Service bulletin SB-WQS-54

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10059181
Published by NHTSA	2016-02-13
Manufacturer's number	SB-WQS-54
Manufacturer's date	2015-06-30
NHTSA component	EQUIPMENT; EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH; EQUIPMENT:ELECTRICAL

NHTSA's summary

SUBARU: TSB CONTAINS AN OWNER'S NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. IN CERTAIN VEHICLES THERE IS A DELAYED IN DETECTING A FAILURE OF BRAKE LAMP SWITCH (BLS) BY DRIVER ASSIST SYSTEM AND TAKES LONGER FOR VEHICLE DYNAMIC CONTROL (VDC) TO RECEIVE REQUEST, RESULTING IN NO AUTOMATIC BRAKING. MODEL 2015 LEGACY, OUTBACK, IMPREZA, XV CROSSTREK, 2016 WRX. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Equipment and accessories, Lighting, Brake lights

Vehicles listed
SUBARU IMPREZA	2015
SUBARU LEGACY	2015
SUBARU OUTBACK	2015
SUBARU WRX	2016
SUBARU XV CROSSTREK	2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V149000	2019-02-28. EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH
15V366000	2015-06-12. FORWARD COLLISION AVOIDANCE: CRASH IMMINENT BRAKING; EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
WUE-90 tool	2019-08-06. Service bulletin. SOA has received multiple requests for additional 83399Fj000rt BRAKE LIGHT SWITCH tools and now has sufficient stock to allow retailers to place orders for single tools.
WUE-90	2019-05-28. Service bulletin. Subaru of America, Inc. (Subaru) is recalling certain Crosstrek, Forester, Impreza, and WRX vehicles to replace the brake lamp switch. A total of 1,303,530 U.S. vehicles will be affected by this recall.
WUE-90R	2019-05-20. Service bulletin. Subaru of America, Inc. (Subaru) is recalling certain Crosstrek, Forester, Impreza, and WRX vehicles to replace the brake lamp switch. A total of 1,303,530 U.S. vehicles will be affected by this recall.
07-128-18R	2018-11-05. Service bulletin. This Service Information bulletin provides a measurement and adjustment procedure for the stop lamp switch. An improperly adjusted (or faulty) stop lamp switch can cause any of the DTCs listed above to set and result in the related system?s warning lamp to illuminate.
06-55-16R	2018-04-02. Service bulletin. EXCLUDES HYBRID MODELS. This bulletin announces a design change to the brake light switch (BLS) to reduce the possibility of improper illumination of the ABS and/or VDC warning lamp. In the event a product containing silicone is used to lubricate the BLS or for other purposes in the area around the switch, a non-conductive coating may develop over time on the internal electrical contacts and affect operation of the switch. On / Off signal output from the BLS is critical for proper operation of various systems on the vehicle. When the switch does not operate properly, warning lamps illuminate and DTCs are stored. A table with BLS-related DTCs and additional information is provided in the Service Procedure information. A photo of the switch changes is shown below. This bulletin also provides a diagnostic and adjustment procedure to be used when diagnosing brake light switch-related DTCs.
07-131-18	2018-03-13. Service bulletin. This bulletin provides a measurement and adjustment procedure for the stop lamp switch. An improperly adjusted (or faulty) stop lamp switch can cause any of the DTCs listed above to set and result in the related system?s (e. g. VDC and/or EyeSight) warning lamp to illuminate.
06-55-16R	2017-09-14. Service bulletin. This bulletin announces a design change to the brake light switch (BLS) to reduce the possibility of improper illumination of the ABS and/or VDC warning lamp. In the event a product containing silicone is used to lubricate the BLS or for other purposes in the area around the switch, a non-conductive coating may develop over time on the internal electrical contacts and affect operation of the switch. On / Off signal output from the BLS is critical for proper operation of various systems on the vehicle. When the switch does not operate properly, warning lamps illuminate and DTCs are stored. A table with BLS-related DTCs and additional information is provided in the Service Procedure information. A photo of the switch changes is shown below. This bulletin also provides a diagnostic and adjustment procedure to be used when diagnosing brake light switch-related DTCs.
06-46-14R	2017-03-03. Service bulletin. THIS BULLETIN PROVIDES A REVISED ADJUSTMENT PROCEDURE TO BE USED WHEN DIAGNOSING BRAKE LIGHT SWITCH (BLS) -RELATED DTCS C1531 AND/OR C0054. IF THE BLS IS OUT OF ADJUSTMENT, THE ABS AND/OR VDC WARNING LAMP MAY ILLUMINATE.
06-46-14	2016-11-21. Service bulletin. REVISED BRAKE LIGHT SWITCH ADJUSTMENT PROCEDURE FOR DTCS C1531 AND C0054