VIN / Build Split
VIN pos 4-8 identifies model/body/engine. Subaru WMI: 4S3, JF1, JF2. Position 4-5 = model. Position 10 = model year code.
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2021 Subaru Forester Supported Services
2021 Subaru Forester
ADAS calibration, module programming, and security relearns
Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.
Technical snapshot
- Platform Subaru SK (5th Gen, 2021)
- CAN Architecture CAN-C (500kbps HS-CAN) + CAN-B (Body LIN bus) + FlexRay (EyeSight); OBD2 DLC Pin 6/14 CAN-C 500kbps
- Security Subaru KISM ~88284-SK010; 315MHz rolling code RF (US); AKL via SSM4 + STIS dealer authorization; max 4 keys; no OBD PIN extraction
What do you need fixed?
Choose a service to start your quote.
OVERVIEW
Expert ADAS calibration, module programming, and diagnostic recovery for the 2021 Subaru Forester. On this vehicle we cover documented systems include EyeSight Stereo Camera Assembly (Gen 3), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM), this Subaru SK (5th Gen, 2021) platform vehicle, Subaru KISM Gen 3 (315MHz rolling code) immobilizer support, Subaru STARLINK infotainment programming. Mobile across the DFW Metroplex; mail-in module service is available nationwide.
Platform
Subaru SK (5th Gen, 2021)
Production
2009-present
Trim Levels
Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.
Drivetrain
AWD
Engine
-
CAN Speed
CAN-C (500kbps HS-CAN) + CAN-B (Body LIN bus) + FlexRay (EyeSight); OBD2 DLC Pin 6/14 CAN-C 500kbps
YEAR-SPECIFIC NOTES
Infotainment
Subaru STARLINK
Exact-year service summary for 2021 Subaru Forester
ADAS coverage
This 2021 Subaru Forester page documents 4 ADAS systems, including EyeSight Stereo Camera Assembly (Gen 3), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and Rear View Camera.
View ADAS dataCalibration triggers
Documented calibration triggers include Windshield Replacement (EyeSight Equipped), EyeSight Stereo Camera Replacement (Gen 3), BSD Rear Sensor Replacement, and BCM Replacement. Use the ADAS tab for the full trigger list.
View triggersProgrammable modules
This page indexes 20 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.
View modulesGateway and security
This page includes 5 gateway, immobilizer, or key-security records for this 2021 Subaru Forester.
View securityCore Auto Logic capability
Core Auto Logic supports exact-year diagnostics, ADAS calibration, module programming, and security-access planning for the 2021 Subaru Forester using the documented systems and module data on this page.
Choose a sectionWhat changes on this exact year
Feature availability
EyeSight Gen 3 (dual stereo cameras ~86836-SK010): Pre-Collision Braking, Adapti - Standard; Platform: Subaru SK (5th Gen, 2021) - Confirmed
Driver-assist suite
EyeSight Gen 3 (dual stereo cameras ~86836-SK010): Pre-Collision Braking, Adaptive Cruise Control, Lane Keeping Assist, LVSA; Blind Spot Detection/Rear Cross-Traffic Alert ~86821-SK010; Rear Vision Camera standard
VIN and build split
VIN pos 4-8 identifies model/body/engine. Subaru WMI: 4S3, JF1, JF2. Position 4-5 = model. Position 10 = model year code.
Infotainment context
Subaru STARLINK; SUBARU STARLINK: 8" on Sport/Limited/Touring; 6.5" base; Apple CarPlay/Android Auto upper trims; limited OTA
Network and access
CAN: CAN-C (500kbps HS-CAN) + CAN-B (Body LIN bus) + FlexRay (EyeSight); OBD2 DLC Pin 6/14 CAN-C 500kbps
Tool access for this exact year
Representative tool access paths for this exact model year, gated by the vehicle data and source packet we currently trust.
Factory scan, coding, and calibration access
Subaru SSM4
Factory routines and secure server authorization control this path when aftermarket coverage is not enough for the VIN.
ADAS scan, setup, and verification
Autel, Launch Tech, Topdon
Used where aftermarket coverage supports the procedure; OEM software remains required for locked factory routines.
Bench cloning and chip-level recovery
Alientech / Autotuner / Orange5 / Scanmatik / Flex / VVDI2 / PCMFlash / CGDI / X-Prog
Used only when the module, donor data, EEPROM, MCU, or crash-data workflow requires bench or chip-level handling.
