2003 SAAB 9-3 brake sensor

34 SafetyAirbag warning lamp Crash sensing
Crash sensing and diagnostic modules
have been used in automobiles since air-
bags were first produced. The technical
information gained from these modules can
be useful to understanding the circum-
stances that led to the airbag deployment. In
addition, information from many field events
can be used in the aggregate to help manu-
facturers and others better understand real
world crashes. This, in turn, can lead to
improved automotive safety.
Your vehicle is equipped with two electronic
frontal sensors, which helps the sensing
system distinguish between a moderate
frontal impact and a more severe frontal
impact. Your vehicle is also equipped with a
crash sensing and diagnostic module,
which records information about the frontal
airbag system. The module records infor-
mation about the readiness of the system,
when the system commands airbag inflation
and driver’s safety belt usage at deployment
or in a near-deployment crash. The module
also records speed, engine rpm, brake and
throttle data etc.
Servicing the airbag systemThe airbag system must be inspected as
part of the normal service program but oth-
erwise may be regarded as maintenance-
free.
WARNING
 If the airbag readiness light stays on
after you start your vehicle, it means
the airbag system may not be working
properly. See page 57.
 The airbags in your vehicle may not
inflate in a crash, or they could even
inflate without a crash.
 To help avoid injury to yourself or
others, have your vehicle serviced
right away if the airbag readiness light
stays on after you start your vehicle.
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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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201 Car care
Fuse panel in end of fasciaNo. Amp. Function
1 15 Steering wheel lock
2 5 Steering column unit; ignition switch
3 10 Hands-free; cabin CD changer; SID
4 10 Main instrument unit; manual climate control;
automatic climate control (ACC)
5 7.5 Control module in front doors; Park Brake Shift Lock
(automatic transmission)
6 7.5 Brake light switch
7 20 Fascia fuse panel; fuel filler door
8 30 Control module in passenger front door
9 10 Fascia fuse panel
10 30 Trailer socket; electrical socket in storage compart-
ment between seats
11 15 Data link connection (diagnostics)
12 15 Interior lighting incl. glove compartment
13 30 Accessories
14 20 Radio, sound system I; control panel,
Infotainment System
15 30 Control module in driver’s door
16 - -
17 - -
18 7.5 Manual climate control; fan
19 - -
20 7.5 Headlight levelling switch
21 7.5 Hands-free; brake light switch; manual climate
control; clutch pedal switch
22 30 Cigarette lighter
23 40 Cabin fan
24 7.5 Airbag control module
25 - -
26 5 Yaw sensor (cars with ESP)
27 - -
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202 Car careTrunk fuse panel, left-hand sideNo. Amp. Function
1–5 MAXI -
6 30 Control module in left rear door
7 30 Control module in right rear door
820Trailer
9--
10 30 Left-hand brake light; rear right turn signal; right tail
light; right reversing light; high-mounted brake light;
trailer lights
11 - -
12 - -
13 - -
14 - -
15 15 Seat heating, left seat
16 15 Seat heating, right seat
17 7.5 Autodimming rearview mirror; rain sensor; tire
pressure monitoring
18 15 Sunroof
19 7.5 Telematics (OnStar)
20 7.5 DVD player (navigation system)
21 7.5 Saab Parking Assistance (SPA); control module in
rear doors
22 30 Amplifier, sound system III
23 - -
24 10 Movement sensor; CD changer in trunk (accessory)
25 30 Electrically adjustable driver’s seat with memory
26 30 Right-hand stop light; rear left turn signal; left tail
light; rear fog light; left reversing light; license plate
lighting; trunk lighting; trailer lights
27 - -
28 - -
29 - -
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219 Car care
thoroughly at the end of winter. Clean the
underside of the car by hand if the car is usu-
ally washed in an automatic car wash with-
out special facilities for underbody cleaning.
Never wash or leave the car to dry in the
sun, but wipe it dry with a chamois leather
immediately after washing to avoid smears
and streaks.
Clean the inside of window glass using a
proprietary window cleaner. This is particu-
larly important when the car is new, as
upholstery and trim have a tendency to
sweat a little at first.
Keep the glass well polished, as this helps
to prevent misting.
Clean the outside of the windows with Saab
washer fluid. This is especially important if
the car has been washed in an automatic
car wash, as sometimes a wax treatment is
used that can contaminate the windshield
and impair the performance of the wipers.
Waxing and polishingDo not wax a new car during the first three
or four months. In fact, there is no need to
polish the car before the paintwork has
started to go dull through oxidation. Other
than in exceptional cases, do not use abra-
sive polishes containing a cutting agent on
a new car. Always wash the car thoroughly
before waxing or polishing.
Touching up the paintDamaged paintwork should be treated as
soon as it is discovered: the longer it is left,
the greater the risk of corrosion. The anti-
corrosion warranty does not cover corrosion
resulting from untreated defects.
