Service bulletins for the 2015 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.
502 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Engine are shown. Show all
| 07-133-18 | 2018-06-11. Service bulletin. ELECTRICAL SYSTEM; ENGINE. 2.0L Turbor Models only. This Service Information Bulletin announces design changes to the engine?s knock sensor which will help improve vehicle assembly line efficiency and increase durability. In some cases, the Check Engine light may illuminate and a knock sensor-related DTC set in the ECM memory: P0327, P0328, P0332 and P0333. |
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| 02-173-18 | 2018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. 2.0L Turbo Models only. This bulletin announces availability of a special turbocharger air intake duct designed to prevent EXTREMELY RARE occurrences of ice formation from condensation in the duct?s PCV system passages. |
| 11-164-16 | 2018-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Dated 4/29/2016 although posted on 5/2/2016. 2.0L DI Turbo models only. This bulletin announces the availability of reprogramming files to optimize the ECM. These files will address customer concerns of a slight surging / decrease in engine power condition on light acceleration during high ambient temperatures. |
| 02-157-14R | 2018-04-16. Service bulletin. ENGINE; POWER TRAIN:MANUAL TRANSMISSION. 2013-14MY Legacy and Outback Models with 2.5L FB Engines, 2011-14MY Forester Models with 2.5L FB Engines, 2015 MY Forester (Manual Transmissions Only), with 2.5L FB Engines, 2012-13 MY Impreza and XV Crosstrek Models with 2.0 FB Engines, 2014-15 MY Impreza and XV Crosstrek Models (Manual Transmissions Only) with 2.0 FB Engine As part of our dedication to customer satisfaction, Subaru of America, Inc. is initiating a program to extend the original New Car Powertrain Limited Warranty coverage for excessive engine oil consumption on applicable vehicles to 8 years / 100,000 miles from the original warranty start date. This Warranty Extension will not cover any excessive engine oil consumption found to be a result of any condition(s) other than those specifically described in this bulletin |
| WQW-58R | 2018-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Subaru of America, Inc. has determined that vehicles affected by this Service Program require ECM reprogramming. This bulletin includes the service procedure for diagnosis and repair of customer concerns involving engine idle roughness or, in some cases, engine noise and/or damage resulting from spark knock (pre-ignition). The Engine Control Module logic has also been optimized requiring the ECM reprogramming. The new logic optimizes the ECM for control of the following parameters: * Change to Fuel Cut control when fuel level is extremely low / near empty * Change to improve idle smoothness / quality * Change to boost pressure control under wide-open throttle (WOT) conditions. Under certain high engine load driving conditions, spark knock can occur which results in elevated cylinder temperatures and pressures. Over time, excessive erosion of the spark plugs and possible damage to the pistons can be consequences of continued operation with these conditions present. |
| 02-170-17 | 2018-04-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin announces part information for new Active Valve Control System (AVCS) oil control solenoid valves (OCV) which contain a redesigned internal oil seal. The new seal will eliminate potential oil seepage into the wire harness connector portion of the valve. If oil seeps into the connector, over time, the Check Engine lamp may illuminate and set various AVCS-related DTCs. |
| 02-157-14R | 2017-10-27. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. Refer to bulletin for engine/transmission type. As part of our dedication to customer satisfaction, Subaru of America, Inc. is initiating a program to extend the original New Car Powertrain Limited Warranty coverage for excessive engine oil consumption on applicable vehicles to 8 years / 100,000 miles from the original warranty start date. This Warranty Extension will not cover any excessive engine oil consumption found to be a result of any condition(s) other than those specifically described in this bulletin. This condition must be verified during an inspection and when determined necessary, an oil consumption test performed by an authorized Subaru retailer. SOA will inform vehicle owners this condition may exist via a customer letter. For vehicles within the coverage guidelines listed in this bulletin, customers can schedule an inspection appointment with an authorized Subaru retailer. IMPORTANT: ALWAYS perform a Vehicle Coverage Inquiry on Subarunet to determine eligibility for this Warranty Extension before proceeding. The VIN should also be checked for any open campaigns or recalls at this time. |
