NHTSA ID Number: 10191664
Manufacturer Communication Number: 05-85-21R
Summary
This bulletin announces a design change made to the TPMS valve assemblies.
NUMBER: 05-85-21R
DATE: 04/27/21
REVISED: 04/27/21
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.
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.
29 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
SUBARU | ASCENT | 2019-2021 |
| SUBARU | CROSSTREK | 2018-2021 |
| SUBARU | FORESTER | 2019-2021 |
| SUBARU | IMPREZA | 2017-2021 |
| SUBARU | LEGACY | 2015-2021 |
| SUBARU | OUTBACK | 2015-2021 |
1 Associated Document
Manufacturer Communications
NUMBER: 05-85-21R
DATE: 04/27/21
REVISED: 04/27/21
MC-10191664-0001.pdf 1003.931KB
- 🚗2023 UPDATED FOR WIDER COMPATIBILITY: Specifically designed to work with most GM vehicles 2006-2023 (Chevy / Buick / GMC / Opel /Cadillac and more) equipped with 315/433 MHz. Your vehicle deserves the best tire pressure sensor reset tool.(It is not suitable for heavy trucks with more than 4 tires or vehicles with an external TPMS system.)Tip:Based on factory and customer-tested models shown in A+, please refer to the car model list to confirm compatibility with the VXDAS TPMS tool.
- SAVE TIME, SAVE MONEY: Tire pressure monitor sensor activation tool is quick, simple, and efficient. With a press of a button, activate your TPM sensors within 1-2 minutes, saving you trips to the dealer or a tire store.
- 🚗ESSENTIAL, EASY TO USE TOOL: This tire pressure reset tool is essential for replacing tire pressure sensors, removing tire pressure alarms or changing tires. Simply ensure your vehicle is in TPMS Learn Mode, hold the tool against the tire sidewall near the valve stem, and depress the Learn button! Sensors should be original OEM sensors which well programmed.and make sure your tire sensor is full charged or is under good conditions before use our TPMS tool.
- SUPERIOR QUALITY, SUPERIOR PERFORMANCE: Featuring a sensitive sensor chip for faster operation and an immersion gold process circuit board for stability. Our GM TPMS relearn tool is built for precision, accuracy, and durability.
- MAXIMIZE SAFETY WITH TPMS RELEARN TOOL: Ensure optimal tire pressure with our TPMS Reset tool. Enhance safety and gain control on every journey, taking away the worries of tire underinflation!
- TPMS RELEARN TOOL FOR GM: This tire pressure monitor system relearn tool is compatible with most General Motors equipped with 315 MHz or 433 MHz sensor, including Chevy, Buick, GMC, Opel, Cadillac, etc, from 2006-2024, Cars, SUV, Pickup, Not for Heavy Truck
- SAVE YOUR TIME AND MONEY: TPMS reset activation tool can help you reprogram all tires within 1-2 minutes. It is easy and fast to operate, simply press a button to reset the tire pressure monitoring sensor. Saving you money over paying dealer or tire shop
- EASY TO USE TIRE RESET TOOL: First, please set your car to tire learning mode, then hold the tool antenna against the sidewall of the tire near the valve stem(sensor), and press the button until the car beeps. If no beeps, please try multiple positions nearby
- ESSENTIAL TOOL FOR DRIVING: TPMS relearn tool is an essential tool of replacing tire sensor, clearing tire pressure alarm or changing tires. Please follow this order to reset: Front driver, Front passenger, Rear passenger and Rear driver, and the car will beep twice finally
- GOOD BATTERY CONDITION: Please use a 9v 6LR61 battery, not 6F22, as it may display low battery, please don't worry, this tool can still work in low battery state. A good condition will work more effectively. Battery not included
- 【Standard Specifications】: OEC-T5 specifications, EL-50448 measures approximately 6.1 x 2.4 x 1.4 inches and is comfortable to hold. It uses a 9V battery and has an operating temperature of -20~80°C. With it, individuals can easily complete the relearning of the vehicle pressure sensor, which can greatly save time and money on trips to the auto store.
- 【Activation Reset Function】: This is a must-have learning tool for replacing tire pressure sensors, removing tire pressure alarms or replacing tires. With a powerful activation reset function, quickly and easily reset your tire pressure sensor to keep your vehicle's tire pressure monitoring system operating optimally.
- 【Vehicle Universal】: Our activation tool is universal for most cars on the market, such as sedan, SUV, pickup truck, etc., not for large trucks. Please check the specifications of the reset tool before you buy to make sure it fits your vehicle. (Different vehicles may take different amounts of time to reset all tire sensors after rotation.)
