2005 SAAB 9-5 check engine

59 Instruments and controls
Speedometer(U.S. speedometer shown)
The speedometer receives signals from the
wheel sensors in the ABS system.
If the NIGHT PANEL mode has been selec-
ted, the scale will be illuminated up to 87
mph (140 km/h). The remainder of the scale
will be illuminated if the speed of the car
exceeds 84 mph (135 km/h).
Fuel gauge Fuel-tank capacity, 18.5 US gal. (70 liters).
The fuel gauge shows the amount of fuel left
in the tank. When this is down to about
2.5 gal. (10 liters), a warning light on the
main instrument panel will come on (see
page 55).
Use the Saab Information display (SID) to
check the approximate distance that can be
traveled on the remaining fuel
(see page 61).
Temperature gauge The temperature gauge shows the tempe-
rature of the coolant. The needle should be
in the middle of the scale when the engine
is at normal operating temperature.
If the needle approaches the red zone,
which can occur in very hot weather or when
the engine is under a heavy load, drive in the
highest gear possible, keep the engine revs
low and avoid shifting down.
If the needle enters the red zone, the
warning light will come on and an alarm
chime will sound.
2030405060
70
80
90
100
110
120
130
140
150
160
240
260220200180160
140 120 100
80
60
40
20
10
IB1851
IB345
IB343
ProCarManuals.com

60 Instruments and controls Check fuse 1 (radiator fan) in the fuse panel
under the hood, see page 215.
If the needle repeatedly enters the red zone,
stop the car as soon as it is safe to do so and
check the coolant level by looking at the
level visible through the plastic tank – do not
remove the cap.
If the coolant level falls below the MIN mark,
the Saab Information Display (SID) will dis-
play the message
”Coolant level low.
Refill.”.
Pressure gaugeThe turbo gauge indicates the air volume for
combustion, which is equivalent to the
engine load.
At low loads, the needle will move within the
white zone. At higher loads and during
heavy acceleration, the needle will enter the
yellow area. At very high loads or under cer-
tain barometric conditions, the needle may
enter the first part of the red zone without
indicating that there is a fault.If the needle repeatedly enters the red zone
and the engine at the same time loses
power, because the monitoring system is
holding the charging pressure down, you
should contact an authorized Saab dealer.
If the speed exceeds 149 mph/240 km/h
(155 mph/250 km/h, 9-5 Aero) the increase
in speed will be limited by the lowering of the
boost pressure. The pressure gauge then
moves towards the middle of the orange
zone, indicating reduced engine output and
thus reduces the speed of the car as well.
NOTICEIf the needle, despite the above action,
enters the red zone, stop the car immedi-
ately, let the engine idle.
If the needle stays in the red zone, stop
the engine.
WARNING
Never open the cap of the expansion tank
completely when the engine is hot, open
with care. The pressure in the coo-
ling-system can cause hot coolant and
steam to be released. Failure to heed this
warning may result in personal injury.
IB344
ProCarManuals.com

