18-210-21

Service Bulletin Details

Public Details for: 18-210-21

Description of current changes to service manuals available via the subaru technical information system (stis) web site.


- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 -

Models from 2020
2020 SUBARU WRX
2020 SUBARU WRX STI
Models from 2019
2019 SUBARU WRX
2019 SUBARU WRX STI
Models from 2018
2018 SUBARU WRX
2018 SUBARU WRX STI
Models from 2017
2017 SUBARU WRX
2017 SUBARU WRX STI
Models from 2016
2016 SUBARU WRX
2016 SUBARU WRX STI
Models from 2015
2015 SUBARU WRX
2015 SUBARU WRX STI 
ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
q
CLAIMS PERSONNEL
q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
q
© 2021 Subaru of America, Inc. All rights reserved.
SERVICE BULLETIN
APPLICABILITY:
SUBJECT:
2015-20MY WRX/STI
Service Manual Corrections
NUMBER:
DATE:
18-210-21
05/13/21
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 STIS web site
for all future, update service manual information.
YEAR
2020
MODEL
WRX/ STI
SECTION
SUB-SECTION
PAGE or CHAPTER
DESCRIPTION OF CHANGE
Engine
Starting/ Charging System (not
STI)
Battery Sensor
Battery Sensor removal and
installation steps updated/
changed.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
General
Description
Recommended Material
Grease
Brake Pad Clip Grease number
changed/updated.
Brakes
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Diagnosis
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.
SUBARU OF AMERICA, INC. IS
ISO 14001 COMPLIANT
ISO 14001 is the international standard
for
excellence
in
Environmental
Management Systems. Please recycle
or dispose of automotive products in a
manner that is friendly to our environment
and in accordance with all local, state
and federal laws and regulations.
Continued...
Bulletin Number: 18-210-21; Date: 05/13/21
Page 1 of 3
YEAR
2019
MODEL
SECTION
SUB-SECTION
PAGE or CHAPTER
DESCRIPTION OF CHANGE
Diagnosis
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Engine
Fuel Injection (not STI)
Throttle Body
Inspection/testing steps added.
Engine
Fuel Injection (STI)
Throttle Body
Inspection/testing steps added.
General
Description
Recommended Material
Grease
Brake Pad Clip Grease number
changed/updated.
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
Body & Electrical/
Wiring System
Lighting System
Rear Combination Light
Assembly
Installation steps changed &
updated.
Diagnosis
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Engine
Fuel Injection (not STI)
Throttle Body
Inspection/testing steps added.
Engine
Fuel Injection (STI)
Throttle Body
Inspection/testing steps added.
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
Body & Electrical/
Wiring System
Lighting System
Rear Combination Light
Assembly
Installation steps changed &
updated.
Diagnosis
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Airbag & Seat
Belt System
Airbag System
Roll Connector
Adjustment steps updated.
Engine
Fuel Injection (not STI)
Throttle Body
Inspection/testing steps added.
Engine
Fuel Injection (STI)
Throttle Body
Inspection/testing steps added.
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
Body & Electrical/
Wiring System
Lighting System
Rear Combination Light
Assembly
Installation steps changed &
updated.
WRX/ STI
Brakes
2018
2017
WRX/ STI
Brakes
WRX/ STI
Brakes
Continued...
Bulletin Number: 18-210-21; Date: 05/13/21
Page 2 of 3
YEAR
2016
MODEL
SECTION
SUB-SECTION
PAGE or CHAPTER
DESCRIPTION OF CHANGE
Diagnosis
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Airbag & Seat
Belt System
Airbag System
Roll Connector
Adjustment steps updated.
Engine
Fuel Injection (not STI)
Throttle Body
Inspection/testing steps added.
Engine
Fuel Injection (STI)
Throttle Body
Inspection/testing steps added.
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
Body & Electrical/
Wiring System
Lighting System
Rear Combination Light
Assembly
Installation steps changed &
updated.
Diagnosis
Engine (not STI)
Diagnostic procedure
with DTC.
Diagnostic steps added for DTCs
P0011, 0014, 0021, 0024.
Airbag & Seat
Belt System
Airbag System
Roll Connector
Adjustment steps updated.
Engine
Fuel Injection (not STI)
Throttle Body
Inspection/testing steps added.
Engine
Fuel Injection (STI)
Throttle Body
Inspection/testing steps added.
Front Brake Pad
Installation
Installation steps changed &
updated.
Front Disc Brake Assembly
Installation
Installation steps changed &
updated.
Rear Brake Pad
Installation
Installation steps changed &
updated.
Rear Disc Brake Assembly
Installation
Installation steps changed &
updated.
Transmission
Continuously Variable
Transmission (TR690)
Transmission Control
Module (TCM)
Installation steps changed.
Body & Electrical/
Wiring System
Lighting System
Rear Combination Light
Assembly
Installation steps changed &
updated.
WRX/ STI
Brakes
2015
WRX/ STI
Brakes
Bulletin Number: 18-210-21; Date: 05/13/21
Page 3 of 3

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