ABS SAAB 9-3 2008 User Guide

175 Starting and driving
Traction Control
System (TCS)Anti-spin systemHow the system worksThe Traction Control System (TCS) is
designed to prevent wheelspin. This
enables the car to achieve the best possible
grip and, hence, maximum tractive effort,
together with greater stability.The TCS uses information from the ABS
wheel sensors to detect when the front (driv-
ing) wheels are rotating faster then the rear
wheels.
If the two front wheels are rotating faster
than the rear wheels, the torque from the
engine is reduced to eliminate the differ-
ence.
The process continues until all the wheels
are rotating at the same speed.
The advantages of the TCS become most
apparent when the cohesion between the
front wheels and the road surface is so low
that one or both of the wheels would lose
their grip were the car not equipped with the
TCS, e.g.:
When the car is pulling away or accelerat-
ing with the front wheels on different
surfaces (e.g. one slippery and one dry),
the TCS functions like an electronic differ-
ential lock, making sure that both wheels
rotate at the same speed. The system
also functions when the car is reversing.
When cornering, if the inside front wheel
rotates faster than the other wheels.
TCS OFF
lights up if:
the system has been switched off
manually. It cannot be switched off if the
car is travelling faster than 35 mph
(60 km/h).
there is a fault in the ABS system
a fault has been detected and the system
has therefore been switched off and at the
same time the following message is
shown on the SID:
WARNING
When driving normally, the TCS system
helps to improve the car’s stability,
maneuverability and traction under slip-
pery road and extreme driving conditions.
The TCS must not be regarded as a
system to enable the driver to maintain
higher speeds. The same precautions
must be adopted as normal for safe cor-
nering and driving on slippery roads.
Traction control failure.
Contact service.
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176 Starting and drivingTCS indicatorWhen the ignition switch is turned to the ON
position, the lamp is lit for about 4 seconds
while the system performs self-diagnosis.
The light comes on when the TCS is
operative, that is when one of the wheels
has lost its grip.
The fact that the TCS is operative indicates
that the limit for grip has been exceeded and
that the driver must exercise greater care.
Temporarily turning the TCS offThe TCS is switched on automatically when
the engine is started.
It may be necessary to switch off the system
if the car has become bogged down, for
instance.
If a fault is detected in the ABS, the TCS will
be switched off automatically.
The cruise control system (if active) will
automatically be disengaged if the TCS is
operative.Disengage the system in Settings.
1Select Settings using the steering
wheel buttons, or .
2 Hold the SET button depressed until a
chime sounds.
3Select TCS.
4 Press the SET button.
5Select ON or OFF.
End by pressing the SET-button.
Go back/undo using the CLR-button.
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177 Starting and driving
Electronic Stability
Program ESP
®
Anti-skid system
The ESP
® system employs both the
antilock braking system (ABS) and the trac-
tion control system (TCS). It is a system that
helps the driver to stabilize the car in
unusual circumstances that can otherwise
be more difficult to handle.
How the ESP
® system works
The ESP
® system can help to prevent the
car from skidding by braking one or several
wheels independently of the driver. The
engine output is then also reduced to pre-
vent the driving wheels from spinning. The
car has sensors that measure wheel speed,
yaw rate, lateral acceleration, steering
wheel position and braking pressure. The
values provided by these sensors are used
to calculate the actual direction of the car,
the intentions of the driver and whether the
ESP
® system should be engaged.
If this direction does not agree with that
intended by the driver, calculated from the
steering wheel position, the ESP
® system is
engaged.
The ESP
® system improves the driver’s
chances of retaining control over the car in
a critical situation.
WARNING
When driving normally, the ESP
® system
helps to improve the car’s stability and
maneuverability under slippery road and
extreme driving conditions. The ESP
®
system must not be regarded as a system
to enable the driver to maintain higher
speeds. The same precautions must be
adopted as normal for safe cornering and
driving on slippery roads must be
adopted.