Bench/chip-level only
Choose a section to view data
SUPPORTED SYSTEMS
What we service on this vehicle
Documented module coverage for the 2021 Subaru Forester. Counts reflect modules our techs have programmed or calibrated on this exact platform.
ADAS Calibration
4 modules documented
Forward camera, radar, surround-view and lane-keep recalibration after windshield, suspension or fascia work.
Open ADAS tabEngine / ECU Programming
4 modules documented
Powertrain reprogramming, calibration updates, replacement ECU configuration and security access.
Open Modules tabBCM / Body Programming
2 modules documented
Body control module, gateway and accessory programming. Includes feature-bit reconfiguration.
Open Modules tabTCU / Transmission
2 modules documented
Transmission control module reprogramming, adaptive learning reset and replacement TCM clone.
Open Modules tabSRS / Airbag Reset
2 modules documented
Crash-data clear, hard-code reset and replacement airbag module configuration.
Open Modules tabABS / Brake Module
4 modules documented
ABS / EBCM bleed support, replacement module coding and yaw-rate sensor calibration.
Open Modules tabIPC, SAS & Other Modules
2 modules documented
Instrument cluster cloning, steering angle sensor calibration and other supporting modules.
Open Modules tabConnectivity & Accessories
4 modules documented
Infotainment radio, surround view, remote start, trailer brake controller and other equipped systems.
Open Modules tabRecalibration Triggers
15 modules documented
Service events that require ADAS recalibration on this vehicle. Tap to see what triggers what.
Open ADAS tabNeed something not listed? Most undocumented modules can still be programmed.
Get a QuoteFeature availability 2
EyeSight Gen 3 (dual stereo cameras ~86836-SK010): Pre-Collision Braking, Adapti
StandardCalibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.
Platform: Subaru SK (5th Gen, 2021)
ConfirmedVerify platform code matches when cross-referencing part numbers across model years.
WHAT WE RESOLVE
Common issues on this vehicle
Common Subaru Forester issues we resolve on this platform: EyeSight Stereo Camera Assembly (Gen 3), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and Rear View Camera recalibration after windshield/bumper/suspension/CCM service. Module programming for replacement ECU/PCM, BCM, TCU, or accessory modules - Subaru SK (5th Gen, 2021) platform uses CAN-C (500kbps HS-CAN) + CAN-B (Body LIN bus) + FlexRay (EyeSight); OBD2 DLC Pin 6/14 CAN-C 500kbps.
ADAS CALIBRATION MATRIX
ADAS systems on this vehicle
EyeSight Gen 3 (dual stereo cameras ~86836-SK010): Pre-Collision Braking, Adaptive Cruise Control, Lane Keeping Assist, LVSA; Blind Spot Detection/Rear Cross-Traffic Alert ~86821-SK010; Rear Vision Camera standard
Scroll for part numbers and Details
| System | Type | Category | Cal. Type | Supported | Part # | Actions |
|---|---|---|---|---|---|---|
| EyeSight Stereo Camera Assembly (Gen 3) | Camera | ADAS | Static | YES | ~86836-SK010 (DUAL STEREO CAMERAS - BOTH REPLACED TOGETHER) | |
| Blind Spot Monitor Sensor - Left (BSM) | Radar | ADAS | Static + Dynamic | YES | ~86821-SK010 L (VERIFY VIA OUR DIAGNOSTIC SOFTWARE) | |
| Blind Spot Monitor Sensor - Right (BSM) | Radar | ADAS | Static + Dynamic | YES | ~86821-SK010 R (VERIFY VIA OUR DIAGNOSTIC SOFTWARE) | |
| Rear View Camera | Camera | ADAS | Static | YES | - |
ADAS SYSTEM
YES Supported
Identification
- System type
- Module category
- Sensor location
Part Numbers
- OEM
- Alternative
Calibration & Triggers
- Calibration type
- Programming approach
- Requires PMI
- Trigger events
Technical Notes
- Chip / MCU
- Service notes
Need this calibrated?
Get a quote for ADAS calibration WHEN IS CALIBRATION REQUIRED?
Triggers for ADAS recalibration
Windshield Replacement (EyeSight Equipped)
SSM4 EyeSight static calibration CRITICAL. Bracket undamaged and torqued. Contrast target at ~3m. SSM4 pass/fail required. Verify Pre-Collision Braking and ACC.
