Programming and Relearning

PRECAUTION

1. GENERAL PRECAUTION

NOTE: When disconnecting the negative (-) terminal cable of the battery, initialize the following systems after the completion of the operation.

System Name
Lighting System (Adaptive Front-Lighting System)
Power Window System
Power Back Door System
Sliding Roof System

2. PRECAUTION OF LEXUS LINK SYSTEM

NOTE: If the ignition switch is turned to the ON position with the Airbag Sensor Assy Center connectors disconnected, if a vehicle battery is removed with the ignition switch in the ON position, or if the B+ circuit is OPEN within 10 seconds after the ignition switch is turned to the LOCK position, the system will determine this condition as a failure and it will automatically connect to the call center.

To prevent this, follow the procedure below when performing on operation related to the Airbag Sensor Assy Center or the battery:
- Disconnect the connectors of the telephone ECU (Mayday ECU) and the back-up battery before disconnecting the Airbag Sensor Assy Center connectors (Disconnect the connectors of the vehicle harness and the LEXUS link system).
- Be sure that the ignition switch is OFF when removing a vehicle battery.

HINT:
- When an emergency call is made automatically by accident, contact the call center and explain that it was a false alarm cancel it.
- If no signal has been received from the Airbag Sensor Assy Center since the ignition switch is turned to the ON position, a service call will be made.
- If signal reception from the Airbag Sensor Assy Center is interrupted while the ignition switch is in the ON position, an emergency call will be made.

3. PRECAUTION OF SUPPLEMENTAL RESTRAINT SYSTEM
a. Be sure to wait for 90 seconds or more after disconnecting the negative (-) terminal of the battery when performing the following.
1. Replacing the airbag sensor assy center, airbag sensor front LH, airbag front RH sensor, side airbag sensor assy LH and RH, airbag sensor rear LH and RH.
2. Adjusting the front or rear door of the vehicle equipped with the side airbag and curtain shield airbag.

b. When connecting or disconnecting the connectors, ensure that the airbag sensor assy center, airbag sensor front LH, airbag front RH sensor, side airbag sensor assy LH and RH, airbag sensor rear LH and RH have already been installed in the vehicle.
c. Do not use an airbag sensor assy center, airbag sensor front LH, airbag front RH sensor, side airbag sensor assy LH and RH, airbag sensor rear LH and RH that has been dropped during the operation or transportation.
d. When installing the airbag sensor assy center, airbag sensor front LH, airbag front RH sensor, side airbag sensor assy LH and RH, and airbag sensor rear LH and RH, ensure they are affixed with the specified torque.
e. Do not disassemble the airbag sensor assy center, airbag sensor front LH, airbag front RH sensor, side airbag sensor assy LH and RH, and airbag sensor rear LH and RH.

4. PRECAUTION OF FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM

a. Perform the zero point calibration and sensitivity check if any of the following conditions occur.
- The occupant classification ECU is replaced.
- Accessories (seatback tray and seat cover, etc.) are installed.
- The passenger seat is removed from the vehicle.
- Both the SRS warning light and the passenger airbag OFF indicator light come on.
- The vehicle is brought to the workshop for repair due to an accident or a collision.

NOTE: When an accident vehicle is brought into the workshop for repair, check the flatness of the body side that is equipped with the passenger seat. If the flatness is not within ± 3.0 mm (0.118 in.), adjust it to the specified range.