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Service bulletins for the 2018 Subaru Impreza

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.

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

By type

By component

By trouble code

By topic

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

Bulletins, newest first
Subarunet Announcement2024-08-05. Other. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Update Safety Recall: WRG-22 Impreza Headlamp Non-Compliance. To maximize completions of the WRG22 recall while preventing a potential stock-out situation, Subaru will re-notify affected vehicle owners in small controlled phases described in the announcement.
15-211-17R2024-08-05. Service bulletin. ELECTRICAL SYSTEM. "This bulletin addresses reprogramming file availability and a software update installation procedure to provide optimization to the Harman Gen 3 Audio and Navigation head units utilized in the models as listed."
09-120-242024-08-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "This bulletin announces availability of new reprograming files for the Engine Control Module (ECM) developed to remedy the following DTCs: P0016, P0017, P0018, P0019, P0087."
SubaruNet Announcement2024-07-01. Other. ELECTRICAL SYSTEM. This information announces reprograming file availability for Gen 4.5 Denso CP1.5 Audio and Navigation systems. Inprovement for CarPlay concerns with hands-free calls when the receiving party is not able to hear the caller.
07-221-23R2024-07-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces the repair procedures when corrosion is encountered within the instrument panel wiring harness and the rear wiring harness connectors.
09-115-242024-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs); P0137 (O2 Sensor Circuit Low Voltage Bank 1 Sensor 2, P0138 (O2 Sensor Circuit High Voltage Bank 1 Sensor 2) P0140 (O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2), and P0141 (O2 Sensor Heater Circuit Bank 1 Sensor 2).
09-122-242024-06-04. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; ENGINE. This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection.
16-112-18R2024-06-04. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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.
FAQ 15-317-24R2024-05-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. T16 Warranty Extension (15-317-24R) Frequently Asked Questions.
15-317-24R2024-05-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the Data Communication Module (DCM) Warranty from 3 years (36 months) of 36,000 miles to 8 years (96 months) or 100,000 miles, whichever comes first.
15-312-23R2024-04-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces repair procedures to be used when diagnosing dark current draw (parasitic draw) on vehicles equipped with Gen 1 Data Control Modules.
15-321-23R2024-04-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides a repair procedure when diagnosing dark current draw on vehicles with GEN 1 Data Control Modules.
15-317-24R2024-04-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Subaru has extended the Data Communication Module (DCM) warranty from 3 years 36,000mi to 8 years or 100,000mi. In rare cases, customers may experience a dead battery as a result of the DCM continually trying to access the 3G network.
Subaru notice to2024-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This letter provides information regarding the warranty extension for the Telematics Data Communications Module (DCM).
SubaruNet Announ2024-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This announcement provides information in regard to the extension of the basic new car limited warranty for the Telematics Data Communication Module (DCM). This coverage will apply to the vehicles listed for vehicles sold or leased in the United States.
15-317-242024-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Subaru of America, Inc. (Subaru) is extending the Data Communication Module (DCM) warranty from three years (36 months or 36K miles) to eight years (96 months or 100K miles), whichever comes first. This extension is in light of the rare cases of dead batteries experienced by customers.
15-316-242024-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides procedures required for reprogramming the Data Communication Module (DCM) in Gen 1 Subaru vehicles due to sunsetting of the 3G network.
18-232-232023-12-05. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin announces the revised break-in procedure for the A/C compressor.
15-211-17R2023-12-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the Harman Gen 3 Audio and Navigation head units utilized in the models as listed.
18-231-232023-10-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE. This Bulletin announces additional information regarding error codes 1403- 1407 encountered when attempting an adjustment/calibration of the EyeSight® system after body repair procedures have been performed.
07-221-232023-09-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces the repair procedures when corrosion is encountered within the instrument panel wiring harness and the rear wiring harness connectors.
16-112-18R2023-09-05. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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.
01-168-09R2023-09-05. Service bulletin. LATCHES/LOCKS/LINKAGES; EQUIPMENT; ELECTRICAL SYSTEM. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
15-285-21R2023-08-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
15-240-19R2023-07-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing customer concerns.

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