2018 Subaru WRX Technical Service Bulletins

348 technical service bulletins (TSBs) are on record for the 2018 Subaru WRX. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10171105Jan 31, 2020Equipment, Electrical system, Visibility (wipers, defrost, mirrors). This bulletin announces availability of new power window switch assemblies.
• 10171101Jan 31, 2020Brakes, Electrical system. This bulletin announces availability of a new stop lamp switch for the models listed above equipped with LED - type rear combination lamps.
• 10171099Jan 30, 2020Engine cooling. This bulletin announces availability of a new vacuum hose assembly for the positive crankcase ventilation (PCV) system incorporating improved sealing to prevent potential oil seepage.
• 10171089Jan 17, 2020Equipment, Electrical system, Air bags. This Bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system.
• 10169845Dec 20, 2019Equipment. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. The exchange program policy can also be found in Sections 8.4.9 and 11.2.10 of your Claims Policies and Procedures Manual found in Subarunet.
• 10169881Dec 13, 2019Equipment, Electrical system. This bulletin announces availability of a new HVAC blower motor unit assemblies developed to address isolated concerns of the blower motor becoming inoperative. If this issues occurs on models with Auto A/C, the blower fan may become totally inoperative. If this issue occurs on models with Manual A/C, the blower fan may operate on high speed only. The root cause of these conditions is water intrusion into the…
• 10169868Dec 9, 2019Seats. This bulletin announces a change made to the leather front seat cushion covers to address isolated concerns of a sagging/loose fitting condition after an occupant leaves the seat as shown in the example photos below. A pattern revision was made to increase tension of the cover material and decrease the time it takes for the condition to disappear after an occupant leaves the seat.
• 10169864Dec 9, 2019Equipment, Electrical system. "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).
• 10169855Dec 5, 2019Engine cooling. Subaru of America, Inc. (Subaru) is initiating a service campaign for certain 2015-2018 Forester 2.0L Turbo and 2016-2018 WRX models which may experience a loosening of the front exhaust pipe nuts. On certain affected vehicles, the six (6) front exhaust pipe (EPF) nuts at the cylinder heads may not have been tightened sufficiently due to variations in production. As a result, these nuts may become loose during use…
• 10169834Dec 5, 2019Engine cooling. Subaru of America, Inc. (Subaru) is initiating a service campaign/ voluntary emissions recall for certain 2015-2018 Forester 2.0L Turbo and 2016-2018 WRX models which may experience a loosening of the fornt exhaust pip nuts.
• 10169833Dec 5, 2019Engine cooling. Subaru of America, Inc. (Subaru) is initiating a service campaign/ voluntary emissions recall for certain 2015-2018 Forester 2.0L Turbo and 2016-2018 WRX models which may experience a loosening of the fornt exhaust pip nuts.
• 10168585Nov 6, 2019Electrical system, Engine cooling. "This bulletin announces a design change made to the engine wiring harness to improve resistance to moisture. A detailed illustration describing the change is supplied below."
• 10166916Oct 18, 2019Air bags. This Service Information Bulletin announces a design change made to the side curtain and knee airbag modules on the models listed above to optimize commonization with the Japanese production parts. The change involves the mixture ratio of Argon to Helium used in the inflator gas: • OLD gas ratio: 94% Argon, 6% Helium • NEW gas ratio: 96% Argon, 4% Helium. All other specifications of these modules are unchanged.
• 10166913Oct 18, 2019Electrical system. This Service Information Bulletin provides the answer to potential inquiries regarding the STARLINK app being unable to play music files stored on a customer’s Android® phone / device through the head units (H/U) used in the applicable models listed above. This information is applicable ONLY to Android devices operating with Operating System (OS) version 10. IOS (AppleTM) devices are not affected.
• 10165497Sep 26, 2019Transmission and drivetrain. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. Investigation has identified likely sources of the seepage to be the sealant used on the CVT’s oil pump chain cover and the input shaft oil seal. The repair involves chain cover removal, a thorough cleaning and inspection of the sealing surfaces followed by re-sealing the…
• 10165512Sep 20, 2019Engine cooling. 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. There are five areas that should be closely inspected if an oil leak is reported by the customer: 1. The 6mm tapped hole casting boss area in the left-hand camshaft cap 2. The sealing surfaces between either…
• 10164447Aug 29, 2019Body and structure. This Service Information Bulletin announces a design change made to the rear bumper cover side mounting brackets. These new brackets provide increased clearance between the edges of the bumper cover and the corresponding quarter panels. This change will prevent them from contacting each other and possibly damaging their painted surfaces.
• 10164446Aug 29, 2019Transmission and drivetrain. "This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. Investigation has identified likely sources of the seepage to be the sealant used on the CVT’s oil pump chain cover and the input shaft oil seal. The repair involves chain cover removal, a thorough cleaning and inspection of the sealing surfaces followed by re-sealing…
• 10164394Aug 23, 2019Electrical system. "This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. The exchange program policy can also be found in Sections 8.4.9 and 11.2.10 of your Claims Policies and Procedures Manual found in Subarunet. "
• 10164184Aug 8, 2019Equipment, Electrical system. 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.
