2002 SAAB 9-3 warning

166 Starting and drivingTraction Control SystemHow the system works The traction control system (TCS) is
designed to minimize wheelspin. This
enables the car to achieve the best possible
grip and, hence, maximum tractive effort,
together with greater stability.
The TCS system uses information from the
ABS system’s wheel sensors to detect
when the front (driving) wheels are rotating
faster then the rear wheels. It then monitors
whether one driving wheel is rotating faster
than the other. If so, the faster wheel is
retarded until both wheels are rotating at the
same speed.
If the two front wheels are rotating at the
same speed but are turning faster than the
rear wheels, the torque from the engine is
reduced to eliminate the difference.
The process continues until all the wheels
are rotating at the same speed. The advantages of the TCS system 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 sur-
faces (e.g. one slippery and one dry). The
TCS then functions like an electronic dif-
ferential lock.
 When the car is pulling away or accelerat-
ing on a slippery road, in which case the
TCS eliminates wheelspin. The same
applies when the car is reversing.
 On cornering, if there is a tendency for the
inner front wheel to rotate faster than the
other wheels.
 On overtaking.
TCS OFF The indicator on the main instrument
panel will come on:
 If a fault has been detected and the
system has therefore been switched off.
 If there is a fault in the ABS system.
 If the system has been switched off man-
ually.
The indicator light will also come on for
4 seconds when the ignition key is turned to
ON, while an internal system check is per-
formed. TCS indicator The in the tachometer comes on when
the system is operative, i.e. when the
wheels are not rotating at the same speed.
The fact that the TCS system is operative
indicates that the limit for grip has been
exceeded and that the driver must exert
greater care.
WARNING
When driving normally, the TCS helps to
imrove the safety of the car. This does
not mean that car can be driven faster.
The same care and prudence normally
applied should be displayed on corner-
ing and when driving on slippery roads.
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168 Starting and drivingParking brakeThe parking brake lever is located between
the front seats. The brake acts on the rear
wheels. When the parking brake is on, the
indicator lamp on the main instrument panel
will be lit.
To release the brake, lift the lever slightly,
press the pawl button, and let the lever
down.
Parking
WARNING
Always apply the parking brake when
the car is parked.
Always apply the parking brake
before removing the ignition key.
 Never use the parking brake while the
car is moving.
WARNING
 Do not leave children or pets unat-
tended in the car. In warm, sunny
weather, the temperature inside the
car can reach 160–180°F (70–80°C).
 Park where the vehicle will not create
an obstruction or a hazard to other
road users.
 Do not park on dry grass or other com-
bustible material. The catalytic con-
verter gets very hot and could start a
fire.
 Apply the parking brake.
 Shift into Reverse for manual trans-
mission; for automatic transmission:
move selector lever to P (Park)), and
remove the ignition key. Lock the car.
NOTESaab 9-3 Viggen: The body design
together with the relatively low ground
clearance of the car means that great
care must be taken during parking to
avoid damage to the under part of the
bumper.
IB1269
IB982
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170 Starting and drivingEconomical motoringFactors affecting fuel consumption Fuel consumption is greatly affected by the
general driving conditions, the way in which
the car is driven and at what speeds, the
weather, the state of the road, the condition
of the car, etc. Breaking-in Fuel consumption may be somewhat higher
during the break-in period (the first 3,000–
4,000 miles (5,000–7,000 km). Weather conditionsFuel consumption can be as much as 10 %
lower in summer than in winter. The higher
consumption in cold weather is explained by
the longer time it takes for the engine to
reach normal operating temperature, and
for the transmission and wheel bearings to
warm up. Fuel economy is also affected by
the distance driven: short journeys of
3-5 miles (5-8 km) do not give the engine
enough time to reach normal temperature.
Strong winds can also affect fuel consump-
tion. How to read the graph:
If fuel consumption with the engine at
normal temperature is 28 mpg
(10l/100 km), the actual fuel consumption 3
miles (5 km) after the engine has started
from cold will be:
– 23.5 mpg (12l/100 km) at outside temp.
of 68°F (20°C) (increase of 20%)
– 17.7 mpg (16l/100 km) at outside temp.
of 32°F (0°C) (increase of 60%)
– 14 mpg (20l/100 km)) at outside temp. of
–4°F (–20°C) (increase of 100%)
As can be seen, both the distance travelled
by the car and the outside temperature have
a major impact on fuel consumption after the engine has started from cold. Thus, if the
car is mainly used for short journeys of
3–5 miles (5–8 km), the fuel consumption
will be 60–80 % higher than normal.
