2002 SUBARU IMPREZA engine

Starting and operating
7-13
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labor.
On steep downgrades, downshift the transmission
to 4th, 3rd or 2nd gear as necessary; this helps to
maintain a safe speed and to extend brake pad life.
In this way, the engine provides a braking effect. Re-
member, if you “ride” (over use) the brakes while de-
scending a hill, they may overheat and not work
properly. Automatic transmission
The automatic transmission is electronically con-
trolled with 4-forward speeds and 1-reverse speed. NOTE
Immediately after a disconnected battery is re-
connected or ATF (automatic transmission fluid) is replaced, you may feel that the automatic
transmission operation is somewhat unusual.
This results from erasure or invalidation of data
the on-board computer has collected and storedin memory to allow the transmission to shift at the most appropriate times for the current condi- tion of your vehicle. Optimized shifting will be re-stored as the vehicle continues to be driven for awhile.
WARNING
Do not shift from the
“P” or “N” position into
the “D”, “3”, “2”, “1” or “R” position while de-
pressing the accelerator pedal. This may
cause the vehicle to jump forward or back- ward.

Starting and operating
7-14
CAUTION
Shift into the “P” or “R” position only after
the vehicle is completely stopped. Shifting while the vehicle is moving may cause dam- age to the transmission. Do not race the engine for more than five
seconds in any position except the “N” or “P”
position when the brake is set or the tires areon blocks. This may cause the automatic
transmission fluid to overheat. Avoid shifting from one of the forward driv-
ing positions into the “R” position or vice
versa until the vehicle has completelystopped. Such shifting may cause damage tothe transmission.
Selector lever for automatic transmis- sion
HB7010AA

Starting and operating
7-15
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HB7021BA
With the brake pedal depressed, move the lever along the gate.Move the lever along the gate.
The selector lever has seven positions.
P (Park)
This position is for parking the vehicle and starting the engine. In this position, the transmission is mechanically
locked to prevent the vehicle from rolling freely.
When you park the vehicle, first set the parking
brake fully, then shift into the “P” position. Do not
hold the vehicle with only the transmission.
A shift interlock function is employed in the automat- ic transmission system to ensure safe starting of the vehicle.
To shift the selector lever from the
“P” to the any oth-
er position, you have to depress the brake pedal ful-ly when the ignition switch is in the “ON” position.
This prevents the vehicle from lurching when it is
started.
If the shift lever does not move from the “P” position
with the brake pedal depressed, refer to the “Shift
lock release ” section in this chapter.
R (Reverse)
This position is for backing the vehicle.
To shift from the “N” to “R” position, first stop the ve-
hicle completely then move the lever to the “R” posi-
tion.
N (Neutral)
This position is for restarting a stalled engine.
In this position the wheels and transmission are not
locked. In this position, the transmission is neutral;
the vehicle will roll freely, even on the slightest
incline unless the parking brake or foot brake is on.

Starting and operating
7-16
WARNING
Do not drive the vehicle with the selector lever in the “N” (neutral) position. Engine braking
has no effect in this condition and the risk ofan accident is consequently increased.
D (Drive)
This position is for normal driving.The transmission automatically shifts into a suitable
gear from 1st to 4th according to the vehicle speed
and the acceleration you require.
When more acceleration is required in this position,
press the accelerator pedal fully to the floor andhold that position. The transmission will automatical-
ly downshift to 3rd, 2nd or 1st gear. When you re-
lease the pedal, the transmission will return to the
original gear position.
n While climbing a grade
When driving up hill, undesired upshift to 4th gear is
prevented from taking place when the accelerator
pedal is released. This minimizes the chances of subsequent downshifting to a lower gear when ac-
celerating again. This prevents repeated upshifting
and downshifting resulting in a smoother operation of the vehicle.
NOTE The transmission may downshift to 2nd or 1st
gear, depending on the way the accelerator pedalis pressed to accelerate the vehicle again. n While going down a hill
When descending a steep hill, depressing the brake
pedal will cause the transmission to downshift to 3rd
gear, thus applying engine braking. Reacceleration
for a short time will cause the transmission to upshift
normally. NOTE In some cases, depressing the brake pedal on a downhill grade does not result in an automatic
downshift to 3rd gear. This can happen when theautomatic transmission fluid temperature is very
low, for example, during driving shortly after the
vehicle has been parked for an extended period
of time. When the ATF temperature has risen to a
certain level, automatic downshift normally takes
place. In the meantime, downshift manually forengine braking as required.Also, downshifting when braking downhill willnot occur at speeds above approximately 48 mph(78 km/h).