• 10164182Aug 5, 2019Electrical system, Engine cooling. This bulletin announces availability of a new Engine Control Module (ECM) for the models listed above designed to address DTC P2610: “ECM/PCM ENGINE OFF TIMER PERFORMANCE”. Under certain RARE conditions, an electrostatic surge may influence the ECM’s internal timer used after the engine is turned off and store a DTC P2610 in memory. Hardware in the ECM has been changed to eliminate any impact from…
• 10163563Jul 30, 2019Electrical system. This bulletin announces availability of a new Engine Control Module (ECM) for the models listed above designed to address DTC P2610: “ECM/PCM ENGINE OFF TIMER PERFORMANCE”. Under certain RARE conditions, an electrostatic surge may influence the ECM’s internal timer used after the engine is turned off and store a DTC P2610 in memory. Hardware in the ECM has been changed to eliminate any impact from…
• 10163526Jul 12, 2019Visibility (wipers, defrost, mirrors), Electrical system. "This bulletin announces availability of new power window switch assemblies developed to address the following customer concerns: • Power windows inoperative from the driver’s door master and / or passenger front door switch • Unable to remotely operate other door windows from the driver’s door master switch • One-Touch Auto Up / Down features inoperative from either / both front door switches"
• 10163525Jul 11, 2019Brakes. This Service Information bulletin announces instruction for application of additional lubrication between the brake caliper support and pad clips. This will prevent the pad from dragging due to corrosion buildup which may result in uneven or premature wear of the replacement brake pads. This additional instruction applies to all models with brake pads using the upper and lower pad clips and has been added to the…
• 10163017Jun 27, 2019Engine. 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.
• 10162998Jun 3, 2019Equipment. 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.
• 10161831May 28, 2019Equipment, Body and structure. This Service Information bulletin announces a design change made to the TGV assemblies used on the Forester Turbo models and WRXs listed above. Condensation resulting from EGR system operation may enter the area between the TGV shaft and bearing. Over time, corrosion can develop and impede movement of the TGV shaft and cause any of the DTCs P2004, 2005, 2006 and /or P2007 to set. The material of the TGV shaft has…
• 10161824May 21, 2019Equipment. Subaru Service and Technical Support Line Newletter.
• 10161822May 15, 2019Equipment. This Service Information bulletin announces a design change made to the retaining bolt used to secure the child anchors to the rear shelf plates on the models listed above. This change was made in support of parts communization with other similar mounting bolts. There is no change between the old and new bolt in terms of function or durability.
• 10161813May 6, 2019Equipment. To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool.
• 10160202Apr 25, 2019Equipment. 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.
• 10160214Apr 23, 2019Electrical system, 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.
• 10160211Apr 17, 2019Electrical system, Exterior lighting. This bulletin provides a procedure for replacing the rear combination lamp wiring harness. The harness is now available as a service part separate from the lamp assembly.
• 10160490Mar 8, 2019Engine cooling, Equipment. 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.
• 10160485Mar 4, 2019Equipment. This bulletin provides a procedure to follow for addressing customer concerns of a shuddering condition or chattering -type sound heard or felt when making sharp turns. If an applicable vehicle presents with the condition as described, it is recommended to perform the transfer clutch break-in procedure as described.
• 10155225Feb 22, 2019Equipment. 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.
• 10155220Feb 20, 2019Electrical system. This bulletin announces a design change to the CVT select lever (shifter) mechanism in response to isolated customer concerns of not being able to remove the key from the ignition switch when the vehicle is in Park. The cause is contamination of the Park-Range switch internal components.
• 10154412Jan 30, 2019Electrical 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.
• 10154419Jan 25, 2019Brakes. This Service Information bulletin announces instruction for application of additional lubrication between the brake caliper support and pad clips. This will prevent the pad from dragging due to corrosion buildup which may result in uneven or premature wear of the replacement brake pads. This additional instruction applies to all models with brake pads using the upper and lower pad clips and has been added to the…
• 10154417Jan 24, 2019Electrical system. This bulletin announces a design change made to the engine wiring harness to improve resistance to moisture. A detailed illustration describing the change is supplied below.
• 10154207Jan 10, 2019Equipment, Air bags. This Bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system.
• 10153627Dec 28, 2018Electrical system. 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.
• 10153178Nov 6, 2018Transmission and drivetrain, Electrical system. This bulletin announces a design change to the CVT select lever (shifter) mechanism in response to isolated customer concerns of not being able to remove the key from the ignition switch when the vehicle is in Park. The cause is contamination of the Park-Range switch internal components.
• 10150949Oct 26, 2018Transmission and drivetrain, Equipment. 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.
• 10150924Oct 26, 2018Transmission and drivetrain, Equipment. 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.
• 10150946Oct 22, 2018Transmission and drivetrain, 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.
• 10150921Oct 22, 2018Transmission and drivetrain, 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.
• 10150945Oct 19, 2018Equipment. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. The exchange program policy can also be found in Sections 8.4.9 and 11.2.10 of your Claims Policies and Procedures Manual found in Subarunet.
• 10150937Oct 12, 2018Electrical system, Equipment. 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.
• 10150936Oct 12, 2018Brakes. 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.

← All problems reported for the 2018 Subaru WRX