Service bulletins for the 2018 Subaru Legacy
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.
445 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 15-221-18R | 2019-07-01. Service bulletin. EQUIPMENT. This bulletin provides helpful information about operating conditions observed in the field for Technicians to use when diagnosing customer concerns which may arise while operating Harman Gen 3.0 and 3.1 Navigation and Display Audio systems. We will continue to add to this bulletin as more information becomes available. |
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| 15-217-18R | 2019-07-01. Service bulletin. EQUIPMENT. IMPORTANT: This Service Bulletin has been as been replaced by TSB 15-240-19R entitled ?New Harman Audio Amplifiers?. Please refer to this new bulletin for the latest information regarding this condition. |
| 15-240-19R | 2019-07-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing the following customer concerns: Symptom 1: No audio output is heard but, the volume level displayed changes when turning the knob Symptom 2: Audio volume increases to maximum intermittently without turning the knob Symptom 3: A buzzing, screeching or crackling-type sound is heard coming through the speakers Symptom 4: Loss of audio output after turning the head unit off and back on again in a short amount of time Symptom 5: Audio volume is temporarily louder than expected after ending a Bluetooth call while using navigation guidance Symptom 6: No response from the volume control knob. |
| 07-153-19 | 2019-07-01. Service bulletin. ELECTRICAL SYSTEM. This service bulletin announces availability of the cap portion (a.k.a. spark plug boot) as a service part separate from the complete ignition coil assembly. If the cap portion as shown in the illustrations below is damaged during removal or replacement, it is no longer necessary to replace the complete ignition coil assembly. |
| 14-22-16R | 2019-07-01. Service bulletin. EQUIPMENT. 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. |
| 12-253-18R | 2019-05-28. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; SEATS; EQUIPMENT. This bulletin provides a procedure to help identify the source of a squeaking, creaking or popping -type sound heard coming from the driver?s seat. A change has been made to the Teflon bushings used in the seat cushion frame assembly. |
| 06-70-19 | 2019-05-28. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This bulletin announces a change to the operating software included in the Vehicle Dynamic Control (VDC) Control Module and Hydraulic Unit (VDCCM&H/U) on the models listed above. This change is in response to a very small number of customer inquiries regarding the Hill Holder system?s indicator lamp blinking once along with a single tone (chirp)being heard when starting the engine using the key, push-button or with use of a remote engine start. |
| 15-228-18R | 2019-05-28. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin provides troubleshooting steps to follow when diagnosing a customer concern of the display screen being either frozen (unresponsive) or black (blank). |
| 15-204-16R | 2019-05-28. Service bulletin. EQUIPMENT; VISIBILITY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. Subaru of America, Inc. (Subaru) is recalling 2018 model year Legacy, Outback, and BRZ vehicles equipped with a certain combination of head unit hardware and software, due to the possibility of noncompliance with Federal Motor Vehicle Safety Standard (FMVSS) 111 ? ?Rear Visibility.? |
| WTZ-85R | 2019-05-28. Service bulletin. VISIBILITY; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. Subaru of America, Inc. (Subaru) is recalling 2018 model year Legacy, Outback, and BRZ vehicles equipped with a certain combination of head unit hardware and software, due to the possibility of noncompliance with Federal Motor Vehicle Safety Standard (FMVSS) 111 ? ?Rear Visibility.? |
| 15-238-19 | 2019-05-28. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Service Information bulletin is in response to a small number of customer concerns regarding the audio unit not being able to play certain types of audio Compact Discs (CDs). Harman Gen 3.0 head units which have previously received software updates (see claims history) and Gen 3.1 head units (used in 2019MY year vehicles) cannot play ?CD Extra? or ?Enhanced CD? -type audio CDs. |
| 15-229-18R | 2019-05-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This bulletin provides troubleshooting steps to follow when diagnosing clock-related customer concerns. Please start by completing the Harman Investigation Guide Questionnaire as it gathers important details which will help with diagnosis and will be required should the condition not be resolved by this troubleshooting. |
| 02-163-16R | 2019-05-28. 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. |
| 16-120-19 | 2019-05-28. Service bulletin. EQUIPMENT:MECHANICAL; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 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. |
| 02-170-17R | 2019-05-20. 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. |
| 15-240-19 | 2019-05-20. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing the following customer concerns: ? Loss of audio output after turning the head unit off and back on again in a short amount of time ? Audio volume is temporarily louder than expected after ending a Bluetooth call while using navigation guidance ? No response from the volume control knob. |
| 10-90-19 | 2019-03-25. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin announces a design change made to the HVAC control panels for the models listed above. The change will address customer concerns of the seat heater switches sticking in the ?pressed? position but not returning to ?flush? with the face of the control panel when released as shown in the photos below. A series of small air outlets (vents) has been added to the assembly to keep dust and dirt from accumulating and causing the switches to bind. |
| 02-178-18R | 2019-03-25. Service bulletin. EQUIPMENT. 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. |
| 16-111-18R | 2019-03-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN. This bulletin announces reprogramming file availability to optimize the Transmission Control Module (TCM) used with the TR580 CVT. Contamination in a fluid pressure solenoid valve can cause a DTC P0841. The new logic will allow the solenoid to operate in a manner enabling it to discharge the contamination. |
| 16-112-18R | 2019-03-25. 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. |
| WTZ-85R | 2019-03-25. Service bulletin. ELECTRICAL SYSTEM. Subaru of America, Inc. (Subaru) is recalling 2018 model year Legacy, Outback, and BRZ vehicles equipped with a certain combination of head unit hardware and software, due to the possibility of noncompliance with Federal Motor Vehicle Safety Standard (FMVSS) 111 ? ?Rear Visibility.? |
| 06-69-19R | 2019-03-25. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING. This bulletin announces a design change made to the rear ABS wheel speed sensor on the models listed above. The change involves the addition of an additional shielding cover to protect the harness from damage caused by road debris. |
| WUA-86R | 2019-03-25. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a service program to update the Harman Kardon head unit on certain vehicles with the latest version of software. |
| WTW-82R | 2019-03-25. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Subaru of America, Inc. (Subaru) is recalling all 2018 model year Legacy and Outback vehicles to reprogram the combination meter software to correct an error in the driving range indicator calculation in the multi-information display. A total of 228,648 U.S. vehicles will be affected by this recall. |
| 05-67-19 | 2019-03-11. Service bulletin. WHEELS; WHEELS:HUB. This bulletin announces a slight design change made to the sealing areas of the wheel hub assemblies for the models as listed above. The change was made to enhance productivity during the vehicle assembly process. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.