Starting and operating
7-17
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3 (Third)
This position is for using engine braking when going down a hill or for climbing a grade.The transmission automatically shifts into a suitable
gear from 1st to 3rd according to the vehicle speed
and the acceleration you require.
When more acceleration is required in this position,
press the accelerator pedal fully to the floor and hold that position. The transmission will automatical-
ly downshift to 2nd or 1st gear. When you release
the pedal, the transmission will return to the originalgear position.
2 (Second)
This position is for using engine braking when goingdown a hill or for climbing a steep grade.In this position, the transmission holds in the 2nd
gear.
Use this position when starting off from a standstill
on slippery road surfaces such as mud or snow. It
will ensure greater traction.
1 (First)
This position is for driving up or down very steep
grades, or driving through mud or sand, or on slip-
pery surfaces. In this position, the transmission
holds in the 1st gear.
Maximum speeds
The following tables show the maximum speeds that
are possible with each different gear. The tachome-ter’ s needle will enter the red area if these speeds
are exceeded.
When shifting down a gear, it is important to confirm
that the current vehicle speed is not in excess of the
Maximum Allowable Speed of the gear which is
about to be selected.Exceeding the Maximum Allowable Speeds will
result in over-revving of the engine. In addition a
powerful engine brake will engage and control of the vehicle may be lost. mph (km/h)
2.5 liter models2.0 liter turbo
RSTS, OUTBACKSPORTmodelsWRX
129 (47)35 (56)40 (65)
258 (93)64 (103)73 (118)
NOTE In order to prevent over-revving during accel-
eration of the vehicle, the transmission will auto-
matically shift to the next highest gear if the Max-

Starting and operating
7-18
imum Allowable Speed for the current gear is exceeded. Similarly, in order to prevent over-revving dur-
ing deceleration of the vehicle, the transmission
will remain in the current gear if the speed of the
vehicle is in excess of the Maximum Allowable Speed for the gear to which the selector lever has been moved.
WARNING
When shifting down a gear, ensure that the
vehicle is not travelling at a speed exceedingthe Maximum Allowable Speed for the gearwhich is about to be selected. Failure toobserve this precaution can lead to engine
over-revving and this in turn can result in engine damage. In addition, sudden application of engine
brakes when the vehicle is travelling on a slip-pery surface can lead to wheel locking; as a
consequence, control of the vehicle may belost and the risk of an accident increased.
Driving tips
Always apply the foot or parking brake when the
vehicle is stopped in the “D”, “3”, “2”, “1” or “R”
position. Always set the parking brake when parking your
vehicle. Do not hold the vehicle with only the trans-mission. Do not keep the vehicle in a stationary position on
an uphill grade by using the “D”, “3”, “2”, or “1”
position. Use the brake instead.
Shift lock release
If the selector lever does not move from the “P” posi-
tion with the brake pedal depressed and the ignition switch in the “ON” position, perform the following
steps:
To override the shift lock:
1. Set the parking brake and stop the engine.
2. Take out the screwdriver from the tool bag.
3. Remove the cover by prying on the edge with the
regular screwdriver.

Starting and operating
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HB7010CA
HG7010BA
4. Insert the screwdriver into the hole.
5. Push down on the screwdriver and move the se-
lector lever from the “P” to the “N” position. 6. Remove the screwdriver from the hole. Depress
the brake pedal and start the engine.
Take your vehicle to the nearest SUBARU dealer im-
mediately to have the system repaired.

Starting and operating
7-20
Rear viscous limited slip differential (LSD) (if equipped)
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.