Camry 2008-2009

Tire Pressure Monitor System

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Precautions



Specific to:

Toyota Camry 2009-2010

Refer to Tire Pressure Monitor Precautions under Chassis Electrical.

When the tire pressure warning light comes on, immediately check the tire pressure and adjust it to the specified value. (The tire pressure warning light will come on if there is an open in the tire pressure warning light circuit.).

When the tire pressure warning light blinks (comes on after blinking for 1 minute), there is a malfunction in the system. Check for DTCs.

It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU

When replacing the tire pressure warning ECU: Using the DATA LIST, read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU. Register the transmitter IDs after installing a new tire pressure warning ECU.

When replacing the tire pressure warning valve and transmitter: Take a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires and wheels on the vehicle.

Click image to see an enlarged view

Fig. Tire pressure warning valve and transmitter


NOTE
The transmitter ID is written on the tire pressure warning valve and transmitter. It will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.

Initialize the tire pressure warning system after any of the following is performed: Replacing the tire pressure warning ECU or the tire pressure warning valve and transmitter. Installing tire(s) which require different tire pressure. Rotating tires on vehicles with differing front and rear tire inflation pressures. Changing the tire inflation pressure by changing traveling speed or load weight, etc.


WARNING
The tire pressure warning system will not operate properly if it is not initialized.

Precautions about the tire pressure: The tire pressures decrease naturally. In winter, tire pressures may decrease due to low ambient temperatures (tire pressure decreases by approximately 1.45 psi (0.2 kgf/cm 2, 10 kPa) for every 50°F (10°C) drop in the ambient temperature). Therefore, the tire pressure warning is more likely to operate if the tire pressures are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires high so that the tire pressures are suitable under cold conditions. Incorrect tire pressure warning operation becomes less likely.

When tires and wheels are replaced, always ensure that each transmitter ID is correctly registered.

Fail-safe function: When a system malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks (comes on after blinking for 1 minute) and informs the driver of the system failure. The result of this diagnosis is stored in the tire pressure warning ECU.

After repairs, confirm that the actual tire pressures are displayed in the Data List.

Pressure Monitor



Precautions

When the tire pressure warning light comes on, immediately check the tire pressure and adjust it to the specified value. (The tire pressure warning light will come on if there is an open in the tire pressure warning light circuit.).

When the tire pressure warning light blinks (comes on after blinking for 1 minute), there is a malfunction in the system. Check for DTCs.

It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU

When replacing the tire pressure warning ECU: Using the DATA LIST, read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU. Register the transmitter IDs after installing a new tire pressure warning ECU.

When replacing the tire pressure warning valve and transmitter: Take a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires and wheels on the vehicle.

Click image to see an enlarged view

Fig. Tire pressure warning valve and transmitter


NOTE
The transmitter ID is written on the tire pressure warning valve and transmitter. It will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.

Initialize the tire pressure warning system after any of the following is performed: Replacing the tire pressure warning ECU or the tire pressure warning valve and transmitter. Installing tire(s) which require different tire pressure. Rotating tires on vehicles with differing front and rear tire inflation pressures. Changing the tire inflation pressure by changing traveling speed or load weight, etc.


WARNING
The tire pressure warning system will not operate properly if it is not initialized.

Precautions about the tire pressure: The tire pressures decrease naturally. In winter, tire pressures may decrease due to low ambient temperatures (tire pressure decreases by approximately 1.45 psi (0.2 kgf/cm 2, 10 kPa) for every 50°F (10°C) drop in the ambient temperature). Therefore, the tire pressure warning is more likely to operate if the tire pressures are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires high so that the tire pressures are suitable under cold conditions. Incorrect tire pressure warning operation becomes less likely.

When tires and wheels are replaced, always ensure that each transmitter ID is correctly registered.

Fail-safe function: When a system malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks (comes on after blinking for 1 minute) and informs the driver of the system failure. The result of this diagnosis is stored in the tire pressure warning ECU.

After repairs, confirm that the actual tire pressures are displayed in the Data List.

Receiver



Removal & Installation
  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the rear seat cushion assembly.
  6.  
  7. Remove the rear seat headrest assembly.
  8.  
  9. Remove rear center seat headrest assembly.
  10.  
  11. Remove rear seatback assembly.
  12.  
  13. Remove rear seat cushion assembly.
  14.  
  15. Remove the left rear seatback assembly.
  16.  
  17. Remove rear seat headrest assembly.
  18.  
  19. Remove rear seatback cover.
  20.  
  21. Remove the left rear door scuff plate.
  22.  
  23. Remove the left rear seat side garnish.
  24.  
  25. Remove the left hand roof side inner garnish assembly.
  26.  
  27. Remove the tire pressure warning receiver assembly, as follows:
    1. Remove the bolt.
    2.  
    3. Disconnect the connector and the tire pressure warning receiver assembly.

      Click image to see an enlarged view

      Fig. Removing the tire pressure warning receiver

    4.  

  28.  

To install:

  1. Installation is the reverse of the removal procedure. Tighten the tire pressure warning receiver assembly bolt to 66 inch lbs. (7.5 Nm).
  2.  
  3. Following installation, inspect the tire pressure warning system.
  4.  

Reset Switch



Removal & Installation

CAUTION
Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing the tire pressure warning reset switch.

