2004 SAAB 9-5 engine

147 Starting and driving
Starting and driving
IB1754
Ignition switch ________ 148
Starting the engine ____ 149
Important considerations
for driving ___________ 151
Refueling ____________ 154
Engine Break-In Period _ 157
Gear changing ________ 158
Cruise control ________ 167
Braking ______________ 168
Traction Control System 171
Electronic Stability
Program (ESP) _______ 172 Economical motoring __ 174
Driving in cold weather_ 176
Driving in hot weather _ 177
Towing a trailer _______ 178
Driving with a roof rack
load ________________ 183
Driving at night _______ 185
Driving with a load ____ 185
Driving considerations
with compact spare
wheel/tire fitted ______ 187 Driving with the trunk
lid/tailgate open ______ 188
Driving in deep water __ 188
Towing the car________ 188
Jump starting ________ 191
Saab Parking Assistance 194
Parking brake ________ 196
Parking ______________ 196
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148 Starting and drivingIgnition switchThe combined ignition switch and
gear-lever lock is located in the center con-
sole between the front seats. The ignition
key can only be removed when reverse is
engaged (automatic transmission: selector
in ”P” position).
The key fits all the locks on the car. The key
number is specified on the small plastic
strap that comes with the keys when the car
is delivered. Keep a note of the key number
in a safe place, as you will need to quote it if
ordering a replacement key.
See also page 40.
LOCK position Engage reverse and turn the key to LOCK.
Automatic transmission: select ”P”.
The gear lever is locked. This is the only position in which the key can be
removed.
The parking lights, hazard warning lights and interior lighting all work. OFF position Gear lever no longer locked.
Certain electrical circuits operationalON position All electrical circuits working. Do not leave the key in the ON position
when the engine is not running. Turn the key to OFF to switch off the
electrical circuits. In the ON position certain warning and indicator lights
come on as a check, and they normally are extinguished after about
3 seconds.ST (starter) position The starter operates when the key is turned to this position. When
released, the key will spring back to the ON position. If the engine fails to
start, the key must first be turned back to the position between OFF and
LOCK before the starter can be operated again.
When the starter motor is running, several electrical circuits are
disconnected to facilitate starting.
LOCK
OFFONST
LOCK
OFFONST
LOCK
OFFONST
LOCK
OFFONST
IB1120
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149 Starting and driving

If the car does not startIf the text ”Key not accepted. Contact ser-
vice.” is shown on the SID, after a failed start
attempt, the cause could be a fault in the
transmitter in the key, or in the receiver in
the ignition lock. The following should be
done:
 Turn the key back to the LOCK position.
 Turn the key to ON.
 Press one of the buttons on the remote
control (the LED stops blinking).
 Start the engine.
Try another key. If this works, then the fault
is in the first key.
Contact an authorized Saab dealer for
checking and rectification.
Note:
Certain electronic items, such as cellular
phones, may affect the starting produce-
dure. Be sure that all devices are clear of the
key/ignition switch area.
Starting the engine
NOTICETake care not to spill drinks or to drop
crumbs over the ignition switch. If dirt or
liquid gets into it, the switch may not
operate properly.
WARNING
 Always remove the key before leaving
the car.
 Always apply the parking brake before
removing the ignition key.
WARNING
 When starting the engine:
- Sit down in the driver’s seat.
- Depress the clutch pedal fully. If the
gear lever is not in the neutral posi-
tion, the clutch pedal must be fully
depressed or the car will jump for-
wards or backwards, which may
cause a crash.
- Never start the car from outside the
vehicle, e.g. through a wound down
window. This could lead to serious
personal injury.
 Engage reverse (R) (position P for
automatic transmission) to remove the
ignition key. The key can only be
removed in this gear position.
 Carbon monoxide (CO) is a colorless,
odorless, poisonous gas. Be alert to
the danger of CO – always open the
garage doors before starting the
engine in the garage.
 There is also a danger of CO poison-
ing if the exhaust system is leaking.
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150 Starting and drivingIt is possible for air to enter the lubricating
system in conjunction with an oil or oil-filter
change, or if the car has been stored for
some time. This air can cause the hydraulic
cam followers to emit a ticking noise, which
can persist for up to 15 minutes after start-
ing. Although this is quite normal and does
not indicate any malfunction, it is advisable
not to exceed 3,000 rpm before the noise
has disappeared.
The hydraulic cam lifters are completely
service free; the valve clearance is set up at
the factory and will not need any subse-
quent adjustment.
Starting the engineAvoid racing the engine or putting a heavy
load on it before it has warmed up. Drive
away as soon as the oil warning light has
been extinguished to enable the engine to
attain its normal temperature as quickly as
possible.
The engine has an automatic choke and
should be started as follows:
Cars with manual transmission
To start the engine the clutch pedal must
be fully depressed.
1 Depress the clutch pedal fully but do not
touch the accelerator.
2 Start the engine. Let the ignition key
spring back as soon as the engine has
started and is running smoothly – at very
low temperatures, you may need to run
the starter for up to 25 seconds. Wait
20–30 seconds before running the
starter again, to give the battery time to
recover.
Note:
On cars with manual transmission, if the
starter fails to engage when the ignition key
is turned to the start position, make sure the
clutch pedal is full depressed. Misposi-
tioned floor mats or other obstructions
under the clutch pedal may affect starting.
Let the engine idle for about 10 seconds. Do
not open the throttle wide for at least 2–
3 minutes after starting. Cars with automatic transmission
1 The selector lever must be in the P or N
position.
2 Keep your foot on the brake pedal.
3 Start the engine. Let the ignition key
spring back as soon as the engine has
started and is running smoothly – at very
low temperatures, you may need to run
the starter for up to 25 seconds. Wait
20–30 seconds before running the
starter again, to give the battery time to
recover.
Let the engine idle for about 10 seconds. Do
not open the throttle wide for at least
2–3 minutes after starting.
Useful tips on cold climate starting If 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.  The tail pipe of the exhaust system
can become very hot during driving.
Bear this in mind when loading and
unloading the car.
 Do not rest or sleep in the car when
parked with the engine running. There
is a risk of depressing the accelerator
which could lead to engine damage.
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151 Starting and driving
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 57), indicating that you
should have the car checked as soon as
possible by an authorized Saab dealer.
Important
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
 The system is optimized for fuel with an
octane rating of AON 90. The 2.3 Turbo
and 2.3 T are optimized for AON 93.
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 suit-
able 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
flashes, it indicates that the engine is mis-
firing which can result in damage to the
catalytic converter.
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152 Starting and driving
One of the advantages of the system is
that it enables the engine to be run
safely on lower-grade fuel, although not
lower than AON 87.
 The maximum boost pressure is
adjusted automatically to the knocking
or pinging tendency of the engine.
Occasional, 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.

