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Service bulletins for the 2004 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.

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

By type

By component

By trouble code

Bulletins, newest first
06-68-19R2019-08-06. Service bulletin. SERVICE BRAKES, HYDRAULIC. 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 brake pad installation procedures found in the related Service Manuals.
Subaru Tech Tips2019-07-01. Service bulletin. EQUIPMENT. Subaru Service and Technical Support Line Newletter.
14-22-16R2019-07-01. 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.
04-13-09R2019-02-19. Service bulletin. STEERING; STEERING:ELECTRIC POWER ASSIST SYSTEM. This post was revised in error. It has been corrected back and removed from the posting list. The message was corrected on 04-13-14R posting dated 11/14/2018.
03-82-182018-12-10. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. 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.
03-82-182018-12-10. 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.
03-70-12R2018-06-18. Service bulletin. POWER TRAIN; EQUIPMENT. This Bulletin provides production change, repair procedure and parts information to address a customer concern of a high-pitched sound coming from the transmission extension housing area. In cold temperatures, thermal contraction causes shrinking of the transmission case. In high temperatures, expansion of the case occurs. These temperature changes affect the amount of preload on the transfer driven shaft bearings. In some rare cases, when preload is very near the limit of specification combined with unusual driving conditions, this thermally-induced pre-load change may cause damage to the bearings and result in the sound heard by the customer. A change has been made to the extension case and a new ?Dish Plate? added. The machining depth of the extension case has been increased to accommodate the new dish plate. When used along with a selective thrust washer, the spring tension of the dish plate helps to maintain a consistent amount of pre-load on these bearings throughout varying temperature conditions.
04-13-09R2018-06-11. Service bulletin. EQUIPMENT; STEERING:HYDRAULIC POWER ASSIST:PUMP. If you encounter a vehicle that has a groaning type noise coming from the power steering pump when the wheel is turned to the full right or left position when the vehicle is parked, it may be caused by the relief valve vibrating within the pump. In lieu of replacing the power steering pump, the relief valve is now available as a replacement part.
WQR-53R2018-06-11. Service bulletin. AIR BAGS:FRONTAL. Recall Bulletin Revised. UPDATE ? April 2016: New and different inflators are available for affected 2004-2005 Impreza, WRX, and STI vehicles. As a result, there are different installation instructions depending on the inflator being installed. Please refer to the appropriate service procedure instructions and parts information which were updated to reflect the new parts.
01-168-09R2018-06-11. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Revised TSB. The Subaru Lock Information Site (SLIS) is located at http://lockinfo.subaru.com, and provides information on how to obtain immobilizer codes and key cut codes for Subaru vehicles from the 2000MY to present. This bulletin identifies the equipment required to initialize (reset) the immobilizer code and cut the key blanks, for both immobilizer and non-immobilizer type keys. Subaru of America began using immobilizer systems in some 2005MY vehicles (please refer to Immobilizer Chart for more detailed information).
02-172-18R2018-06-11. Service bulletin. ENGINE; EQUIPMENT. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
02-172-18R2018-06-11. Service bulletin. ENGINE. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
TKA-B-C2018-06-04. Service bulletin. EQUIPMENT; AIR BAGS. Subject: Takata Recall Expansion ? New Subaru Recall Campaigns TKA-16, TKB-16, TKC-16 covering all non-desiccated frontal Takata PSAN inflators. Each phase of the expansions will address the most at risk vehicles first and is divided into three geographic zones based on temperature fluctuations and humidity and the exposure time required under those environmental conditions to degrade the propellant to the point where it poses an unreasonable risk to safety.
WQR53-memo2018-06-04. Service bulletin. AIR BAGS. NHTSA announced in a press conference today, the planned expansion of the airbag inflator recall to an additional 35 to 40 million vehicles from various manufacturers nationwide. We are currently assessing which of our models may be covered. We hope to make that determination soon. When specific vehicles are identified, owners will be notified plus vehicle identification numbers (VINs) can be researched on Subaru.com or on the NHTSA web site Safercar.gov.
01-168-09R2018-04-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
01-168-09R2017-10-27. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
WQR532017-10-27. Service bulletin. AIR BAGS. Based on ballistic testing results, it has been determined that affected vehicles with registration history in high absolute humidity (HAH) areas are more susceptible to rupture. Owner notification letters were mailed to the owners of those vehicles on January 29, 2016. On Friday, February 12, 2016 initial owner notification letters will be mailed to the current owners of non?HAH vehicles. Non?HAH vehicles have not had any registration history in the high absolute humidity areas.
SM06 - WQL-482017-03-07. Service bulletin. AIR BAGS. SERVICE MEMO: WQL© 48 FRONT PASSENGER AIR BAG INFLATOR RECALL (NHTSA ID 14V© 399) ¨C SECOND MAILING
SM04 - TAKATA2017-03-07. Service bulletin. AIR BAGS. UPDATED STATEMENT ON TAKATA AIRBAGS POSTED ON SUBARU.COM
SM012017-03-07. Service bulletin. AIR BAGS. SERVICE ANNOUNCEMENT OF SUBARU RECALL CAMPAIGN: FRONT PASSENGER AIR BAG INFLATORS WQP-51
03-70-122017-03-06. Service bulletin. EQUIPMENT. REPAIR PROCEDURE FOR HIGH-PITCHED SOUND FROM EXTENSION HOUSING AREA USING LATEST GENERATION PRODUCTION PARTS
03-68-12R2017-03-06. Service bulletin. POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING. THIS BULLETIN REVIEWS A CHANGE TO THE PART NUMBERS USED FOR THE TRANSFER DRIVEN GEAR BEARINGS. THESE REVISED BEARINGS ARE TO BE USED TO ENHANCE DURABILITY.
PM022017-03-03. Service bulletin. AIR BAGS. PARTS MEMO: WQL48, WQM49 TAKATA FRONT PASSENGER AIR BAG INFLATOR RECALLS
PM012017-03-03. Service bulletin. AIR BAGS. PARTS REMINDER: RETURNS TO TAKATA FOR WQL48 AND WQM49 AIR BAG INFLATOR
WQR-53U2017-03-03. Service bulletin. AIR BAGS. UPDATE: OWNER NOTIFICATION SUBARU RECALL CAMPAIGN: FRONT PASSENGER AIR BAG INFLATORS WQR]53 OWNER NOTIFICATION LETTERS WERE MAILED SEPTEMBER 30, 2015 DESCRIPTION. ALL VEHICLES PREVIOUSLY AFFECTED BY THE WQL-48 RECALL THAT WERE NOT YET REPAIRED WILL BE TRANSFERRED INTO TO THE WQR-53 NATIONAL RECALL. ANY OPEN WQL-48 COVERAGE WILL BE EXPIRED ONCE OWNER NOTIFICATION BEGINS.

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