- 【Easy to Use】: Make sure your vehicle is in learning mode and follow the maintenance procedures. Place the tool firmly against the tire sidewall, near the valve stem. While holding the tool against the tire sidewall, press the learn button. (Note: Make sure the battery is in good condition and the antenna is in the correct position when using)
- 【Reliable Material】: The shell is made of ABS plastic, solid and durable, effective against dust and splashing water drops. Wear-resistant, easy to use for a long time and protect the internal electronic components. Responsive and powerful performance, can activate the tire pressure sensor quickly and accurately within 1-2 minutes.
- INNOVATIVE 2-IN-1 DESIGN: VXDAS TPMS relearn tool supports for GM and Ford series vehicles, (Buick, Cadillac, Chevrolet, GMC, Lincoln, Mazda, F150, F250, Focus, Fusion, and more). The added "G" and "F" model switch button on top makes it more convenient to use
- COMPATIBILITY: VXDAS TPMS reset tool is compatible with vehicles equipped with the original tire pressure monitoring system based on 315/433Mhz. It is not suitable for heavy trucks with more than 4 tires or vehicles with an external TPMS system
- ESSENTIAL TOOL: Use the VXDAS tire pressure relearn tool after tire rotation, replacement tire pressure sensors, tire pressure alarm light removal, or when changing between summer and winter tires. Reset in the correct mode for successful relearning
- USER-FRIENDLY & COST-EFFECTIVE: Activate individual TPMS sensors quickly and easily by pressing the power button within 1 minute. Save $50-100 by turning off the tire pressure light yourself instead of visiting a dealer. Note: Requires a new 9V battery (not included in package) for optimal signal strength
- TRUSTED & RELIABLE: Choose the VXDAS TPMS sensor tool, a reliable option trusted by professional mechanics and developed by experienced engineers. Ensure your vehicle's safety with accurate tire pressure monitoring
- [Accurate Real-time Monitoring & Multi-Alert System]: Tymate TM7 tpms sensor can be used to monitor your tires’ pressure and temperature data within robust accuracy of ±1.5 PSI or ±3°F (The units can be displayed as ℃ or ℉ & BAR or PSI). Designed with six distinct alarm modes: high/low pressure, fast leakage, high temperature, sensor low battery, and sensor signal lost. This system is a reliable tool for maintaining tire health, and it is especially beneficial for DIY enthusiasts and pre-owned vehicle markets, where constant vigilance on tire conditions is paramount for safety and vehicle longevity
- [Easy Plug-in Power & Dual USB Charging]: Tymate TM7 tpms sensors set of 4 effortlessly powers up by plugging directly into your vehicle's cigarette lighter socket, eliminating the need for complex wiring or professional installation. Ideal for older vehicles lacking factory-installed TPMS, providing a quick and efficient safety upgrade for drivers. Also, This innovative tire pressure monitor not only ensures your safety on the road but also features two USB outlets, allowing you to charge mobile devices like smartphones and tablets. A perfect solution for commercial vehicle operators and budget-conscious drivers seeking added functionality without sacrificing vehicle space or convenience
- [Color LCD with Adjustable Backlight]: This device provides clear, easy-to-read tire pressure and temperature data in any light condition, thanks to the vibrant color LCD screen with adjustable backlight. This feature caters to all drivers, particularly those who commute daily or embark on long trips, ensuring visibility and readability at all times
- [Wide Pressure Range Detection & Long Signal Transmission]: Tymate's TM7 TPMS accurately detects tire pressures from 0 to 144 PSI, offering versatility for a variety of vehicles such as sedan car, suv, mpv, pickup truck, rv, and travel trailer (The system automatically calibrates to the center tire pressure, using sensor installation pairing for reference values). This tire pressure monitoring system boasts a robust transmission range, and it ensures consistent, reliable connection between sensors and monitor. Note: We highly suggest to utilize this system with Tymate RP05 repeater for towing longer trailer(total length≥36ft), after pairing with repeater the monitor will display "RV" mode
- [Easy to Use & Professional After-sale Service]: This Tymate TM7 TPMS is easy to setup in 5 minutes. The package box comes with comprehensive user’s manual and there are guide video available from the product page for you to follow steps by steps in the sensor pairing process. The sensors' battery replacing guide video is also available from listing, and the replacement sensor battery is CR1632. If you still have any questions about the product, please contact us for further assists
Last update on 2026-05-27 / Affiliate links / Images from Amazon Product Advertising API
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Bulletin Number: 05-85-21; Date: 04/27/21 Page 1 of 2 SERVICE INFORMATION BULLETIN 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. 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. NUMBER: 05-85-21R DATE: 04/27/21 REVISED: 04/27/21 APPLICABILITY: 2015-21MY Legacy and Outback 2017-21MY Impreza 2019-21MY Forester 2018-21MY Crosstrek 2019-21MY Ascent SUBJECT: 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. ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. © 2021 Subaru of America, Inc. All rights reserved. Bulletin Number: 05-85-21; Date: 04/27/21 Page 2 of 2 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.
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