NHTSA ID Number: 10201035
Manufacturer Communication Number: 18-214-21
TSB/Document Date: 2021-09-03
Summary
This bulletin provides a description of current changes to Service Manuals available via the Subaru
Technical Information System (STIS) web site.
Changes were made to the TT
General
Description
>Component
>Master Cylinder
>Brake Pedal
The master cylinder and brake pedal
illustrations were changed
Master Cylinder
>Installation
>Disassembly
>Assembly
Some instructions were changed and
removed
Crosstrek
Diagnostics
2017
SUB-SECTION
Brake
Impreza
Brake Booster
>Installation >
Brake Booster
Brake Pipe
>Installation
A caution to not bend the brake pipe
was changed
Brake Pedal
>Installation
>CVT Model
A caution about the clevis pin was
changed
Continued...
Bulletin Number: 18-199-21; Date: 08/11/21
Page 3 of 6
YEAR
MODEL
SECTION
Body &
Electrical/ Wiring
System
Diagnostics
2018
SUB-SECTION
PAGE or
CHAPTER
DESCRIPTION OF CHANGE
Security & Locks
Function Setting
>Procedure
>Method for
Stopping KAS
Function by
Operating Access
Key
A note about the secret code was
added
Data Monitor
>List
SRH Setup Status was added to the
list
Diagnostics w/
Phenomenon
>Inspection >The
Auto Headlight
Beam Leveler
Does Not Operate
Changes were made to the TT
General
Description >
Component
>Master Cylinder
The master cylinder illustration
and tightening torque specs were
changed
Master Cylinder
>Installation
Installation step #1 was changed for
Crosstrek model
Brake Booster
>Installation >
Brake Booster
Installation steps were changed
Air Bleeding
>Procedure
>Caliper
Descriptions were deleted
Brake Pipe
>Installation
A caution to not bend the brake pipe
was changed
Headlight/ Foglight Diag
Impreza/
Crosstrek
Brake
P-HEV Hybrid Powertrain
Control Diag
P-HEV Drive Motor Diag
Plug-In Battery Charger Diag
P-HEV High Voltage Battery
Diag
2019
Impreza/
Crosstrek
Diagnostics
Headlight/ Foglight Diag
P-HEV Drive Motor Diag
General Scan Tool
>Operation >How Mode $07 Description was Changed
to Use General
to Initial Emission-related Powertrain
Scan Tool > Mode
DTC
$07
Data Monitor
>List
SRH Setup Status was added to the
list
Diagnostics w/
Phenomenon
>Inspection >The
Auto Headlight
Beam Leveler
Does Not Operate
Changes were made to the TT
Diag Procedure
w/ DTC >DTC
P1CCC96
A change was made to step #2 of
the TT
Continued...
Bulletin Number: 18-199-21; Date: 08/11/21
Page 4 of 6
YEAR
MODEL
SECTION
Body &
Electrical/ Wiring
System
2019
(cont.)
SUB-SECTION
PAGE or
CHAPTER
DESCRIPTION OF CHANGE
Security & Locks
Function Setting
>Procedure
>Method for
Stopping KAS
Function by
Operating Access
Key
A note about the secret code was
added
Master Cylinder
>Installation
Installation step #1 was changed for
Crosstrek model
Brake Booster
>Installation
>Except for
Hybrid Model
The installation instructions were
changed
General Scan Tool
>Operation >How
to Use General
Scan Tool > Mode
$07
Mode $07 Description was Changed to
Initial Emission-related Powertrain DTC
Data Monitor >List
SRH Setup Status was added to the list
Diagnostics w/
Phenomenon
>Inspection >The
Auto Headlight
Beam Leveler Does
Not Operate
Changes were made to the TT
P-HEV Drive Motor Diag
Diag Procedure
w/ DTC >DTC
P1CCC96
A change was made to step #2 of the
TT
Security & Locks
Function Setting
>Procedure
>Method for
Stopping KAS
Function by
Operating Access
Key
A note about the secret code was
added
Master Cylinder
>Installation
Installation step #1 was changed for
Crosstrek model
Brake Booster
>Installation
>Except for Hybrid
Model
The installation instructions were
changed
Impreza/
Crosstrek
Brake
P-HEV Hybrid Powertrain Control
Diag
P-HEV Drive Motor Diag
Plug-In Battery Charger Diag
P-HEV High Voltage Battery Diag
Diagnostics
Headlight/ Foglight Diag
2020
Impreza/
Crosstrek
Body & Electrical/
Wiring System
Continued...
Bulletin Number: 18-199-21; Date: 08/11/21
Page 5 of 6
YEAR
MODEL
SECTION
SUB-SECTION
PAGE or
CHAPTER
DESCRIPTION OF CHANGE
Diag Procedure
w/ DTC >P0011
>P0014 >P0021
>P0024
Steps were added to all four TTs
P-HEV Drive Motor Diag
Diag Procedure
w/ DTC >DTC
P1CCC96
A change was made to step #2 of the
TT
Throttle Body
>Inspection
>Throttle Sensor
Notes were added and inspection
instructions were changed
Engine Control
Module
>Installation
The immobilizer type was changed in
the cautions section
Accelerator Pedal
>Inspection
>Except for Hybrid
Model
A note was added
Diagnostics
2021
Impreza/
Crosstrek
Fuel Injection
Engine
Speed Control Systems
Bulletin Number: 18-199-21; Date: 08/11/21
Page 6 of 6
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TSB/Document ID: 18-214-21
Replacement Service Bulletin Number:
MFR Communication Date: 2021-08-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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