NHTSA ID Number: 10173027
Manufacturer Communication Number: 18-198-20
Summary
The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
40 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
|---|---|---|
| SUBARU | ASCENT | 2019-2020 |
| SUBARU | BRZ | 2013-2020 |
| SUBARU | FORESTER | 2013-2020 |
| SUBARU | LEGACY | 2007-2011, 2015-2020 |
| SUBARU | OUTBACK | 2007-2011, 2015-2020 |
NUMBER: 18-198-20
DATE: 03/03/20
| APPLICABILITY: | 2019-2020 Ascent 2013-2020 BRZ 2013-2020 Forester 2007-2011 & 2015-2020 Legacy Outback |
| SUBJECT: | Service Manual Corrections |
INTRODUCTION
The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site. The tables contained within this bulletin are to be used as guides for becoming aware of the latest changes. We advise you to always refer to the STIS web site when looking for the latest Service information. Printed pages will not be made available to update printed Service Manuals.
Paper manuals may have different page numbering then what is reflected below, based on multiple new and revised pages. Please refer to the information contained on the STIS web site for all future, update service manual information.
| YEAR | MODEL | SECTION | SUB-SECTION | PAGE or CHAPTER | DESCRIPTION OF CHANGE |
| 2020 | Ascent | Diagnostics | Eyesight | Diagnostics with Phenomenon | The description for step 2 of phenomenon #6 has been changed |
| Infotainment | DTC List | B224C added to DTC list | |||
| Infotainment | Diagnostic Procedure with DTC | Diagnostic procedure for DTC B224C has been added | |||
| General Description | Repair Contents | Note | A description in #7 has been deleted | ||
| 2019 | Ascent | Diagnostics | Eyesight | Diagnostics with Phenomenon | Description change for step 2 of phenomenon #6 |
| Infotainment | DTC List | B224C added to DTC list | |||
| Infotainment | Diagnostic Procedure with DTC | Diagnostic procedure for DTC B224C has been added | |||
| General Description | Repair Contents | Note | A description in #7 has been deleted | ||
| Body & Electrical/Wiring System | Security and Locks | Door Lock Control System | Inspection item #2 has been added to the repair order. |
| YEAR | MODEL | SECTION | SUB-SECTION | PAGE or CHAPTER | DESCRIPTION OF CHANGE |
| 2019 | Ascent (cont.) | Brakes | Brake | Stop Light Switch | Inspection item #2 has been changed |
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed and the identification marker locations were added | ||
| Engine | Intake | General Description | The intercooler illustration has been changed and “T2” hyperlink has been added | ||
| Exhaust | General Description | Illustration #1 has been changed | |||
| Front Exhaust Pipe | Some removal illustrations have been changed along with the turbocharger stay instructions. | ||||
| Center Exhaust Pipe | The turbo charger stay removal illustration has been changed | ||||
| Some installation illustrations have been changed along with the turbocharger stay instructions. | |||||
| 2020 | BRZ | Engine Control | EFI System | DTC P0458 & P0459 | The short circuit check description has been changed. |
| 2019 | BRZ | Engine Control | EFI System | DTC P0458 & P0459 | The short circuit check description has been changed. |
| 2018 | BRZ | Engine Control | EFI System | DTC P0458 & P0459 | The short circuit check description has been changed. |
| 2017 | BRZ | Engine Control | EFI System | DTC P0458 & P0459 | The short circuit check description has been changed. |
| 2016 | BRZ | Engine Control | EFI System | DTC P0458, P0459 & P1603 | Some illustrations and inspection item descriptions have been changed |
| 2015 | BRZ | Engine Control | EFI System | DTC P0458, P0459 & P1603 | Some illustrations and inspection item descriptions have been changed |
| 2014 | BRZ | Engine Control | EFI System | DTC P0458, P0459 & P1603 | Some illustrations and inspection item descriptions have been changed |
| 2013 | BRZ | Engine Control | EFI System | DTC P0458, P0459 & P1603 | Some illustrations and inspection item descriptions have been changed |
| 2020 | Forester | Diagnostics | Engine | Diagnostic Procedure with DTC | Some descriptions were changed and added for DTC P2682 |
| Suspension | Rear Suspension | General Description | Illustration #1 has been changed and a description has been added | ||
| Brakes | Brake | Air Bleeding | The tightening tourque specs have been changed. | ||
| Diagnostics | Power Seat Memory | Active Test | An active test item description has been changed | ||
| Eyesight | Diagnostics with Phenomenon | The description for step 2 of phenomenon #6 has been changed | |||
| General Description | Repair Contents | Note | A description in #7 has been deleted | ||
| 2019 | Forester | Diagnostics | Engine | Diagnostic Procedure with DTC | Some descriptions were changed and added for DTC P2682 |
| Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC P1261 | ||||