Illustration of how the system applies the
brakes on one or several wheels in order
to reduce the likelihood of the car skidding
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178 Starting and drivingESP
® system OFF
lights up if:
the system is turned off manually. The car
must be travelling slower than 35 mph
(60 km/h). The TCS is also disengaged.
a fault is detected in the ABS-system
a fault has been detected in the system
and the system has therefore been
switched off. The following message will
be displayed on the SID:
ESP
® system indicator light
When the ignition switch is turned to the ON
position, the lamp is lit for about 4 seconds
while the system performs self-diagnosis.
The light comes on for a short period of
time when the ESP
® system is operative.
Operation of the ESP® system indicates
reduced cohesion between the tires and the
road, and that extra care should be taken by
the driver during continued driving.
Temporarily turning ESP
®
system off
The ESP
® is switched on automatically
when the engine is started.
It may be necessary to switch off the system
if the car has become bogged down, for
instance.
The ESP® system is always engaged
during braking, even if it has been switched
off manually with the ESP
® button.
The cruise control system (if active) will
automatically be disengaged if the ESP
®
system is operative.Disengage the system in Settings.
1Select Settings using the steering
wheel buttons, or .
2 Hold the SET button depressed until a
chime sounds.
3Select ESP.
4 Press the SET button.
5Select ON or OFF.
End by pressing the SET-button.
Go back/modify using the CLR-button.
Stability control failure.
Contact service.
NOTEChanges to the chassis, such as a
change of wheels, shock absorbers or
springs, could affect the function of the
ESP
® system.
Always consult a workshop before chang-
ing any chassis components. We recom-
mend that you contact a Saab dealer.
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207 Car care
Bosch ME9 engine management
system, V6 engineThe Bosch ME9 engine management
system is a system that combines sequen-
tial multiport fuel injection, electronic distrib-
utorless ignition and turbocharger boost
pressure control into one system and intake
camshaft phasing control.
The ME9 engine control module (ECM)
monitors many different engine parameters
such as:
Charge air pressure.
Intake air temperature.
Crankshaft position.
Engine coolant temperature.
Throttle position.
The oxygen content of the exhaust gases.
By processing all of this information, the
ME9 system can control fuel injector open-
ing duration, ignition timing, intake camshaft
phasing and turbocharger boost pressure to
provide excellent engine performance while
maintaining low emissions and fuel con-
sumption.
ORVR (Onboard Refueling Vapor
Recovery)All hydrocarbons formed when refueling will
be recovered by the car and not released
into the atmosphere. The hydrocarbons are
absorbed in an evaporative emission canis-
ter. When the engine is subsequently
started, the evaporative emission canister is
gradually purged as air is sucked into it
through a shut-off valve. The hydrocar-
bon/air mixture passes through the evap
canister purge valve and into the engine
where it is burned. “Refueling”, see
page 159.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked 3 times.
NOTEThe ME9 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) light in
the main instrument illuminates, the ME9
ECM has detected a problem. The car will
continue to operate, but performance
may be diminished. You should have your
car checked by a workshop as soon as
possible. We recommend that you con-
tact a Saab dealer.
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214 Car careBrake/clutch fluid and
brake padsCheckingBrake fluid should be changed according to
the service program. Refer to the Warranty
and Service Book.
The brake and clutch fluid reservoir is trans-
parent to facilitate checking of the fluid level.
The fluid level should lie between the MAX
and MIN marks.If the level drops too low, the following
message appears on the SID:
Top up as necessary with DOT 4 brake
fluid. Do not use DOT 5 fluid.
Use only new brake fluid from a sealed
container.
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.
If the brake fluid should require chang-
ing, this must be carried out at a Saab
dealer. We recommend that you contact
a Saab dealer.The foot brake and parking brake are
self-adjusting.
It is not possible to detect, through abnormal
pedal or parking brake lever travel, whether
the brake pads are worn and need replac-
ing. It is therefore essential that brake pads
be checked regularly, as specified in the
service program.
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.
Brake fluid level low.
Make a safe stop.
