Subaru 2009 IMPREZA, Service Manual

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PM-28
Automatic Transmission Fluid
PERIODIC MAINTENANCE SERVICES
15.Automatic Transmission
Fluid
A: INSPECTION
CAUTION:
The level of ATF varies with fluid temperature.
Pay attention to the fluid temperature when
checking ATF level.
1) Raise the ATF temperature by driving a distance
of 5 to 10 km (3 to 6 miles). Otherwise, idle the en-
gine to raise ATF temperature to 70 — 80°C (158
— 176°F) on Subaru Select Monitor. <Ref. to
4AT(diag)-16, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>
2) Make sure the vehicle is level.
3) After selecting all positions (P, R, N, D), set the
select lever in “P” range. Idle the engine for 1 or 2
minutes, and measure the ATF level.
4) Make sure that ATF level is the center of upper
and lower level at “HOT” side.
5) If the ATF level is below the center between up-
per and lower level, add the recommended ATF un-
til the fluid level is found above the center between
upper and lower level.
CAUTION:
• Be careful not to exceed the upper level limit.
• Adding ATF to the upper limit mark on “HOT”
side when the ATF temperature is less than
70°C (158°F) will overfill of ATF and cause a
transmission failure.
• If the ATF is spilt over exhaust pipe, wipe it
off with cloth to avoid emitting smoke or caus-
ing a fire.
6) Check ATF level after raising ATF temperature
to 70 — 80°C (158 — 176°F) by driving the vehicle
for 5-10 km (3-6 miles) or by idling the engine.
7) Check the ATF for leaks.
If there are leaks, it is necessary to repair or replace
gaskets, oil seals, plugs or other parts.
B: REPLACEMENT
1) Lift up the vehicle.
2) Drain the ATF (Automatic Transmission Fluid)
by removing drain plug.
CAUTION:
If the ATF is spilt over exhaust pipe, wipe it off
with cloth to avoid emitting smoke or causing a
fire.
NOTE:
Before starting work, cool off the ATF well.
3) Check the condition of ATF drained. <Ref. to
4AT-28, CONDITION CHECK, Automatic Trans-
mission Fluid.>
4) Replace the gasket with new part, and then tight-
en the drain plug to specified torque.
Tightening torque:
25 N·m (2.5 kgf-m, 18.4 ft-lb)
5) Lower the vehicle.
6) Pour ATF from the oil charge pipe.
Recommended fluid:
<Ref. to RM-4, FLUID, RECOMMENDED MA-
TERIALS, Recommended Materials.>
Fluid capacity:
Fill the same amount of ATF drained from
ATF drain plug hole.
(A) Level gauge
(B) Inspection position when HOT
[70 — 80°C (158 — 176°F)]
(C) Upper level
(D) Lower level
(E) Inspection position when COLD
[20 — 30°C (68 — 86°F)]
PI-00570
COLD
LF
HOT
LF
(A)
(C)
(D)
(C)
(D)
(E)
(B)
(A) Oil pan
(B) Drain plug (ATF)
(C) Differential gear oil drain plug
PM-00383
(B)
(A)
(C)