SAAB 9-5 2009 Owners Manual

191 Car care and technical information
Saab Trionic engine
management systemThe Saab Trionic engine management
system is a unique Saab development that
combines sequential multiport fuel injection,
electronic distributorless ignition and turbo-
charger boost pressure control into one sys-
tem.
The Trionic engine control module (ECM)
monitors many different engine parameters
such as:
 Intake manifold pressure
 Intake air temperature
 Crankshaft position
 Engine coolant temperature
 Throttle position and
 The oxygen content of the exhaust gases.
The ECM receives information regarding
engine knocking from a sophisticated feed-
back function in the ignition discharge unit.
By processing all of this information, the Tri-
onic system can control fuel injector open-
ing duration, ignition timing and turbo-
charger boost pressure to provide excellent
engine performance while maintaining low
emissions and fuel consumption.
ORVR (Onboard Refueling Vapor
Recovery)Hydrocarbon vapors formed when refueling
will be recovered by the car and not
released into the atmosphere. The hydro-
carbons are absorbed in a evaporative
emission canister. When the engine is sub-
sequently started, the evaporative emission
canister is gradually purged as air is sucked
into it through a shut-off valve. The hydro-
carbon/air mixture passes through the evap
canister purge valve and into the engine
where it is burned.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked at least 3 times. Otherwise, it is pos-
sible for the CHECK ENGINE light to illumi-
nate.
Refueling, see page 146.
NOTICEThe Trionic engine management system
continuously monitors the operation of
these systems and has on-board diag-
nostic capabilities (OBD II).
If the ”Service Engine Light also known as
CHECK ENGINE” lamp in the main
instrument illuminates, this indicates that
the Trionic ECM has detected a problem.
The car will continue to operate, but per-
formance may be diminished. You should
have your car checked by a Saab dealer
as soon as possible.
95_US_MY09.book Page 191 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

192 Car care and technical informationEngineThe 2.3-liter model is a transverse, 4-cylin-
der in-line engine with twin overhead cam-
shafts and 4 valves per cylinder.
This engine is equipped with balance shafts
that reduce engine vibration to a minimum.
The balance shafts are chain driven and
rotate at twice the speed of the crankshaft.
They produce forces and torques that are
opposed to those generated by the pistons
and connecting rods, an effect that occurs
twice for each revolution of the engine.
Engine noise is also reduced as the
counter-rotating shafts counteract the vibra-
tion from the moving parts of the engine.
The transmission, located on the right
(viewed from the front), is integrated with
the engine. All models have front-wheel
drive.
Engine oilChecking the oil level Check the engine-oil level regularly. This
should be done after the engine has been
run to normal temperature and then allowed
to cool for 2–5 minutes, with the car stand-
ing on level ground. Remove the dipstick
and wipe it clean before checking the level.The oil level must not be allowed to drop
below the MIN mark on the dipstick, nor
should oil be filled beyond the MAX mark, as
this can lead to excessive oil consumption.
The distance between the MIN and MAX
marks on the dipstick corresponds to a
volume of approximately 1.05 qts (1 liter).
When necessary, add oil of the recom-
mended grade via the dipstick tube.
Recommended oil grade, see page 260.
NOTICE Do not operate the engine with a low
oil level.
 Change engine oil and oil filter as pre-
scribed in the service programme.
 Only use the recommended oil type.
Follow the three points listed above to
avoid severe engine damage.
More frequent oil changes are recom-
mended if your vehicle is operated under
certain conditions, see page 252.
IB601
Balance shafts
95_US_MY09.book Page 192 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

193 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
95_US_MY09.book Page 193 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

194 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.
NOTICEAlways 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.
95_US_MY09.book Page 194 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

195 Car care and technical information
Use only new brake fluid from a sealed
container.
Check that there are no leaks in the brake
system.
The brake fluid level will fall somewhat as
the brake pads wear. The MAX level in the
reservoir corresponds to the amount of
brake fluid required with new brake pads. If
the fall in fluid level is moderate, due to
normal brake pad wear, topping up is not
necessary.
Changing of the brake fluid should be
carried out by a workshop. We recom-
mend that you contact an authorized
Saab dealer.
The vehicle´s regular braking system is
adjusted automatically, but the parking
brake has to be adjusted manually. This
work, involving adjustment of the parking
brake cables and brake pads, must only be
carried out by a workshop. We recommend
that you contact an authorized Saab dealer.It is not possible to detect, through abnormal
pedal or parking brake-lever travel, whether
brake pads are worn and need replacing. It
is therefore essential that brake pads be
checked regularly, as specified in the
service program.
Brake pad wear indicators The outboard brake pads on the front
wheels incorporate pad-wear indicators.
When the lining is down to 0.11 in (3 mm),
the pad will produce a screeching, squeal-
ing or scraping noise when the brakes are
applied. New pads should be fitted without
delay.
Brake pads should only be changed by a
workshop. We recommend that you con-
tact an authorized Saab dealer.
NOTICEAvoid spilling brake fluid onto paintwork,
since it can cause the paint to bubble and
lift. If any brake fluid is spilled, the area
should be flushed with large quantities of
water as quickly as possible.
IB1188
Brake and clutch-fluid reservoir
95_US_MY09.book Page 195 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

