Accessory Remote Engine Start Diagnostic Information – 2017-2022 Subaru

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Bulletin Number: 15-287-21; Date: 10/08/21 Page 1 of 4 SERVICE INFORMATION BULLETIN Continued… 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. NUMBER: 15-287-21 DATE: 10/08/21 APPLICABILITY: 2020-22MY Legacy & Outback 2017-22MY Impreza 2018-22MY Crosstrek 2022MY WRX 2019-22MY Forester 2019-22MY Ascent SUBJECT: 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. ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. ©2021 Subaru of America, Inc. All rights reserved. Bulletin Number: 15-287-21; Date: 10/08/21 Page 2 of 4 Continued… 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 Ignition Type Document Code # 17-22 Impreza Key Start TSG 900MHz KS 18-22 Crosstrek 19-22 Ascent 19-22 Forester 20-22 Legacy/Outback 19-22 Impreza Push Start TSG 900MHz PS 19-22 Crosstrek 19-20 Ascent 20-22 Legacy/Outback 17-18 Impreza Push Start TSG SFL PS 18 Crosstrek Subaru Remote Engine Start Troubleshooting Videos Video # Video Link Vehicle Response (# of Horn Honks) Description 1 Remote Engine Start Shutdown – Door Open 1 One (1) Horn Honk for RES Activation NO Horn Honks for RES Shut Down Reasons for RES Shutdown – Any Door Open 2 Remote Engine Start Shutdown – Over-rev Protection 2 One (1) Horn Honk for RES Activation NO Horn Honks for RES Shut Down Reasons for RES Shutdown – RPMs > ~3,500 Bulletin Number: 15-287-21; Date: 10/08/21 Page 3 of 4 Subaru Remote Engine Start Troubleshooting Videos Video # Video Link Vehicle Response (# of Horn Honks) Description 3 Prevent Remote Engine Start – Brake Switch 3 Two (2) Horn Honks Reasons to Prevent RES – Brake Pedal Depressed / Switch Active 4 Prevent Remote Engine Start – Door Open 4 Six (6) Horn Honks Reasons to Prevent RES – Any Door Open 5 Prevent Remote Engine Start – Hood Switch 5 Two (2) Horn Honks Reasons to Prevent RES – Hood Open / Switch Active 6 Prevent Remote Engine Start – Key In Ignition 6 Ignition Turns “ON” Two (2) Horn Honks Reasons to Prevent RES – Key in Ignition Switch Continued… Bulletin Number: 15-287-21; Date: 10/08/21 Page 4 of 4 Subaru Remote Engine Start Troubleshooting Videos Video # Video Link Vehicle Response (# of Horn Honks) Description 7 Prevent Remote Engine Start – Shifter Out of Park 7 Ignition Turns “ON” Two (2) Horn Honks Reasons to Prevent RES – Gear Selector / Shifter out of Park 8 Subaru RES Selectable Run Time Programming 8 Four (4) Horn Honks to access Selectable Run Time Programming RES Programming – Selectable Run Time – 3, 5, 10 or 15 (Default) Minutes 9 Subaru RES Transmitter Programming 9 Three (3) Horn Honks to access RES Transmitter Programming RES Programming – Transmitter Learn Mode (Stores up to 8 Fobs) 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.

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