Paintwork damage sustained in a crash is
usually extensive and can only be properly
restored by professionals.
However, you can repair small scratches
and stone chip damage yourself. The nec-
essary tools and materials, such as primer,
touch-up paint and brushes, are available
from your Saab dealer.
In the case of minor flaws in the paintwork,
where the metal has not been exposed and
an undamaged layer of paint remains,
touch-up paint can usually be applied
directly, after any dirt has been scraped
away using a pointed knife.
If corrosion has already set in, such as the
result of stone-chip damage, use a pointed
knife to scrape off all surface rust. If possi-
ble, the damaged area should be taken
back to the bare metal. The metal should
then be primed with two thin coats of primer
applied by brush.
After the primer has dried, apply several thin
layers of topcoat until the surface of the
repaired area is flush with the surrounding
paintwork.
Stir both primer and touch-up paint thor-
oughly before use and allow each coat to
dry before applying the next.
NOTICE Try your brakes on leaving a car wash.
Wet brake discs reduce the perfor-
mance of the brakes.
 Fixed antennae, such as for a mobile
phone, must be removed if the car
goes through an automatic car wash.
 Cars with Saab Parking Assistance:
Do not spray the sensors or closer
than 8 in. (20 cm) to the sensors with
a pressure washer, as this can
damage them.
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250 Technical data
Rear left seat backrest
unlocked.
Rear right seat backrest
unlocked.
Parking assistance malfunction.
Contact Saab dealer.
Parking assistance sensor
interference.
Close doors.
Left brake light failure
Left high beam failure.
Left low beam failure.
Rear fog light failure.
Right brake light failure.
Right high beam failure.
Right low beam failure.
High mounted brake light
failure.
Left front turn signal
failure.
Left rear turn signal
failure.
Right front turn signal
failure.
Right rear turn signal
failure.
Left rear position light
failure.
Right rear position light
failure.
Tire pressure
system failure.
Contact Saab dealer.
Tire pressure low,
rear left.
Check tires.
Tire pressure low,
rear right.
Check tires.
Tire pressure low,
front right.
Check tires.
Tire pressure low,
front left.
Check tires.
Flat tire rear left.
Make a safe stop.
Flat tire rear right.
Make a safe stop.
Flat tire front left.
Make a safe stop.
Flat tire front right.
Make a safe stop.
Time for service.
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253 Index
LLATCH (child safety)
_____________ 22
Labels and plates, location
_______ 246
Lashing eyes
__________________ 118
Laying the car up
______________ 150
Leather upholstery, cleaning
______ 218
Limp-home
___________________ 126
Limp-home, automatic transmission
137
Load carriers, roof
______________ 161
Load indices, tyres _____________ 209
Load-through hatch _____________ 117
Locking a car with flat battery
______ 41
Locks
________________________ 38
Long-term parking
______________ 150
Luggage compartment
__________ 116
Luggage compartment lighting
106
, 119
Luggage compartment lighting,
changing
____________________ 197
MMAXI fuses
___________________ 200
Main instrument panel
___________ 54
Main/dipped beam
______________ 72
Maintenance schedule __________ 230
Manual climate control ___________ 79
Manual gear selection ___________ 139
Manual gearbox
_______________ 133
Manual tripping of car alarm
_______ 49
Materials used in the car, reclamation
222Memory, driver’s seat
____________ 19
Milometer
_____________________ 59
Movement sensor, car alarm
______ 48
Mug holder
___________________ 107
NNight driving
__________________ 163
Number plate lighting, changing
___ 196
OORVR
_______________________ 174
Oil capacity, engine
_____________ 239
Opening handles
________________ 38
Opening the fuel filler flap manually
_52
Owner assistance
______________ 232
PPanic function, car alarm
_________ 49
Park Brake Shift Lock
___________ 135
Park Brake Shift Lock,
temporary override
____________ 137
Parking
______________________ 148
Parking aid ___________________ 151
Parking brake _________________ 148
Parking on a hill _______________ 149
Pinch protection, electric windows
_100
Pinch protection, sunroof
________ 104Plates and labels, location
________ 246
Polishing and waxing
____________ 219
Poly-V-belt
____________________ 185
Position lights __________________ 72
Power steering fluid, checking
_____ 181
Power steering fluid, grade
_______ 242
Pressure gauge
_________________ 61
Profiles, customized settings
_______ 64
Puncture, changing wheels _______ 214
QQuick guide, remote control
_______ 39
RRain sensor
____________________ 77
Rear fog light ___________________ 74
Rear seats, folding down
_________ 116
Rear towing eye
_______________ 165
Rear window heating
_____________ 83
Rearview mirrors
_______________ 110
Recirculation
___________________ 82
Recommendations for automatic
transmission, towing a trailer
____ 158
Recommendations for manual
gearbox, towing a trailer
________ 159
Recommended fuel grades _______ 128
Recommended snow chains ______ 243
Refueling
_____________________ 128
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