Brake fluid reservoir
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248 Car care
Uniform Tire Quality GradingQuality grades can be found where applica-
ble on the tire sidewall between tread shoul-
der and maximum section width. For exam-
ple:
Treadwear 200 Traction AA
Temperature A
The following information relates to the
system developed by the United States
National Highway Traffic Safety Administra-
tion, which grades tires by treadwear, trac-
tion and temperature performance. (This
applies only to vehicles sold in the United
States.) The grades are molded on the side-
walls of most passenger car tires. The Uni-
form Tire Quality Grading system does not
apply to deep tread, winter-type snow tires,
space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12
inches (25 to 30 cm), or to some limited-pro-
duction tires.
While the tires available on General Motors
passenger cars and light trucks may vary
with respect to these grades, they must also
conform to federal safety requirements and
additional General Motors Tire Perfor-
mance Criteria (TPC) standards.
NOTEWide wheels and tires with side walls that
are too low can:
be damaged in potholes, etc.
cause springs, shock absorbers and
wheel bearings and body mountings
to be overloaded.
affect the function of the ESP
®.
The speed and load limits of the tires
must not be exceeded; see page 253.
Wheels larger than 17" must not be fitted
on the Saab 9-3 for reasons above. The
permissible offset is 1.61 inch (41 mm).
WARNING
Mixing tires could cause you to lose con-
trol while driving. If you mix tires of differ-
ent sizes or types (radial and bias-belted
tires), the vehicle may not handle prop-
erly, and you could have a crash. Using
tires of different sizes may also cause
damage to your vehicle. Be sure to use
the same size and type tires on all wheels.
It’s all right to drive with your compact
spare temporarily, it was developed for
use on your vehicle. See “Compact
spare” on page 260.
WARNING
If you use bias-ply tires on your vehicle,
the wheel rim flanges could develop
cracks after many miles of driving. A tire
and/or wheel could fail suddenly, causing
a crash. Use only radial-ply tires with the
wheels on your vehicle.
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266 Car care
Safety beltsCheck the function of the safety belts regu-
larly as follows:
Hold the diagonal strap and pull it sharply.
The safety belt should lock and it should
not be possible to withdraw it further.
Check the anchorage points in the floor.
They must not have suffered rust damage.
If a belt is worn or has any fraying edges, it
should be replaced.
Safety belts must not come into contact with
substances such as polishes, oil or chemi-
cals. If the belts get dirty, wash them with
warm water and a detergent or have them
replaced.
Upholstery and trimTo remove fluff and hairs from the seats,
door armrests and headlining, use a
vacuum cleaner, a moist lint-free cloth, or a
clothes brush. Remove spots and dirt using
a cloth moistened with lukewarm soapy
water.
When using a stain remover, always work
from the outside towards the center to avoid
leaving a ring. If a soiled ring or spot should
remain, it can usually be removed using
lukewarm soapy water or water alone.
Spots left by liquids, such as soft drinks or
thin oil, must be removed at once with an
absorbent material, such as kitchen towel-
ling. Then clean with a stain remover.
White spirit is recommended for removing
grease and oil stains. A medium stiff brush
may also be used.
WARNING
If the car is involved in a crash, the safety
belts, belt pretensioners and other asso-
ciated components must be inspected.
We recommend that you contact a Saab
dealer.
Never make any alterations or repairs to
the safety belts yourself. We recommend
that you contact a Saab dealer.
Tightening sequence, wheel boltsGrease the surfaces indicated with a thin
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293 Technical data
Suspension
Steering
Brake systemSpring type, front and rear_____________ Coil springs
Maximum deflection of springs:
Front ____________________________ 7.0'' (178 mm)
Rear ____________________________ 8.3'' (212 mm)
Dampers, front and rear ______________ Oil and gas-filled
twin-tube
Steering___________________________ Power-assisted
steering gear of
rack-pinion type and
telescopic jointed
steering column
Number of turns, lock to lock ___________ 2.97
Oil type ___________________________ Power steering fluid
CHF 11S or
CHF 202
Foot brake (ABS)____________________ Hydraulic disc
brakes with vacuum
servo unit. Diago-
nally split circuits;
ventilated discs on
front wheels (some
variants also have
ventilated rear
discs). EBD function
(see page 173).