| 11-169-16 | 2017-10-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Turbo models only. This bulletin announces the availability of reprogramming files to optimize the ECM. These new files will address customer concerns of: ? Spark knock (ping) during high intake air temperature operation ? Surge on acceleration due to phantom knock detection ? Check Engine light illumination resulting from DTC P2270 and / or DTC P2270 and / or P0137 being stored in the ECM memory. |
| 02-157-14R | 2017-10-27. Service bulletin. ENGINE. 2013-14MY Legacy and Outback Models with 2.5L FB Engines - 2011-14MY Forester Models with 2.5L FB Engines - 2015 MY Forester (Manual Transmissions Only) with 2.5L FB Engines - 2012-13 MY Impreza and XV Crosstrek Models with 2.0 FB Engines - 2014-15 MY Impreza and XV Crosstrek Models (Manual Transmissions Only) with 2.0 FB Engines. As part of our dedication to customer satisfaction, Subaru of America, Inc. is initiating a program to extend the original New Car Powertrain Limited Warranty coverage for excessive engine oil consumption on applicable vehicles to 8 years / 100,000 miles from the original warranty start date. This Warranty Extension will not cover any excessive engine oil consumption found to be a result of any condition(s) other than those specifically described in this bulletin. This condition must be verified during an inspection and when determined necessary, an oil consumption test performed by an authorized Subaru retailer. SOA will inform vehicle owners this condition may exist via a customer letter. For vehicles within the coverage guidelines listed in this bulletin, customers can schedule an inspection appointment with an authorized Subaru retailer. |
| 10-84-16R | 2017-10-27. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:CLUTCH ASSEMBLY; ELECTRICAL SYSTEM. This bulletin announces the availability of a new Air Conditioning compressor / clutch assembly to address customer concerns of the system not operating. Electrical windings located inside the clutch assembly have been changed to eliminate the condition. The service procedure will involve replacement of the A/C compressor and clutch as a complete assembly. |
| 11-161-16 | 2017-10-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin announces the availability of new reprogramming files for optimizing the ECM to address the following customer concern: ? Rough idle after a warm engine restart. In rare cases, DTC P0300 may also be stored. |
| 02-157-14R | 2017-10-27. Service bulletin. ENGINE AND ENGINE COOLING. Revised Service Bulletin: Surface Treatment Change To Oil Control Piston Rings This bulletin announces information regarding a major change to the repair procedures previously outlined in Service Bulletins 02-143-13R, 02-144-13R and 02-145-13R. |
| ERSV | 2017-10-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This is to advise that the Subaru Claim System has been updated to accept claims for Emission repairs on vehicles with a salvage title. This coverage applies to all emission repairs within the warranty coverage period. Valid claims for salvage vehicles are Recalls, SAS Maintenance, and Warranty for Emission repairs only. Please make a note of this important system enhancement. Questions may be directed to the Subaru Claims helpline at 1866SUBARU2 (18667822782). |
| WQW58 | 2017-10-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Subaru of America, Inc. has initiated a Service Program to reprogram the Engine Control Module (ECM) on certain 2015 model year WRX vehicles and certain 2014 and 2015 model year 2.0XT Forester vehicles equipped with a 2.0 liter turbocharged engine, to address a possible pre?ignition issue. |
| 02-168-17 | 2017-09-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ENGINE. This Service Information bulletin announces a material change to the engine accessory drive / v-belt made to address customer concerns of a slipping belt (squeal or chirping) sound. |
