18-163-12

ATTENTION:
GENERAL MANAGER
PARTS MANAGER
CLAIMS PERSONNEL
SERVICE MANAGER
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE BULLETIN
APPLICABILITY:	2008-2012MY Impreza
2008-2011MY Impreza WRX/STI
SUBJECT: Service Manual Corrections
NUMBER:
DATE:
18-163-12
10/10/12
INTRODUCTION
The purpose of this bulletin is to provide a description of current changes to Service Manuals
available via the Subaru Technical Information System (STIS) web site. The tables contained within
this bulletin are to be used as guides for becoming aware of the latest changes. We advise you to
always refer to the STIS web site when looking for the latest Service information. Printed pages will
not be made available to update printed Service Manuals.
Paper manuals may have different page numbering then what is reflected below, based on
multiple new and revised pages. Please refer to the information contained on the STI web site
for all future, update service manual information.
YEAR
MODEL
SECTION
PAGE(S)
DESCRIPTION OF CHANGE
2012
Impreza
Engine
ME(H4DO)-3,224,246
Valve Spring specifications changed.
Transmission
CVT-6,324,325
Oil Pump service cteps changed.
2011
Impreza
Engine
EC(H4SO)-17
Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-205-207
Diagnostic steps for DTC P0453 added.
Impreza
Engine 1
EC(H4SO)-16
Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-218-220
Diagnostic steps for DTC P0453 added.
WRX
Engine 2
EC(H4DOTC)-19
Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)-232-234
Diagnostic steps for DTC P0453 added.
Impreza
Engine 1
EC(H4SO)-16
Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-215-217
Diagnostic steps for DTC P0453 added.
WRX
Engine 2
EC(H4DOTC)-19
Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)229-231
Diagnostic steps for DTC P0453 added.
Impreza
Engine 1
EC(H4SO)-15
Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-211-213
Diagnostic steps for DTC P0453 added.
WRX
Engine 2
EC(H4DOTC)-18
Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)-228-230
Diagnostic steps for DTC P0453 added.
2010
2009
2008
Continued...
Bulletin Number: 18-163-12; Date: 10/10/12
Page 1
YEAR
2011
2010
2009
2008
MODEL
SECTION
PAGE(S)
DESCRIPTION OF CHANGE
STI
Engine 1
EC(STI)-18
Pressure Control Solenoid Valve testing steps changed.
WRX
Engine 2
EC(w/o STI)-20
Pressure Control Solenoid Valve testing steps changed.
STI &
WRX
Engine 3
EN(H4DOTC)(diag)-254-256
Diagnostic steps for DTC P0453 added.
Engine 1
EC(STI)-18
Pressure Control Solenoid Valve testing steps changed.
Engine 2
EN(STI)(diag)-239-241
Diagnostic steps for DTC P0453 added.
Engine 1
EC(STI)-18
Pressure Control Solenoid Valve testing steps changed.
Engine 2
EN(STI)(diag)-234-236
Diagnostic steps for DTC P0453 added.
EC(STI)-17
Pressure Control Solenoid Valve testing steps changed.
EN(STI)(diag)-232-234
Diagnostic steps for DTC P0453 added.
STI
STI
STI
Engine 1
Bulletin Number: 18-163-12; Date: 10/10/12
Page 2