2008 SAAB 9-5 cooling

59 Instruments and controls
This light indicates a malfunction in the
fuel-injection or ignition system.
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to
fully install the cap. See Fuel cap on page
147. The diagnostic system can determine
if the fuel cap has been left off or improperly
installed. A loose or missing fuel cap will
allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly
installed should turn the light off.
The car may still be driven with care and
with somewhat diminished performance
(see
page 144).
This light will come on if the engine oil pres-
sure is dangerously low. If the light flashes
or comes on while you are driving, stop the
car, switch off the engine and check the
engine oil level (see page 194).
This light will come on if the battery is dis-
charging. If it comes on while you are driv-
ing, stop the car as soon as possible and
switch off the engine.
Check the alternator drive belt (see page
201). If the belt has broken:
the engine may overheat (cooling system
will not function properly)
the battery will not be charged
the A/C compressor will not run and
power assistance for the steering will be
lost.This light will come on if there is insufficient
brake fluid in the reservoir (see pages 196).
If the ABS warning light is on at the same
time, the ABS system may be inoperative
because of a fault (see ”Anti-lock brake
warning”, page 60).
NOTEThe car should be checked immediately
at a workshop to prevent more serious
faults from arising. We recommend that
you contact an authorized Saab dealer.
Warning, oil pressure
(engine oil)
NOTEUnder no circumstances must the car be
driven when this warning light is on. Low
oil pressure can result in serious engine
damage.
Warning, charging
Brake warning light
WARNING
Never drive the car when this warning
lights is on. Danger of brake failure!
If the level of brake fluid in the reser-
voir is below the MIN mark, the car
should be towed to a workshop. We
recommend that you contact an
authorized Saab workshop.
Have the brake system checked at
once by a workshop. We recommend
that you contact an authorized Saab
dealer.
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81 Instruments and controls
Temperature control The cabin is divided into two temperature
zones:
The driver’s zone
The passenger zone (front and rear
seats)
The desired temperature can be set
between 60 and 80°F.
The displayed temperature is not the abso-
lute temperature but corresponds to the
comfort level normally experienced at that
temperature after allowance has been
made for the air flow, relative humidity, solar
radiation, etc., currently prevailing inside
the car.
The most usual temperature setting is
64–76°F, depending on personal prefer-
ence and what clothing is worn.
To allow the system time to adjust,
changes in the temperature setting shall
only be made in steps of 2°F.
Once the desired climate has been
achieved, the rear center vents can be
closed to prevent warm air being distributed
at face height.
When the ignition is switched off, only the
temperature control affects the system the
next time the engine is started. The system
will warm up/cool down to the temperature
to which the control is set.MAX heat, red indication
The MAX heat setting is obtained by turning
the temperature control to the first position
past 80 (to the red LED). The driver’s side
selection regulates air distribution and recir-
culation status. Temperature, however, can
be adjusted on the passenger side.
Settings when MAX heat is selected:
Maximum heat
Air distribution to windshield and floor
Recirculation OFF (even if manually
selected before)
Fan: high speed
MAX cooling, blue indicator
The MAX cooling setting is obtained by turn-
ing the temperature control to the first posi-
tion past 60 (to the blue LED). The driver’s
side selection regulates air distribution and
recirculation status. Temperature, however,
can be adjusted on the passenger side.
Settings when MAX cooling is selected:
Maximum cooling (A/C compressor will
run even if AC OFF manually selected
before)
Air distribution through panel vents
Fan: maximum speed
Recirculation ON
IB369
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82 Instruments and controlsFunctionsPressing AUTO will cancel all manual settings.
If a manual function is selected, it will be locked in but other functions
will be controlled automatically.
The selected temperature is always maintained automatically.
Temperature, air distribution, fan speed and recircu-
lation will be controlled automatically.
Pressing AUTO once will cancel all previous manual
selections.
The ACC system is in AUTO mode when the engine
is started.
A/C compressor OFF.
No cooling of inlet air. Temperature, air distribution
and fan speed still under automatic control.
Turn the fan control anticlockwise until "OFF" lights
up.
