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Service bulletins for the 2018 Subaru Crosstrek

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.

525 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
11-200-20R2020-03-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin announces the availability of reprogramming files to optimize the Engine Control Module (ECM).
11-196-202020-02-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. This Service Information Bulletin announces part number change information for the Positive Crankcase Ventilation (PCV) valves used on the models listed above.
WUP-01R2020-01-07. Service bulletin. ENGINE AND ENGINE COOLING. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2017-2018 model year Impreza vehicles and certain 2018 model year Crosstrek vehicles in which the Positive Crankcase Ventilation (PCV) valve may be defective.
WUQ-02R2020-01-07. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 model year Impreza and 2018-2019 Crosstrek vehicles due to improper Engine Control Module (ECM) programming. A total of 466,205 U.S. vehicles will be affected by this recall.
WUP-01R2019-12-02. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2017-2018 model year Impreza vehicles and certain 2018 model year Crosstrek vehicles in which the Positive Crankcase Ventilation (PCV) valve may be defective.
WUP-01R2019-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE AND ENGINE COOLING. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2017-2018 model year Impreza vehicles and certain 2018 model year Crosstrek vehicles in which the Positive Crankcase Ventilation (PCV) valve may be defective.
WUP-012019-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE AND ENGINE COOLING. Subaru f America, Inc. (Subaru) is initiating a new safety recall for certain 2017-2018 model year Impreza vehicles and certain 2018 model year Crosstrek vehicles in which the Positive Crankcase Ventilation (PCV) valve may be defective.
Subarunet Announ2019-11-01. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION; ENGINE AND ENGINE COOLING. The remedy is now available for this recall. Please refer to the WUQ-02 Product campaign Bulletin on STIS.
WUQ-02R2019-11-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 model year Impreza and 2018-2019 Crosstrek vehicles due to improper Engine Control Module (ECM) programming. A total of 466,205 U.S. vehicles will be affected by this recall.
02-163-16R2019-07-22. Service bulletin. ENGINE. This Service Information bulletin provides new inspection and repair procedures for AVCS (Active Valve Control System) -related DTCs on the FA and FB engine equipped models listed above. The applicable Service Manuals will be revised with this new information in the near future.
16-121-192019-07-01. Service bulletin. ENGINE; POWER TRAIN. This bulletin provides a procedure for addressing a limited number of concerns involving a tapping -type sound originating from the area where the engine and CVT are joined. On affected vehicles, the sound can be heard easiest after the engine is fully warmed up.
02-163-16R2019-05-28. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Service Information bulletin provides new inspection and repair procedures for AVCS (Active Valve Control System) -related DTCs on the FA and FB engine equipped models listed above. The applicable Service Manuals will be revised with this new information in the near future.
02-170-17R2019-05-20. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID; ENGINE. 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.
11-189-192019-03-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). This Service Information bulletin announces a change to the required thread sealer used when installing the PCV valve into the engine block. The previously used material may solidify and cause damage to the engine block threads during PCV valve removal.
07-141-182018-12-10. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. This Service Information Bulletin announces a change to the retaining clip used to secure the engine harness on the models listed above. The change to a ?Tree Type? clip from an ?Anchor Type? was made to secure the harness tighter and improve assembly line productivity. Comparison images are provided below.
07-141-182018-12-10. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. This Service Information Bulletin announces a change to the retaining clip used to secure the engine harness on the models listed above. The change to a ?Tree Type? clip from an ?Anchor Type? was made to secure the harness tighter and improve assembly line productivity. Comparison images are provided below.
WTT-79R2018-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE. Subaru of America, Inc. (SOA) is initiating a service program for certain 2017-2019 MY Impreza vehicles, and certain 2018-2019 MY Crosstrek vehicles. This service program involves installation of reprogramming files to optimize the ECM. Subaru has determined that due to an engine programming issue, the affected vehicles may stall when coming to a stop or driving at a low speed (under 15 MPH) when the air conditioning is operating at maximum capacity. Under certain hot weather conditions, when the vehicle?s air conditioning is running at full capacity, the engine programming may not account for the additional load placed on the engine when slowing down or coming to a stop. In some cases, this could cause the engine to stall requiring the driver to immediately restart the vehicle.
02-175-18R2018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). This bulletin announces a design change to the PCV valve used on the models listed above. Customers may have concerns of white smoke from the exhaust and / or in some cases, excessive engine oil consumption.
WTT-79R2018-10-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE. Subaru of America, Inc. (SOA) is initiating a service program for certain 2017-2019 MY Impreza vehicles, and certain 2018-2019 MY Crosstrek vehicles. This service program involves installation of reprogramming files to optimize the ECM. Subaru has determined that due to an engine programming issue, the affected vehicles may stall when coming to a stop or driving at a low speed (under 15 MPH) when the air conditioning is operating at maximum capacity. Under certain hot weather conditions, when the vehicle?s air conditioning is running at full capacity, the engine programming may not account for the additional load placed on the engine when slowing down or coming to a stop. In some cases, this could cause the engine to stall requiring the driver to immediately restart the vehicle.
02-175-182018-08-20. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin announces a design change to the PCV valve used on the models listed above. Customers may have concerns of white smoke from the exhaust and / or in some cases, excessive engine oil consumption.
02-176-182018-07-16. Service bulletin. ENGINE AND ENGINE COOLING. This Service Information bulletin announces a design change to the upper oil pan baffle plate used on the models listed above. The new plate has a relief to allow for use of an oil level sensor which will be used in future production.
02-175-182018-06-18. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin announces a design change to the PCV valve used on the models listed above. Customers may have concerns of white smoke from the exhaust and / or in some cases, excessive engine oil consumption.
02-170-172018-04-02. 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.

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