Driving technique To obtain the best running economy, not
only regarding fuel consumption but gen-
eral wear also, regular service is required.
 High speed, unnecessary acceleration,
heavy braking and much low gear work all
gives rise to higher fuel consumption.
 Frequent gear changing in traffic, starting
in cold weather, the use of studded tires
and roof racks, and towing a trailer all
increase fuel consumption.
 Do not run the engine when the car is sta-
tionary.
If idling, it will take much longer before the
engine becomes hot. Engine wear is
greatest during this warming-up phase.
Therefore drive away as soon as possible
after the engine is started and avoid high
revving.
WARNING
Never switch the engine off while driving
as the effect of the brakes and power
steering will be greatly reduced.
IB311
Percentage increase in fuel consumption
of engine starting from cold compared to
engine at normal temperature
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172 Starting and driving Check the anti-freeze in the engine cool-
ant, see page 192.
The car´s trip computer will warn you when
there is a risk of slippery conditions. For fur-
ther information on this function, see page
69.
The car is equipped with tires designed to
provide optimum grip on both wet and dry
roads, although this has been achieved at
the expense of somewhat reduced grip on
snow and ice. For regular driving on snow
and ice, we therefore recommend that
winter (snow) tires be fitted.
Winter (snow) tires, particularly studded
tires (where use is legally permitted), gener-
ally make driving safer on snow and ice. Acquaint yourself with the legal provi-
sions governing the use of different
types of winter tires and snow chains.
Studded tires are not allowed in some
countries.
If winter tires are installed, the same type
must be installed on all wheels. Your Saab
dealer will be pleased to advise you on the
best tires for your car.
Remember that tires age. It may therefore
be necessary to change them before they
reach the legal wear limit, as they gradually
lose their friction properties. Date code, see
page 214.
The best response if the car gets into a
front-wheel skid is to freewheel (manual
gearbox only), i.e. disengage the clutch (so
that the wheels are neither driven nor
braked by the engine) and carefully steer
the wheels in the direction you want to go.
If the car has an automatic transmission you
should lift off the accelerator somewhat and
carefully steer the wheels in the direction
you want to go.
In a rear-wheel skid, steer into the skid, i.e.
in the same direction as that in which the
back is sliding.
Tire chainsIf you want to fit tire chains (where legally
permitted) they should only be installed to
the tires recommended under ”Technical
data” (see page 242).
Consult your Saab dealer for details about
approved tire chains.
WARNING
 Do not exceed 30 mph (50 km/h)
when tire chains are fitted.
 Tire chains can reduce the directional
stability of the car.
 Tire chains must not be used on the
rear wheels.NOTE Check the links frequently for wear.
 Check that the chains do not contact
the wheel-arch liner at full lock.
 See section "Technical data", page
242, for information on allowable
wheel dimensions for the fitting of tire
chains.
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173 Starting and driving
Driving in hot weather Always check the coolant level before
starting a journey. When the engine is
cold, the coolant must not be above the
KALT/COLD mark on the expansion tank.
 At the end of a journey, if the engine has
worked hard, allow it to idle for two or
three minutes before switching it off.
If the needle on the temperature gauge
enters the red zone:
1 Bring the car to a standstill but leave the
engine running. Do not remove the cap
on the expansion tank even if the tank is
empty. The engine temperature should
decrease. If the temperature continues
to rise with the engine idling, the engine
must be switched off. 2 If the engine is idling and the needle on
the temperature gauge falls, wait until a
normal temperature is shown (about in
the middle of the scale) before switching
off the engine. If the coolant needs top-
ping up, unscrew the cap on expansion
tank carefully.
Top up, as necessary, ideally with a
50/50 mixture of coolant and water. Use
a Saab-approved coolant. If only water
is available, use that, but remember to
have the coolant mixture checked as
soon as possible.
3 As soon as possible, have the cooling
system checked by an authorized Saab
dealer.
Towing a trailerTrailer hitch attachment Trailer hitch attachments are available as
accessories. These are designed for a max-
imum trailer weight of 3500 lbs (1588 kg),
with trailer brakes, see also page 236.
Use only the electrical trailer hitch connec-
tor provided in the trailer hitch kit.
Saab recommends:
 Use a Saab original hitch kit attachment
which is designed and tested by Saab.
 Consult your Saab dealer for the right
hitch kit for your car.
WARNING
Always undo the expansion tank filler cap
carefully, releasing the pressure and any
vapor before removing the cap com-
pletely.
NOTEUse only a genuine Saab trailer hitch and
wiring, since other wiring methods can
cause expensive damage to the car’s
body and electrical system.
