05-85-21R

ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
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CLAIMS PERSONNEL
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
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© 2021 Subaru of America, Inc. All rights reserved.
SERVICE INFORMATION BULLETIN
APPLICABILITY:
		
		
		
		
SUBJECT:
2015-21MY Legacy and Outback
2017-21MY Impreza
2019-21MY Forester
2018-21MY Crosstrek
2019-21MY Ascent
NUMBER: 05-85-21R
DATE:
04/27/21
REVISED:
04/27/21
TPMS Valve Stem Assembly- Design Change
INTRODUCTION:
This Service Information Bulletin announces a design change made to the Tire Pressure Monitoring
System (TPMS) valve assemblies as listed below. The new parts have been developed with enhanced
resistance to moisture. Moisture penetration may damage the sensor and cause the TPMS warning
light to illuminate.
PRODUCTION CHANGE INFORMATION:
The new TPMS valve assemblies were incorporated into production per the table below. This TSB
will be revised with the additional starting VINs as they become available.
Model
Starting VIN
Legacy
TBD
Outback
TBD
Impreza
TBD
Forester
MH474541
Crosstrek
MH300482
Ascent
TBD
PART INFORMATION:
NOTE: These new TPMS sensors are serviced separately and DO NOT need to be replaced as a set.
The new TPMS valve assembly part numbers are as follows:
•
•
28103FL010 for SBR (Japan) -production vehicles
28103FL00C for SIA (USA) -production vehicles.
REMINDER: Always order the most up-to-date replacement parts based on the specific VIN
being repaired.
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.
Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is 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.
Continued...
Bulletin Number: 05-85-21; Date: 04/27/21
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SERVICE PROCEDURE / INFORMATION:
REMINDERS:
•
•
Customer satisfaction and retention starts with performing quality repairs.
Replace ONLY the failed TPMS sensor as they DO NOT need to be replaced as a set.
The service procedures for TPMS Valve Stem replacement and registration remain unchanged.
Always refer to STIS and review the full requirements of the repair being performed. The Service
Manual procedures contain information critical to performing an effective repair the first time, every
time. This includes but is not limited to important SAFETY precautions, proper inspection criteria,
necessary special tools, required processes and related one-time-use parts needed for a complete and
lasting repair.
IMPORTANT REMINDERS:
•
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.
•
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.
Bulletin Number: 05-85-21; Date: 04/27/21
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