ACC system OFF.
Fa n O F F.
A/C compressor OFF.
Air distribution selections locked in current settings.
Recirculation can be selected manually.
Heating
3
33 3 and ventilation
3
33 3 of the front seats is deac-
tivated.
Pressing the AUTO button will put the system into
automatic mode.
Reactivation by turning the fan control clockwise one
click causes the system to resume any manual selec-
tions.
The rear window and door mirror heating is controlled
manually.
Deactivate the heating as soon as the rear window is
clear of ice and misting to avoid imposing a heavy load
on the battery longer than necessary. Note, however,
that heating will deactivate automatically after a set
time, depending on the outside temperature.
The ACC system can be programmed to activate heat-
ing automatically when outside temperature is below
+5
C and the temperature inside the car is below
+10
C. See page 85.
Turn the fan control to increase fan speed.
If fan speed 0 is selected, the A/C compressor will be
disengaged and the indicator on the AC OFF button
will illuminate.
Recirculation is controlled automatically to optimize
cooling although it can also be switched on and off
manually.
Recirculation does not appreciably change the air
quality but it can be useful to switch it on to avoid
unpleasant smells from entering the cabin.
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144 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
perfectly 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.

NOTEIf 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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174 Starting and driving2 Wait until the needle has dropped back
to indicate normal temperature (roughly
midway, in the white zone) before stop-
ping the engine. If the coolant needs
topping up, unscrew the cap on expan-
sion tank carefully.
Top up, as necessary, ideally with a
50/50 mixture of Saab-approved coolant
and water. If only water is available, use
that, but remember to have the coolant
mixture checked as soon as possible. 3 As soon as possible, have the cooling
system checked by a workshop. We
recommend that you contact an autho-
rized Saab dealer.
Towing a trailer3
33 3Trailer hitch attachment3
33 3Trailer hitch attachments are available as
accessories. These are designed for a max-
imum trailer weight of 3500 lbs. (1588 kg),
see also page 261.
Use only the electrical trailer hitch socket
provided in the trailer hitch kit.3
Saab recommends:
Use a Saab original hitch kit attachment
which is designed and tested by Saab.Consult your Saab dealer regarding the
appropriate hitch kit for your car.
If the car has a 13-pin genuine Saab electri-
cal socket, the trailer/caravan can be
equipped with rear fog lamp and reversing
lamps.
The caravan can also have interior and
exterior lighting when the car’s ignition is off.
Do not put a load on the battery for so
long that it becomes discharged and the
car cannot be started.
There is also access to power in the caravan
during a journey, the caravan battery can be
charged for example.

WARNING
Exercise care when opening the hood
if the engine is overheated. Never
remove the expansion tank cap com-
pletely when the engine is hot.
The cooling system is pressurized -
hot coolant and vapor can escape.
These can cause injury to your eyes
and burns. Open the cap slowly to
release the pressure before
removing it.
WARNING
When towing a trailer, do not attempt
to negotiate a hill having a gradient in
excess of 15 %. The weight distribu-
tion over the front wheels of the car will
be insufficient to prevent wheelspin,
making further progress impossible.
In addition, the parking brake may not
always be able to hold the car and
trailer securely, with the result that the
wheels can start to slide downhill.
Always apply the trailer’s parking-
brake when unhitching it. There is oth-
erwise a risk of personal injury or
damage to the bumper should the
trailer start to roll.
NOTEOnly use a towbar that has been
approved for your car. We recommend
that you entrust towbar installation to an
authorized Saab workshop, which can
also provide important information such
as trailer weight. Your authorized Saab
workshop has information on how the
towbar is to be installed and whether
other measures must be undertaken that
could affect the cooling system or other
equipment.
We recommend that you consult an
authorized Saab dealer for guidance on
how to connect the trailer hitch electrical
system.
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175 Starting and driving
Trailer weightMaximum recommended trailer weights for
different gradients, with a view to comfort
and drivability for manual and automatic
cars, are shown on the drawing.
