2005 PORSCHE CAYENNE S battery capacity

Practical Tips, Minor Repairs
321
Winter operationDuring the winter months, battery capacity tends
to decrease as temperatures drop. Additionally,
more power is consumed while starting, and the
headlights, heater, rear window defogger, etc.,
are used more frequently.
Let your Porsche dealer test the battery's capaci-
ty before winter sets in.Vehicle storageIf the car stands for long periods in the garage or
workshop, the doors and lids should be closed.
fRemove the ignition key and, if necessary, dis-
connect the battery.
Notes on operation
fWhen 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:
fLock the vehicle and unlock it again.Maintenance note
Even if you put your vehicle out of operation, the
battery still discharges.
The battery will discharge more quickly if your ve-
hicle is not driven on a daily basis over a distance
of several miles. The more often you drive your ve-
hicle, and the longer the distance driven on each
trip, the more opportunity the vehicle‘s charging
system will have to recharge the batteries.
fTo preserve its efficiency, charge the battery
about every 6 weeks.
fCheck the battery acid level and top off with
distilled water if necessary.
fStore a battery that has been removed in a
dark, cool place, but not subject to freezing.
Putting vehicle into operationAfter the battery is connected or charged, the
PSM warning light lights up on the instrument pan-
el 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 that have Porsche Entry &
Drive) to ignition lock position 2 twice.2. Perform a few steering movements and drive
a short distance in a straight line until the PSM
warning light goes out and the message is
erased from the memory of the multi-purpose
display of the instrument panel.
3. If the warnings does not go out, then:
Drive carefully to the nearest authorized
Porsche dealer.
Have the fault remedied by an authorized
Porsche dealer.
4. After the warnings disappear:
Stop the vehicle in a suitable place.
5. Perform adaptation of the power windows:
Please observe the chapter “STORING FINAL
POSITION OF THE DOOR WINDOWS” on
Page 31.
6. On vehicles with tire pressure monitoring sys-
tem:
Please observe the chapter “SYSTEM LEAR-
NING PHASE” on Page 89.
f f f

322
Practical Tips, Minor Repairs
Replacing the batteryThe service life of the battery is subject to normal
wear; it depends greatly on care, climatic condi-
tions, and driving conditions (distances, loads).
fOnly use an original Porsche battery, with the
correct part number, as a replacement. Only
this battery meets the specific requirements of
the vehicle.
fPlease observe the disposal instructions for
batteries.
Battery chargingAutomotive batteries loose their efficiency when
not in use. The charge available in your battery can
be measured with a battery hydrometer. We rec-
ommend that the battery voltage be tested by
your 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 sul-
fates, leading to premature deterioration of the
plates.
Danger!
Hydrogen gas generated by the battery
could cause an explosion, resulting in severe
personal injuries.
fCharge battery in a well ventilated area.
fNever charge a frozen battery. It may explode
because of gas trapped in the ice. Allow a fro-
zen battery to thaw out first.
fIf you get electrolyte, which is an acid, in your
eyes or on your skin, immediately rinse with
cold water for several minutes and call a doc-tor.
Note
Your authorized Porsche dealer will be pleased to
advise you about a suitable charger.Slow battery charging
1. Pay attention to all warnings and follow instruc-
tions that come with your battery charger.
2. When charging, ensure adequate ventilation.
3. Remove battery.
Please observe the chapter “REMOVING AND
INSTALLING BATTERY” on Page 323.
4. All vent caps should be open.The fluid level
should meet the indicator mark in each cell.
5. Ensure that charger is switched off – danger of
short circuit!
6. Connect charger cables.Charger cables must
be connected POSITIVE (+) to POSITIVE (+)
and NEGATIVE (–) to NEGATIVE (–).
7. Switch on charger. Normally, a battery should
be charged at no more than 10 percent of its
rated capacity. Rated capacity of the battery in
your vehicle is listed on the battery housing.
8. After charging, turn off charger and disconnect
charger cables.
9. Tighten the vent caps and reinstall battery.
Please observe the chapter “REMOVING AND
INSTALLING BATTERY” on Page 323.

