Subarunet Announcement
To: All Subaru Retailers
From: Subaru of America, Inc.
Date: April 20, 2023
UPDATE Safety Recall/STOP SALE: WRI-23 Stop Lamp Switch Adjustment
Service, Parts, and Claim Instructions
Please refer to the service procedures included at the end of this message, to address in-stock stop sale
units and any other vehicles that are presented for service prior to bulletin availability and owner
notification. Coverage must be confirmed by using the Vehicle Coverage Inquiry function on
subarunet.com prior to repair.
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.
Remedy
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. The recall repair
procedure will be forthcoming in a subsequent subarunet announcement later this week.
Affected Vehicles
A total of 4,030 U.S. Subaru Impreza vehicles will be affected by this recall, as listed below:
Model Year
2023

Carline
Impreza

Production Date Range
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. This
information will be available today.

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:
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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
Retailers will be notified when the owner notification has been scheduled.
Service, Parts, and Claim Instructions
Please refer to the WRI-23 Product Campaign Bulletin on STIS for detailed information, which will be
available next week.
Below are the service procedures that will be included in the WRI-23 bulletin, so that in-stock stop sale
units and other vehicles presented for service prior to bulletin availability may be addressed:

SERVICE PROCEDURE / INFORMATION:

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

STOP LAMP SWITCH PLUNGER EXTENSION LENGTH INSPECTION PROCEDURE:
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.
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If the plunger extension length found is the specified value, then no further service procedures
are required. Reinstall the left front footwell air duct.

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If the plunger extension length found is not the specified value, an adjustment will be required.
Proceed to the adjustment section of this service procedure.

STOP LAMP SWITCH PLUNGER EXTENSION ADJUSTMENT PROCEDURE
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.
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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

SERVICE PROGRAM IDENTIFICATION LABEL:
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.

WRI-23

CLAIM REIMBURSEMENT AND ENTRY PROCEDURES:
Credit to perform this recall will be based on properly completed repair order information. Retailers may
submit claims through Subarunet.com.
NOTE: The 14-digit battery test code is required for battery replacement recall claim submission.
Labor Description
STOP LAMP SWITCH CLEARANCE CHECK
STOP LAMP SWITCH CLEARANCE ADJUSTMENT,
BATTERY CHECK
STOP LAMP SWITCH CLEARANCE ADUSTMENT,
BATTERY CHECK & CHARGE (NO BATTERY
REPLACEMENT)
ADDITIONAL CHARGING*
STOP LAMP SWITCH CLEARANCE ADJUSTMENT &
BATTERY REPLACEMENT
STOP LAMP SWITCH CLEARANCE ADJUSTMENT,
BATTERY CHARGE & REPLACEMENT
ADDITIONAL CHARGING*

Labor Operation #
A166-351

Labor Time
0.2

A166-352

0.3

B166-353

0.4

C166-444

0.2

A166-354

0.6

B166-355

0.7

C166-444

0.2

Fail Code

WRI-23

* Can be claimed if charging exceeds one hour and additionally for each subsequent hour of charging
necessary to achieve a complete charge.
IMPORTANT REMINDERS:
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SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.

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Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
Always refer to STIS for the latest service information before performing any repairs.