EyeSight Stereo Camera Replacement (Gen 3)
Both cameras as matched pair. SSM4 EyeSight static calibration. Verify bracket. Confirm ACC and Pre-Collision Braking.
BSD Rear Sensor Replacement
SSM4 BSD initialization. Fixed mount. DTC clear. Road verify at 20+ mph. RCTA in reverse.
BCM Replacement
SSM4 flash + VIN + options. Key re-registration via SSM4 + STIS if needed.
ECM Replacement
SSM4 flash + STIS cal + VIN + KISM IMMO re-pairing mandatory. Throttle body init. e-BOXER: hybrid adaptation.
TCM (CVT) Replacement
SSM4 flash + CVT adaptive reset. 500-mile relearn.
ABS / VDC Module Replacement
SSM4 init + brake bleed + SAS zero-point. Drive 25+ mph straight.
Wheel Alignment / Steering Component R&R
SAS zero-point via SSM4. Drive straight 25+ mph.
SRS ECU Replacement
SSM4 SRS initialization. Hard deployment = replace only. All SRS DTC clear before delivery.
KISM / Key Registration
SSM4 + STIS dealer auth. Max 4 keys. All customer keys present in AKL session.
Forward Camera Replacement
Camera module replacement requires full recalibration using SSM4.
Any Front-End Collision
Inspect and recalibrate forward camera after any front-end collision using SSM4.
Rear Bumper Repair or Replacement
BSD radar alignment required after rear bumper R&R. Use SSM4.
BSM Sensor Replacement
Blind spot monitoring sensor replacement requires calibration using SSM4.
Mirror Replacement
If BSD sensor is mirror-integrated, recalibration required. Verify sensor location; use SSM4 if applicable.
SRS Modules
Airbag Control Module (ACM) 98251SJ031
- Part number
- 98251SJ031
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires SSM4 or compatible scan tool for SRS reset. DTC B1610 common post-crash. Battery disconnect and 90-second wait before module removal.
Airbag Control Module (ACM) 98251SJ021
- Part number
- 98251SJ021
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires SSM4 or compatible scan tool for SRS reset. DTC B1610 common post-crash. Battery disconnect and 90-second wait before module removal.
ECU Modules
ECM - 2.5L FB25DOHC (non-hybrid) ~22611-SK010 (VERIFY VIA STIS)
- Part number
- ~22611-SK010 (VERIFY VIA STIS)
- Notes
- SSM4 flash + STIS cal + VIN + KISM IMMO re-pairing mandatory. Throttle body init. Verify fuel trim and idle. (verify via STIS/SSM4)
ECM - e-BOXER Hybrid (Touring) ~22611-SK020 (VERIFY VIA STIS)
- Part number
- ~22611-SK020 (VERIFY VIA STIS)
- Notes
- SSM4 flash + VIN + IMMO re-pairing. MCM hybrid adaptation reset. BISG adaptation required. Verify hybrid assist via SSM4 live data. (verify via STIS/SSM4)
Motor Control Module (e-BOXER MCM - Touring)
- Notes
- SSM4 programming + hybrid adaptation reset. Coordinate with ECM if both replaced. Verify no hybrid DTC.
TCM - Lineartronic CVT TR580 ~31705-SK010 (VERIFY VIA STIS)
- Part number
- ~31705-SK010 (VERIFY VIA STIS)
- Notes
- SSM4 flash + CVT adaptive reset. 500-mile relearn. Verify no harsh CVT behavior. CVT fluid check post-R&R. (verify via STIS/SSM4)
BCM Modules
Body Control Module (BCM) ~88281-SK010 (VERIFY VIA STIS)
- Part number
- ~88281-SK010 (VERIFY VIA STIS)
- Notes
- SSM4 flash programming + VIN registration + option configuration. NOT plug and play. Verify all body electrical functions.
Combination Meter / Instrument Cluster
- Notes
- SSM4 initialization + VIN registration. Odometer transfer not possible. Verify all gauges and lamps.
