2006 PORSCHE 911 CARRERA Owners Manual

Practical Tips, Emergency Service
249
SpacersfUse the spacers only together with wheels and
fastening parts approved by Porsche.
Before having spacers fitted, find out about the
current approval status.911 Carrera 4, 911 Carrera 4S
Danger!
Risk of accident.
17 mm spacers must only be mounted on the
rear axle together with 11.5 J x 19 (67 mm
rim offset) wheels.
fAlways remove 17 mm spacers before
mounting other wheel sizes or an emergency
spare wheel because the wheel cannot be mounted correctly.
911 Carrera, 911 Carrera SMounting an emergency spare wheel
If 5 mm spacers are mounted, these must not be
removed to mount an emergency spare wheel.
Fitting snow chains
The use of snow chains is not permitted when
5 mm spacers are mounted.
Caution!
Risk of damage to the wheel housings if the
5 mm spacers are not removed before fitting
snow chains.
fTo permit the fitting of snow chains, have the 5 mm spacers removed on all 4 wheels.Note on operation
fTo fit/remove the spacers:
Please consult an authorized Porsche dealer.
fPlease observe the chapter “17 MM
SPACERS” on Page 252.
Please observe the chapter “5 MM SPACERS”
on Page 253.

250
Practical Tips, Emergency Service
Changing a wheel
Warning!
Risk of injury. The car may slip off the jack.
fMake sure that no one is in the vehicle when
jacking up and changing a wheel.
fAlways place the car on stable supports if work
has to be carried out under the car.
Risk of damage to the brake discs of the
Porsche Ceramic Composite Brake (PCCB).
fAlways screw in both assembly aids when changing a wheel.
Note
The tools required for changing a wheel (e.g. jack,
wheel bolt wrench, assembly aids) are not sup-
plied with the car.
Your authorized Porsche dealer will be pleased to
advise you.1. Fully apply the handbrake, engage 1st gear or
select position P and withdraw the ignition key.
2. Secure the car against rolling away, e.g. by
means of wedges under the wheels on the op-
posite side.
This is particularly important on slopes.
3. Slightly slacken the wheel bolts of the wheel to
be changed.
4. Raise the car until the wheel lifts off the
ground.
fPlease observe the chapter “LIFTING THE VE-
HICLE WITH A LIFTING PLATFORM OR GARAGE
LIFT” on Page 244.
Screw in assembly aid for vehicles without Porsche
Ceramic Composite Brake5. Remove 1 or 2 wheel bolts (see respective
illustration). Screw in assembly aids instead of
the wheel bolts.
Remove the remaining wheel bolts.
Note on operation
fTo remove or mount the spacers:
Please observe the chapter “17 MM
SPACERS” on Page 252.
Please observe the chapter “5 MM SPACERS”
on Page 253.

Practical Tips, Emergency Service
251
Screw in two assembly aids for vehicles with Porsche
Ceramic Composite Brake6. Take the wheel off and put a new wheel on.
7. Please observe the chapter “WHEEL BOLTS”
on Page 248.
Screw in wheel bolts; remove assembly aids
and screw in the remaining wheel bolts. Initially
tighten bolts in diagonally opposite sequence
so that the wheel is centered.8. Lower the car completely.
9. Tighten wheel bolts in diagonally opposite
sequence.
Immediately after changing a wheel, use a
torque wrench to check the prescribed
tightening torque (130 Nm/96 ftlb.).
Checking tire pressure with a
pressure gauge1. Remove the valve stem cap from the tire.
2. Press the pressure gauge onto the valve stem.
Note on operation
fDo not press too hard or force the valve stem
sideways, or air will escape.
If the sound of air escaping from the tire is
heard, reposition the pressure gauge.
3. Read the tire pressure on the gauge stem and
compare it to the permissble tire pressure.
This information can be found on the tire pres-
sure plate or in the chapter Technical Data.
Please observe the chapter “TIRE PRESSURES
FOR COLD TIRES” on Page 290.
4. Remove the pressure gauge.
fPlease observe the chapter “TPC TIRE PRES-
SURE MONITORING” on Page 109.

