WRI-23 Stop Lamp Switch Adjustment – 2023 Subaru Impreza

April 25, 2023 NHTSA CAMPAIGN NUMBER: 23V292000

Brake Light Switch Malfunction/FMVSS 108 & 102

An unintentional brake light illumination can fail to alert other motorists of actual brake application. A vehicle that shifts out of the park position unexpectedly can allow the vehicle to rollaway. Either of these scenarios can increase the risk of a crash.


NHTSA Campaign Number: 23V292

Manufacturer Subaru of America, Inc.


Potential Number of Units Affected 4,030



Subaru of America, Inc. (Subaru) is recalling certain 2023 Impreza vehicles. The brake light switch may be improperly adjusted and illuminate the brake lights without application of the brake pedal. The vehicle may also allow drivers to start and shift the transmission out of the PARK position without pressing the brake pedal. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 108, “Lamps, Reflective Devices, and Associated Equipment” and 102, “Trans Shift Lever Seq/Starter Interlock/Trans Braking Effect.”



Dealers will inspect the gap between the brake light switch and stopper, adjusting the switch as necessary, free of charge. Owner notification letters are expected to be mailed June 23, 2023. Owners may contact Subaru’s customer service at 1-844-373-6614. Subaru’s number for this recall is WRI-23.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.


Check if your Subaru has a Recall



SUBJECT: Safety Recall/STOP SALE – Stop Lamp Switch Adjustment


Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Impreza vehicles that may contain a stop lamp switch that was improperly adjusted during assembly.


Description of the Defect and Safety Risk

During the manufacturing of the brake pedal assembly, the brake lamp switch may not have been appropriately adjusted to allow the specified gap between the switch and the stopper. This potential condition may cause the brake lamps to illuminate without application of the brake pedal.

Brake lamp illumination without driver input may confuse other drivers, increasing the risk of a crash.



For all potentially affected vehicles, Subaru retailers will inspect the gap between the stop lamp switch and the stopper, and if necessary, adjust the switch to allow for the proper gap. If it is necessary to adjust the switch, Subaru retailers will check, and if necessary, charge or replace the 12V battery in the vehicle. Please refer to the service procedures contained within this bulletin for detailed information.


Affected Vehicles

A total of 4,030 U.S. Subaru Impreza vehicles will be affected by this recall, as listed below:

Model Year Carline Production Date Range
2023 Impreza February 1, 2023 – March 20, 2023

Not all vehicles in the production date range listed above are affected by this recall. Coverage must be confirmed by using the Vehicle Coverage Inquiry function on subarunet.com prior to repair.


Retailer Responsibility

Please be advised that it is a violation of Federal law for a dealer to deliver a new motor vehicle covered by a recall under a sale or lease until the defect is remedied. Therefore, any Authorized Subaru Retailer failing to perform the applicable service procedures to correct all affected vehicles in their inventory prior to the vehicle being placed in service may be subject to civil penalties of up to $26,315 per violation (i.e., for each vehicle), as provided in 49 CFR §578.6 and will also be in breach of the Subaru Dealer Agreement.

Any vehicles listed in any recall/campaign that are in retailer stock must be:

  • Immediately identified
  • Tagged or otherwise marked to prevent their delivery or use prior to repair
  • Repaired in accordance with the repair procedures outlined in the Product Campaign Bulletin

Retailers are to promptly perform the applicable service procedures, to correct all affected vehicles in their inventory (used, demo & SSLP). Whenever a vehicle subject to this recall is taken into retailer inventory necessary steps should be taken to ensure the recall correction has been made before selling or releasing the vehicle.


Owner Notification

Owners will be notified by first class mail in May. Retailers will be notified when the owner notification has been scheduled.




  • Inspection: Feeler Gauge
  • Adjustment: Measuring tape (at least 36 inches long)
  • Adjustment: Non-marking Painter’s tape
  • Adjustment: Sharp-tipped marker




STEP 1: Remove the left front footwell air duct.


STEP 2: Using a feeler gauge, check the switch plunger extension length between the stop lamp switch threads and the stopper section of the brake pedal.

The plunger portion of the switch should extend between the stopper section of the brake pedal and the stop lamp switch threads 1.5mm (0.06 in) in length.

  • If the plunger extension length found is the specified value, then no further service procedures are required. Reinstall the left front footwell air duct.
  • If the plunger extension length found is not the specified value, an adjustment will be required.

