15-287-21

ATTENTION:
GENERAL MANAGER
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PARTS MANAGER
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CLAIMS PERSONNEL
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
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SERVICE MANAGER
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© 2021 Subaru of America, Inc. All rights reserved.
SERVICE INFORMATION BULLETIN
APPLICABILITY:
		
		
		
		
		
SUBJECT:
2020-22MY Legacy & Outback
2017-22MY Impreza
2018-22MY Crosstrek
2022MY WRX
2019-22MY Forester
2019-22MY Ascent
NUMBER: 15-287-21
DATE:
10/08/21
Accessory Remote Engine Start Diagnostic Information
INTRODUCTION:
This Service Information Bulletin announces the availability of diagnostic information regarding
accessory remote engine start systems. This information is to be used with the remote engine start
troubleshooting guides posted on STIS. The chart of troubleshooting videos included in this bulletin
contains a breakdown of RES operation characteristics along with links to associated demonstration
videos.
SERVICE / INFORMATION:
Diagnostic information can be found in the following RES Troubleshooting Guide list on STIS.
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: 15-287-21; Date: 10/08/21
Page 1 of 4
NOTES:
1. Additional information for Outback & Legacy can be found in TSB 15-258-19R.
2. DTC #U0254 can be set when a STARLINK remote start is requested on vehicles equipped with
an accessory remote start system.
RES Troubleshooting Guides
Year
Model
17-22
Impreza
18-22
Crosstrek
19-22
Ascent
19-22
Forester
20-22
Legacy/Outback
19-22
Impreza
19-22
Crosstrek
19-20
Ascent
20-22
Legacy/Outback
17-18
Impreza
18
Crosstrek
Ignition Type
Document Code #
Key Start
TSG 900MHz KS
Push Start
TSG 900MHz PS
Push Start
TSG SFL PS
Subaru Remote Engine Start Troubleshooting Videos
Video #
Video Link
Vehicle Response
(# of Horn Honks)
Description
Remote Engine Start Shutdown - Door Open
One (1) Horn Honk for
RES Activation
1
1
NO Horn Honks for RES
Shut Down
Reasons for RES Shutdown
- Any Door Open
Remote Engine Start Shutdown – Over-rev Protection
One (1) Horn Honk for
RES Activation
2
2
NO Horn Honks for RES
Shut Down
Reasons for RES Shutdown
- RPMs > ~3,500
Continued...
Bulletin Number: 15-287-21; Date: 10/08/21
Page 2 of 4
Subaru Remote Engine Start Troubleshooting Videos
Video #
Video Link
Vehicle Response
(# of Horn Honks)
Description
Two (2) Horn Honks
Reasons to Prevent RES Brake Pedal Depressed /
Switch Active
Six (6) Horn Honks
Reasons to Prevent RES Any Door Open
Two (2) Horn Honks
Reasons to Prevent RES Hood Open / Switch Active
Prevent Remote Engine Start - Brake Switch
3
3
Prevent Remote Engine Start - Door Open
4
4
Prevent Remote Engine Start - Hood Switch
5
5
Prevent Remote Engine Start - Key In Ignition
Ignition Turns “ON”
6
6
Two (2) Horn Honks
Reasons to Prevent RES Key in Ignition Switch
Continued...
Bulletin Number: 15-287-21; Date: 10/08/21
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Subaru Remote Engine Start Troubleshooting Videos
Video #
Video Link
Vehicle Response
(# of Horn Honks)
Description
Prevent Remote Engine Start - Shifter Out of Park
Ignition Turns “ON”
7
7
Two (2) Horn Honks
Reasons to Prevent RES Gear Selector / Shifter out
of Park
Subaru RES Selectable Run Time Programming
8
8
Four (4) Horn Honks
to access
Selectable Run Time
Programming
RES Programming Selectable Run Time - 3, 5,
10 or 15 (Default) Minutes
Three (3) Horn Honks
to access
RES Transmitter
Programming
RES Programming Transmitter Learn Mode
(Stores up to 8 Fobs)
Subaru RES Transmitter Programming
9
9
IMPORTANT REMINDERS:
•
SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.
•
Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
•
Always refer to STIS for the latest service information before performing any repairs.
Bulletin Number: 15-287-21; Date: 10/08/21
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