ABS SAAB 9-3 2003 User Guide

146 Starting and drivingElectronic Stability
Program (ESP)Anti-skid systemThe Electronic Stability Program employs
both the antilock braking system (ABS) and
the traction control system (TCS). It is a
safety system that helps the driver to stabi-
lize the car in unusual circumstances that
can otherwise be difficult to handle.
How the ESP system worksThe Electronic Stability Program 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 prevent the driving wheels from
spinning. The car has sensors that measure
wheel speed, yaw rate, lateral acceleration,
steering wheel position and braking pres-
sure. 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 should be engaged.
If this direction does not agree with that
intended by the driver, calculated from the
steering wheel position, the ESP is
engaged.
The ESP improves the driver’s chances
of retaining control over the car in critical
situations.
WARNING
When driving normally, the ESP system
helps to improve the car’s directional
stability. The ESP must not be regarded
as a system to enable the driver to main-
tain higher speeds. The same precau-
tions 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 to avoid
a skid
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147 Starting and driving
ESP OFF
lights up under the speedometer if:
 a fault has been detected and the system
has therefore been switched off
 the system has been switched off
manually
 when the remote control is turned to the
ON position, the lamp is lit for about
4 seconds while the system performs
self-diagnosis.
ESP indicator lightThe light under the speedometer
comes on for a short period of time when the
ESP system is operative.
Operation of the ESP indicates reduced
cohesion between the tires and the road,
and that extra care should be taken by the
driver.Turning ESP system offThe system can be turned off manually with
the ESP button, whereupon the light
under the speedometer will come on. The
car must be travelling slower than 35 mph
(60 km/h). The TCS is also disengaged.
The ESP is always engaged during braking,
even if it has been switched off manually
with the ESP button.If a fault is detected in the system, the
following message will be displayed on
the SID:
The cruise control system (if active) will
automatically be disengaged if the ESP is
operative.
Stability control failure.
Contact Saab dealer.
NOTICEChanges to the chassis, such as a
change of wheels, shock absorbers or
springs, could affect the function of the
ESP system.
Always consult your Saab dealer before
changing any chassis components.
ESP button
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174 Car careSaab 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.
 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)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 hydrocarbon/
air mixture passes through the evap canis-
ter purge valve and into the engine where it
is burned. "Refueling", see page 128.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked 1 time. Otherwise, it is possible for
the Engine malfunction (CHECK ENGINE)
light to illuminate. The following message
will appear on the SID:
NOTICEThe 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) light in
the main instrument illuminates, 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.
Tighten fuel filler cap.
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180 Car careNote:
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/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.
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.
NOTICEIf the cooling system needs topping up,
mix the antifreeze with the appropriate
quantity of drinking water or distilled
water before adding it to the system.
If undiluted 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 ther-
mostat has opened to allow full circula-
tion.
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
regularly, as specified in the service
program.
Brake fluid reservoir
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206 Car careWheelsAlternative wheels and tiresIf you wish to fit other tires or wheels than
those supplied with the car, consult your
Saab dealer first as to the possibilities
available.
Wheels/tires combinations that are not
approved by Saab can negatively affect the
car’s directional stability, steering and brak-
ing in both wet and dry conditions.The wheels and tires have been carefully
matched to the characteristics of the car and
play a key role in its outstanding roadhold-
ing and handling.
Do not take it for granted that a wheel/tire
combination will work in the best possible
way, just because it can be fitted to the car.
To ensure that the speedometer is as accu-
rate as possible it should be reprogrammed
if wheels of a different dimension are fitted.
Contact a Saab dealer.
NOTICEAlways consult your Saab dealer before
changing the car’s wheels or tires on your
Saab.
Wide 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
 cause the wheels to come into contact
with chassis and body components
 affect the function of the Electronic
Stability Program (ESP).
The speed and load limits of the tires
must not be exceeded; see page 209.
Wheels larger than 18" must not be fitted
on the Saab 9-3. The permissible offset is
1.61 inch (41 mm).
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217 Car care
Flat spottingAll tires get hot, especially on long journeys
or when the car is driven hard. After the car
has been parked with hot tires and the tires
have cooled down, a flat spot can form in the
tire, where it is in contact with the ground.
The same can occur if the car has not been
moved for a long time.
Flat spots can cause vibration that can be
felt through the steering wheel, similar to
that experienced when the wheels need bal-
ancing.
Flat spots of this type disappear once the
tires get hot again, usually after 10–15 miles
(20–25 km) of driving at cruising speed.
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 centre 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 at
a Saab dealer.
Never make any alterations or repairs to
the safetybelts yourself but visit a Saab
dealer.
