PSI MAXIMUM)

Pressurizing Container:
Hexagon-shaped joint must
be screwed into body of
spray gun.

Adjusting of Spray Gun:
A: Zero-point Setting of Discharge Knob and Air Needle

B: Adjustment of Wax Amount and Air Volume

Zero-point Setting of Discharge Knob
a) Fully close by rotating
the knob clockwise.

Discharge Knob

b) Mark the screw at
stop (zero) point.

Discharge Knob

Opening state
from full-close:
Summer: 3/4 turn
Winter: 4 turns

Air Needle

Closing state
from full-open:
All seasons:
1 full turn

Zero-point Mark
Zero-point Setting of Air Needle

a) Fully open by rotating the
needle counter-clockwise.

b) Mark the screw at
stopped (zero) point.
Compressor Air
Pressure

Remarks
Air Needle

Zero-point Mark

Summer: 51 PSI
Winter: 71 PSI
Never Exceed
71 PSI
The adjustments above are required as wax temperatures
will change between summer and winter. Additional
pressure adjustments may be needed to achieve the
required results.

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 5

WQQ-52 SERVICE PROCEDURE FLOW CHART
[Step 1]
Brake Fluid Leakage Inspection #1:
Visual Check

No Brake Fluid Leakage Verified

Brake Fluid Leakage Verified

[Step 2]
Brake Fluid Leakage Inspection #2:
With Brake Pedal Depressed

No Brake Fluid Leakage Verified

[Step 3]
Application of Rust-proofing

Brake Fluid Leakage Verified

[Step 4]
Brake Piping Replacement

[Step 5]
Application of Rust-proofing as
per procedure specified in
WQK-47R, pgs. 25-28

Complete

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Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 6

[Step 1] BRAKE FLUID LEAKAGE INSPECTON 1: VISUAL CHECK
(1) Preparation:
(1-1) Raise the vehicle on a lift.

(1-2) Open inspection hole door on fuel tank cover
(Photo 1). located on the right-hand side of the
vehicle.
Photo 1

(2) Locate affected Brake Pipes
Brake Pipe Portion “E”

(2-1) Confirm the location of Brake Pipe Portion E
at 2-2 Way Connector (Photo 2).
2-2 Way Connector

Photo 2

IMPORTANT: Even if the 2-2 Way Connector appears to have been previously rustproofed, the balance of this recall procedure must still be completed in its entirety.
NOTE: Removal of the plastic fuel tank protector is not required to perform this recall
procedure. The protector was removed to provide a better photographic representation of
the areas involved.
(3) Mud and Dust Removal:
IMPORTANT: If the brake pipe area is wet due to rain or snow, blow dry with
compressed air prior to starting the process.
(3-1) Use a tooth brush (plastic bristle) and
compressed air to carefully remove dust and dirt
(Photo 3).
IMPORTANT: NEVER use a metal / wire brush!
Photo 3

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Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 7

(4) Visual Check:

(4-1) Check for fluid leakage from Brake Pipe
Portion E from the areas indicated (Photo 4).
Photo 4

(5) Determination of Required Repairs:
(5-1) If no brake fluid leakage is verified: Proceed to [Step 2] BRAKE FLUID
LEAKAGE INSPECTION #2 WITH BRAKE PEDAL DEPRESSED.
(5-2) If brake fluid leakage is verified: Proceed to [Step 4] BRAKE PIPING
REPLACEMENT.
IMPORTANT: The decision to replace brake piping should strictly be made ONLY when
brake fluid leakage is verified. Replacement of brake piping due to other reasons including
surface rust are not a matter for warranty. Questions related to any out of warranty concerns
should be directed to your DPSM.
[Step 2] BRAKE FLUID LEAKAGE INSPECTION #2 WITH BRAKE PEDAL
DEPRESSED
(1) Preparation:
(1-1) Lower the vehicle.
(2) Depressing Brake Pedal Procedure:
(2-1) Start the engine and allow it to idle.
(2-2) Measure dimension “L2” (foot off
pedal) as shown in Drawing 2.
(2-3) Depress the brake pedal until the
dimension from steering wheel to
brake pedal “L1” becomes 110mm
greater than dimension “L2”.
(2-4) Hold the brake pedal in that
position for about 3 seconds.
(2-5) Shut off the engine.
(2-6) Raise the vehicle.

