Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Registration

REGISTRATION

PROCEDURE

1. BEFORE REGISTRATION

NOTICE:

• The transmitter ID is written on the tire pressure warning valve and transmitter. It is not possible to read the transmitter ID after installing the tire onto the wheel. Therefore, make a note of the transmitter ID before installing the tire.
• Make sure to perform ID registration using the Techstream after replacing the tire pressure warning ECU and receiver.

(a) When replacing the tire pressure warning ECU and receiver:

(1) When replacing the tire pressure warning ECU and receiver, read the transmitter IDs and number of the transmitters (4 or 5) stored in the old ECU using the Techstream and write them down before removal.

(2) If reading the stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning ECU and receiver, remove the tires from the wheels and check the IDs located on the tire pressure warning valve and transmitters.

(b) When replacing a tire pressure warning valve and transmitter:

(1) Take a note of the 7-digit number (transmitter ID) written on the tire pressure warning valve and transmitter.

NOTICE:

For vehicles equipped with the wheel speed type tire inflation pressure display function, be sure to use tire pressure warning valve and transmitters with identification marks.

2. REGISTER TRANSMITTER ID (USING TECHSTREAM)

HINT:

• The previously registered IDs will be cleared from memory when registration is completed.
• If the ID registration step is not completed within 300 seconds, ID registration will be canceled.

(a) Set the tire pressure to the specified value.

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(b) Turn the power switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration/Tire Number Registration.

(g) Perform the procedure displayed on the Techstream.

HINT:

The number of registered tire pressure warning valve and transmitters can only be set to 4 when the value is currently set to 5. The number of registered tire pressure warning valve and transmitters should only be changed from the default value when requested by the customer.

3. CONFIRMATION OF TRANSMITTER ID REGISTRATION (USING TECHSTREAM)

NOTICE:

• It may take a few minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121 to C2124.

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• If the transmitter IDs have not been registered, DTC C2171 is stored in the tire pressure warning ECU and receiver after 3 minutes or more.
• If normal pressure values are displayed, the transmitter IDs have been registered correctly.
• If the tire pressure values are not displayed after a few minutes, the transmitter IDs may be incorrect or the system may have a malfunction.
• After all transmitter IDs are registered, DTC C2126 is stored in the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute and then illuminates. When the tire pressure warning ECU and receiver successfully receives signals from all the transmitters whose IDs are stored in the ECU, DTC C2126 is cleared and the tire pressure warning light goes off.

(a) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

HINT:

*1: It may take a few minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121 to C2124.

(b) Reduce the tire inflation pressure of each tire 40 kPa (0.4 kgf/cm2, 5.8 psi) or more, and check that the "ID Tire Inflation Pressure" data is updated and that the actual tire inflation pressures are displayed.

(c) After confirming that all of the tire inflation pressure values (except the compact spare tire) have been updated, adjust the tire inflation pressure to the specified value, operate the steering pad switch assembly and perform initialization.

4. REGISTER TRANSMITTER ID (USING AUTOMATIC ID REGISTRATION FUNCTION)

NOTICE:

• If the automatic ID registration operation is canceled while registration is being performed, DTC C2126 is stored in the tire pressure warning ECU and receiver.
• If the automatic ID registration is started while DTC C2126 is stored, DTC C2126 and C2128 are stored in the tire pressure warning ECU and receiver.
• During registration, DTC C2128 is stored by the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute then illuminates. When the tire pressure warning ECU and receiver successfully receives signals from all the transmitters whose IDs are stored in the ECU, DTC C2128 is cleared and the tire pressure warning light turns off.
• If a tire pressure warning valve and transmitter of the same type is carried in the vehicle, registration may not complete.

