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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.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
15-205-16R2019-08-30. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL. 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.
11-191-19R2019-08-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL 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 electrostatic surges.
11-191-192019-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL 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 electrostatic surges.
07-152-19R2019-08-06. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM; VISIBILITY. "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"
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.
07-150-192019-05-20. Service bulletin. ELECTRICAL SYSTEM:WIRING; 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.
16-112-18R2019-03-25. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; ELECTRICAL SYSTEM:IGNITION. 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.
07-146-192019-03-11. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING. 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.
15-205-16R2019-03-11. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. 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.
11-188-192019-03-11. Service bulletin. ENGINE; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This bulletin announces availability of reprogramming files to optimize the ECM on the STI models listed with EJ2.5 engine and manual transmission. These files enhance engine misfire diagnosis to reduce the possibility of an incorrect detection of DTC P0300: RANDOM / MULTIPLE CYLINDER MISFIRE DETECTED. The DTC may set during frequent accelerator pedal on and off at highway speed.
15-205-16R2019-02-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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.
16-112-18R2019-02-19. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION. 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.
15-199-16R2018-12-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. 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.
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.
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.
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.
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.
17-17-13R2018-05-29. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. NOTE: The Airbag systems used on previous and current WRX, STI and Tribeca models are NOT equipped with EDR functionality. This Bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system. The function of the EDR is best explained using the following statements found in the vehicle Owner?s Manual: ?This vehicle is equipped with an event data recorder (EDR). The main purpose of an EDR is to record, in certain crash or near crash-like situations such as an airbag deployment or hitting a road obstacle, data that will assist in the understanding how a vehicle?s systems performed. The EDR is designed to record data related to vehicle dynamics and safety systems for a short period of time, typically 30 seconds or less. The EDR in this vehicle is designed to record such data as: ? How various systems in your vehicle were operating; ? Whether or not the driver and passenger safety belts were buckled/fastened; ? How far (if at all) the driver was depressing the accelerator and/or brake pedal; ? How fast the vehicle was traveling. This data can help provide a better understanding of the circumstances in which crashes and injuries occur.
07-75-13R2018-04-16. Service bulletin. ELECTRICAL SYSTEM:IGNITION; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. On Forester Turbo and applicable WRX models, after re-connecting the battery, if the ignition switch is turned back ?ON? within one minute after the first time the ignition is turned ?OFF?, it becomes possible for the CEL to illuminate storing DTC P0606 in memory. The code will not occur immediately, but may occur after a period of time depending upon how the vehicle is operated
06-61-182018-04-16. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces availability of new VDC Control Module & Hydraulic Units (VDCCM&H/U) to address isolated customer concerns of the green Hill Holder light blinking and cancel warning alarm sounding during cranking / starting the engine
UPDATE - Removal2018-03-13. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). The corrected update files are now available for download from Subarunet. TSB 15-20516R has been revised with new file names where applicable and re-posted to STIS.
15-205-16R2018-03-13. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING 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.

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