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TPMS: Subaru Legacy and Outback 2005-2013

Information provided by Mitchell 1
Posted on September 4, 2015
Figure 1: Removing the tire pressure sensor.

Figure 1: Removing the tire pressure sensor.

SUBJECT VEHICLE: 2005 – 2013 Subaru Legacy and Outback.

RELEARN PROCEDURE? Yes.

SPECIAL TOOLS NEEDED? Yes, the Subaru Select Monitor and Transmitter Registration Tool (TPM-00012 or Kent-Moore Part No. FJ45295).

The tire pressure monitor system (TPMS) on the 2005 – 2013 Subaru Legacy and Outback checks the tire pressures of all four road wheels when the vehicle is driven at speeds above 25 mph (40 km/h), and warns in the event of a loss of pressure by means of a low tire pressure warning light.

A sensor installed in each wheel will indicate when tire pressure is severely low. The TPMS will activate only when the vehicle is driven.

CAUTION: The airbag system wiring harness is routed near the TPMS control module. All air bag system wiring harnesses are colored yellow. Do not use electrical test equipment on these circuits. Be careful not to damage the airbag system wiring harness when servicing the TPMS control module.

Figure 2: Installing the tire pressure sensor.
Figure 2: Installing the tire pressure sensor.

Under the following conditions, the system may not function properly:

  • If tire pressures are incorrect.
  • If tires are damaged or punctured.
  • Air pressure sensor malfunction.
  • Air pressure sensor is out of battery power.
  • Tire pressure monitoring control module is faulty.
  • Defective vehicle harness.
  • Defective combination meter.
  • Defective air pressure sensor.
  • Defective tire pressure monitoring control module.
  • If battery fluid, gravity and voltage are out of specification (12 volts or more at specific gravity of 1.260 or more).
  • Defective combination meter.

Tire pressure monitor warning light

When the low tire pressure warning light illuminates, immediately check air pressure of all tires and adjust to the specified pressure. After adjusting air pressure, drive the vehicle at 25 mph (40 km/h) or more to start TPMS re-checking of the tire inflation pressures. The warning light should turn off in a few minutes. If the warning light is still on after adjusting tire pressure, check for a damaged tire and repair as necessary. If the warning light blinks 25 times and then illuminates, and there is not a tire without a tire pressure sensor installed, there is a malfunction in the TPMS. See the appropriate manufacturer service information.

Figure 3: Positioning the tire changer boom.
Figure 3: Positioning the tire changer boom.

Reset procedures

NOTE: When a tire pressure sensor or TPMS control module is replaced, or when wheels are changed, the tire pressure sensor IDs must be registered. NOTE: If tires were rotated, the performance and function of the TPMS is not affected. However, tire positions are not displayed in the Subaru Select Monitor correctly.

When the low tire pressure warning light illuminates, immediately check air pressure of all tires and adjust to the specified pressure. After adjusting air pressure, drive the vehicle at 25 mph (40 km/h) or more to start the TPMS re-checking of the tire inflation pressures. The warning light should turn off in a few minutes.

Tire pressure sensor registration

NOTE: In the following procedure, the Subaru Select Monitor and Transmitter Registration Tool (TPM-00012 or Kent-Moore Part No. FJ45295) must be used.

NOTE: If the ignition switch and power supply of the Subaru Select Monitor are turned off or the registration procedure is not performed within five minutes, the registration mode is cancelled.

NOTE: If the tires were rotated, the performance and function of the TPMS is not affected. However, tire positions are not displayed in the Subaru Select Monitor correctly. Register transmitter IDs after rotation if the correct display of tire sensor positions is required.

NOTE: If registration procedure is not successful after two attempts, replace the TPMS control module.

1) Set the tire pressure of all wheels to specification.

2) Connect the Subaru Select Monitor.

3) On the “MAIN MENU” screen, select “EACH SYSTEM CHECK” and press the YES (or OK) key.

4) On the “SYSTEM SELECTION MENU” screen, select “TIRE PRESSURE MONITORING” and press the YES (or OK) key.

5) Press the YES (or OK) key after “TIRE PRESSURE MONITORING” is displayed.

6) On the “TIRE PRESSURE MONITOR DIAGNOSIS” screen, select “TRANSMITTER ID REGIST CONFIRM” and press the YES (or OK) key.