Drawing 2

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 8

(3) Visual Check:

(3-1) Check for fluid leakage from Brake Pipe
Portion E from the areas indicated (Photo 5).
Photo 5

(4) Determination of Required Repairs:
(4-1) If no brake fluid leakage is verified, Proceed to [Step 3] APPLICATION of
RUST-PROOFING.
(4-2) If brake fluid leakage is verified: Proceed to [Step 4] BRAKE PIPING
REPLACEMENT.
IMPORTANT: The decision to replace brake piping should be made ONLY when brake
fluid leakage is verified. Replacement of brake piping due to other reasons including surface
rust is not a matter for warranty. Questions related to any out of warranty concerns should
be directed to your DPSM.

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 9

[Step 3] APPLICATION OF RUST-PROOFING
IMPORTANT:
• Always wear safety goggles and a particle mask.
• Keep away from open flame.
(1) Preparation:
REMINDER: Never exceed 71 PSI air pressure
to the spray gun.
(1-1) A
ssemble the spray gun and nozzle
according to the spray gun assembly and
adjusting instructions outlined above.
(1-2) S
et zero-point of discharge knob and air
needle of spray gun.

Regulator NOT included

(1-3) Fill the tank with anti-rust wax.
(1-4) A
djust wax amount and air volume by setting the discharge knob, air needle,
and compressor air pressure of spray gun.
(1-5) Test-spray wax to confirm gun operates as intended.
IMPORTANT: Application of wax should always be at room temperature as wax
will not be spread effectively in cold temperatures.
(2) Application of Anti-Rust Wax:
Spray the anti-rust wax material onto each area as described using the suggested spraying
time and amount listed: Spraying time: 3 seconds or more on each area.
(2-1) Spraying Brake Pipe Portion E:
(2-1-1) O
pen the inspection hole door in
the fuel tank cover and insert the
nozzle. (Photo 6)
Nozzle

Photo 6

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 10

2-2 Way Connector

(2-1-2) I nsert the nozzle over the left-lower pipe
of the 2-2 Way Connector. Remove the
nozzle while spraying for 3 seconds or
more. (Photo 7)

Nozzle
Left-lower pipe

Photo 7

2-2 Way Connector

(2-1-3) I nsert the nozzle over the left-upper pipe
of the 2-2 Way Connector. Remove the
nozzle while spraying for 3 seconds or
more. (Photo 8)

Nozzle
Left-upper pipe

Nozzle

Photo 8

Right-upper pipe

(2-1-4) I nsert the nozzle over the right-upper pipe
of the 2-2 Way Connector. Remove the
nozzle while spraying for 3 seconds or
more. (Photo 9)
2-2 Way Connector

Nozzle

Photo 9

Right-lower pipe

(2-1-5) I nsert the nozzle over the right-lower pipe
of the 2-2 Way Connector. Remove the
nozzle while spraying for 3 seconds or
more. (Photo 10)
2-2 Way Connector

Photo 10

IMPORTANT:
•

Spray until the sprayed wax material
drips. (Photo 11)

•

To insure the proper amount of wax is
applied, follow the steps listed above
closely.

Photo 11

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 11

(3) Close inspection hole door and lower the vehicle.
[Step 4] BRAKE PIPING REPLACEMENT (ONLY after confirming fluid leakage)
Replace applicable PIPE ASSY CTR BK, and / or PIPE ASSY R with new parts using the
applicable part numbers listed in the Parts catalog and following the procedure outlined in the
applicable Service Manual. The 2-2 Way Connector can be resued.
IMPORTANT: After installation of any replacement brake piping is complete, the antirust wax material must be applied to any new components to complete the repair. Follow
the procedures listed in Campaign WQK-47R, pgs. 25-28 for application of anti-rust wax
material to any new brake piping.

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 12

RECALL IDENTIFICATION LABEL
Type or print the necessary information on a Service Program 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. Ordering qty 1 = 1 sheet of 20 labels.
PART NUMBER

APPLICABILITY

DESCRIPTION

ORDER QUANTITY

MSA6P1302

All models

Campaign Completion Labels
(contains one sheet of 20 labels)

1

WQQ-52

CLAIM REIMBURSEMENT AND ENTRY PROCEDURES
Credit to perform this recall will be based on the submission of properly completed repair order
information. Retailers may submit claims through Subarunet.com.
Listed below is claim entry information:
CLAIM
TYPE
RC

CAMPAIGN
CODE

APPLICABILITY

LABOR

WQQ-52

Impreza, WRX, STI,
and Forester

B153-540
C153-544

LABOR
TIME

DESCRIPTION
Apply anti-corrosion material to the
four-way joint connector
Brake Pipe Replacement

0.2
5.8

PART NUMBER

APPLICABILITY

DESCRIPTION

QUANTITY

SOA868V9355

All models

Nox-Rust® R576-108

1

If brake piping replacement is necessary, please refer to the parts catalog for the applicable
part numbers.

