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Service bulletins for the 2018 Subaru WRX

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.

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

By type

By component

By trouble code

Bulletins, newest first
03-82-182018-12-10. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. This Service Information bulletin announces a design change to the clutch release bearing used on the models as listed above. During assembly of the bearing, a different type of grease is used which has a higher resistance to heat. In cases where the operator keeps a foot on the clutch pedal for extended periods, an increased amount of heat is generated which can cause the grease inside the bearing to deteriorate. In a case of prolonged clutch pedal application, seizure of the bearing can occur with potential damage to other related components.
03-79-18R2018-12-10. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY; EQUIPMENT. This bulletin announces a change to the clutch system components optimizing their durability and resistance to certain severe driving conditions including high-temperature operation.
15-199-16R2018-12-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin announces reprogramming file availability and the software installation procedure to address a group of operational concerns received from the field and listed below involving the Clarion Display Audio unit with 6.2? display.
06-66-182018-12-10. Service bulletin. SERVICE BRAKES, AIR:DISC:ROTOR; SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR. This Service Information bulletin announces a design change made to the front brake rotors used on the models listed above. The change makes it easier to identify these parts from those used on other models.
02-179-182018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This Service Information Bulletin announces a change to the procedure and sequence used for torqueing the cylinder head bolts on the EJ25 turbocharged engine used in the 2015-2018MY STI.
16-117-182018-12-10. Service bulletin. POWER TRAIN. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Powertrain Warranty coverage for the Continuously Variable Transmission (CVT) on the above listed models and model years from the original five (5) years or sixty thousand (60,000) miles (whichever comes first) to ten (10) years or one-hundred thousand (100,000) miles (whichever comes first). This change is not in response to any specific condition, rather it is to provide customers with added assurance regarding the function and overall performance of their CVT.
15-208-17R2018-12-10. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. This Service Information bulletin announces availability of an enhancement to the Gracenote database included in the vehicles listed above equipped with F10 7? Navigation and 7? Display Audio head units. When the user plays a pre-recorded CD, Gracenote recognizes the disc then shows the artist and track name information along with the album cover art on the head unit display (when available). This enhancement brings the currently installed database up to date with the most recent information available.
16-116-182018-11-05. Service bulletin. EQUIPMENT; LATCHES/LOCKS/LINKAGES. This Service Information bulletin provides details about revised CVT select lever (shifter) components. The shape of the lock plate and output of the shift lock solenoid have been changed.
06-64-182018-11-05. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS. This Service Information bulletin provides a recommended procedure to follow when reinstalling the brake hose banjo bolts used with (front / rear) Brembo brake calipers.
15-232-182018-10-01. Service bulletin. VISIBILITY; EXTERIOR LIGHTING:FOG LIGHTS. This Service Information bulletin announces a change made to the lens portion of the fog light assembly. The new lens has optimized light distribution characteristics while remaining interchangeable with the original type.
02-178-182018-10-01. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. This Service Information bulletin announces a design change made to the rubber timing hole access plug to improve its retention and prevent water intrusion into the converter case.
15-205-16R2018-10-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. This bulletin announces new reprogramming file availability and the software installation procedure to address additional operational concerns received from the field and listed below involving ?Gen 2? F10 Navigation and Display Audio units with 7? display. The procedure will involve downloading the applicable software update files then loading them onto two flash drives for audio unit installation.
07-139-18R2018-10-01. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. This bulletin outlines a design change made to the inner lens extension portion of the LED headlamp assembly. Under the right conditions, the shape of the lens for the actual head lamp light source can cause sunlight to be focused onto the extension portion of the lens resulting in deformation. A heatresistant shade has been added to protect the affected area.
15-205-16R2018-08-20. Service bulletin. EQUIPMENT. procedure to address additional operational concerns received from the field and listed below involving ?Gen 2? F10 Navigation and Display Audio units with 7? display. The procedure will involve downloading the applicable software update files then loading them onto two flash drives for audio unit installation. It is important to read through and understand this information completely before proceeding. These latest software updates contain new logic.
12-234-182018-08-20. Service bulletin. VISIBILITY:WINDSHIELD. This bulletin provides a repair procedure for replacing the foam cushion installed between the top front edge of the IP and the windshield glass. Use the supplied Service Procedure to address a customer concern involving the foam cushion becoming visible above the IP near the defroster vent outlets.
07-137-182018-08-20. Service bulletin. STEERING. Models with Automatic Headlight Beam Leveler System only. This Service Information bulletin announces a revision to the diagnostic procedure used when diagnosing either DTC B2910 or 2911 ?Steering Responsive Headlight Communication? LH or RH.
06-63-18R2018-08-20. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a design change to the EPB adapter cord harness connector. In some cases, the retaining tab of the connector may become damaged as a result of removal or installation for diagnosis and later and cause DTC C1956 or C1957 to set and the brake warning lamp to illuminate. The retaining tab portion of the connector has been changed to improve its durability and prevent recurrence of the DTC. If there is no prior history of disconnection and the connector lock tab is not damaged, check for another possible cause for these DTCs.
15-199-16R2018-07-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin announces reprogramming file availability and the software installation procedure to address a group of operational concerns received from the field and listed below involving the Clarion Display Audio unit with 6.2? display. The procedure will involve downloading the applicable software update files from Subarunet then loading them onto a flash drive for audio unit installation.
12-243-182018-07-16. Service bulletin. STRUCTURE. This bulletin replaces TSB 12-201-16R and provides a new repair procedure to address customer concerns of the hood scoop scrubbing the finish of the hood panel in the areas shown in the photo. Due to different expansion rates between the metal hood panel and the resin material used for the hood scoop, the edges of the scoop?s rear corners may come in contact with the hood panel and abrade the finish.
15-222-182018-06-18. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT. This bulletin announces a design change to the A/C Condenser receiver-dryer assembly. The change involves the addition of a rubber end cap and retaining clip onto the bottom of the receiver-dryer tank portion to prevent corrosion intrusion and enhance sealing.
15-214-17R2018-06-18. Service bulletin. EQUIPMENT. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
12-241-182018-06-18. Service bulletin. EQUIPMENT; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. 4 DOOR MODELS ONLY. This bulletin announces a change made to the trunk lid lock (latch) assembly. The purpose of this change is to improve parts integration (or ?commonality?) between models. This change is not intended to address any specific customer concern.
12-238-18R2018-06-18. Service bulletin. EQUIPMENT; STRUCTURE. This bulletin announces a design change to the front door checkers used on the models listed. The new checker mechanism provides a more ?positive feel? of the detents or check positions as the front doors are opened and closed.
12-231-18R2018-06-11. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE. This bulletin announces a design change to the air vent grille located in the lower portion of the trunk (or cargo) area. The shutters of the vent grille are designed to open briefly and relieve cabin pressure when the doors are shut with the windows fully closed. The vent grilles have rubber ?shutters? which occasionally, may catch on the frame (case) portion and not close properly allowing outside air / odor to enter the cabin.
12-231-18R2018-06-11. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE; STRUCTURE:FRAME AND MEMBERS. This bulletin announces a design change to the air vent grille located in the lower portion of the trunk (or cargo) area. The shutters of the vent grille are designed to open briefly and relieve cabin pressure when the doors are shut with the windows fully closed. The vent grilles have rubber ?shutters? which occasionally, may catch on the frame (case) portion and not close properly allowing outside air / odor to enter the cabin.

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