Figure 4: Identifying the wheel, transmitter, screw and valve.
Figure 4: Identifying the wheel, transmitter, screw and valve.

7) When “ID REGISTRATION MODE EXECUTE, REGISTERED ID IS DELETED PROCEED?” is displayed, press the YES (or OK) key.

8) Using the Transmitter Registration Tool (TPM-00012 or Kent-Moore Part No. FJ45295), contact the sidewall near the air valve of the front left tire and press the switch to send the transmitter ID to the TPMS control module (at this time, the tire pressure warning light blinks to start the registration procedure). Register the tire pressure sensors, while noting the following:

  • Register transmitters in the following order: left front, right front, right rear, and then left rear.
  • The transmitter registration tool should be in contact with the sidewall near the transmitter.
  • After registration for each tire completes, the hazard light will blink and “ID REGISTRATION COMPLETED” will be displayed.
  • If the registration procedure is stopped before completion (turning ignition switch to the OFF position, wrong registration order, etc.), repeat the procedure from step 6 .

9) After the ID registration is completed, the tire pressure warning light will turn on for two seconds.

10) Check the registered transmitter IDs. See DISPLAY TRANSMITTER IDs. After all IDs are confirmed, drive the vehicle at 25 mph (40 km/h) for 10 minutes.

Display transmitter IDs

NOTE: In the following procedure, the Subaru Select Monitor must be used.

1) Connect the Subaru Select Monitor.

2) On the “MAIN MENU” screen, select “EACH SYSTEM CHECK” and press the YES (or OK) key.

3) On the “SYSTEM SELECTION MENU” screen, select “TIRE PRESSURE MONITORING” and press the YES (or OK) key.

4) Press the YES (or OK) key after “TIRE PRESSURE MONITORING” is displayed.

5) On the “TIRE PRESSURE MONITOR DIAGNOSIS” screen, select “TRANSMITTER ID REGIST CONFIRM” and press the YES (or OK) key.

6) Select “TRANSMITTER ID DATA MONITOR.” and press the YES (or OK) key to display transmitter IDs.

Figure 5: Identifying the transmitter and setting the tire changer boom in position.
Figure 5: Identifying the transmitter and setting the tire changer boom in position.

Demounting/mounting procedures

CAUTION: The tire should be demounted from the wheel using the tire changer manufacturer’s instructions. Use the following information to avoid damage during the demounting/mounting procedures.

NOTE: It may not be possible to install tire pressure sensors on some types of wheels. Use wheels that have the same part number as the standard equipment wheels.

NOTE: When a tire pressure sensor or TPMS control module is replaced, or when wheels are changed, the tire pressure sensor IDs must be registered. See reset procedures.

NOTE: If the tires were rotated, the performance and function of the TPMS is not affected. However, tire positions are not displayed in the Subaru Select Monitor correctly.

NOTE: If adjustment of tire pressure is performed indoors in winter, the difference between indoor and outdoor temperature is large. When the vehicle is out, tire pressure will go down and the tire pressure warning light might operate. To avoid this situation, adjustment of tire pressure needs to be slightly high considering the difference between indoor and outdoor temperature (about 1 psi (7 kPa) for every 10 degrees Fahrenheit (5.6 degrees Celsius) difference.

Tire pressure sensor

CAUTION: The use of tire sealants is strictly prohibited for vehicles equipped with TPMS. Tire sealants can clog tire pressure sensors.

Removal and Installation (2005-08):

NOTE: Use a new grommet when reusing the transmitter.

NOTE: For all years, register tire pressure sensor IDs once the wheels have been mounted. See reset procedures.

Always use a new Torx screw and valve when reusing the transmitter body. ■

Information for this column comes from Mitchell 1’s “Tire Pressure Monitoring Systems Guide” for domestic and import vehicles. Headquartered in Poway, Calif., Mitchell 1 has provided quality repair information solutions to the automotive industry for more than 80 years. For more information, visit website www.mitchell1.com.

(All illustrations are courtesy of Subaru of America Inc.)

To see more TPMS columns, click:

Buick Enclave -- 2008-2013

Nissan Altima 2007-2013

Ford Explorer 2011-2013

Related Topics: Mitchell 1, TPMS

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