Consult an authorized Saab dealer for
guidance on how to connect the trailer
hitch electrical system.
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174 Starting and driving
Trailer weightMaximum recommended trailer weights for
different gradients, for best comfort and
driveability for manual and automatic cars,
are shown in the drawing.
Make sure you are familiar with the law
regarding speed limits for towing, maxi-
mum trailer weights, trailer-braking
requirements, and also any special
driving-license provisions
(see also page 236).
The specified trailer weights and gradients
assume you are operating in hilly terrain and
therefore apply only to short trips.
NOTESaab 9-3 Viggen cannot be equipped
with a trailer hitch because of the design
of the body and chassis.
WARNING
When towing a trailer, do not attempt to
negotiate a hill having a gradient in
excess of 15%. The weight distribution
over the front wheels of the car will be
insufficient to prevent wheelspin, making
further progress impossible.
In addition, the parking brake may not
always be able to hold the car and trailer
securely, with the result that the wheels
can start to slide downhill.
IB1691
Maximum recommended trailer weights
for different gradients
IB1270
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175 Starting and driving
Recommendations for driving in
hilly terrainThe following time limits are based on the
capacity of the cooling system in warm
weather, i.e. approximately 86°F (30°C).
The following time limits are based on the
capacity of the cooling system in hot
weather, i.e. approximately 104°F (40°C).It is important to consider the following when
driving a car with automatic transmission up
long inclines.
Use Normal mode when driving with a cara-
van or trailer on hilly roads. The adaptive
gear change pattern function will prevent
the transmission overheating.
Rises in coolant temperature are indicated
by the temperature gauge in the main instru-
ment panel.
The following may also occur:
 A/C compressor is switched off
 Gear change pattern is altered
 The CHECK message TRANSMISSION
OVERHEATING appears on the SID
If TRANSMISSION OVERHEATING
appears on the SID, stop the car as soon as
it is safe to do so and wait until the message
has been extinguished. When driving sub-
sequent to the transmission oil overheating,
select either 3rd gear or Drive, whichever
will allow the engine to run at 3,000 rpm and
maintain the speed of traffic or a safe speed;
see page 159.Do not drive continuously with the WINTER
mode selected in hilly country when you are
towing a trailer, as this will increase fuel con-
sumption and risk overheating the transmis-
sion.
Driving considerationsAlways take extra care when towing a
trailer, as the car’s handling will be different
and its braking effect reduced. The trailer’s
braking system and suspension also have a
considerable effect on these characteris-
tics, see also "Driving with a load" page
178.
Select position 1 when descending steep
hills. Gradient
of hill, % Maximum
trailer
weight, lbs.
(kg)Maximum dura-
tion, minutes
6-7 3330 (1500) Unlimited
8-9 3330 (1500) 15 max.
10-15 1890 (850) 15 max.
Gradient
of hill, % Maximum
trailer
weight, lbs.
(kg)Maximum dura-
tion, minutes
6-7 2000 (900) Unlimited
8-9 2000 (900) 15 max.
10-15 1000 (450) 15 max.
WARNING
Remember to use engine-braking (selec-
tor position 1, 2, or 3) to spare the brakes
when you are driving on a long or steep
downhill slope.
Brake failure can result from overheated
brakes!
NOTEIf the “Automatic transmission fault
indicator” warning comes on, cease
towing until the problem has been recti-
fied.
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176 Starting and drivingTrailer hitch loadThe weight distribution on the trailer makes
a lot of difference to the handling properties
of the car and trailer combination.With sin-
gle-axle trailers, whenever possible, con-
centrate the load over the axle and keep it
as low as possible.
The trailer should be loaded so that the
maximum load on the towbar ball is 5% to
7% of the trailer weight with a maximum per-
missible tongue weight of 165 lbs (75 kg).
Note that this load must be added to the total
load for the car. If this now exceeds the
specified load capacity, the load in the trunk
will have to be reduced by a corresponding
amount.
Driving with a roof rack
loadThe maximum permissible roof load is
220 lbs (100 kg). Note that the roof load is
included in the car’s maximum permissible
load (see page 235).
Strong, sturdy roof carriers designed spe-
cially for the car are available from your
Saab dealer. Always secure the roof load
safely.
WARNING
 A roof load will affect the car’s center
of gravity and aerodynamics. Be
aware of this when cornering and driv-
ing in crosswinds.
 Adjust your speed to the prevailing
conditions.
 Due to higher aerodynamic drag, fuel
economy may suffer when driving with
a roof rack.
IB880
Distribution of load in trailer aLight
b Moderate
cHeavy
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