| Power Seat Memory | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC B2642 | |||
| Eyesight | Diagnostics with Phenomenon | The description for step 2 of phenomenon #6 has been changed |
| YEAR | MODEL | SECTION | SUB-SECTION | PAGE or CHAPTER | DESCRIPTION OF CHANGE |
| 2019 | Forester (cont.) | Body & Electrical/Wiring System | Exterior/Interior Trim | Console Box | Assembly instructions were changed |
| Eyesight | Stereo Camera | Some cautions and working procedures have been changed, added and deleted | |||
| Security and Locks | Door Lock Control System | Some changes and additions have been made to the symptom chart and diag steps | |||
| Seats | General Description | Descriptions have been changed and added and a procedure has been added for front seat removal, installation, inspection, and adjustment | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed and the identification marker locations were added | ||
| General Description | Rear suspension specifications were changed and the flange bolt description was added | ||||
| Front Suspension | General Description | Rear alignment inspection value was changed and the flange bolt description was added | |||
| Transmission | Continuously Variable Transmission | Transmission Mounting System | The removal and installtion procedures for the rear crossmember have been changed | ||
| Brakes | Brake | Air Bleeding | The tightening tourque specs have been changed. | ||
| General Description | Repair Contents | Note | A description in #7 has been deleted | ||
| Diagnostics | Power Seat Memory | Active Test | An active test item description has been changed | ||
| 2018 | Forester | Diagnostics | Brake Control | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC C1532 |
| Occupant Detection | Diagnostic Procedure with DTC | Some changes were made and a step was added to the trouble tree for DTC B1650 | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| 2017 | Forester | Diagnostics | Brake Control | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC C1532 |
| Occupant Detection | Diagnostic Procedure with DTC | Some changes were made and a step was added to the trouble tree for DTC B1650 | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| 2016 | Forester | Diagnostics | Vehicle Dynamics Control | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC C1532 |
| Occupant Detection | Diagnostic Procedure with DTC | Some changes were made and a step was added to the trouble tree for DTC B1650 | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added |
| YEAR | MODEL | SECTION | SUB-SECTION | PAGE or CHAPTER | DESCRIPTION OF CHANGE |
| 2015 | Forester | Diagnostics | Vehicle Dynamics Control | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC C1532 |
| Occupant Detection | Diagnostic Procedure with DTC | Some changes were made and a step was added to the trouble tree for DTC B1650 | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly and assembly procedures have been changed | ||
| 2014 | Forester | Diagnostics | Vehicle Dynamics Control | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC C1532 |
| Occupant Detection | Diagnostic Procedure with DTC | Some changes were made and a step was added to the trouble tree for DTC B1650 | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly and assembly procedures have been changed | ||
| 2013 | Forester | Suspension | Rear Suspension | Rear Shock Absorber | The disassembly and assembly procedures have been changed |
| 2020 | Legacy Outback | Diagnostics | Engine | Diagnostic Procedure with DTC | Some descriptions were changed and added for DTC P2682 |
| Cockpit Control | Service Diagnostics Mode | The procedure to switch to service diagnostics mode has been changed | |||
| Central Gateway | Control Module I/O Signal | The I/O illustration has been changed | |||
| Eyesight | Diagnostics with Phenomenon | The description for step 2 of phenomenon #6 has been changed | |||
| Transmission | Continuously Variable Transmission | Transmission Mounting System | The removal and installtion procedures for the rear crossmember have been changed | ||
| General Description | Pre-Delivery Inspection | PDI Procedure | Some changes and adtions were made to the RAB inspection | ||
| Repair Contents | Note | A description in #7 has been deleted | |||
| Brakes | Brake | Air Bleeding | The tightening tourque specs have been changed. | ||
| 2019 | Legacy Outback | Diagnostics | Infotainment | DTC List | B224C added to DTC list |
| Diagnostic Procedure with DTC | Diagnostic procedure for DTC B224C has been added | ||||
| Body & Electrical/Wiring System | Security and Locks | Door Lock Control System | Inspection item #2 has been added to the repair order. | ||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| Brakes | Brake | Stop Light Switch | Inspection item #2 has been changed | ||
