stop start SUBARU IMPREZA 2003 2.G Owner's Manual

Starting and operating
7-21
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Rear viscous limited slip differential (LSD) (WRX)
The LSD provides optimum distribution of power ac-
cording to the difference in revolutions between the
right and left rear wheels that may be caused by
certain driving conditions, thereby improving driving
stability on snow-covered, muddy or other slippery
roads.
CAUTION
Never start the engine while a tire on one
side is jacked up, as the vehicle may move. If one rear tire is spinning in mud, avoid
continued spinning at high speed as thiscould adversely affect the LSD. If a different size rear tire is temporarily
used (as in an emergency), it will adversely af-fect the LSD. Always replace it with a regularsize tire as soon as possible. Power steering The power steering system operates only when the
engine is running.If you lose power steering assist because the en-gine stops or the system fails to function, you can
steer but it will take much more effort. NOTE Right after the engine has been started and be- fore it has warmed up, you may hear a noisecoming from areas adjacent to the power steer-
ing pump which is located at the right-front area of the engine compartment. This noise is normal. It does not indicate power steering systemtrouble.
CAUTION
Do not hold the steering wheel at the fully
locked position left or right for more than five
seconds. This may damage the power steer- ing pump.

Starting and operating
7-22
Braking Braking tips
WARNING
Never rest your foot on the brake pedal while driving. This can cause dangerous overheat- ing of the brakes and needless wear on thebrake pads and linings.
When the brakes get wet
When driving in rain or after washing the vehicle, the
brakes may get wet. As a result, brake stopping dis-
tance will be longer. To dry the brakes, drive the ve-
hicle at a safe speed while lightly depressing thebrake pedal to heat up the brakes.
Use of engine braking
Remember to make use of engine braking in addi-
tion to foot braking. When descending a grade, if
only the foot brake is used, the brakes may start
working improperly because of brake fluid overheat-
ing, caused by overheated brake pads. To help pre-
vent this, shift into a lower gear to get stronger
engine braking.
Braking when a tire is punctured
Do not depress the brake pedal suddenly when a
tire is punctured. This could cause a loss of controlof the vehicle. Keep driving straight ahead while
gradually reducing speed. Then slowly pull off the
road to a safe place. Brake system
Two separate circuits
Your vehicle has two separate circuit brake systems.
Each circuit works diagonally across the vehicle. If
one circuit of the brake system should fail, the other
half of the system still works. If one circuit fails, thebrake pedal will go down much closer to the floor
than usual and you will need to press it down much
harder. And a much longer distance will be needed to stop the vehicle.
Brake booster
The brake booster uses engine manifold vacuum to
assist braking force. Do not turn off the engine while
driving because that will turn off the brake booster,
resulting in poor braking power. The brakes will continue to work even when the brake booster completely stops functioning. If this
happens, however, you will have to push the pedal

Starting and operating
7-24
CAUTION
The ABS system does not always decrease
stopping distance. You should always main- tain a safe following distance from other ve- hicles. When driving on badly surfaced roads, grav-
el roads, icy roads, or over deep newly fallen
snow, stopping distances may be longer for a
vehicle with the ABS system than one without. When driving under these conditions, there-
fore, reduce your speed and leave ample dis-tance from other vehicles. When you feel the ABS system operating,
you should maintain constant brake pedal
pressure. Do not pump the brake pedal since doing so may defeat the operation of the ABS system.
ABS system self-check
You may feel a slight shock in the brake pedal and
hear the operating sound of ABS from the engine
compartment just after the vehicle is started. This iscaused by an automatic functional test of the ABS
system being carried out and does not indicate any
abnormal condition.
ABS warning light
The ABS warning light comes on when the ignition
switch is turned to the “ON” position and goes out
after about two seconds.This is an indication that the ABS system is working
properly.
When driving with an insufficient battery voltage
such as when the engine is jump started, the ABS
warning light may come on. This is due to the low
battery voltage and does not indicate a malfunction.
When the battery becomes fully charged, the lightwill go out.

Starting and operating
7-28
as they may burn easily if they come near hot engine or exhaust system parts.Be sure to stop the engine if you take a nap
in the vehicle. If engine exhaust gas enters the
passenger compartment, occupants in the ve-hicle could die from carbon monoxide (CO) contained in the exhaust gas.
CAUTION
If your vehicle has a front underspoiler and rear underspoiler (both optional), pay atten- tion to blocks and other obstructions on the ground when parking. The underspoilerscould be damaged by contact with them. Cruise control (if equipped)
Cruise control enables you to maintain a constant
vehicle speed without holding your foot on the ac-
celerator pedal and it is operative when the vehicle
speed is 25 mph (40 km/h) or more. Make sure the
main switch is turned
“OFF” when the cruise control
is not in use to avoid unintentionally by setting the
cruise control.WARNING
Do not use the cruise control under any of the following conditions. This may cause loss of
vehicle control: driving up or down a steep grade
driving on slippery or winding roads
driving in heavy traffic