Make sure you are familiar with the law
regarding speed limits for towing, maxi-
mum trailer weights, trailer-braking
requirements, and also any special
driving-license provisions
(see also page 261).
The specified trailer weights and gradients
assume that the journey starts at the hill and
therefore apply only to short periods. Recommendations for driving in hilly
terrain
The following time limits are based on the
capacity of the cooling system in warm
weather, i.e. approximately 86
F (30
C).
The following time limits are based on the
capacity of the cooling system in hot
weather, i.e. approximately 104
F (40
C).
Gradient
of hill, % Maximum
trailer weight,
lbs. (kg)Maximum dura-
tion, minutes
6–7 3300 (1500) unlimited
8–9 3300 (1500) 15 max
10–15 1870 (850) 15 max
Gradient
of hill, % Maximum
trailer weight,
lbs. (kg)Maximum dura-
tion, minutes
6–7 2000 (900) unlimited
8–9 2000 (900) 15 max
10–15 1000 (450) 15 max.
Maximum recommended trailer weights
for different gradients
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195 Car care and technical information
Transmission fluidManual transmission Check and top up the fluid in accordance
with the service program.Automatic transmissionCheck and top up the fluid in accordance
with the service program.
Coolant There is an overpressure in the cooling sys-
tem. Coolant temperatures can sometimes
exceed 212°F (100 °C).
The expansion tank is transparent to facili-
tate checking of the coolant level.
When the engine is cold, the coolant shall lie
on or just above the KALT/COLD mark on
the expansion tank.If the message
”Coolant level low.
Refill.”
is displayed on the SID, check the level of
fluid in the expansion tank.
Top up, as necessary, with equal parts of
clean water and Saab-approved coolant.
Coolants of a different brand could damage
the engine or cooling system. We therefore
recommend strict use of coolants that have
been approved by Saab.
If the expansion tank is empty when coolant
is added, run the engine to normal temper-
ature and top up again, as necessary.
WARNING
Proceed with caution if the radiator is
boiling when you open the hood.
Never remove the expansion-tank
filler cap when the radiator is boiling.
The cooling system is pressurized –
hot coolant and vapor can escape
when the filler cap is released. These
can cause injury to your eyes and
burns. Loosen the cap carefully, and
let the engine cool before removing
the cap.
Exercise care when adding coolant.
Coolant on hot surfaces constitutes a
fire risk.
IB1338
Coolant expansion tank
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196 Car care and technical informationThe cooling system is charged at the factory
with coolant containing a 45 % concentra-
tion of a combined antifreeze and corrosion
inhibitor. A weaker mixture will result in
reduced anticorrosion protection. For
protection against freezing in very cold
weather, a stronger concentration will be
needed.
A 60 % concentration of antifreeze will pro-
vide protection at temperatures down to
–58°F (–50°C).
The coolant does not normally have to be
changed during the service life of the car.
The type of coolant used has a reddish color
and should not be mixed with other types of
coolant. Saab Original coolant should be
used all year round. Only use coolant
approved by Saab.
Note:
If incorrect coolant is used or added, the
life-time properties will be affected. Even if
the coolant is flushed from the system and
replaced with life-time coolant, life-time
properties are no longer retained and the
coolant must then be drained and replaced
at regular intervals.

Brake and clutch fluid Checking the fluid level The combined brake and clutch-fluid reser-
voir is transparent to facilitate checking of
the fluid level.
The level should be between the MAX and
MIN marks. Top up, as necessary, with
DOT 4 fluid. Do not use DOT 5 brake fluid.
NOTEAlways mix the antifreeze with the
appropriate volume of water before
adding it to the cooling system.
If pure antifreeze is added, the engine
could still freeze and be damaged. This is
because the antifreeze will not mix
properly with the coolant before the
thermostat has opened to allow full
circulation.
WARNING
Brake fluid deteriorates as it becomes
old. Because it is hygroscopic, it absorbs
water from the air and, in time, could allow
vapor to form in the brake system, thus
reducing its performance. It is therefore
important that brake fluid be changed reg-
ularly, as specified in the service pro-
gram.
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