Porsche 911 Carrera - Manual (Page 299)

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
capacity before winter sets in.
The battery will discharge more quickly if your
vehicle is not driven on a daily basis over a distance
of several miles. The more often you drive your
vehicle, and the longer the distance driven on each
trip, the more opportunity the vehicle’s charging
system will have to recharge the batteries.
Replacing battery
The service life of the battery is subject to normal
wear; it depends greatly on care, climatic condi-
tions, and driving conditions (distances, loads).
Only use an original Porsche battery, with the
correct part number, as a replacement.
Please observe the disposal instructions for
batteries.
Putting vehicle into operation
After the battery is connected or after an com-
pletely discharged battery is charged, the mul-
tifunctional PSM light lights up on the instrument
panel and a message appears on the on-board
computer to indicate a fault.
This fault can be remedied with a few simple steps:
1. Start the engine.
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 multifunctinal PSM light goes out
and the message on the on-board computer
disappears.
3. If the warnings do not disappear, then: Drive
carefully to the nearest authorized Porsche
dealer. Have the fault remedied.
4. After the warnings disappear: Stop the vehicle
in a suitable place.
5. Perform adaptation of the power windows:
Please observe the chapter ”STORING END
POSITION OF THE WINDOWS” on page 33.
Ignition key/ignition lock
Do not insert the ignition key into the ignition
lock if the vehicle battery is discharged. The
ignition key can no longer be removed.
The key cannot be removed until the vehicle
electrical system is supplied with power again.
Please observe the chapter ”EMERGENCY
UNLOCKING OF THE LUGGAGE COMPART-
MENT LID” on page 294.
Please observe the chapter ”EMERGENCY
STARTING WITH JUMPER CABLES” on page
300.
Removing the battery
The required tool is in the tool kit.
The battery is located in the luggage compartment
under a black plastic lid.
Warning!
Risk of damage to alternator and electronic
control units.
Do not disconnect the battery while the engine
is running. This also applies to cars equipped
with a battery main switch.
Never drive the car with a disconnected
battery.
Warning!
Risk of caustic burns from escaping acid.
Keep vent caps on to avoid spillage.
Do not tilt the battery when removing and
installing it.
Practical Tips, Emergency Service
297