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Service bulletins for the 2011 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
02-141-132018-06-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE; ELECTRICAL SYSTEM. This Bulletin provides information regarding a design change to the rubber cap which covers the electrical connection at the oil pressure switch. The new cap provides better sealing and resistance to moisture intrusion which can compromise the electrical connection and in some cases, cause the oil pressure warning lamp to illuminate in error.
02-160-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING. This Service Information bulletin provides revised procedures for inspection and measurement of the cylinder block assembly to determine whether or not replacement is necessary. Read through and understand this information completely before proceeding with any repairs to the cylinder block. All Models with FA and FB Engines, 2011MY and Later.
02-157-14R-4-28-2018-06-11. Service bulletin. POWER TRAIN; ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Revised TSB. 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.
02-157-14R-4-13-2018-06-11. Service bulletin. ENGINE; POWER TRAIN. Revised TSB. 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.
02-172-18R2018-06-11. Service bulletin. ENGINE; EQUIPMENT. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
02-132-12R2018-06-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This Bulletin provides a procedure for diagnosis and determination of necessary part replacement in the event any of the ?AVCS Slow Response? or ?AVCS System Failure? DTCs listed above are found to be stored in the ECM memory. A possible cause of these conditions is contamination within the camshaft sprocket and / or oil control solenoid valve (OCV) mechanism.
02-172-18R2018-06-11. Service bulletin. ENGINE. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
02-157-14R2018-04-16. 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
02-157-14R2017-10-27. 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.
02-157-14R2017-10-27. 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.
15-202-162017-10-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM. This bulletin provides a procedure for removal of the accessory Turbo Boost Gauge and restoration of the vehicle to pre-installation (OEM) condition. Due to circumstances beyond the control of Subaru of America, Inc. (SOA), the accessory Turbo Boost Gauge, p.n. H501SFG500 is no longer available. In the interest of customer satisfaction, SOA will address customer concerns involving a failure of the gauge by returning the vehicle to it?s OEM configuration.
02-157-14R2017-10-27. 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.
02-168-172017-09-14. 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.
02-164-162017-08-14. 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
02-157-14R2017-03-08. 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.
02-131-12R2017-03-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. THE PURPOSE OF THIS BULLETIN IS TO PROVIDE PROCEDURES FOR THE DIAGNOSIS AND REPAIR OF OIL SEEPAGE WHICH MAY BE COMING FROM THE TIMING CHAIN COVER, FRONT CAMSHAFT CAP, CAMSHAFT CARRIER AND / OR UPPER OIL PAN.
02-157-14R2017-03-07. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SURFACE TREATMENT CHANGE TO OIL CONTROL PISTON RINGS
02-157-14R2017-03-06. 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.
02-157-14R2017-03-06. 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.
11-135-132017-03-03. Service bulletin. ENGINE. THIS BULLETIN ANNOUNCES THE AVAILABILITY OF ECM REPROGRAMMING FILES TO ADDRESS A FALSE CEL/MIL ILLUMINATION AND SETTING OF DTC P050A. THIS DTC CAN RESULT FROM SPECIFIC CLUTCH OPERATION (ON MT MODELS) AND / OR DRIVING PATTERNS OCCURRING IMMEDIATELY AFTER STARTING THE ENGINE.
02-131-12R2017-02-28. Service bulletin. ENGINE. THE PURPOSE OF THIS BULLETIN IS TO PROVIDE PROCEDURES FOR THE DIAGNOSIS AND REPAIR OF OIL SEEPAGE WHICH MAY BE COMING FROM THE TIMING CHAIN COVER, FRONT CAMSHAFT CAP, CAMSHAFT CARRIER AND / OR UPPER OIL PAN.
02-157-14R2017-02-27. 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."
02-162-152017-02-27. 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."
02-131-12R2017-02-22. Service bulletin. ENGINE. THE PURPOSE OF THIS BULLETIN IS TO PROVIDE PROCEDURES FOR THE DIAGNOSIS AND REPAIR OF OIL SEEPAGE WHICH MAY BE COMING FROM THE TIMING CHAIN COVER, FRONT CAMSHAFT CAP, CAMSHAFT CARRIER AND / OR UPPER OIL PAN.
11-133-132017-02-17. Service bulletin. ENGINE. THIS BULLETIN ANNOUNCES THE AVAILABILITY OF ECM REPROGRAMMING FILES TO ADDRESS A POSSIBLE EXTENDED ENGINE CRANKING CONDITION CAUSED BY CAMSHAFT POSITIONING AT THE TIME THE ENGINE IS SHUT OFF.

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