Starting and operating
7-30
To temporarily cancel the cruise con- trol
There are four ways to cancel the cruise control tem- porarily: Depress the brake pedal.
Pull the control lever in the “CANCEL” direction. (if
so equipped) Depress the clutch pedal (manual transmission
vehicles only). Shift the selector lever into the “N” position (auto-
matic transmission vehicles only).
To resume the cruise control after it has been tem- porarily canceled and with vehicle speed of about
20 mph (32 km/h) or more, push the control lever
upward in the “ACCEL, RESUME ” direction to return
to the original cruising speed automatically.
To turn off the cruise control
There are two ways to turn off the cruise control: Push the main switch again.
Turn the ignition switch to the “ACC” or “LOCK”
position (but only when the vehicle is completely stopped).
To change the cruising speed
To increase the speed (by control lever)
Push the control lever upward in the “ACCEL, RE-
SUME” direction and hold it until the vehicle reaches
the desired speed. Then, release the control lever.
The vehicle speed at that moment will be memo-
rized and treated as the new set speed.
When the difference between the actual vehicle
speed and the set speed is less than 4 mph (6.8
km/h), the set speed can be increased 1 mph (1.6
km/h) each time by pressing the control lever up-
ward in the “ACCEL, RESUME ” direction quickly
within 0.5 second.
To increase the speed (by accelerator pedal)
1. Depress the accelerator pedal to accelerate the
vehicle to the desired speed.
2. Push the control lever downward in the “SET,
COAST” direction once. Now the desired speed is
set and the vehicle will keep running at that speed
without depressing the accelerator pedal.
NOTE
If the difference between the actual vehicle speed when the control lever is pushed down-ward and the speed last time you set is less than

Driving tips
8-11
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cold weather. Heavy summer oil will cause harder
starting.
Keep the door locks from freezing by squirting themwith deicer or glycerin.
Forcing a frozen door open may damage or sepa-
rate the rubber weather strips around the door. If the
door is frozen, use hot water to melt the ice, and af-
terwards thoroughly wipe the water away. Use a windshield washer fluid that contains an anti-
freeze solution. Do not use engine antifreeze or oth-
er substitutes because they may damage the paint of the vehicle.
Before driving your vehicle
Before entering the vehicle, remove any snow or ice
from your shoes because that could make the ped-
als slippery and dangerous.
While warming up the vehicle before driving, check that the accelerator pedal, brake pedal, and all oth-
er controls operate smoothly. Clear away ice and snow that has accumulated un-
der the fenders to avoid making steering difficult.
During severe winter driving, stop when and where it is safe to do so and check under the fenders peri-
odically.
Parking in cold weather
Do not use the parking brake when parking for long
periods in cold weather since it could freeze in that
position. Instead, observe the following:
1. Place the shift lever in “1” or “R” for manual trans-
mission vehicles, and in “P” for automatic transmis-
sion vehicles.
2. Use tire stops under the tires to prevent the ve-
hicle from moving.
When the vehicle is parked in snow or when it
snows, raise the wiper blades off the glass to pre-vent damage to them.
When the vehicle has been left parked after use on
roads heavily covered with snow, or has been left
parked during a snowstorm, icing may develop onthe brake system, which could cause poor braking
action. Check for snow or ice buildup on the sus-
pension, disc brakes and brake hoses underneath the vehicle.
If there is caked snow or ice, remove it, being care-ful not to damage the disc brakes and brake hoses
and ABS harness.

Driving tips
8-13
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WARNING
Do not use the cruise control on slippery roads such as snowy or icy roads. This may
cause loss of vehicle control.
Wiper operation when snowing
Before driving in cold weather, make sure the wiper
blades are not frozen to the windshield or rear win-
dow. If the wiper blades are frozen to the windshield
or rear window, use the defroster with the airflow
control dial in the “t ” position and the temperature
control dial set for maximum warmth until the wiper
blades are completely thawed out. If your vehicle is
equipped with a wiper deicer, it is helpful to thaw the
windshield wiper blades. To thaw out the rear wiper
blade, use the rear window defogger.
When driving in snow, if frozen snow starts to stick
on the surface of the windshield despite wiper
operation, use the defroster with the airflow controldial in “t ” and the temperature control dial set for
maximum warmth. After the windshield gets warmed
enough to melt the frozen snow on it, wash it away
using the windshield washer.
Snow stuck on the wiper arm prevents the wiper from working effectively. If snow is stuck on the
wiper arm, pull off the road to a safe place, then
remove it. If you stop the car at road side, use the
hazard warning flasher to alert other drivers.
We recommend use of non-freezing type wiper blades (winter blades) during the seasons you
could have snow and sub-zero temperatures.
Blades of this type give superior wiping perfor-
mance in snowy conditions. Be sure to use blades
that are suitable for your vehicle.
Corrosion protection
Refer to the “Corrosion protection ” section (chapter
10). Snow tires
WARNING
When replacing original tires with winter
(snow) tires, make sure you use only the same size, construction and load range as the origi-nal tires listed on the tire placard. Using other
sizes and construction may affect speedome-ter/odometer calibration and clearance be-tween the body and tires. It also may be dan-

