Programming and Relearning

LEXUS LINK SYSTEM

PRECAUTION

NOTE: When disconnecting the negative (-) battery terminal, initialize the following system after the terminal is reconnected.

INSPECTION PRECAUTION FOR LEXUS LINK SYSTEM

a. The GPS antenna for the LEXUS link system is installed on the upper back panel (located on the right side of the luggage room). Attaching metallic film to the rear glass or setting any object close to the rear speakers prevents the position data from being received properly.

b. The LEXUS link system will automatically contact the LEXUS link center if any of the following is detected: 1) the ignition switch is turned ON while the airbag sensor assy center connector is disconnected, 2) the ignition switch is turned OFF and then the +B circuit is open within 10 seconds, and/or 3) the ignition switch is ON and then the vehicle battery is removed.

To prevent this, perform the following before work related to the airbag sensor assy center or battery:

- Disconnect the connectors of the telephone ECU assy (Mayday ECU) and the portable phone-L battery (back-up battery) before disconnecting the airbag sensor assy center connector.
- Be sure to remove the vehicle battery for 10 seconds or more after the ignition switch is turned OFF.

HINT:
- When an automatic emergency call is made accidentally, contact the LEXUS link center and ask them to disregard the call.
- If no signal has been received from the airbag sensor assy center since the ignition switch was turned ON, a service call will be made.
- If signal reception from the airbag sensor assy center is interrupted while the ignition switch is ON, an emergency call will be made.

c. When the portable phone-L battery runs low, the voltage drops and the telephone ECU sets DTC 12-1. Perform troubleshooting according to the malfunction indicated by DTC 12-1.