  1. Disconnect the negative battery cable.
  2.  
  3. Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent the airbag from deploying.
  4.  
  5. Remove RH front door scuff plate.
  6.  
  7. Remove RH cowl side trim sub-assembly.
  8.  
  9. Remove No. 2 instrument panel under cover sub-assembly.
  10.  
  11. Remove lower instrument panel sub-assembly.
  12.  
  13. Disengage the 2 claws and remove the tire pressure warning reset switch from the lower instrument panel sub-assembly.

    Click image to see an enlarged view

    Fig. Removing the tire pressure warning reset switch

  14.  

To install:

  1. Installation is the reverse of the removal procedure. Following installation, inspect the tire pressure warning system.
  2.  

Servicing



Specific to:

Toyota Camry 2007-2008

  1. Before servicing the vehicle, refer to the precautions section.
    WARNING
    Before removing the tire pressure warning ECU, read the registered transmitter IDs of all wheels and write them down to use for re-registration of transmitter IDs.

  2.  
  3. Disconnect the negative battery cable.
    CAUTION
    Wait for 90 seconds after disconnecting the cable to prevent the airbag from deploying.

  4.  
  5. Remove the right cowl side trim sub-assembly.
  6.  
  7. Remove the right front door scuff plate.
  8.  
  9. Remove the No. 2 instrument panel under cover sub-assembly.
  10.  
  11. Remove the right instrument panel finish lower panel.
  12.  
  13. Disconnect the connector from the tire pressure warning ECU.
  14.  
  15. Remove the screw and the tire pressure warning ECU.

    Click image to see an enlarged view

    Fig. Removing the tire pressure warning ECU

  16.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Following installation, register transmitter ID and inspect and initialize the tire pressure warning system.
    NOTE
    Be sure to register the transmitter IDs of all tires including the grand spare tire in the ECU before initialization.


    NOTE
    Be sure to inflate all tires to the proper inflation pressure before initialization.

  4.  

Specific to:

Toyota Camry 2009-2010

  1. Before servicing the vehicle, refer to the precautions section.
    WARNING
    Before removing the tire pressure warning ECU, read the registered transmitter IDs of all wheels and write them down to use for re-registration of transmitter IDs.

  2.  
  3. Disconnect the negative battery cable.
    CAUTION
    Wait for 90 seconds after disconnecting the cable to prevent the airbag from deploying.

  4.  
  5. Remove the right cowl side trim sub-assembly.
  6.  
  7. Remove the right front door scuff plate.
  8.  
  9. Remove the No. 2 instrument panel under cover sub-assembly.
  10.  
  11. Remove the right instrument panel finish lower panel.
  12.  
  13. Disconnect the connector from the tire pressure warning ECU.
  14.  
  15. Remove the screw and the tire pressure warning ECU.

    Click image to see an enlarged view

    Fig. Removing the tire pressure warning ECU

  16.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Following installation, register transmitter ID and inspect and initialize the tire pressure warning system.
    NOTE
    Be sure to register the transmitter IDs of all tires including the grand spare tire in the ECU before initialization.


    NOTE
    Be sure to inflate all tires to the proper inflation pressure before initialization.

  4.  

Replacing Tire Pressure Warning Receiver

Specific to:

Toyota Camry 2007-2008

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the rear seat cushion assembly.
  6.  
  7. Remove the rear seat headrest assembly.
  8.  
  9. Remove rear center seat headrest assembly.
  10.  
  11. Remove rear seatback assembly.
  12.  
  13. Remove rear seat cushion assembly.
  14.  
  15. Remove the left rear seatback assembly.
  16.  
  17. Remove rear seat headrest assembly.
  18.  
  19. Remove rear seatback cover.
  20.  
  21. Remove the left rear door scuff plate.
  22.  
  23. Remove the left rear seat side garnish.
  24.  
  25. Remove the left hand roof side inner garnish assembly.
  26.  
  27. Remove the tire pressure warning receiver assembly, as follows:
    1. Remove the bolt.
    2.  
    3. Disconnect the connector and the tire pressure warning receiver assembly.

      Click image to see an enlarged view

      Fig. Removing the tire pressure warning receiver

    4.  

  28.  

To install:

  1. Installation is the reverse of the removal procedure. Tighten the tire pressure warning receiver assembly bolt to 66 inch lbs. (7.5 Nm).
  2.  
  3. Following installation, inspect the tire pressure warning system.
  4.  

Replacing Tire Pressure Warning Reset Switch

Specific to:

Toyota Camry 2007-2008


CAUTION
Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing the tire pressure warning reset switch.

  1. Disconnect the negative battery cable.
  2.  
  3. Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent the airbag from deploying.
  4.  
  5. Remove RH front door scuff plate.
  6.  
  7. Remove RH cowl side trim sub-assembly.
  8.  
  9. Remove No. 2 instrument panel under cover sub-assembly.
  10.  
  11. Remove lower instrument panel sub-assembly.
  12.  
  13. Disengage the 2 claws and remove the tire pressure warning reset switch from the lower instrument panel sub-assembly.

    Click image to see an enlarged view

    Fig. Removing the tire pressure warning reset switch

  14.  
  15. Installation is the reverse of the removal procedure. Following installation, inspect the tire pressure warning system.
  16.  

 
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