| Body & Electrical/Wiring System | Exterior/Interior Trim | Trunk Lid Garnish | An installation caution has been added |
| YEAR | MODEL | SECTION | SUB-SECTION | PAGE or CHAPTER | DESCRIPTION OF CHANGE |
| 2018 | Legacy Outback | Diagnostics | Infotainment | DTC List | B224C added to DTC list |
| Diagnostic Procedure with DTC | Diagnostic procedure for DTC B224C has been added | ||||
| Body & Electrical/Wiring System | Security and Locks | Door Lock Control System | Inspection item #2 has been added to the repair order. | ||
| Exterior/Interior Trim | Trunk Lid Garnish | An installation caution has been added | |||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| Brakes | Brake | Stop Light Switch | Inspection item #2 has been changed | ||
| 2017 | Legacy Outback | Brakes | Brake | Stop Light Switch | Inspection item #2 has been changed |
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| Body & Electrical/Wiring System | Exterior/Interior Trim | Trunk Lid Garnish | An installation caution has been added | ||
| 2016 | Legacy Outback | Brakes | Brake | Air Bleeding | The tightening tourque specs have been changed. |
| Brake | Stop Light Switch | Inspection item #2 has been changed | |||
| Body & Electrical/Wiring System | Exterior/Interior Trim | Trunk Lid Garnish | An installation caution has been added | ||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly illustrations have been changed a step has been deleted and the identification marker locations were added | ||
| 2015 | Legacy Outback | Brakes | Brake | Stop Light Switch | Inspection item #2 has been changed |
| Body & Electrical/Wiring System | Exterior/Interior Trim | Trunk Lid Garnish | An installation caution has been added | ||
| Suspension | Rear Suspension | Rear Shock Absorber | The disassembly and assembly procedures have been changed | ||
| 2011 | Legacy Outback | Heater & Airconditioner | HVAC System | Mode Door Actuator | Removal procedures have been added |
| Diagnostics | HVAC System | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC B1622 | ||
| 2010 | Legacy Outback | Heater & Airconditioner | HVAC System | Mode Door Actuator | Removal procedures have been added |
| Diagnostics | HVAC System | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC B1622 | ||
| 2009 | Legacy Outback | Diagnostics | Engine H4DOTC | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC P2444 |
| 2008 | Legacy Outback | Diagnostics | Engine H4DOTC | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC P2444 |
| 2007 | Legacy Outback | Diagnostics | Engine H4DOTC | Diagnostic Procedure with DTC | A change has been made to the trouble tree for DTC P2444 |
NUMBER: 18-198-20
DATE: 03/03/20
SaleBestseller No. 1
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)
- CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information
- Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly
- Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble emission codes in seconds after you fixed the problem. This device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle
- OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Pls confirm with our customer service whether it is compatible with your vehicle before purchasing
- Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car
SaleBestseller No. 2
FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light
- 【Diagnose Check Engine Light in Seconds – No Mechanic Needed】The FOXWELL NT301 OBD2 scanner instantly reads & clears engine fault codes (DTCs) with one click. Simply plug into the 16-pin DLC port, turn ignition on, and get accurate results within seconds—No prior car knowledge required. Save hundreds on dealership fees by knowing exactly what’s wrong before you visit a shop. The #1 choice car scanner for DIYers and car owners who want to take control of their vehicle’s health
- 【Clear & Reset CEL with Confidence】Unlike cheap code readers that just erase codes temporarily, NT301 works like all professional vehicle code readers: It clears the check engine light only after you’ve fixed the underlying issue. If the problem isn’t fully repaired, the fault code will reappear. So you’ll never get a false pass. Use the foxwell scanner to verify your repair work and drive with peace of mind
- 【Sm-og Check Helper – Know Your Pass/Fail Status Before the Test】With dedicated one-click I/M readiness hotkeys and a simple Red-Yellow-Green LED indicator, you’ll instantly know if your vehicle is ready for annual testing. Built-in speaker provides clear audio feedback. No guesswork—just confidence before you head to the test center. One less thing to worry about when inspection day comes
- 【Advanced OBDII Modes – O- 2 Sensor & EVAP Testing】NT301 go beyond basic code reading with enhanced OBD2 modes. Run an EVAP system check to assess fuel tank condition, and use the O- 2 sensor test to optimize air-fuel ratio, boosting fuel economy, cutting em- issions, and saving you money at the pump. The code reader for cars and trucks is like having a mini em-issions lab in your glove box
