ATTENTION:
GENERAL MANAGER
PARTS MANAGER
CLAIMS PERSONNEL
SERVICE MANAGER

IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

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q
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SERVICE BULLETIN
APPLICABILITY:

2013MY BRZ

NUMBER:

06-44-12

DATE:

10/22/12

SUBJECT: Diagnosis of DTC C1249
Brake Light Switch Malfunction
INTRODUCTION

This bulletin provides an additional diagnostic procedure to be used when diagnosing DTC C1249,
Brake Light Switch (BLS) malfunction. The Service Manual will be revised to include this
diagnostic procedure in the future.
SERVICE PROCEDURE / INFORMATION
IMPORTANT: The customer should be made aware that if the accelerator and the brake pedals
are operated at the same time, C1249 may set. If this driving tendency applies, DTC C1249 may
reset until the customer’s driving habits are changed. Confirm the customer fully understands this
information before proceeding further with any diagnostics.
Other possible causes are a faulty or improperly adjusted brake light switch.

•

Illustration shows the brake light switch and “Gap A” dimension which is
explained below.
Retainer

Brake Pedal

Adjustment Notches

Continued...
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles, or
to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how
to do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Bulletin Number: 06-44-12; Date: 10/22/12

SUBARU OF AMERICA, INC. IS
“ISO 14001 COMPLIANT”
The international standard for excellence
in Environmental Management Systems.
Please recycle or dispose of automotive
products in a manner that is friendly to our
environment and in accordance with all
local, state and federal laws and regulations.

Page 1

•

Connect the Select Monitor (SSMIII). While monitoring the Current Data Display,
check and record the master cylinder pressures when:
1) There is no brake pedal pressure being applied.
2) T
he brake light switch status changes from “off” to “on” while pressing on the
brake pedal.

When the brake light switch status turns from “off” to “on”, master cylinder pressure should
be between 0.08 to 0.27 MPa (11.6 to 39.2 psi).
•

If the pressure measured is exceeds .3MPa (43.5psi) as indicated on the SSMIII,
increase the “Gap A” dimension by 1 mm. Before adjusting the brake light switch,
add a mark to reference it to the retainer as shown in the photos on page 3. This
will help make the adjustment process easier. CAREFULLY rotate the brake light
switch SLOWLY, counter-clockwise approximately 1/4 turn until you feel it begin to
release from the retainer. Before it releases completely, move it one “notch” outward
toward the steering wheel. Turn it back to the right (clockwise) until you feel it snap
back into the “locked” position. You will need to develop a “feel” for the adjustment
notches along with how the brake light switch releases and locks back into place. This
may involve some trial and error. One notch is equivalent to 1mm of adjustment. If
the brake light switch releases completely, insert it back into the retainer until your
reference mark is in the original position then try again.

•

Once you have increased “Gap A” 1mm as shown in the reference photos on page 3,
repeat the pressure measurement.

•

If the brake pressure is still out of the specified range and C1249 resets, continue
diagnosis following the procedures found in the applicable Service Manual.

Continued...
Bulletin Number: 06-44-12; Date: 10/22/12

Page 2

“BEFORE” AND “AFTER” REFERENCE PHOTOS

Reference
mark

Reference
mark
Gap “A”

Retainer

Retainer

Before adjustment

After adjustment, “Gap A” increased by 1mm

WARRANTY / CLAIM INFORMATION
For vehicles within the Basic New Car Limited Warranty period, refer to the Subaru Warranty
Wizard® for claim submission information.

Bulletin Number: 06-44-12; Date: 10/22/12

Page 3