64 Instruments and controlsTo calculate the arrival time if a specified
average speed is maintained
1 Select Dist using the button.
2 Set the distance to be covered.
3 Press to select Speed Ø.
4 Set the average speed you intend to
drive.
5 Press SET to display the estimated arri-
val time.
At the beginning of a journey, the Speed Ø
and Arriv functions will display current
values. If values are set during the journey,
the new values will be displayed after a
delay of about 10 seconds.
Calculating the requisite average speed:
1 Press to select Dist.
2 Set the distance to be covered.
3 Press to select Arriv.
4 Set the desired arrival time.
5 Press SET to display the average speed
you need to maintain to arrive at the
desired time.
At the beginning of a journey, the Speed Ø
and Arriv functions will display current
values. If values are set during the journey,
the new values will be displayed after a
delay of about 10 seconds.Resetting values
To reset the values, press CLEAR for at
least four seconds.
The following functions will be reset
simultaneously:
 Estimated range on remaining fuel
(function based on a fuel consumption of
28 mpg).
 Average fuel consumption.
 Average speed.
 Arrival time (function based on current
speed).
Programmed values for Dist, Alarm and
Speed W will not be reset (see the respec-
tive function).
CHECK messages When the engine is started, CHECKING will
appear on the display for about four
seconds, while the SID checks are being
performed.
When a CHECK message is generated
while the car is being driven, a chime will
sound, INFO DISPL will illuminate on the
main instrument panel, and the message
will appear on the SID. The number of mes-
sages that can be displayed by the SID
varies with the specification of the car.
If more than one CHECK message has
been generated, the
+ symbol will appear to
the left of the text on the display. The mes-
sages appear in order of priority.
If a new fault occurs while another message
is being displayed, the message relating to
the new one will appear for 10 seconds,
after which the display will return to the ear-
lier one.
Press CLEAR once to acknowledge a mes-
sage, whereupon it will be cleared from the
display. It will not be displayed again before
the ignition has been switched off and then
on again.
ProCarManuals.com

65 Instruments and controls
The following messages may be displayed: 1) This message will be displayed approximately
600 miles (1,000 km) before the next scheduled
service is due, or when 365 days have elapsed
since the last service. The message should be
cleared at the time of that service (see the Saab
Warranties & Service Record Booklet).
This message can also be deleted by first briefly
pressing the CLEAR button, then depressing it a
second time for at least eight seconds until
”SERVICE” appears on the display and a chime
sounds. The message can only be deleted when
it is shown on the SID.
Night panelTo improve night-driving conditions inside
the car, the Night Panel mode can be selec-
ted. In this mode, the amount of information
displayed is reduced, and only the most
important instruments and displays will be
illuminated.
When the Night Panel button is pressed,
only the speedometer will be illuminated (up
to the 87-mph or 140-km/h graduation), all
the other instruments illumination being ext-
inguished and their needles moved to zero.
Both the SID and the ACC displays will be
extinguished and the backlighting for swit-
ches and other controls will be dimmed.
Note: All indicator and warning lights,
together with the display of CHECK messa-
ges, will operate as normal, except ”Out-
door temperature”, see page 62.The following conditions will wake up the
respective displays in the Night-Panel
mode:
 Setting of the Audio system, SID or ACC
(display comes on for ten seconds).
 CHECK message generated in the SID.
 High engine revs cause the rev counter to
be illuminated until the engine speed has
fallen again.
 If the quantity of fuel remaining falls below
4 gallons (15 liters), the fuel gauge will be
illuminated.
 If the engine temperature rises above nor-
mal, the temperature gauge will be illumi-
nated.
 If the speed of the car exceeds 84 mph
(135 km/h), the entire speedometer will
be illuminated.
 In cars with automatic transmission, if the
selector lever is moved from D to position
M or L, the selector indication on the main
instrument panel will be illuminated.
To restore the displays and lighting to the
normal mode, press the Night-Panel button. Message See
page
Fog light failure. 198
Rear light failure. 203
Brake light failure. 203
Washer fluid level low.
Refill. 196
Coolant level low.
Refill. 188
Remote control battery
low. Replace battery. 41
Key not accepted.
Contact service. 48
Theft protection failure.
Contact service. 48
Gearbox too hot.
Make a safe stop. 146
Time for ser vice.
1)
246
ProCarManuals.com

132 Starting and drivingIgnition switchThe combined ignition switch and gear-
lever lock is located in the center console
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 38.
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
ProCarManuals.com

133 Starting and driving

If the car does not startIf the text
”Key not accepted.
Contact service.”
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 position,
the clutch pedal must be fully depres-
sed or the car will jump forwards 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 poiso-
ning if the exhaust system is leaking.
ProCarManuals.com

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.
ProCarManuals.com

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.
ProCarManuals.com