2008 SAAB 9-5 coolant temperature

193 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.
NOTEThe Trionic engine management system
continuously monitors the operation of
these systems and has on-board diag-
nostic capabilities (OBD II).
If the ”Engine malfunction (CHECK
ENGINE)” lamp in the main instru-
ment illuminates, this indicates that the
Trionic ECM has detected a problem. The
car will continue to operate, but perfor-
mance may be diminished. You should
have your car checked by a Saab dealer
as soon as possible.
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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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274 IndexCruise control
__________________ 159
Cup holder
____________________ 128
Dampers
______________________ 269
Date
_________________________ 105
Date code, tires
_________________ 233
DDate display
___________________ 105
DICE/TWICE ___________________ 217
Definitions and terminology, tire
____ 231
Determining correct load, tires
_____ 233
Dim-dipped beam
________________ 73
Direction indicators _______________ 75
Diversity antenna
_______________ 109
Door handles
___________________ 44
Door mirrors
___________________ 116
Doors, locks & luggage compartment
_43
Drive belt
______________________ 267
Drive belt, alternator
_____________ 201
Drive belts, length
_______________ 267
Driver’s seat, programmable
________ 20
Driving at night
_________________ 181
Driving in hot weather
____________ 173
Driving with a load
______________ 181
EEDR (Event Data Recorders)
______ 259
ESP
® _________________________ 163
Electrical system, technical data
____ 267Electric heating of rear seat
________ 87
Electric windows
________________ 115
Electronic Stability Program
_______ 163
Electronic starting interlock _________ 49
Emergency operation of moonroof
__ 124
Emission control systems
_________ 192
Engine bay
____________________ 191
Engine bay, cleaning
_____________ 245
Engine number
_________________ 272
Engine oil, grade ________________ 265
Engine, description ______________ 194
Engine, technical data ____________ 264
Engine, temperature gauge
________ 65
Engine-oil level, checking
_________ 194
Error codes, Audio System ________ 112
Event Data Recorders (EDR) ______ 259
Expansion tank, coolant
__________ 195
FFilling a portable fuel container
_____ 148
Flat spots, tires
_________________ 224
Fluid level, automatic transmission
__ 195
Folding the parcel shelf,
9-5 SportCombi
________________ 133
Folding the rear seat, 9-5 Sedan
___ 129
Folding the rear seat, 9-5 SportCombi
132
Frequency band
_________________ 93
Frequently asked questions on airbag

40
Front fog lights
__________________ 76
Frost warning
___________________ 68Fuel
__________________________ 146
Fuel consumption
________________ 68
Fuel container
__________________ 148
Fuel gauge
_____________________ 65
Fuel grade _____________________ 264
Fuel information
_________________ 148
Fuse box under hood
____________ 220
Fuse panel
_____________________ 216
Fuses
_________________________ 216
GGarage door opener
_____________ 118
Gearbox number
________________ 272
Gearbox oil, checking
____________ 195
Gearbox, technical data, __________ 268
General functions
_______________ 105
Glove compartment ______________ 126
HHandbrake
_____________________ 165
Hazard warning lights
_____________ 76
Head restraint
___________________ 21
Headlight flasher _________________ 73
Headlights
______________________ 73
Heated front seats
________________ 87
Hood
_________________________ 190
Horn __________________________ 114
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