TCU / TCM Transmission Modules
TCU - TR690 CVT 31705AA37X
- Part number
- 31705AA37X
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- Renesas SH7263
- Notes
- CVT relearn required via SSM4, CVTF-II fluid spec, immobilizer coding needed
TCU - TR690 CVT High Torque 31705AA38X
- Part number
- 31705AA38X
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- Renesas SH7263
- Notes
- High torque variant for turbo models, CVT relearn via SSM4, CVTF-II fluid, immobilizer sync required
ABS / Brake Modules
ABS/VDC Module ~27596-SK010 (VERIFY VIA STIS)
- Part number
- ~27596-SK010 (VERIFY VIA STIS)
- Notes
- SSM4 initialization + 4-wheel brake bleed + SAS zero-point after replacement or alignment. Drive 25+ mph straight for SAS learning. Verify lamps extinguish. (verify via STIS/SSM4)
Wheel Speed Sensor - Front (each)
- Notes
- Torque to spec. SSM4 DTC clear + road test 15+ mph. Check tone ring.
Brake Pressure Modulator (HCU)
- Notes
- SSM4 automated bleed sequence preferred. Verify firm pedal before road test.
Other Modules (IPC, SAS)
Instrument Panel Cluster (IPC) 85002SJ021, 85002SJ050
- Part number
- 85002SJ021, 85002SJ050
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Steering Angle Sensor (SAS)
- Coding required
- Yes
- Notes
- INTEGRATED (clock spring 83111 family)
Connectivity & Accessories
SUBARU STARLINK Infotainment (8")
- Notes
- SSM4 initialization if replaced. CarPlay/Android Auto re-pairing. Limited OTA. Verify STARLINK services.
SUBARU STARLINK Infotainment (6.5")
- Notes
- SSM4 DTC check. Verify AM/FM/BT function.
Remote Engine Start (factory, if equipped)
- Notes
- BCM programming re-enables post-BCM replacement. OEM only.
Rear Cross Traffic Alert (RCTA) (BSD SENSOR SYSTEM ~86821-SK010)
- Part number
- (BSD SENSOR SYSTEM ~86821-SK010)
- Notes
- Integrated with BSD. Verify RCTA in reverse at low speed.
ARCHITECTURE & CONNECTIVITY
Architecture & Connectivity
- Body Construction
- Unibody - Subaru Global Platform (SGP); high-tensile steel ring structure
- OBD Protocol
- ISO 15765-4 CAN (500 kbps)
- CAN Architecture
- CAN-C (500kbps HS-CAN) + CAN-B (Body LIN bus) + FlexRay (EyeSight); OBD2 DLC Pin 6/14 CAN-C 500kbps
- Infotainment
- SUBARU STARLINK: 8" on Sport/Limited/Touring; 6.5" base; Apple CarPlay/Android Auto upper trims; limited OTA
- OTA Capable
- Yes
- Infotainment Name
- Subaru STARLINK
- ECU/TCM Unlocking
- Contact us
- ECU/TCM Flashing
- Confirmed
Reviewed coverage: 2021 - 2.0L (SHS SHD), 2.5L CVT (FB25di).
Confirm the exact engine, ECU, and any prerequisite access method before service.
OPENPILOT / COMMA.AI
Openpilot Compatibility
Not Supported
Officially supported (openpilot master)
- Package
- EyeSight Driver Assistance
- Hardware
- Comma 3X + Subaru Global harness
- Harness
- Subaru Global Harness
Hybrid supported 2020. 2025+ new-gen unconfirmed.
FREQUENTLY ASKED QUESTIONS
FAQ
How much does ADAS calibration cost for a 2021 Subaru Forester?
ADAS calibration pricing for a 2021 Subaru Forester depends on which of its 4 documented systems need work after a repair. This vehicle is documented with EyeSight Stereo Camera Assembly (Gen 3), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and Rear View Camera. We provide a fixed quote after confirming the operations performed - send the VIN, the repair scope (windshield R&R, bumper work, alignment, collision), and any DTCs so the quote response can include a real number.
Can you reset the airbag light on a 2021 Subaru Forester?
Yes. The 2021 Subaru Forester uses a factory SRS control module that we support. We read and clear stored crash data, then restore the module to factory status so the airbag warning light goes out and the system returns to full operation. Reference part number on this vehicle: 98251SJ031. Mobile diagnosis and programming are available in DFW, and mail-in module service is available nationwide. Send the part number and a description of what triggered the light, and we will provide a quote and scheduling window.
What is needed after replacing the windshield on a 2021 Subaru Forester?
