2005 SAAB 9-5 fuel pressure

4Exterior
IB1736
Driving with a roof rack load______ 166
Fitting the roof carriers, 9-5 Sedan
and 9-5 Wagon without roof rails _ 166
Maximum roof load ____________ 252
Rearview mirror _______________ 108
Hood _______________________ 182
Engine compartment: washing ___ 238
Central locking __________ 38
Trunk lid lock, 9-5 Sedan __ 42
Tailgate, 9-5 SportWagon __ 43
Child safety locks ________ 41
Car alarm ______________ 44Headlights _____________ 67
High/low beam __________ 67
Turn signal and lane change
indicators______________ 69
Headlight washers _______ 71
Changing bulbs _________ 197
Fuel gauge___________________ 59
Refueling ____________________ 138
Economical motoring ___________ 157
Fuel ________________________ 254
b Tires pressure ________________ 261
Wheels and tires ______________ 260
Braking______________________ 152
Driving in cold weather__________ 159
Compact spare tire_____________ 230
Changing a wheel _____________ 231
Trunk _______________________ 121
Folding the rear seat, 9-5 Sedan __ 121
Folding the rear seat,
9-5 SportWagon ______________ 124
Trunk Release Handle __________ 130
Spare wheel and tools __________ 170
Compact spare tire ____________ 230Towing a trailer __________ 161
Towing the car ___________ 171
Rear towing eye _________ 172Headlights ______________ 67
Rear light cluster, 9-5 Sedan 203
Rear lights clusters,
9-5 SportWagon_________ 206
Changing bulbs __________ 197Sunroof ________________ 114
Washing the car _________ 237
Waxing and polishing _____ 238
Touching up the paint _____ 238
Anti-corrosion treatment ___ 240
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9
No sparks, fla-
mes or smo-
king.Buckle up
Use protective
gogglesAirbag
Keep out of
reach of
children.Never place a
rear-facing
child seat in
this seat.
Battery acid
contains
sulfuric acid.Electric
windows
Refer to the
Owner’s
Manual.Deactivating
of rear window
switches
Risk of
explosive gas.Central
locking, lock
.Central
locking,
unlock
Tr u n k
lid/tailgate,
opening
HeadlightsWindshield
wipers
Direction
indicatorsWindshield
washers
Parking lights Defroster
Hazard
warning lightsRear window
heating
Front fog
lightsVentilation fan
Rear fog
light
Coolant
temperatureRadiator fan
Battery
chargingFuel
Foot brake
Coolant level
Engine oil
pressure
ABS brakes
Examples of symbols that can be found in your car
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52 Instruments and controls
Indicator and warning
lights A number of indicator and warning lights will
come on when the ignition is switched on
prior to starting. Under normal conditions,
these should go out a few seconds after the
engine has started (see page 58).
This light will come on and a chime will
sound if a fault has been detected in any
system that is critical to safety. Any of the
following can activate the central warning
light and alarm:
 Airbag system.
 Low oil pressure in engine.
 Parking brake is on (when car is moving).
 Brake fluid level low.
 Fault detected in ABS system.
 Electronic brake force distribution (distri-
bution of brake pressure between front
and rear wheels).
 Engine overheating.
 Alternator not charging properly.
Central warning light
Main instrument panel 1 Tachometer
2 Indicator and warning lights
3 Speedometer
4 Indicator and warning lights
5 Pressure gauge6 Fuel gauge
7 Engine temperature gauge
8 Trip meter reset button
9 Odometer and trip meter
U.S. shown, Canada similar
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58 Instruments and controlsAutochecking of lights,
main instrument panel The above warning and indicator lights
should come on when the ignition is swit-
ched on prior to starting. They should go out
after about 3 seconds.
The following lights light up until the engine
is started, presuming that no fault exists:
 Central warning light .
 Oil pressure warning light .
 Warning, charging .
InstrumentsTachometerThe tachometer indicates the engine speed
in thousands of revolutions per minute. The
needle may be allowed to enter the broken
red zone on the dial only for an instant.
A safety cut-out function (in the fuel system)
prevents the engine speed from exceeding
approximately 6,000 rpm.
Odometer and trip meter The odometer records the distance traveled
in miles on U.S. vehicles and on Canadian
vehicles the distance indicated is in kilome-
tres, and the trip meter in miles and tenths
(kilometres and tenths of kilometres on
Canadian vehicles). Reset button The reset button has two functions, determi-
ned by whether the ignition is ON or OFF.
 When the ignition is ON, pressing the
button will reset the trip meter.
 When the ignition is OFF, the display
lights up for 20 seconds enabling you to
read the odometer and trip meter. Pres-
sing the button a second time within these
20 seconds will reset the trip meter.
IB1922
IB340
IB341
1 Cars with automatic transmission
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135 Starting and driving
Useful tips on cold climate
startingIf the engine has failed to start after several
attempts in very cold weather, press and
hold the accelerator down to the floor and
run the starter for 5–10 seconds. This will
prevent the engine being flooded (exces-
sively rich fuel-air mixture).
Now start the engine in the normal way – do
not touch the accelerator.
If the engine stalls immediately after starting
(e.g. if the clutch was released too quickly),
do not touch the accelerator when restarting
the engine.
Limp-home modeThe engine management system has a
diagnostic feature that continually checks a
number of internal functions. If, for example,
a fault is detected in the throttle valve, the
engine management system will go into
Limp-home mode.This limits idling control,
disables the cruise-control system and
limits the capacity of the A/C compressor.
