2006 SAAB 9-5 check engine

65 Instruments and controls
Speedometer(U.S. speedometer shown)
The speedometer receives signals from the
wheel sensors in the ABS system.
Cars sold in U.S.: The speedometer dis-
plays the speed of the car in miles per hour
(mph).
Cars sold in Canada: The speedometer dis-
plays the speed of the car in kilometres per
hour (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 61).
Use the Saab Information display (SID) to
check the approximate distance that can be
traveled on the remaining fuel
(see page 68).
Temperature gauge The temperature gauge shows the temper-
ature 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.
IB4120
IB3850
IB3851
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66 Instruments and controlsCheck fuse 1 (radiator fan) in the fuse panel
under the hood, see page 223.
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.
Under certain barometric conditions, the
needle may enter the first part of the red
zone without necessarily indicating that a
fault has arisen.
If the needle repeatedly enters the red zone
and the engine at the same time loses
power because the monitoring system is
limiting boost pressure, you should contact
a workshop immediately. We recommend
that you contact an authorised Saab work-
shop.
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 cool-
ing-system can cause hot coolant and
steam to be released. Failure to heed this
warning may result in personal injury.
IB3852
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71 Instruments and controls
CHECK messages When the engine is started, CHECKING will
appear on the display for about 4 seconds
while the SID CHECK functions are being
performed.
When a CHECK message is activated while
driving, a chime sounds and the message
appears in SID. The number of possible
CHECK messages varies depending on the
car’s specifications.
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 whilst 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.
Briefly press the CLR button to acknowl-
edge a message from the display. After
acknowledgement, the message is dis-
played each time the ignition is re-started
until remedied.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 CLR 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.
*) 9-5 SportCombi: the high-mounted stop light is
not included in the autocheck of lights.
Message See
page
Use your seatbelts. 12
Front light failure. 207
Rear light failure. 211
Fog light failure. 208
Brake light failure. 211
Washer fluid level low.
Refill. 206
Coolant level low.
Refill. 198
Remote control battery
low. Replace battery. 49
Key not accepted.
Contact service. 54
Theft protection failure.
Contact service. 54
Gearbox too hot.
Make a safe stop. 156
Tighten fuel filler cap. 149
Time for ser vice.

254
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72 Instruments and controlsNIGHT PANELTo improve night-driving conditions inside
the car, the Night Panel mode can be
selected. In this mode, the amount of infor-
mation 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, all
the other instruments illumination being
extinguished and their needles moved to
zero. The SID display will be extinguished
and the backlighting for switches and other
controls will be dimmed. Note: All indicator
and warning lights, together with the display
of CHECK messages, will operate as nor-
mal, except ”Outdoor temperature”, see
page 68.The following conditions will wake up the
respective displays in the Night-Panel
mode:
 Setting of the Audio system or, SID (dis-
play 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.
 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 but-
ton.
Units and language versionsThe SID has four sets of units: CHECK messages can be displayed in six
language options: English, Swedish,
German, French, Italian and Spanish. Selecting units and language 1 Switch off the engine.
2 Briefly press i/SETbutton. Repeat this
until LANGUAGE/UNITS is displayed.
3 Hold i/SET depressed until a chime
sounds. Then select language using
or .
4 Briefly press the i/SET button. Then
select the units using or .
5 Briefly press the i/SET button. METRIC US GB IMPERIAL
km miles miles miles
km/h mph mph mph
liters US gal gallon gallon
°C °F °C °F
24-hour 12-hour 12-hour 12-hour
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142 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 44.
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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143 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.
We recommend that you contact an autho-
rized Saab dealer for checking and rectifica-
tion.
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
depressed or the car will jump for-
wards or backwards, which may
cause a crash9
– 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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145 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 58), indicating that you
should have the car checked as soon as
possible by a workshop. We recommend
that you contact 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 suit-
able place as soon as possible and turn
off the engine. The car must be towed to
a workshop. We recommend that you
contact 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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146 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
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.

NOTICE If the engine sounds strange there is a
fault in the system. Have the car
checked without delay by a workshop.
We recommend that you contact an
authorized 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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