252
Practical Tips, Emergency Service
17 mm spacers
911 Carrera 4, 911 Carrera 4S
Danger!
Risk of accident.
17 mm spacers must only be mounted on the
rear axle together with 11.5 J x 19 (67 mm
rim offset) wheels.
fAlways remove 17 mm spacers before
mounting other wheel sizes or an emergency
spare wheel because the wheel cannot be mounted correctly.
fFor information on the spacers: Please
observe the chapter “SPACERS” on Page 249.
Removing the spacers
1. Unscrew the wheel bolts A with which the
spacer is fastened.
2. Remove the spacer.
3. Screw in 1 or 2 assembly aids instead of the
wheel bolts.
4. Fit wheel. 5. Please observe the chapter “WHEEL BOLTS”
on Page 248.
Insert wheel bolts A and tighten by hand.
Remove assembly aids, screw in remaining
wheel bolts.
Initially tighten bolts slightly in diagonally
opposite sequence so that the wheel is
centred.
6. Lower the car completely.
7. Tighten wheel bolts in diagonally opposite
sequence.
Immediately after changing a wheel, use
a torque wrench to check the prescribed
tightening torque of the wheel bolts
(130 Nm/96 ftlb.).fStore spacer and wheel nuts together.
Mounting the spacers
1. Remove wheel.
2. Fit the spacer with the wheel bolts A used to
fasten the wheel.
Initially tighten the wheel bolts slightly in
diagonally opposite sequence.
3. Tighten wheel bolts in diagonally opposite
sequence.
Tightening torque: 130 Nm (96 ftlb.).
4. Fit wheel.
To d o t h i s use the original wheel nuts for
fastening the wheels.
Tightening torque: 130 Nm (96 ftlb.).
fPlease observe the chapter “CHANGING A
WHEEL” on Page 250.
On request, separate anti-theft protection for the
wheel nuts can be mounted.
fPlease consult an authorized Porsche dealer.

Practical Tips, Emergency Service
253
5 mm spacers
911 Carrera, 911 Carrera SMounting an emergency spare wheel
If 5 mm spacers are mounted, these must not be
removed to mount an emergency spare wheel.
Fitting snow chains
The use of snow chains is not permitted when
5 mm spacers are mounted.
Caution!
Risk of damage to the wheel housings if the
5 mm spacers are not removed before fitting
snow chains.
f To permit the fitting of snow chains, have the 5 mm spacers removed on all 4 wheels.
f To fit/remove the spacers:
Please consult an authorized Porsche dealer. Removing the spacers
1. Unscrew both countersunk screws (M6x16) on
the wheel hub.
2. Remove the spacer.
3. Fasten the brake disc with the short M6x12
countersunk screws, part No.:
900.269.047.09.
Tightening torque 10 Nm (7.5 ftlb.) .
4. For wheel mounting without a spacer, 5 mm
shorter wheel bolts (part No.:
996.361.203.02) must be used.
Tightening torque: 130 Nm (96 ftlb.) .f
Please observe the chapter “CHANGING A
WHEEL” on Page 250.
Required scope of parts if the spacers are
removed
Short countersunk screws (M6x12)
Part No: 900.269.047.09
1 set short wheel bolts
Part No: 996.361.203.02
Short anti-theft protection
Part No: 996.361.057.01
f For information on the spacers: Please ob-
serve the chapter “SPACERS” on Page 249.
f f f

254
Practical Tips, Emergency Service
Long wheel bolt
X - bolt length approx. 50 mm
Arrows - marksWheel bolt identifying features
The long wheel bolts are identified on the face
surface of the bolt head with GT or in red, or the
moveable spherical cap ring is galvanised in red.
The long wheel bolts must only be used together
with 5 mm spacers fitted.
The short wheel bolts are not marked in colour.
The short wheel bolts must only be used without
5 mm spacers fitted.
Tightening torque for both wheel bolts:
130 Nm (96 ftlb.).
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.
Replacing fuses or relays with the engine
running or the ignition on could cause elec-
trical shock.
fDisconnect the battery during all work on the
electrical system.
Please observe the chapter “BATTERY” on Page 258.
Relays Defective 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.

Practical Tips, Emergency Service
255
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
discharged.
Do not operate additional accessories for more
than 5 minutes when engine is off.
Maximum power consumption for both
sockets together: 70 W.
fPlease observe the power specifications from
the accessory manufacturer.
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 sys-
tem ceases to function. 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 and
radio) are automatically switched off after approx.
2hours.
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.

256
Practical Tips, Emergency Service
A - Diagnostic socket Replacing fuses In order to prevent damage to the electrical sys-
tem due to short circuits and overloads, the indi-
vidual circuits are protected by fuses.
The fuse box is located in the driver’s footwell.
A - Plastic gripper
B - Spare fuses
1. Switch off the load with the defective fuse.
2. Pull off plastic cover at the finger hole (arrow).
The fuse plan and instructions for
emergency unlocking of the luggage
compartment lid can be found on the inner
side of the cover.
3. Remove the corresponding fuse from its slot
using the plastic gripper A in order to check it.
A blown fuse can be identified by the melted
metal strip.
4. Replace only with fuses of the same rating.
Note
fIf a fuse blows repeatedly consult an author-
ized Porsche dealer.
fNever try to “repair” fuses: you may cause se-
rious damage to other parts of the electrical
system.