fault corrected.
4. After the warnings go out:
Stop the vehicle in a suitable place.
5. Store the end position for the power windows.
To do this:
Please see the chapter “STORING END
POSITION OF THE DOOR WINDOWS AFTER
CONNECTING THE VEHICLE BATTERY” on
page 82.
6. Teach tires on vehicles with Tire Pressure
Monitoring. To do this:
Please see the chapter “TIRE PRESSURE
MONITORING (TPM)” on page 119.
7. Store end position on vehicles with a sliding/
lifting roof. To do this:
Please see the chapter “STORING END
POSITION OF THE SLIDING/LIFTING ROOF” on
page 84.
Store end position on vehicles with
a Panorama roof system. To do this:
Please see the chapter “STORING END
POSITION OF THE PANORAMA ROOF SYSTEM”
on page 86.
External Power Supply, Emergency
Starting with Jumper Cables
If the battery is flat, the battery of another vehicle
can be used for starting or as an external power
supply with the help of jumper cables.
Both batteries must be 12 V batteries.
The capacity (Ampere hour, Ah) of the donor
battery must not be substantially less than that of
the flat battery.
The flat battery must be connected correctly to
the vehicle’s electrical system.
f Please see the chapter “BATTERY” on
page 290.
f Use only standard jumper cables with sufficient
cross section and completely insulated
alligator clips. Follow the instructions provided
by the jumper cable manufacturer.
f Route the jumper cables so that they cannot
be caught by moving parts in the engine
compartment.
The jumper cables must be long enough so
that neither vehicles nor cables touch another.
f The vehicles must not touch, otherwise current
might flow as soon as the positive terminals
are connected.
f Ensure that tools or conductive jewelry (rings,
chains, watch straps) do not come into contact
with the positive jumper cable, the positive
battery post or live parts of the vehicle.
f Improper hook-up of jumper cables can ruin
the alternator.
Jumper Cable Hazards
WARNING
h
Minor Repairs 293
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.
External power supply/emergency
starting with jumper cables
Always observe the sequence below:
1. Open the cap on the positive terminal for jump
starting (+).
2. Attach the positive lead first to the positive
terminal for jump starting (+), then to the
positive terminal of the donor battery.
3. Connect the negative lead first to the negative
terminal of the donor battery, then to the
ground point for jump starting (–).
+ = Positive terminal for jump starting
– = Ground point for jump starting
4. Leave the engine of the donor vehicle running
at a higher engine speed.
5. Start the engine.
An attempted start using jumper cables should
not last more than 15 seconds. Then wait for
at least one minute.
6. Disconnect the negative jumper cable from the
ground point for jump starting (–) first, then
from the negative terminal of the donor
battery.
7. Disconnect the positive jumper cable from the
positive terminal of the donor battery first,
then from the positive terminal for jump
starting (+).
8. Close the cap on the positive terminal for jump
starting (+).
Charging the battery
Automotive batteries loose 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.
f Charge battery in a well ventilated area due to
hydrogen gas explosion risk.
f Never charge a frozen battery. It may explode
because of gas trapped in the ice. Allow a
frozen battery to thaw out first.
f If you get electrolyte, which is an acid, in your
eyes or on your skin, immediately rinse with
cold water for several minutes.
Battery Acid Leakage
Battery Charging and
Jumping Hazards
WARNING
h
DANGER
h
Battery Explosion
Hazards
Eye or Skin Contact
DANGER
h
CAUTION
h

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