- 【Live Data Graphing – Spot Engine Issues in Real Time】View and log live sensor data in easy-to-read graphs with this OBD2 scanner diagnostic tool. Monitor ox- ygen sensors, fuel trims, coolant temperature, RPM, and more to spot suspicious values instantly. This obd scanner gives you professional-grade insight without the pro price tag—a feature you won’t find on basic $20 car code readers
SaleBestseller No. 3
ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow
- Understand Your Check Engine Light – The ANCEL AD410 OBD2 scanner helps everyday drivers quickly read and clear engine-related fault codes, view code definitions, and understand why the check engine light is on before visiting a repair shop. With 42,000+ built-in DTC lookups, this car code reader helps reduce guesswork and makes basic vehicle diagnostics easier for beginners and DIY users
- Full OBD2 Diagnostics Made Simple – More than a basic engine code reader, this OBD2 scanner diagnostic tool supports key OBDII functions including reading/clearing codes, live data, freeze frame, I/M readiness, O2 sensor test, EVAP test, vehicle information, and MIL status. It helps you check your car’s condition, verify repairs after the issue is fixed, and communicate with mechanics more confidently
- Live Date & Real-time Vehicle Insights – View real-time engine data such as RPM, coolant temperature, fuel trim, oxygen sensor readings, and other available OBD2 parameters directly on the screen. These live data readings help you better understand how your vehicle is running, spot abnormal patterns, and make more informed repair decisions instead of relying only on a warning light
- Smog Check Readiness At A Glance – Use the I/M readiness function before a smog check or emissions inspection to see whether your vehicle’s monitors are ready. This OBD2 code scanner helps you confirm if recent repairs have brought the system back to a ready state, reducing the chance of failed inspections, retests, wasted trips, and unnecessary inspection fees
- Works With Most OBD2 Vehicles – Compatible with most 1996 and newer U.S.-based OBD2 cars, SUVs, and light trucks, as well as many 2000 and newer EU/Asian OBD2 vehicles. Supports major OBDII protocols including CAN, ISO9141, KWP2000, J1850 VPW, and J1850 PWM. This automotive diagnostic scanner is designed for wide vehicle coverage; please check compatibility with your vehicle before purchase
SaleBestseller No. 4
MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow
- Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
- Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
- 2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.
- Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
- ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.
SaleBestseller No. 5
FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission
- [Easy to Use—Work Out of the Box] + [FOXWELL 2026 New Version] FOXWELL NT604 Elite scan tool is the 2026 new version from FOXWELL, designed for car owners who want to figure out the cause of issues before fixing car problems by scanning common systems like ABS, SRS, engine, and transmission. The NT604 Elite obd2 scanner diagnostic tool comes with the latest software—no need to waste time downloading software first. Plug the scanner into the OBDII port with OBDII cable to start the diagnosis.
- [Affordable] + [Reliable Car Health Monitor] Will you be confused what happens when the warning light of ABS/SRS/transmission/check engine flashes? Instead of taking your cars to dealership, this FOXWELL scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. Note：The device is a diagnostic tool, not a repair tool. To turn off a warning light, you must first physically repair the issue causing it. Only then can the scanner be used to clear the corresponding fault code.
- [5 in 1 Car Diagnostic Scanner] Compared with obd scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also serves as ABS/SRS scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance functions like reset or relearn. For the SRS system, NT604 Elite can read and clear common fault codes not caused by a crash, but crash/collision data cannot be cleared.
- [Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite ABS SRS scanner supports 60+ car brands from worldwide (America/Asia/Europe). You don’t need to pay extra software fee. AUTOVIN may not work on some older vehicles or certain vehicle brands. If AUTOVIN fails, please input the vin code manually or go to the Diagnostic Menu to select your vehicle model.
- [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level car scanner diagnostic tool only offers plastic bag to hold the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.
This product presentation was made with AAWP plugin.