2003 SAAB 9-3 sensor

189 Car care
Bi-Xenon headlight, main and dipped beam (certain
variants only)Xenon headlights produce roughly three times as much light as
halogen bulbs and have a significantly longer service life.
The lamp units consist of a gas discharge lamp containing xenon.
When the lights are switched on a very high voltage activates the
xenon gas. The lamps soon reach full intensity.
Cars with Bi-Xenon headlights have automatic levelling. The level-
ling system comprises two sensors, one on the front suspension and
one on the rear suspension, and a control unit by the engine bay fuse
box. Headlight alignment is adjusted automatically to the car’s load
to prevent dazzling drivers in oncoming traffic.
If a fault is detected in the system, the following message will be dis-
played on the SID:
WARNING
Bi-Xenon headlights are high tension. All work on Bi-Xenon head-
lights, including changing bulbs, must be carried out by dealer
personnel.
Headlight levelling
malfunction.
Contact Saab dealer.
Contact a Saab dealer to have a Bi-Xenon
headlight changed
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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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205 Car care
Fuse panel in front of batteryNo. Amp. Function
160
MAXISecondary air injection pump (certain models)
2 20 Fuel pump; preheated oxygen sensors (lambda
probe)
310A/C compressor
430Main relay
Relays
1 Secondary air injection pump
2 A/C-compressor
3 Preheated oxygen sensors (lambda probe)
4 Main relay, engine (ECM/EVAP/injectors)
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207 Car care
Tire pressure
Note: Low tire pressure also causes prema-
ture tire wear and increased fuel consump-
tion.
Adjust the tire pressure to match the current
load and speed of the car (see page 245).
The stated tire pressures apply to cold tires,
i.e. tires that are the same temperature as
the outside air temperature. Tire pressure
increases as the tires become warm (e.g.
during highway driving) by approximately
0.3 bar (4 psi). When the temperature of the
tires changes by 50°F (10°C), the tire pres-
sure will change 0.1 bar (2 psi).
Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
Soft tires will cause faster wear than over-
pressurized tires.
If a valve is leaking, simply unscrew it and fit
a new one.
Note: Remember to adjust the tire pressure
if you change the load in the car or intend to
cruise at a speed that is substantially differ-
ent from normal.
Automatic tire pressure monitoring(option, certain variants only)
The pressure monitoring system consists of
a sensor in each wheel, a detector in each
wheel housing and a receiver. The sensors
are located inside the wheels directly adja-
cent to the air valves.
WARNING
Check the tire pressure at least once a
month and before long journeys. Under-
inflation can result in:
 punctures
 separation of the tire and tread
 damage to the sidewalls
 damage to the rims on poor roads
 poor handling characteristics.
WARNING
The system is intended to aid the driver.
The driver is always ultimately responsi-
ble for ensuring that the tire pressure is
correct.NOTICEGreat care must be taken when changing
tires so as not to damage the sensors that
are integrated in the valves.
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208 Car careThe receiver is located in the trunk. Tire
pressure information is sent wirelessly to
the receiver.
The system checks the tire pressure when
the car is travelling over 18 mph (30 km/h).
The system is "self-learning", which means
that the position of the wheels can be
changed without requiring adjustments to
the monitoring system. The spare wheel
does not have a sensor.
The sensor batteries have an average life of
10 years. The batteries cannot be changed
but require the sensor units to be replaced.
The system does not warn if a tire is overin-
flated.
If the tire pressure drops
If the tire pressure drops 0.3 bar (4 psi)
below the recommended pressure, the SID
will issue a warning as to which tire is
affected.
Adjust the tire pressure as soon as possible.If the tire pressure continues to drop, the
SID will issue a warning alarm when the
pressure is 0.6 bar (9 psi) below the recom-
mended value.
Reduce speed (avoid heavy braking and
violent steering wheel movements) and
stop the car as soon as it is safe to do so.
Change the wheel. Tire pressure low,
front left.
Check tires.
Flat tire front left.
Make a safe stop.
Valve with sensor Valve without sensor
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209 Car care
Malfunction
The message shown above will be dis-
played on the SID if:
 a wheel without pressure sensor is fitted
(e.g. spare wheel)
 one, two or three pressure sensors are
broken or missing
 two or more detectors are missing or
broken
 the receiver malfunctions
 a fault arises in the system.
The message shown above is not displayed
if none of the wheels have sensors, such as
if winter wheels without sensors are fitted.
Shifting the wheelsBecause of front wheel drive, the front tires
tend to wear faster than the rear ones. New
tires should always be fitted in pairs, so that
tires on the same axle have the same
amount of tread.
The wheels should be marked, L (left) and
R (right), when changing between summer
and winter (snow) tires. This ensures that
the direction of rotation of the wheels is the
same when they are refitted. Fit the tires in
best condition to the rear wheels.
Store wheels lying flat or hanging – never
standing upright.
Tire markingsAn example of the meaning of the different
markings in a tire size is given below for a
tire size of 195/65 R15 91H: Tire pressure
system failure.
Contact Saab dealer.
WARNING
When fitting just one new pair of tires,
these should be fitted to the rear wheels,
as these are more critical to the direc-
tional stability of the car (e.g. on braking
or in a skid). The existing rear wheels
should therefore be moved to the front.
Always move rear left to front left and rear
right to front right, so that the direction of
rotation remains the same.
195 Tire section width, mm
65 Aspect ratio, i.e. the section height
as a percentage of the section
width
R Radial ply
15 Wheel rim diameter 15 in at bead
seats
91 Tire load index
H Speed rating
Tire load indices
91 Tire approved for max. 1355 lbs.
(615 kg)
93 Max. 1433 lbs. (650 kg)
94 Max. 1477 lbs. (670 kg)
Speed ratings
S Tire approved for speeds up to
110 mph (180 km/h)
T Max. 118 mph (190 km/h)
H Max. 130 mph (210 km/h)
V Max. 149 mph (240 km/h)
W Max. 168 mph (270 km/h)
Y Max. 186 mph (300 km/h)
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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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