2002-2010 Porsche Cayenne SUV Minor repairs -> Battery User Manual
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Minor repairs -> Battery for Your Porsche Cayenne SUV First Generation (2002-2010)

332 Minor Repairs
Battery
Danger!
Danger of explosion and injury and risk of
short circuit and damage to the generator
and electronic control units.
f Have the battery removed and installed only at
a specialist workshop.
The battery is located in the battery box under the
left front seat.
Warning!
Risk of short circuit and fire.
f Disconnect the battery during all work on the
electrical system.
f Ensure that tools or conductive jewellery
(rings, chains, watch straps) do not come into
contact with live parts of the vehicle.
Danger of explosion
f Do not wipe battery with a dry cloth.
f Before touching the battery, discharge any
static electricity by touching the vehicle.
Heed warnings on the battery
Read the operating instructions
Wear eye protection
Keep children away
Danger of explosion
While the battery is being charged, a
highly explosive gas mixture is formed,
so:
Fire, sparks, naked flames and
smoking are prohibited
Avoid causing sparks and short circuits
when handling cables and electrical
equipment.
In the case of batteries with central
venting, there is a greater concentration
of explosive gas at the hose opening. The
gas-venting hose must not be kinked or
blocked with dirt.
Danger of caustic burns
Battery acid is highly caustic, so:
Wear safety gloves and eye protection.
Do not tip the battery, or acid may spill
from the venting aperture.
First aid
If acid splashes into an eye, immediately
rinse with clean water for a few minutes.
See a doctor immediately.
If acid splashes onto skin or clothing,
neutralise immediately with soapsuds and
rinse with plenty of water.
If you accidentally drink acid, consult a
doctor immediately.
Disposal
Hand in the old battery at a battery
collection point.
Never dispose of an old battery with
domestic waste.
Minor Repairs 333
Charge state
A well-charged battery prevents starting problems
and has a longer service life.
Traffic density, speed limits, requirements
regarding noise, exhaust gas and fuel consump-
tion reduce the engine speed and, hence, the
generator output.
However, the large number of electrical loads has
markedly increased the demand for electrical
power.
In order to avoid unintended battery
discharge:
f Switch off unnecessary electrical loads in city
traffic, on short trips and in queues.
f Always withdraw the ignition key when leaving
the vehicle or
switch ignition off on vehicles that have
Porsche Entry & Drive.
f Avoid using the Porsche Communication
Management system and the audio system
when the engine is not running.
f For information on charging an exhausted
battery: Please observe the chapter
“CHARGING THE BATTERY” on Page 337.
Maintenance note
In the cold season in particular, it may become
necessary to recharge the battery from time to
time.
Battery care
f Keep battery surface clean and dry.
f Ensure that cell plugs and terminal clamps are
firmly secured.
Checking acid level
(only on low-maintenance batteries)
Check the acid level more frequently in the
summer months and in predominantly warm
countries.
f When topping up, use only clean vessels. In no
case may alcohol (e.g. window cleaner
residues) be permitted to enter the battery.
f Unscrew all plugs.
With the vehicle horizontal, the battery acid
must fill each cell up to the filler mark. These
filler marks are visible through the plug
openings as steps or lateral lugs in the battery.
f Top up with distilled water if necessary.
Do not use acid. Do not overfill.
Winter driving
The ability of the battery to deliver power
decreases at low outside temperatures.
Moreover, the battery is more heavily loaded in the
winter months by the heated rear window, more
frequent use of additional lights, the blower and
the windscreen wipers, etc.
f Have the charge state of the battery checked
before winter begins.
Maintenance note
Keep the battery fully charged to prevent it from
freezing.
A discharged battery can freeze even at –10 °C,
but a fully charged one only freezes at –40 °C.
334 Minor Repairs
Laying up the vehicle
If the vehicle stands for long periods in the garage
or workshop, the doors and lids should be closed.
f Withdraw the ignition key and, if necessary,
disconnect the battery.
Notes on operation
f When the battery is disconnected, the alarm
system ceases to function.
If the vehicle was locked before the battery
was disconnected, the alarm will be triggered
when the battery is reconnected.
To deactivate the alarm system:
f Lock the vehicle and unlock it again.
Alarm system, central locking
f The status of the central locking and alarm
system is not changed by disconnecting the
battery.
Maintenance notes
Even if you put your vehicle out of operation, the
battery still discharges.
f To preserve its operating capability, charge the
battery about every 6 weeks.
f Check the battery acid level and top up with
distilled water if necessary.
f Store a battery that has been removed in a
dark, cool place, but not subject to frost.
Replacing the battery
The battery is subject to normal wear: its service
life depends greatly on the care you give it,
climatic conditions and the conditions of use
(distances, loads).
It is not possible to use the details on the battery
case to determine a comparable battery that
meets all the specific requirements of Porsche.
f Only replace the battery with one that satisfies
the specific requirements of your vehicle.
We recommend that you use a genuine
Porsche battery.
f Please observe the disposal instructions for
batteries.
Putting vehicle into operation
After the battery is connected or after an exhaus-
tively 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 remedied 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 qualified
specialist workshop.
Have the fault remedied.
4. After the warnings disappear:
Stop the vehicle in a suitable place.
5. Perform teaching of the power windows. To do
this:
Please observe the chapter “STORING FINAL
POSITION OF THE DOOR WINDOWS AFTER
CONNECTING THE VEHICLE BATTERY” on
Page 91.
6. Teach tyres on vehicles with Tyre Pressure
Monitoring. To do this:
Please observe the chapter “SETTING TYRE
PRESSURE MONITORING” on Page 135.
7. Store end positions on vehicles with electri-
cally folding trailer coupling. To do this:
Please observe the chapter “STORING END
POSITIONS OF THE TRAILER COUPLING” on
Page 252.
8. Store end position on vehicles with Panorama
roof system. To do this:
Please observe the chapter “STORING FINAL
POSITION OF THE PANORAMA ROOF SYSTEM”
on Page 100.

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