Park brake _________________________ Acts on rear wheelsBrake fluid _________________________ To DOT 4.
Do not use DOT 5.
Disc diameter:
Front ____________________________ 11.9 in.
(302 mm) **)
Front3 *) ________________________ 12.4 in.
(314 mm) **)
Rear ____________________________ 10.9 in.
(278 mm)
Rear3 *) ________________________ 11.5 in.
(292 mm) **)
Total friction area of brake pads:
Front ____________________________ 9.30 in.² (60 cm²)
Front3__________________________ 9.61 in.² (62 cm²)
Rear ____________________________ 4.96 in.² (32 cm²)
*) 15" wheels and 16" aluminium wheels
must not be fitted to these variants since
the diameter of the brake discs does not
allow this.
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303 Index
Index
AABS brakes
____________________ 173
ACC
_________________________ 108
Adjustment, steering wheel
________ 120
Air filter
_______________________ 211
Airbag
_________________________ 32
Anchorage eyes, SportSedan
______ 141
Anti-corrosion treatment
__________ 271
Antilock braking system __________ 173
Anti-spin
______________________ 175
Ashtrays ______________________ 136
Autochecking of lights, warning and
indicator lights
__________________ 87
Autodimming
_______________ 125
, 126
Automatic climate control (ACC)
____ 108
Automatic closing of moonroof
_____ 131
Automatic closing of windows, SportSedan
and SportCombi
_______________ 122
Automatic transmission
___________ 165
Automatic transmission, sport mode
_167
BBattery
_______________________ 216
Bedding-in of new brake pads
_____ 163
Before towing a trailer
____________ 193
Belt height, SportSedan and
SportCombi
____________________ 14Brake fluid, grade
_______________ 295
Brakes
________________________ 172
Braking _______________________ 172
Bulb changing
__________________ 222
Bulb table
_____________________ 236
Buying new tires
________________ 247
CCabin lighting, Convertible
_________ 78
Cabin lighting, SportSedan and
SportCombi
___________________ 133
Calibrating front electric windows with
pinch protection
________________ 78
Calibration of windows, SportSedan and
SportCombi
___________________ 123
Car alarm
______________________ 56
Car transport ___________________ 199
Care of air conditioning
___________ 274
Cargo guard
___________________ 150
Cargo guard, SportWagon
________ 150
Cargo net, SportCombi
___________ 147
Change of address notification
_____ 282
Changing a tire
_________________ 262
Changing bulbs _________________ 222
Changing the battery, remote control
_54
Changing wiper blades
___________ 220
Checking the number of remote
controls
_______________________ 53
Checks before towing a trailer
_____ 193
Child safety
_____________________ 24
Child safety locks, rear doors
_______ 52Child seats
______________________ 24
Cigarette lighter
_________________ 136
Cleaning the engine bay
__________ 267
Cleaning upholstery
______________ 266
Closing the soft top manually,
Convertible
____________________ 68
Closing the soft top, Convertible
_____ 64
Clutch interlock
_________________ 164
Comfort opening of moonroof
______ 131
Comfort opening of windows,
SportSedan and SportCombi _____ 121
Compact spare
_________________ 260
Compact spare wheel fitted, driving
with
_________________________ 260
Compass
______________________ 129
Convertible _____________________ 61
Convertible, washing
_____________ 268
Coolant
_______________________ 212
Cornering headlights
______________ 99
Crash memory, see EDR
_________ 284
Cruise control
__________________ 171
Cup holder
_____________________ 134
DDate codes, tires
________________ 257
Deactivating rear windows,
SportSedan and SportCombi
_____ 123
Deactivating the passenger door
window button, Convertible
________ 77
Deactivating the rear window
switches
_____________________ 123
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