Important considerations with cata-
lytic convertersThe catalytic converter is an emission-con-
trol device incorporated in the car’s exhaust
system. It consists of a metal canister with a
honeycomb insert, the cells of which have
walls coated in a catalytic layer (mixture of
precious metals).
To ensure that the catalytic converter con-
tinues to function properly, and also to avoid
damage to the converter and its associated
components, the following points must be
observed:
 Have the car serviced regularly in accor-
dance with the service program. The fuel
and ignition systems are particularly
important in this context.
 Always be alert to any misfiring of the
engine (not running on all cylinders) and
any loss of power or performance. At the
first sign of a malfunction, reduce speed
and take the car to an authorized Saab
dealer as soon as possible.
 If the engine fails to start (in very cold
weather or if the battery is flat), the car can
be push started (manual gearbox only) or
started using jumper cables to a donor
NOTICE If the engine sounds strange there is a
fault in the system. Have the car
checked without delay by an autho-
rized Saab dealer.
 The use of fuel with too low an octane
rating can cause serious engine dam-
age.
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.
NOTICEUse only unleaded gasoline. Leaded gas-
oline is detrimental to the catalyst and
oxygen sensor and will seriously impair
the function of the catalytic converter.
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153 Starting and driving
battery. However, as soon as you have
started the engine, it is important that it
runs on all cylinders. If it is misfiring, allow
i t t o i d l e f o r u p t o f i v e m i n u t e s t o g i v e i t t i m e
to settle and run smoothly. If, after this
time, the engine still fails to run properly,
turn off the engine and get in touch with
an authorized Saab dealer for advice.  Never park the car on dry grass or other
combustible material. The catalytic con-
verter gets very hot and could therefore
start a fire.
 Never drive off if the engine is misfiring.
 If you jump start the car when the engine
is already up to normal temperature, the
engine must start to run on all cylinders.
Stop jump-starting if the engine fails to
start immediately.
Failure to follow these directions could
result in the catalytic converter and associ-
ated components being damaged, and
could represent a breach of the warranty
conditions.
Fuel filler flap(certain variants only)The fuel filler flap is opened by means of a
button on the driver’s door. The flap is
spring-loaded, so it opens slightly automat-
ically when released.
NOTICEIf the car runs out of fuel, it is possible for
air to get into the fuel system. If this
happens, the catalytic converter may
overheat and be damaged.
IB1289
2
2
1
3
3
Oxygen-sensor-controlled
injection system 1 Engine control module
2 Oxygen sensor (lambda probe)
3 Catalytic converters
B466
Button for releasing filler flap
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154 Starting and drivingRefueling
Only fuel from well-known oil companies
should be used.
All Saab gasoline engines can be driven on
fuel of grade AON 87–93.
For optimum performance we recommend:
AO N 90 for 2.3t
AO N 93 for 2.3Turbo and 2.3T, (see page
272).
If fuel containing a mixture of alcohol is
used, the following restrictions apply:
Methanol: max. 5 % by volume.
Ethanol: max. 10 % by volume.
MTBE: max. 15 % by volume.
The fuel filler cap is located in the right rear
quarter panel.
Refueling:
1 Switch off engine.
2 Open fuel door
3 Insert the fuel-pump nozzle beyond the
flange on the filler pipe. Do not withdraw
the nozzle while fueling is in progress.
4Stop refueling the first time the pump
turns off, indicating the tank is full.
Fuel-tank capacity: 18.5 US gal. (70 liters)
Screw on the filler cap and keep turning until
it has clicked at least three times.
The most effective way to prevent conden-
sation forming in the tank (and thus avoid
possible running problems) is to keep the
tank well filled.
Before the onset of freezing temperatures in
winter, it may be advisable to add gasoline
anti-freeze to the fuel a few times to dispel
any condensation in the system.
WARNING
 Never use fuel for any purpose other
than as engine fuel.
 Fuel is highly flammable and can
cause severe burns. Never use an
exposed flame in the vicinity of gaso-
line. Never smoke when filling the
vehicle up with fuel.
 Do not use the phone when refueling.
Gasoline fuels are highly explosive.
NOTICE Do not overfill. Fuel should not come
right up the filler pipe as expansion
room is needed.
 The use of fuel with too low an octane
rating can cause serious engine dam-
age.
IB1755
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