HINT:

• When registration is complete, all previously registered IDs are cleared.
• If DTCs C2176, C2179 and U0129 are stored, registration mode cannot be entered.
• If the Techstream is being used to display the Data List, registration mode cannot be entered.
• If the Techstream is used to display the Data List during registration, registration will be canceled.
• If DTCs C2176, C2179 and U0129 are stored during registration, registration will be canceled.
• If the power switch is turned off before the vehicle is driven after entering registration mode, registration will be canceled.

(a) Adjust the tire pressure in all tires to the specified pressure.

(b) Turn the power switch off and stop the vehicle for 15 minutes or more.

HINT:

After stopping the vehicle for 15 minutes or more, the frequency of electrical wave signals sent by the tire pressure warning valve and transmitters increases for the first few minutes of driving (8 times the normal frequency).

(c) Select "Change Wheel" on the multi-information display and press and hold the "OK" switch (steering pad switch assembly) until the tire pressure warning light blinks 3 times.

HINT:

During registration, the tire pressure warning light blinks for 1 minute before turning on, the multi-information display tire pressure displays as "- -" and "Tire Pressure Recalibrating Please Wait until Complete" is displayed.

(d) Drive at approximately 40 km/h (25 mph) for approximately 10 to 30 minutes during 1 trip.

(e) During the procedure, make 2 or more right or left turns.

HINT:

Do not drive the vehicle in reverse during registration.

If the vehicle is driven in reverse during registration, the information may be reset before registration completes, and registration may take longer than normal to complete.

(f) When registration is completed, the tire pressure warning light turns off, the normal tire pressure is displayed on the multi-information display and "Tire Pressure Recalibrating Please Wait until Complete" stops displaying.

HINT:

• Registration may take longer than normal in the following situations.
  • The vehicle is stopped frequently
  • The vehicle is stopped for long period of time
  • The vehicle is driven in reverse
  • The vehicle is driven on rough roads or uneven surfaces
  • The vehicle is driven in close proximity to another vehicle with the same type of tire pressure warning valve and transmitter installed for a long period of time
  • The vehicle was not stopped for 15 minutes or more before registration
  • The vehicle is driven at 40 km/h (25 mph) or less for a long period of time
  • The power switch is turned off during ID registration

5. TIRE POSITION IDENTIFICATION (USING TECHSTREAM) (Tire Inflation Pressure Display Function)

(a) Set the tire pressure to the specified value.

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(b) Turn the power switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

HINT:

*1: It may take a few minutes until the values are displayed.

(g) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

NOTICE:

• It may take a few minutes until the values are displayed.
• When an "ID Tire Inflation Pressure" value has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck the value.

(h) Read the "ID Tire Inflation Pressure" value and identify the tire with reduced pressure, and record the corresponding tire pressure warning valve and transmitter (ID1 to ID4).

(i) Repeat for each tire.

(j) Set the tire pressure to the specified value.

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(k) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / Tire Position Write.

(l) Perform the procedure displayed on the Techstream.

6. TIRE POSITION IDENTIFICATION (NOT USING TECHSTREAM) (Tire Inflation Pressure Display Function)

(a) Set the tire pressure to the specified value.

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(b) Perform initialization to clear the existing tire position information, then drive the vehicle at 40 km/h (25 mph) or more for 10 to 30 minutes in 1 trip until each tire position is automatically identified.

HINT:

• Do not drive the vehicle in reverse gear while performing Tire Position Identification. If the vehicle is driven in reverse gear while performing Tire Position Identification, identification information will be discarded and Tire Position Identification may take longer than usual.
• Tire Position Identification may take longer than normal in the following situations.
  • The vehicle is stopped frequently
  • The vehicle is stopped for long period of time
  • The vehicle is driven in reverse
  • The vehicle is driven on rough roads or uneven surfaces
  • The vehicle is driven in close proximity to another vehicle with the same type of tire pressure warning valve and transmitter installed for a long period of time
  • The vehicle was not stopped for 15 minutes or more before registration
  • The vehicle is driven at 40 km/h (25 mph) or less for a long period of time