Proceed to the adjustment section of this bulletin located on page #4.




STEP 1: Adjust the steering column to the lowest point and the telescopic position closest fully inward toward the instrument panel. Slightly turn the steering wheel to the right until it is locked.


STEP 2: Refer to the applicable Service Manual and review: General Description > Repair Contents > Action required before & after Battery Disconnect. CAREFULLEY disconnect the negative battery cable from the battery sensor.


STEP 3: Apply non-marking painter’s tape to the bottom of the steering wheel to be used for making a reference mark.

NOTE: If needed and to maintain consistency, apply a piece of tape to the brake pedal to be used as a reference mark when making measurements. The end of the measuring tape can also be taped to the pedal itself.


STEP 4: Write a reference mark on the taped section of the steering wheel. Make a measurement to the brake pedal in its current position and record it.


STEP 5: Press the brake pedal until the stop lights come on (a second person or the SSM4 with the stop lamp switch PID selected) then measure again to determine the extension of the switch.


STEP 6: Loosen lock nut A. Turn lock nut B to adjust the stop lamp switch plunger extension. Turning lock nut B by 90 degrees will adjust the extension length approximately 0.15mm. Once the desired length is achieved, tighten lock nut A to 8nm (0.8 kgf-m, 5.9 ftlbs).

IMPORTANT: Never adjust the pedal stroke to less than 3mm. Doing so may cause the stop lamp to illuminate without pressing the brake pedal.


STEP 7: Reinstall the left front footwell air duct.


STEP 8: Reconnect the ground cable terminal to the battery sensor, torque to 11nm (8.1ft.-lbs. or 97.2inch-lbs.) while supporting the sensor with the other hand as outlined in the applicable Service Manual under: STARTING/CHARGING SYSTSEMS > Battery Sensor.


STEP 9: Connect the DCA-8000 to the vehicle battery. Perform an In-Vehicle Charge and Test. Patiently wait for the battery test results. Further testing information can be found in TSB 07-178-21R.

  • Good Battery – The battery is good. No further action is required.
  • Good Recharge – The battery is good but also discharged. Use the DCA-8000 to charge the battery. The battery MUST be fully charged before returning the vehicle to the customer.
  • Charge & Retest – The battery condition is discharged and should be charged for a decisive evaluation. Continue charging the battery using the DCA-8000 and await the final decision.
  • Replace Battery – The battery is faulty. Record the 14-digit test code and replace the battery following the work procedures outlined in the applicable Service Manual. Refer to STIS: Engine > STARING/CHARGING SYSTEMS > Battery
  • Bad-Cell – The battery is faulty. Record the 14-digit test code and replace the battery following the work procedures outlined in the applicable Service Manual. Refer to STIS: Engine > STARING/CHARGING SYSTEMS > Battery



Type or print the necessary information on a Campaign Identification Label. The completed label should be attached to the vehicle’s upper radiator support. Additional labels are available through normal parts ordering channels. The part number is MSA6P1302, which comes as one sheet of 20 labels.


Chronology :

February 17, 2023 – Subaru received a technical report indicating a vehicle was experiencing the brake light illuminating without brake pedal application. Subaru opened an investigation.

March-April 2023 – The results of the investigation indicated that that the stop lamp switch had been improperly adjusted during the assembly process.

April 18, 2023 – Subaru decided to conduct a non-compliance recall.  Subaru is aware of 4 technical reports and 1 warranty claim in the U.S. market between February 17, 2023 and April 18, 2023. Subaru is not aware of any crashes or injuries resulting from this non-compliance.


1 Affected Product




6 Associated Documents

Noncompliance Notice 573 Report

RCLRPT-23V292-2617.PDF 218.371KB



Recall Acknowledgement

RCAK-23V292-1148.pdf 645.986KB



Subaru – Stop Sale WRI23 Subarunet Announcement – April 2023

RCMN-23V292-6749.pdf 182.609KB



Recall 573 Report – April 28, 2023

RCLRPT-23V292-1397.PDF 218.51KB



Subaru – Stop Sale WRI23 Subarunet Announcement – April 2023

RCMN-23V292-3342.pdf 538.422KB



Remedy Instructions and TSB

RCRIT-23V292-9038.pdf 916.591KB



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