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 13

OWNER NOTIFICATION LETTER (FORESTER, IMPREZA, WRX AND STI)
IMPORTANT SAFETY RECALL
This notice applies to the VIN identified in the
address section printed below.

Subaru of America, Inc
Subaru Plaza
PO Box 6000
Cherry Hill, NJ 08034-6000
800-782-2783
www.subaru.com

Subaru Recall Campaign WQQ-52
NHTSA Recall No. 14V-830
January 2015

Dear Subaru Owner:
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act.
SUBARU OF AMERICA, INC. has decided that a defect, which relates to motor vehicle safety, exists in some 20092013 Subaru Forester models, some 2008-2011 model year Subaru Impreza, WRX, and STI vehicles, and in some
2012-2014 model year Subaru Impreza WRX and STI vehicles currently or formerly registered in at least one of the
following states and the District of Columbia.
Connecticut
Delaware
District of Columbia
Illinois
Indiana
Iowa

Maine
Maryland
Massachusetts
Michigan
Minnesota
Missouri

New Hampshire
New Jersey
New York
Ohio
Pennsylvania
Rhode Island

Vermont
West Virginia
Wisconsin

IMPORTANT
In July, 2014 you were notified of a recall related to your vehicle’s brake lines
(NHTSA Recall Number 14V-311).
Our records indicate that you already had that recall repair performed. However, due to incomplete repair
instructions provided to our retailers (dealers), your vehicle may not have been treated with the proper amount
of anti-corrosion material.

Additional anti-corrosion material needs to be applied to ensure your vehicle is treated
as intended.
We sincerely apologize for any inconvenience this matter may cause and urge you to schedule an appointment
as soon as possible to have this repair performed.
DESCRIPTION OF THE SAFETY DEFECT
Subaru has determined that your vehicle may have been manufactured with brake lines that could, over time, corrode
if exposed to salt, such as salt used to treat roads in the winter time.
Depending on driving conditions, salt water could splash on the brake lines through a gap in the fuel tank protector,
resulting in excessive corrosion of the lines. Excessive corrosion could eventually cause perforation of a brake
line(s) resulting in a brake fluid leak.

Continued...
Product Campaign Bulletin: WQQ-52R; Revised: 05/06/25

Page 14

DESCRIPTION OF THE SAFETY HAZARD
Your vehicle has a dual circuit braking system. Each circuit works independently and diagonally across the vehicle.
If one circuit of the brake system fails, the other half of the system still works. Should a brake line corrode to the
point of developing a perforation, brake fluid will leak from the line(s) causing the related circuit to eventually lose
effectiveness. In this situation, there would be an increase in the amount of brake pedal travel distance and foot
pressure required to slow or stop the vehicle. This might cause the driver to misjudge the amount of brake pedal
travel required to achieve the desired stopping distance, increasing the risk of a crash.
REPAIR
Subaru will inspect and test the current condition of the four-way connector area of your vehicle’s brake lines. If it is
found to be acceptable, anti-corrosion material will be applied to that area as a preventative measure. If it is found to
be unacceptable, the brake lines will be replaced and anti-corrosion material will be applied to the new lines. These
repairs will be performed at no cost to you.
WHAT YOU SHOULD DO
You should contact your Subaru retailer (dealer) immediately for an appointment to have this repair performed.
There are several important precautions you should take until this repair has been performed:
•

If you experience the condition described above while braking, continue to apply steady pressure on the
brake pedal until the vehicle comes to a stop. Immediately contact your Subaru retailer for assistance.

•

If you notice fluid leaking from the vehicle, do not operate the vehicle. Immediately contact your Subaru
retailer for assistance.

•

If the brake system warning light remains illuminated on the instrument panel with the parking brake fully
released, do not operate the vehicle. Immediately contact your Subaru retailer for assistance.

•