If the limp-home mode is in operation
(”Engine malfunction (CHECK ENGINE)”
light on, see below) and the outside temper-
ature is close to or below freezing, you may
need to use some throttle on starting (some
pressure on the accelerator).
If the diagnostic system has detected a fault
in the engine-management system, the
”Engine malfunction (CHECK ENGINE)”
light on the main instrument panel will
come on (see page 55), indicating that you
should have the car checked as soon as
possible by an authorized Saab dealer.
NOTICEIf the CHECK ENGINE warning light
starts to flash, ease off the accelerator
slightly. If the light does not cease to flash
within 5 seconds, stop the car in a suita-
ble place as soon as possible and turn off
the engine. The car must be towed to an
authorized Saab dealer.
If the CHECK ENGINE warning light flas-
hes, it indicates that the engine is misfi-
ring which can result in damage to the
catalytic converter.
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136 Starting and drivingImportant
considerations for
drivingThe engine-management system in the
Saab 9-5 is called Saab Trionic T7. The
system manages the ignition, fuel injection
and turbo boost pressure.
The Trionic T7 system developed by Saab
is an intelligent engine-management
system designed to achieve optimum driv-
ability under differing driving conditions.
The system makes adjustments automati-
cally, for instance, if the car is being driven
at altitude (oxygen-deficient air), for differ-
ent grades of fuel (AON 87–93) and for dif-
ferent load conditions.
1 Starting and driving
 Refrain from using full throttle before
the engine has warmed up (before
needle in mid-range on temperature
gauge).
 A safety function prevents the engine
from revving faster than 6,000 rpm by
limiting the induction air.
2 Stopping the engine
 Do not rev the engine immediately
before switching it off – stop the engine
when it is idling.
3 Regulating the boost pressure
 One of the advantages of boost pres-
sure regulation is that the engine can
also be run safely on gasoline with a
lower octane rating, although not lower than AON 87. However, engine perfor-
mance will fall slightly and heavy load-
ing and laboring should be avoided. For
optimum performance, use the recom-
mended grade of fuel.
 The maximum boost pressure is adjus-
ted automatically to the knocking or
pinging tendency of the engine. Occa-
sional, short-lived knocking when the
engine is under a heavy load is per-
fectly normal; the extent will depend on
the grade of fuel in the tank.
 Isolated instances of knocking are
more likely to occur with low-octane
fuel. This controlled form of knocking,
followed by a reduction in the boost
pressure, is a sign that the wastegate is
functioning and is perfectly safe for the
engine.

NOTICE If the engine sounds strange there is a
fault in the system. Have the car
checked without delay by an authori-
zed Saab dealer.
 The use of fuel with too low an octane
rating can cause serious engine
damage.
WARNING
If the engine is being run with the car on a
rolling road or dynamometer, longer than
for a standard state emission inspection,
to ensure adequate cooling, air must be
blown into the engine compartment and
under the car at a rate equivalent to the
ram-air effect that would be obtained at
the corresponding road speed.
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158 Starting and drivingDriving technique To obtain the best running economy, not
only regarding fuel consumption but
general wear also, regular service is
required.
 High speed, unnecessary acceleration,
heavy braking and much low gear work all
gives rise to higher fuel consumption.
 Frequent gear changing in traffic, starting
in cold weather, the use of studded tires
and roof racks, and towing a trailer all
increase fuel consumption.
 Do not run the engine when the car is sta-
tionary.
If idling, it will take much longer before the
engine becomes hot. Engine wear is gre-
atest during this warming-up phase. The-
refore drive away as soon as possible
after the engine is started and avoid high
revving. Driving in a low gear results in higher fuel
consumption than in a high gear because
of the higher engine speed for a given
road speed. Always change up to a higher
gear as soon as traffic conditions allow
and use the highest gear as much as pos-
sible.
 Check the air pressure in the tires once a
month. Incorrect pressures increase tire
wear. It is better to have slightly higher
pressure than lower.
 Check fuel consumption regularly.
Increased consumption can indicate that
something is wrong and that the car
needs to be checked by an authorized
Saab dealer.
Practical trials on the roads have demon-
strated that substantial savings in fuel con-
sumption can be made if the above advice
is heeded.
Road conditionsWet roads increase fuel consumption, as do
unpaved roads and driving in hilly country
(the amount of fuel saved driving downhill is
less than the additional amount required to
climb the hill).
WARNING
Never switch the engine off while driving
as the effect of the brakes and power ste-
ering will be greatly reduced.
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169 Starting and driving
Tires
The tire pressure should match the current
load and speed of the car; for cars sold in
U.S. see page 226; for cars sold in Canada
see page 261.
The tire pressures given apply to
cold
tires,
that is tires that are the same temperature
as the outside air temperature.
The tire pressure increases as the tires
become warm (e.g. during highway driving)
with approximately 0.3 bar (4 psi). When
the temperature of the tires changes by 50°
(10°C), the tire pressure will change 0.1 bar
(2 psi).Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
Underinflated tires wear more quickly than
slightly overinflated tires.
If a valve is leaking, simply unscrew it and fit
a new one.
Important!
Remember to adjust the tire
pressures if you change the load in the car
or intend to drive at substantially lower or
higher speeds than normal.
WARNING
Check the tire pressure
at least once a
month
and before long journeys. Under-
inflation can result in:
 Punctures
 Separation of the tire and tread
 Damage to the sidewalls
 Damage to the rims on poor roads
 Poor handling characteristics
 Premature tire wear
 Increased fuel consumption.
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