Driving tips
8-15
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chains — overconfidence because you are driving
with tire chains could easily lead to a serious acci- dent.
CAUTION
Tire chains cannot be fitted with optional
215/45 R17 tires for the WRX because of lack
of clearance between the tire and body.
Rocking the vehicle
If you must rock the vehicle to free it from snow,
sand, or mud, depress the accelerator pedal slightly
and move the selector lever back and forth between“D” and “R” repeatedly. Do not race the engine. For
the best possible traction, avoid spinning the wheels
when trying to free the vehicle.
When the road surface is extremely slippery, you
can obtain better traction by starting the vehicle with the transmission in 2nd than 1st (both for MT and
AT). Refer to the “Automatic transmission ” section in
chapter 7 for information on holding the transmis- sion in 2nd position. Loading your vehicle
WARNING

Never allow passengers to ride on the
folded rear seatback, in the trunk or in the car-
go area. Doing so may result in serious injury. Never stack luggage or other cargo higher
than the top of the seatback because it could tumble forward and injure passengers in theevent of a sudden stop or accident. Keep lug-
gage or cargo low, as close to the floor aspossible.

Driving tips
8-19
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front and rear Gross Axle Weight Rating (GAWR). See the “Loading your vehicle ” section in this chap-
ter for information on loading cargo into or onto your
vehicle. The maximum load limit of the cargo, cross-
bars and carrying attachment must not exceed 100
lb. (45 kg). Place the heaviest load at the bottom,
nearest the roof, and evenly distribute the cargo. Al-
ways properly secure all cargo.
CAUTION
For cargo carrying purposes, the roof rail
must be used together with a roof crossbar kit and the appropriate carrying attachment. The roof rail must never be used alone to carrycargo. Otherwise, damage to the roof or paint
or a dangerous road hazard due to loss of car-go could result. When using the roof crossbar kit, make sure
that the total weight of the crossbars, carryingattachment and cargo does not exceed the
maximum load limit. Overloading may cause
damage to the vehicle and create a safety haz-ard.
Installing carrying attachments on the cross-bars
When installing any carrying attachment such as a
bike carrier, ski carrier, kayak carrier, cargo basket,
etc. on the crossbars, follow the manufacturer ’s
instructions and make sure that the attachment is
securely fixed to the crossbars. Use only attach-
ments designed specifically for the crossbars. A set
of the crossbars is designed to carry loads (cargo
and attachment) of not more than 100 lb. (45 kg).
Before operating the vehicle, make sure that the car-
go is properly secured on the attachment. NOTE Remember that the vehicle ’s center of gravity is
altered with the weight of the load on the roof, thus affecting the driving characteristics.
Drive carefully. Avoid rapid starts, hard corneringand abrupt stops. Crosswind effects will beincreased.
Removal and installation of the crossbars
The crossbars can be removed when you do not
use the roof to carry cargo.
n To remove the crossbar
1. Loosen and remove the T –30 torx head screw
from the top of each crossbar end support.

Driving tips
8-36
safety’s sake, you should employ extra cau-
tion when towing a trailer and you should
never speed. You should also keep the follow-ing tips in mind:
Before starting out on a trip
Check that the vehicle and vehicle-to-hitch mount-
ing are in good condition. If any problems are
apparent, do not tow the trailer. Check that the vehicle sits horizontally with the
trailer attached. If the vehicle is tipped sharply up at
the front and down at the rear, check the total trailer
weight, GVW, GAWs and tongue load again, then
confirm that the load and its distribution are accept-able. Check that the tire pressures are correct.
Check that the vehicle and trailer are connected
properly. Confirm that
–the trailer tongue is connected properly to the
hitch ball.– the trailer lights connector is connected prop-
erly and trailer ’s brake lights illuminate when the
vehicle’ s brake pedal is pressed, and that the trail-
er’ s turn signal lights flash when the vehicle ’s turn
signal lever is operated.– the safety chains are connected properly. –
all cargo in the trailer is secured safety in posi-
tion.– the side mirrors provide a good rearward field of
view without a significant blind spot.
Sufficient time should be taken to learn the “feel”
of the vehicle/trailer combination before starting out
on a trip. In an area free of traffic, practice turning, stopping and backing up.
Driving with a trailer
You should allow for considerably more stopping
distance when towing a trailer. Avoid sudden brak-
ing because it may result in skidding or jackknifing
and loss of control. Avoid abrupt starts and sudden accelerations. If
your vehicle has a manual transmission, always start
out in first gear and release the clutch at moderate
engine revolution. Avoid uneven steering, sharp turns and rapid lane
changes. Slow down before turning. Make a longer than
normal turning radius because the trailer wheels will
be closer than the vehicle wheels to the inside of the
turn. In a tight turn, the trailer could hit your vehicle. Crosswinds will adversely affect the handling of
your vehicle and trailer, causing sway. Crosswindscan be due to weather conditions or the passing of