2009 PORSCHE 911 change key battery

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Operation, Safety
Stopping Engine fTurn key back to position 3.
fDo not stop engine immediately after hard or
extended driving.
Keep engine running at increased idle for
about two minutes to prevent excessive heat
build-up before turning off engine.
fTo avoid discharging the battery, always re-
move the ignition key from the ignition lock.
fWhen leaving the car, always remove the igni-
tion key and apply the handbrake. Engage 1st
gear or reverse gear on vehicles with manual
transmission or move the selector lever to po-
sition P on vehicles with PDK transmission.
fEngage the steering lock by moving the steer-
ing wheel to the left or right.
Turn the steering wheel to the locking position
before you switch off the engine so that you
don’t have to exert yourself when locking or
unlocking the steering.
Warning!
Danger of injury. Hot engine compartment
components can burn skin on contact.
fBefore working on any part in the engine com-
partment, turn the engine off and let it cool down sufficiently.
Engine-compartment blower,
radiator fan The radiator and radiator fans are in the front of
the car.
The engine-compartment blower is mounted on
the engine compartment lid.
Warning!
Risk of injury.
After the engine is switched off, the engine-
compartment temperature is monitored for
approx. 30 minutes.
During this period, and depending on tem-
perature, the engine-compartment blower
may continue to run or start to run.
fCarry out work in these areas only with the en-
gine off, the ignition off, and exercise extreme
caution.
Risk of injury. The radiator fans in the front
end of the car may be operating or
unexpectedly start operating when the
engine is switched on.
fCarry out work in these areas only with the en-gine switched off.
Automatic garage door The ignition system in your Porsche may interfere
with your electronically operated garage door.
fTo check this, drive your Porsche close to the
garage door. Make sure not to interfere with
the operating range of the door.
fRun the engine at different speeds.
fIf the garage door opens or closes without you
operating the garage door unit in your car,
contact the dealer who installed the automatic
garage door to have the frequency and/or
coding of the garage door signal changed or
modified.

Practical Tips, Emergency Service
257
Electrical System In order to avoid damage and faults in electrical or
electronic systems, electrical accessories should
be installed at your authorized Porsche dealer.
fOnly use accessories authorized by Porsche.
Warning!
Risk of short circuit and fire, resulting in
serious personal injury or death.
Replacing fuses or relays with the engine
running or the ignition on could cause elec-
trical shock.
fDisconnect the negative terminal on the
battery during all work on the electrical
system.
Please see the chapter “BATTERY” on Page 261.
RelaysDefective relays should be changed only by an
authorized workshop.
In storage tray between the front seatsSocketsElectrical accessories should preferably be
connected to the 12 V sockets.
fPlease observe the maximum power
consumption.
Note on operation
The tire filling compressor must be connected to
the cigarette lighter.
In the passenger’s footwellNote on operation
The sockets and thus the connected electrical
accessories function even if the ignition is
switched off or the ignition key is withdrawn.
If the engine is not running and the accessories
are switched on, the vehicle battery will be dis-
charged.
Do not operate additional accessories for more
than 5 minutes when engine is off. Continuing to
do so may drain the battery such that it may go
completely dead.
Maximum power consumption for both sock-
ets together: 70 W.

258
Practical Tips, Emergency Service
Alarm system, central lockingThe status of the central locking and alarm system
is not changed by disconnecting the battery.
When the battery is disconnected, the alarm
system ceases to function.Central locking overload protectionIf the central locking system is operated more
than ten times within a minute, further operation is
blocked for 30 seconds.
Load switch-off after 2 hours or 7 daysIf the ignition key is removed, loads which are
switched on or are in standby mode (such as the
luggage compartment light, interior light) are
automatically switched off after approx. 2hours.
The Radio/PCM is automatically switched off after
approx. 10 minutes.
If the vehicle is not started or unlocked with the
remote control within 7days, the remote control
standby function is switched off (to save the
vehicle battery).
1. In this case, unlock the driver’s door with the
key at the door lock.
Leave the door closed in order to prevent the
alarm system from being triggered.
2. Press button 1 on the remote control.
The remote control is now activated again.

266
Practical Tips, Emergency Service
Replacing the remote-control
battery The battery should be changed when the range of
the radio remote control becomes smaller or
when the light-emitting diode no longer flashes
when the remote control is operated.
1. Using your finger nail or a small screwdriver,
carefully lift off the cover of the key grip
(arrow).
2. Replace the battery (paying attention to the
polarity).
Replacement battery – Lithium CR 2032,
3volts.3. Replace the cover and press together firmly.
Please observe the disposal instructions for
batteries.
Note
fPlease dispose batteries in compliance with
any and all government regulations.