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223 Car care
1 A-pillar trim: PP, PP/EPDM
2 Windshield trim: PP, PP/EPDM
3 Seals: EPDM
4 Rear window seal: PUR
5 C/D-pillar trim: PP
6 Tail light: PMMA
7 Rear bumper:
shell – PP/EPDM
core – expanded PP
8 Fuel tank: PE
9 Side window seal: PP/EPDM
10 A-pillar trim, textile: PC/ABS
11 Side trim: PVC
12 Rearview mirror: ABS
13 Sill scuff plate: PP/EPDM
14 Wheel arch liner: PP
15 Wheel cover: PA
16 Direction indicator lamp lens: PMMA
17 Front spoiler: PP/EPDM
18 Front bumper:
shell – PP/EPDM
core – expanded PP
19 Washer fluid reservoir: PE
20 Grille: ABS
21 Fan shroud: PP
22 Scuttle panel finisher: PC/ASA
19 2022
211234
18
1716 151412
1311 7
10 9 8 6 5
ABS Acr ylonitrile-butadiene-styrene
ASA Acrylonitrile-styrene (acrylic
plastic)
EPDM Ethylene-propylene rubber
PA Polyamide (plastic)
PC Polycarbonate (plastic)
PE Polyethylene
PMMA Polymethyl methacrylatePOM Acetal plastic
PPO Polyphenylene oxide (plastic)
PP Polypropylene
PUR Polyurethane
PVC Polyvinyl chloride
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242 Technical dataSuspension
SteeringBrake 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 ______________ Gas-filled dampers
Steering___________________________ Power-assisted
steering gear of
rack-pinion type and
telescopic jointed
steering column
Number of turns, lock to lock ___________ 3.0
Oil type ___________________________ Power steering fluid
CHF 11SFoot 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 142).
Handbrake ________________________ Acts on rear wheels
Brake fluid _________________________ To DOT 4.
Do not use DOT 5.
Disc diameter, 2.0t:
Front ____________________________ 11.22 in. (285 mm)
Rear ____________________________ 10.94 in. (278 mm)
Total friction area of brake pads:
Front ____________________________ 9.30 in.² (60 cm²)
Rear ____________________________ 4.96 in.² (32 cm²)
Disc diameter, 2.0 Turbo:
Front ____________________________ 11.89 in. (302 mm)
Rear ____________________________ 11.57 in. (294 mm)
Total friction area of brake pads:
Front ____________________________ 9.30 in.² (60 cm²)
Rear ____________________________ 4.96 in.² (32 cm²)
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251 Index
Index
AA/C
__________________________ 82
ABS brakes
___________________ 142
ACC
_________________________ 84
Adjustment, steering wheel
________ 98
Air conditioning
_________________ 82
Air filter
______________________ 178
Air pressure, tyres
______________ 207
Airbag
________________________ 26
Anchorage eyes
_______________ 118
Anti-corrosion treatment
_________ 220
Antilock braking system _________ 142
Anti-spin
_____________________ 144
Ashtrays _____________________ 108
Autochecking of lights, warning and
indicator lights
_________________ 58
Autodimming
______________ 111
, 112
Automatic climate control (ACC)
____ 84
Automatic transmission
__________ 134
Automatic tyre pressure monitoring

207
BBattery
______________________ 182
Bedding-in of new brake pads
____ 132
Before towing a trailer
___________ 160
Bonnet
______________________ 172Bootlid, driving when open
_______ 163
Bootlid, opening
________________ 41
Brake fluid, grade ______________ 242
Brakes
_______________________ 141
Braking ______________________ 141
Bulb changing
_________________ 188
Bulb table
____________________ 198
CCabin lighting
_________________ 105
Car alarm
_____________________ 46
Car transport __________________ 166
Care of air conditioning
__________ 225
Change of address notification
____ 232
Changing bulbs
________________ 188
Changing engine oil
____________ 177
Changing the battery, remote control
44
Changing wheels
______________ 214
Changing wiper blades
__________ 186
Checking the number of
remote controls
________________ 43
Checks before towing a trailer
____ 160
Child safety
____________________ 21
Child safety locks, rear doors
______ 42
Child seats
____________________ 21
Cigarette lighter
________________ 108
Cleaning the engine bay
_________ 218
Cleaning upholstery
____________ 217
Climate control system, manual
____ 79
Compact spare
________________ 212Compass
_____________________ 115
Condensation water, A/C
_________ 82
Coolant
______________________ 179
Cruise control
_________________ 140
Cup holder
____________________ 107
DDate codes, tyres
______________ 212
Deep water, driving through
______ 163
Direction indicator stalk switch _____ 75
Direction indicators
______________ 75
Donor battery, boost starting
______ 168
Door handles
___________________ 38
Door mirrors __________________ 110
Drive belt
_____________________ 185
Drive belt, length
_______________ 240
Driver’s seat with memory
_________ 19
Driving at night
________________ 163
Driving in cold climates
__________ 155
Driving in deep water
____________ 163
Driving in hot climates ___________ 156
Driving techniques
______________ 153
Driving with a heavy load on
hilly roads
___________________ 136
Driving with a load
______________ 162
Driving with a roof load
__________ 161
Driving with the bootlid open
______ 163
Driving with the compact
spare wheel
__________________ 167
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