Practical Tips, Minor Repairs
331
Emergency Starting with Jumper
CablesIf the battery is discharged, e.g. in winter or after
the car has been parked for a long time, the bat-
tery of another car can be used for starting with
the help of jumper cables.
Make sure the voltage of both batteries is the
same.
The capacity (Ampere hours, Ah) of the booster
battery must not be substantially less than that of
the discharged battery.The discharged battery
must be correctly connected to the vehicle's elec-
trical system.
fPlease observe the chapter “BATTERY” on
Page 320.
Note
Do not try to start the car by pushing or towing.
Damage to the catalytic converters and other
components of the car may result.
Danger!
Risk of damage and serious personal injury
due to short circuit.
fUse only jumper cables of adequate diameter
cross-section and fitted with completely insu-
lated alligator clips.
fFollow all warnings and instructions of the
jumper cable manufacturer.
fWhen connecting jumper cables, make sure
that they cannot get caught in any moving
parts in the engine compartment.
The jumper cables must be long enough so
that neither vehicles nor cables touch another.
fThe vehicles must not be in contact, otherwise
current might flow as soon as the positive ter-
minals are connected.
fThe cable clamps must not be allowed to con-
tact each other when one end of the jumper ca-
bles are connected to a battery.
fCarefully ensure that tools or conductive jewel-
ery (rings, chains, watch straps) do not come
into contact with the positive jumper cable or
the positive battery post.
fImproper hook-up of jumper cables can ruin
the alternator.
Danger of caustic burns.
fDo not lean over the battery.Danger of gas explosion.
fImproper use of booster battery to start a ve-
hicle may cause an explosion, resulting in se-
vere personal injuries.
fKeep sources of ignition away from the bat-
tery, e.g. open flame, burning cigarettes or
sparking due to cable contact or welding work.
fA discharged battery can freeze even at
14°F (10°C). Before connecting jumper ca-
bles, a frozen battery must be thawed out.

376
Index Te s t s t a n d s
Measurement ..................................... 226
Theft protection ............................................ 16
Through-load bag ........................................ 191
Securing load ..................................... 192
Through-load facility .................................... 191
Tie-down
Belts .................................................. 186
Equipment .......................................... 197
Rings ........................................ 186
,189
Tiptronic ...................................... 15
,52,203
Rocker switches .......................... 52,205
Tire
Care .................................................. 283
Checking pressure .............................. 303
Life .................................................... 282
Traction ............................................. 280
Wear .................................................. 282
Tire and rim sizes ....................................... 359
Tire pressure ....................................... 87,198
Load .................................................. 197
Plate .................................................. 355
Reducing ................................... 304,306
Specifications ..................................... 100
Tables................................................ 361
Warning light ........................ 70
,72,110
Warning message ................................. 95
Tire pressure monitoring system .................... 87
Monitoring ............................................ 94
System learning process ....................... 89
Tire sealant .................................. 91
,98,296
Warning light ...................................... 110
Tires .......................................................... 277
Changing............................................ 174Damage ............................................. 283
Flat .................................................... 295
Inflating ..................................... 303
,305
Inscription .......................................... 289
Replacing ........................................... 284
Sidewall.............................................. 289
Size ................................................... 289
Tracks ............................................... 358
Type .................................................... 91
Valves ................................................ 284
Tool kit ....................................................... 276
Screewdriver ...................................... 291
Tools.......................................................... 276
Screwdriver ........................................ 291
Towing .............................................. 210,350
Capacity ............................................. 195
Hook .................................................. 350
Tow-starting ................................................ 210
Tracks........................................................ 358
Traction...................................................... 230
Traction systems......................................... 217
Trailer
Coupling ............................................. 194
Hitch .................................................. 194
Hitching.............................................. 194
Unhitching .......................................... 194
Transmission ..................................... 202,357
Transport ............................................ 28,238
Turn signal light .......................................... 344
Indicator light ................................. 70,72
Rear................................................... 346
Switch ................................................ 119
Turn signal pilot light
Indicator light ................................. 70,72Turn signal/high beam/headlight flasher stalk 119
Tyre pressure
Warning message..................................95
UUltrasonic measurement ..............................165
Ultrasound sensors, ParkAssist ....................163
Ultrasound sources .....................................165
Undercoating ..............................................270
Unlocking, keyless ........................................24
Immobilizer ...........................................25
Uphill driving ...............................................230
Traction..............................................230VVehicle
Battery .............................174
,320
,333
Care...................................................265
Data bank ...........................................354
Identification number ...........................354
Keys ...........................................17,334
Laying up............................................274
Lowering ............................................238
Putting into operation ..........................321
Raising ...............................................237
Recovery ............................................352
Securing against rolling .......................295
Storage ..............................................321
Transport ....................................28,238
Washing .............................................266
Vehicle door
Locking .........................................20,24
Unlocking .............................................20