After windshield replacement on a 2021 Subaru Forester, EyeSight Stereo Camera Assembly (Gen 3) and Rear View Camera rely on the forward-facing camera and require recalibration before the systems return to operation. We perform the calibration on-site in the DFW Metroplex with OE target fixtures. Mail-in module service is available nationwide for eligible module work.
How long does a 2021 Subaru Forester module service take?
Most 2021 Subaru Forester onsite jobs are typically scheduled within 24-48 hours once vehicle readiness, access, and route timing are confirmed. This vehicle has roughly 20 programmable modules documented in our database (4 ECU, 2 BCM, 2 TCU, 4 ABS, plus IPC/SAS/gateway/accessory). Mobile module work and ADAS calibration are scheduled in the DFW service area after quote review. Mail-in module service is available nationwide.
Do you cover the 2021 Subaru Forester on-site, or is this mail-in only?
We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, post-repair recoding, and supported module work). Mail-in module service is available nationwide. Quote the work and we will confirm the active service path for the 2021 Subaru Forester. Do not ship a module unless support confirms next steps.
What kind of warranty do you offer on 2021 Subaru Forester programming?
Every programming, cloning, and calibration job on the 2021 Subaru Forester is backed by a workmanship warranty covering the scope of work we performed: 1-year unlimited on all flashes, clones, and ADAS calibrations. If a module we programmed or a calibration we performed fails to function as expected, return it and we restore it at no charge. The warranty covers our work; it does not cover unrelated mechanical or electrical failure of the module itself.
Which modules on a 2021 Subaru Forester can you actually service?
We program, clone, repair, or replace the full programmable-module stack on a 2021 Subaru Forester. For this vehicle our database documents:
- 4 engine control (ECU/PCM)
- 2 transmission control (TCU/TCM)
- 2 body control (BCM and related)
- 4 ABS / brake control (EBCM)
- 2 immobilizer / security
- 3 key & fob
- 1 instrument cluster (IPC)
- 1 steering angle sensor (SAS)
- 4 ADAS module
Infotainment on this platform: Subaru STARLINK. Send the VIN and the operations performed and we will confirm support and pricing.
Additional Module Part Numbers
Additional OEM-sourced part numbers for the 2021 Subaru Forester covering ADAS, ECU/PCM, BCM, TCU/TCM, SRS, ABS/EBCM, instrument cluster (IPC), gateway, and steering angle sensor modules when available. These reference numbers assist technicians with module identification and sourcing prior to programming.
- ADAS Module Part Numbers
- ~86836-SK010 (DUAL STEREO CAMERAS - BOTH REPLACED TOGETHER)
- ECU / PCM Part Numbers
- 22765AL825, 22765AR675
- BCM / Body Module Part Numbers
- ~88281-SK010 (VERIFY VIA STIS)
- TCU / TCM Part Numbers
- 31705AA37X, 31705AA38X
- SRS / Airbag Module Part Numbers
- 98251SJ031, 98251SJ021
- ABS / EBCM Part Numbers
- 27596-SK010, 27596-SK020, VDC MODULE (SK FORESTER 5TH GEN)
- Instrument Cluster (IPC) Part Numbers
- 85002SJ021, 85002SJ050
- Transmission Control Module (TCM) Part Numbers
- 31705AA37X, 31705AA38X
- Steering Angle Sensor (SAS) Part Numbers
- INTEGRATED (CLOCK SPRING 83111 FAMILY)
Part numbers are OEM base references. Verify exact suffix via VIN-specific build data before ordering. Core Auto Logic provides mobile programming services for all listed modules in the DFW area.
Different trim or build?
Send your VIN and we'll confirm exact module support and pricing in the quote response.
Hit a security wall? We've got the keys.
1-year unlimited warranty on every flash and calibration.
Shared module fitment
Vehicles sharing modules with the 2021 Subaru Forester
These vehicles use one or more of the same replacement modules indexed for this vehicle.
Finish the repair
Need help finishing this repair?
Get onsite help in Dallas-Fort Worth. Ask about same-day availability or a one-time remote session for eligible non-VSP work.
Factory programming software Explore one-time factory coding and programming. We confirm the software and procedure for your vehicle. Module programming & recovery Replacing a module or dealing with a failed programming attempt? Send the part numbers and fault scan for review. Onsite tools & equipment Bring in a technician or ask about hourly, daily and weekly rentals where licensing and equipment availability allow.