WenmarOpen by Wenmar Pro

Service bulletins for the 2008 Subaru Forester

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

158 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SubaruNet Announcement2024-07-01. Other. ELECTRICAL SYSTEM. This information announces reprograming file availability for Gen 4.5 Denso CP1.5 Audio and Navigation systems. Inprovement for CarPlay concerns with hands-free calls when the receiving party is not able to hear the caller.
01-168-09R2023-09-05. Service bulletin. LATCHES/LOCKS/LINKAGES; EQUIPMENT; ELECTRICAL SYSTEM. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
WQD402023-05-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. Subaru of America, Inc. has determined vehicles affected by this Service Program require front catalytic converter replacement and ECM reprogramming.
WQD402023-04-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Subaru Service Program WQD-40: Front Catalytic Converter Replacement & Engine Control Module (ECM) Reprogramming
0370122023-04-17. Service bulletin. ELECTRICAL SYSTEM. Repair Procedure for High-Pitched Sound from Extension Housing Area Using Latest Generation Production Parts
0116809R2023-03-13. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Replacement Key and Immobilizer info
0116809R2023-03-06. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Replacement Key and Immobilizer Info
15-302-222022-09-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
15-192-22R2022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin has been developed to outline the steps for gathering basic essential information during diagnosis and repair of the Infotainment concerns. (Applicable to all models with Harman or Denso CP1 Infotainment).
01-167-08R2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
01-168-09R2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information.
07-75-13R2020-04-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Bulletin provides information regarding DTC P0606 related specifically to the determination of this code on Forester Turbo and applicable WRX models.
07-131-18R2018-07-16. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides a measurement and adjustment procedure for the stop lamp switch. An improperly adjusted (or faulty) stop lamp switch can cause any of the DTCs listed to set and result in the related system?s (e. g. VDC and/or EyeSight) warning lamp to illuminate.
WVU31R2018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. 2.5 Liter N/A engine only. REVISED. Subaru of America, Inc. has determined that vehicles affected by this Service Program require ECM reprogramming. A modification to the Engine Control Module software logic has been developed to improve the performance of the emission control system. This software change will not adversely affect fuel economy or performance. This software update is intended to improve vehicle emissions when the vehicle is operated in cold weather and the engine is turned off and restarted within short periods of time such as in several minute intervals. The A/F sensor contains a heating element, which is controlled by the ECM, and which assists the sensor in reaching an optimum temperature, resulting in better accuracy. When the vehicle is operated under the conditions described above, there could be a longer than desired delay in the ECM?s turning on the A/F sensor heating element, resulting in higher than desired emissions. This software enhancement will correct that condition.
07-131-182018-03-13. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING:BRAKE LIGHTS. This bulletin provides a measurement and adjustment procedure for the stop lamp switch. An improperly adjusted (or faulty) stop lamp switch can cause any of the DTCs listed above to set and result in the related system?s (e. g. VDC and/or EyeSight) warning lamp to illuminate.
WQD-402016-09-16. Service bulletin. ELECTRICAL SYSTEM:CYBERSECURITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ELECTRICAL SYSTEM:SOFTWARE. SUBARU OF AMERICA, INC. HAS DETERMINED VEHICLES AFFECTED BY THIS SERVICE PROGRAM REQUIRE FRONT CATALYTIC CONVERTER REPLACEMENT AND ECM REPROGRAMMING. FOR VEHICLES AFFECTED BY THIS SERVICE PROGRAM, EFFICIENCY OF THE FRONT CATALYTIC CONVERTER MAY DEGRADE OVER TIME. IF THE CATALYTIC CONVERTER EFFICIENCY DEGRADES BEYOND AN ACCEPTABLE LEVEL, THE VEHICLE MAY BE RELEASING AIR POLLUTANTS WHICH EXCEED CALIFORNIA STANDARDS. TO CORRECT THIS CONDITION, IT WILL BE NECESSARY TO REPLACE THE FRONT CATALYTIC CONVERTER AND REPROGRAM THE ECM SOFTWARE LOGIC, IMPROVING MANAGEMENT OF THE CATALYTIC CONVERTER. THIS SOFTWARE CHANGE WILL NOT ADVERSELY AFFECT FUEL ECONOMY OR PERFORMANCE OF THE VEHICLE.
WQD-40DA2016-09-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ELECTRICAL SYSTEM:SOFTWARE. SUBARU OF AMERICA, INC. HAS DETERMINED THAT VEHICLES AFFECTED BY THIS SERVICE PROGRAM REQUIRE FRONT CATALYTIC CONVERTER REPLACEMENT AND ECM REPROGRAMMING. FOR VEHICLES AFFECTED BY THIS SERVICE PROGRAM, EFFICIENCY OF THE FRONT CATALYTIC CONVERTER MAY DEGRADE OVER TIME. IF THE CATALYTIC CONVERTER EFFICIENCY DEGRADES BEYOND AN ACCEPTABLE LEVEL, THE VEHICLE MAY BE RELEASING AIR POLLUTANTS THAT EXCEED CALIFORNIA STANDARDS. TO CORRECT THIS CONDITION, IT WILL BE NECESSARY TO REPLACE THE FRONT CATALYTIC CONVERTER AND REPROGRAM THE ENGINE CONTROL MODULE SOFTWARE LOGIC WHICH IMPROVES MANAGEMENT OF THE CATALYTIC CONVERTER. THIS SOFTWARE CHANGE WILL NOT ADVERSELY AFFECT FUEL ECONOMY OR PERFORMANCE OF THE VEHICLE. REPLACEMENT PARTS AND ECM REPROGRAMMING PAK FILES WILL NOT BE AVAILABLE FOR ALL MODELS AT THE TIME THIS SERVICE PROGRAM IS INITIALLY RELEASED. PAK FILES WILL BE AVAILABLE IN ACCORDANCE WITH THE SCHEDULE FOUND ON PAGE 4 OF THE WQD-40 BULLETIN. ADDITIONALLY, BECAUSE THIS PROGRAM AFFECTS A HIGH VOLUME OF VEHICLES WITHIN THE AFFECTED STATES, MAILING OF OWNER NOTIFICATION LETTERS WILL BE PHASED ACCORDING TO THE FOLLOWING SCHEDULE. THIS SCHEDULE COINCIDES WITH REPLACEMENT PART AND PAK FILE AVAILABILITY.
WVM-232011-06-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM:SOFTWARE. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A SOFTWARE PROBLEM IS CAUSING THE CATALYTIC CONVERTER TO DEGRADE WHEN DRIVING AT HIGH SPEEDS. THIS WILL CAUSE THE ENGINE LIGHT TO COME ON. *RM
SB-WVM-232010-04-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ENGINE CONTROL MODULE (ECM) REPROGRAMMING. UNDER CERTAIN SEVERE DRIVING PATTERNS, SUCH AS HIGH SPEED HIGHWAY/UPHILL DRIVING AND/OR ACCELERATING WITH HIGH ENGINE REVOLUTIONS, THE EFFICIENCY OF AN AFFECTED VEHICLE'S CATALYTIC CONVERTER MAY BEGIN TO DEGRADE BEYOND DESIGN PARAMETERS. CSC LETTER WAS RECEIVED. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.