Engine Surges/Jolts During Accelerator Release – 2021-2023 Subaru Crosstrek & 2019-2022 Forester 2.5L

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Bulletin Number: 09-100-22; Date: 01/24/23 Page 1 of 4 SERVICE 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: 09-100-23 DATE: 01/24/23 APPLICABILITY: 2021-23MY Crosstrek 2.5L 2019-22MY Forester 2.5L SUBJECT: Engine Surges/Jolts During Accelerator Release INTRODUCTION: This bulletin announces availability of reprograming files for the Engine Control Module (ECM) to address rare cases of the engine surging/jolting when releasing the accelerator from halfthrottle. These new files contain enhanced logic to optimize fuel trim and provide stabilized engine combustion during Exhaust Gas Recirculation (EGR) valve operation. If this condition is duplicated, reprogram the ECM using the procedures outlined in this bulletin. PRODUCTION CHANGE INFORMATION: These files were incorporated into vehicle production as per the table below. Model Starting VIN Crosstrek TBD Forester NH505689 Forester Wilderness NH504522 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. ©2023 Subaru of America, Inc. All rights reserved. Bulletin Number: 09-100-22; Date: 01/24/23 Page 2 of 4 Continued… PAK FILE APPLICABILITY: Model MY PAK File Description New ECM Part # Decryption Keyword Old ECM Part # New ECM CID # Crosstrek 21 22765AP813.pak 22765AP813 D90188D6 22765AP810 22765AP811 22765AL822 XE1P502G00G 22 22765AS343.pak 22765AS343 71271247 22765AS340 22765AS341 22765AS342 XE1R202G00G 23 22765AT151.pak 22765AT151 7B6694A0 22765AT150 XE1W011G00G Forester 19 22765AL825.pak 22765AL825 41631B25 22765AL820 22765AL821 22765AL822 22765AL823 22765AL824 XE1P900A 20 22765AN464.pak 22765AN464 A327790F 22765AN460 22765AN461 22765AN462 22765AN463 XE1M501a00G 21 22765AR673.pk2 22765AR673 31707948 22765AR670 22765AR671 22765AR672 XE1P501a00G 22 22765AR602.pak 22765AR602 604D170A 22765AR600 22765AR601 XE1R201a00G 22 22765AR552.pak 22765AR552 E8EE410D 22765AR550 22765AR551 XE1R201a00G 22 22765AR612.pk2 22765AR612 62CD940E 22765AR610 22765AR611 XE1R201z00G These files are included in the December 2022 SSM software update. SERVICE PROCEDURE / INFORMATION: REMINDER: Customer satisfaction and retention starts with performing quality repairs. • Reprogram the ECM following the normal FlashWrite procedure. Subaru of America, Inc. (SOA) highly recommends utilizing either the Subaru Midtronics DCA8000 Dynamic Diagnostic Charging System or the Subaru Midtronics GR8-1100 Diagnostic Battery Charger to the vehicle in the Power Supply Mode feature anytime a vehicle control module is being reprogrammed. Once the Midtronics charger is connected to the vehicle, if the battery is fully charged, it will take less than three (3) minutes to boot-up the charger, select the Power Supply Mode, and have the battery voltage stabilized and ready for reprogramming. Bulletin Number: 09-100-22; Date: 01/24/23 Page 3 of 4 Continued… NOTES: • For instructions on using the Power Supply Mode, reference the applicable User Manual for the Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Midtronics GR8- 1100 Diagnostic Battery Charger on STIS. • Confirm all electrical loads such as lights, audio, HVAC, seat heaters, and rear defroster are all switched OFF before setting up the charger for Power Supply Mode. • Select the correct battery type (Enhanced Flooded, Flooded, Gel, AGM or AGM Spiral). • Input the CCA which matches the vehicle’s battery. NOTE: OE and replacement batteries have different CCA ratings. Always confirm the battery’s CCA rating before proceeding. • If using a DCA-8000 Dynamic Diagnostic Charging System, set the power supply voltage to 13.5 Volts. • DO NOT connect the DST-i or DST-010 until the Power Supply mode function has completed its battery test mode and the Charging Voltage has dropped to and shows a steady 13.5 Volts on the display. • Once Power Supply Mode reaches a steady 13.5 Volts, connect the DST-i or DST-010 to the OBD connector and proceed with initiating the normal FlashWrite reprogramming process. • Amperage will fluctuate based upon the vehicle’s demand for power. NOTE: If the voltage rises beyond 14 Volts while programming is in process, the procedure will abort. This can indicate a need to test or charge the vehicle battery before any further attempt at programming is made. • ALWAYS set the power supply voltage to 13.5 Volts when using Power Supply Mode. NEVER turn the ignition switch on when charging at voltages 15 Volts or higher. REMINDER: If the DCA-8000 or GR8-1100 indicates the vehicle’s battery must be charged, charge the battery fully before proceeding to reprogram the vehicle while using the Power Supply Mode. NOTE: Control module failures resulting from battery discharge during reprogramming are not a matter for warranty. Should any DTCs reset after the reprogramming update is performed, diagnose per the procedure outlined in the applicable Service Manual. VERY IMPORTANT: This information is applicable to the Subaru Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Subaru Midtronics GR8-1100 Diagnostic Battery Charger ONLY. It does not apply to any other brand / type of “generic” battery charger whatsoever. ONLY the DCA-8000 and the GR8- 1100 and their Power Supply Mode feature have been tested and approved by SOA. Bulletin Number: 09-100-22; Date: 01/24/23 Page 4 of 4 WARRANTY / CLAIM INFORMATION: For vehicles within the Basic New Car Limited Warranty period, this repair may be submitted using the following claim information: Labor Description Labor Operation # Fail Code Labor Time MFI OBDII ECM Reprogramming A455-288 UPG-48 0.4 IMPORTANT: Always note the original Calibration Identification number (CID) the vehicle came in with on the repair order before reprogramming and, make sure to list the NEW CID for any newlyinstalled programming (as confirmed from the actual control module AFTER installation). The NEW CID MUST also be noted on the repair order as this information is required for entry in the Miscellaneous Detail field during claim submission. NOTE: The PAK file listings provided in this bulletin are the latest available at the time of publishing. Updates are often released thereafter without revision to the original bulletin. For this reason, it is critical to always have the latest version of Select Monitor software installed on your system. You can confirm if a later version is available by entering the CID listed in this bulletin into FlashWrite. If a newer CID is shown as available in FlashWrite, reprogram using that file. 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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