196 Car care and technical informationPower steering fluidCheck the level of the power steering fluid in
the reservoir regularly, in accordance with
the service program.
The wheels should point forward during the
check.
Clean around the cap before it is
unscrewed. Clean the dipstick. Screw in the
cap completely again before checking the
level.
The oil should lie between the MAX and MIN
marks when the oil temperature is about
70°F (+20°C). If the oil is colder the level can
be lower, and in higher temperatures the
level can be higher, both of which are
acceptable.
Top up with ”Power Steering Fluid CHF 11S
or CHF 202”.
Air filter
WARNING
 Do not fill the power steering fluid to
above the MAX mark. Too much fluid
can result in leakage.
 Power steering fluid on hot engine
components constitutes a fire risk.
WARNING
 For Service and Repair, parts equiva-
lent to those used by Saab should be
used.
 Be aware that some non standard
replacement parts may put you in an
unsafe condition, even if they might fit.
IB501
Power steering fluid reservoir
95_US_MY09.book Page 196 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

197 Car care and technical information
Battery
The battery is provided with a cover to
protect it from radiated heat. If the battery is
exposed to high temperatures, its life will be
shortened. To remove the cover, release
the two clips along its long sides.
The cover fits the standard battery installed
in the car. If a new battery is to be fitted,
make sure that its dimensions are the same
as the standard one.
The battery is maintenance free.
If frequent short journeys are made, the bat-
tery may need to be given a booster charge.
This can be done either using a battery
charger or by taking the car for a long run.
A car with a standard equipment specifica-
tion and a fully charged battery can be left
for up to 40 days and still have a sufficient
charge for starting. If extra equipment is fit-
ted, such as a car phone, the charge may
only be sufficient for about 15 days.
Charging/replacing the battery Connect the positive lead to the positive (+)
battery terminal (red), and the negative lead
to a good ground point, e.g. the lifting lug at
the front of the engine.
To remove the battery, always disconnect
the negative (black) lead first and reconnect
it last when fitting the new battery.
The battery size must comply with DIN
53735 MFI 230/2.16.
WARNING
 Work on the battery may entail an
explosion hazard, since the battery
gives off hydrogen which forms an
explosive mixture with the oxygen in
the air.
For this reason, always avoid sparks
or open flames when working near the
battery.
 The battery contains corrosive sulfuric
acid. Always wear a face mask or
goggles when working on the battery.
 If battery acid gets into the eyes or
splashes the skin or clothing, wash the
affected area liberally with water.
If acid gets into the eyes or a large
quantity makes contact with the skin,
seek medical help.
 Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash your hands after
handling.
NOTICEA discharged battery can freeze and frac-
ture. Batteries should therefore always be
stored away from frost.
NOTICETo avert the danger of short-circuiting
between the positive (+) terminal on the
battery and the inlet manifold on the
engine, always disconnect the negative
(–) battery lead first and reconnect it last.
95_US_MY09.book Page 197 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

198 Car care and technical information NOTICE If boost charging never use anything
but a 12-volt charger, see page 186.
 Never reverse the polarity of the bat-
tery by connecting the leads to the
wrong terminals. The red, positive
lead connects to the positive (+) termi-
nal, and the black, negative lead to the
negative (–) terminal.
 Serious damage can occur to the car´s
electrical system if a battery or alterna-
tor lead is disconnected while the
engine is running.
 The nut on the battery clamp should
be tightened to a torque of 10 Nm.
IB3131
Correct position for battery clamp
IB3130
Battery
95_US_MY09.book Page 198 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

199 Car care and technical information
Drive belts
The alternator is situated on the right-hand
side of the engine, adjacent to the bulkhead.
It is driven via a Poly-V-belt from the crank-
shaft pulley.
The Poly-V-belt also drives the water pump,
the A/C compressor and the steering servo
pump.
The belt tension is critical and is adjusted
automatically by the belt tensioner.
See also page 59, ”Warning, charging”.
WARNING
 Keep hands and clothing clear of drive
belts when engine is running.
 Always stop the engine before
inspecting drive belt.
 The radiator fan is electric and can
start even when the engine is
switched off.NOTICESerious damage can be done to the car’s
electrical system if an alternator lead is
disconnected while the engine is running.95_US_MY09.book Page 199 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com

200 Car care and technical informationWipers and washersCheck and clean all wiper blades regularly.
If poor wiper performance is experienced,
clean the windshield with a quality glass
cleaner. This is particularly important if the
car has been through an automatic car
wash, as these sometimes leave a wax
coating on the windshield.
If wiper performance is still unsatisfactory,
fit new blades.
Changing the windshield wiper
blades1 Hold the wiper arm and push the two
catches off the arm.
2 Move the blade along the extension of
the arm.
Fitting the wiper blade
1 Slide the new blade onto the arm until it
locks in position. Make sure that the end
of the wiper arm is within the blade
bracket.
2 Check that the blade is seated correctly.
Rear window, SportCombi1 Detach the blade from the arm by pres-
sing the blade’s mounting from underne-
ath.
2 Install a new blade by pressing the shaft
of the blade in the arm’s mounting.
The washer jet, which is located next to the
high-mounted brake light, is not adjustable.
IB4764
95_US_MY09.book Page 200 Tuesday, April 15, 2008 11:03 AM
ProCarManuals.com