| 02-166-17R | 2017-09-14. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines design changes made to the upper oil pan assembly on FA and FB engines used on the models listed above. There have been isolated cases where the sealer used between the upper oil pan and the crankcase has become displaced resulting in engine oil seepage. Revisions made to the upper oil pan casting: * The mating flange thickness of the casting in the area identified as the cause for the seepage has been increased by 5.5mm. (See images provided in the Parts Information section below.) This thickness increase creates the need for a longer bolt to provide proper tightening and retention. * An additional mounting point has been added to the ribbing inside the casting to increase retention of the steel baffle plate and eliminate vibration. |
| 11-164-16R | 2017-08-14. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. This bulletin announces the availability of reprogramming files to optimize the ECM. These files will address customer concerns of a slight surging / decrease in engine power condition between approx. 2000-2500 RPM on light acceleration during high ambient temperatures (intake air temperatures exceeding 104 deg. F). |
| 02-166-17 | 2017-08-14. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines design changes made to the upper oil pan assembly on FA and FB engines used on the models listed above. There have been isolated cases where the sealer used between the upper oil pan and the crankcase has become displaced resulting in engine oil seepage. |
| 02-164-16 | 2017-08-14. Service bulletin. ENGINE AND ENGINE COOLING. This Service Information bulletin announces a design change to the internal contact portion of the oil pressure switch to increase durability |
| 02-157-14R | 2017-03-08. Service bulletin. EQUIPMENT; ENGINE. THIS BULLETIN ANNOUNCES INFORMATION REGARDING A MAJOR CHANGE TO THE REPAIR PROCEDURES PREVIOUSLY OUTLINED IN SERVICE BULLETINS 02-143-13R, 02-144-13R AND 02-145-13R. THESE BULLETINS PROVIDED A REPAIR PROCEDURE FOR THE REPLACEMENT OF THE PISTON RINGS TO ADDRESS VERIFIED CONCERNS OF UNUSUAL ENGINE OIL CONSUMPTION. VEHICLES CONFIRMED AS HAVING THIS CONDITION WHICH ARE WITHIN THE SUPPLIED VIN RANGES WILL NO LONGER BE REPAIRED WITH PISTON RING REPLACEMENT. THE REVISED REPAIR PROCEDURE TO ADDRESS VERIFIED UNUSUAL OIL CONSUMPTION CONCERNS ON THESE SPECIFIC VEHICLES WILL CONSIST OF REPLACING THE ENGINE SHORT BLOCK ASSEMBLY. |
| 11-148-14R | 2017-03-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. REPROGRAMMING FILE AVAILABILITY FOR OIL LEVEL DETECTION |
| 02-157-14R | 2017-03-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. THIS BULLETIN ANNOUNCES INFORMATION REGARDING A MAJOR CHANGE TO THE REPAIR PROCEDURES PREVIOUSLY OUTLINED IN SERVICE BULLETINS 02-143-13R, 02-144-13R AND 02-145-13R. THESE BULLETINS PROVIDED A REPAIR PROCEDURE FOR THE REPLACEMENT OF THE PISTON RINGS TO ADDRESS VERIFIED CONCERNS OF UNUSUAL ENGINE OIL CONSUMPTION. VEHICLES CONFIRMED AS HAVING THIS CONDITION WHICH ARE WITHIN THE SUPPLIED VIN RANGES WILL NO LONGER BE REPAIRED WITH PISTON RING REPLACEMENT. THE REVISED REPAIR PROCEDURE TO ADDRESS VERIFIED UNUSUAL OIL CONSUMPTION CONCERNS ON THESE SPECIFIC VEHICLES WILL CONSIST OF REPLACING THE ENGINE SHORT BLOCK ASSEMBLY. |
| 02-157-14R | 2017-03-06. Service bulletin. ENGINE. THIS BULLETIN ANNOUNCES INFORMATION REGARDING A MAJOR CHANGE TO THE REPAIR PROCEDURES PREVIOUSLY OUTLINED IN SERVICE BULLETINS 02-143-13R, 02-144-13R AND 02-145-13R. THESE BULLETINS PROVIDED A REPAIR PROCEDURE FOR THE REPLACEMENT OF THE PISTON RINGS TO ADDRESS VERIFIED CONCERNS OF UNUSUAL ENGINE OIL CONSUMPTION. VEHICLES CONFIRMED AS HAVING THIS CONDITION WHICH ARE WITHIN THE SUPPLIED VIN RANGES WILL NO LONGER BE REPAIRED WITH PISTON RING REPLACEMENT. THE REVISED REPAIR PROCEDURE TO ADDRESS VERIFIED UNUSUAL OIL CONSUMPTION CONCERNS ON THESE SPECIFIC VEHICLES WILL CONSIST OF REPLACING THE ENGINE SHORT BLOCK ASSEMBLY. |
| 02-162-15 | 2017-02-27. Service bulletin. ENGINE. "THIS SERVICE INFORMATION BULLETIN ANNOUNCES A DESIGN CHANGE TO THE OIL PRESSURE SWITCH ASSEMBLY. NICKEL PLATING HAS BEEN APPLIED TO THE INTERNAL SWITCH CONTACTS TO ENHANCE THEIR DURABILITY AND REDUCE THE POSSIBILITY OF POOR CONTACT WHICH COULD AFFECT OPERATION OR CAUSE IMPROPER ILLUMINATION OF THE OIL PRESSURE WARNING LAMP. A SMALL PILOT PORTION WAS ADDED TO THE THREADED AREA ON P.N. 25240KA051 AS SHOWN IN THE ILLUSTRATION BELOW." |
| 11-148-14R | 2017-02-07. Service bulletin. ENGINE. THIS BULLETIN ANNOUNCES THE AVAILABILITY OF REPROGRAMMING FILES AND A REVISED OIL LEVEL SWITCH TO OPTIMIZE THE ECM LOGIC FOR ENGINE OIL LEVEL DETECTION IN THE EVENT OF FALSE OR PREMATURE LOW ENGINE OIL LEVEL WARNING LAMP ILLUMINATION. REVISED TO INCREASE ENGINE OIL QUANTITIES. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.