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

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

• After the engine switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal.
• When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.

  System Name	See Procedure
  Lane Departure Alert System (w/ Steering Control)
  Intelligent Clearance Sonar System
  Parking Assist Monitor System
  Panoramic View Monitor System
  Pre-collision System
  Lighting System (for Gasoline Model with Cornering Light)

NOTICE:

• When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
  • A communication malfunction DTC may be stored.
  • The radio and display receiver assembly may not operate normally.

• When replacing the DCM (telematics transceiver), be sure to replace it with a new one (w/ Manual (SOS) Switch).

PRECAUTION FOR AUDIO AND VISUAL SYSTEM

(a) If any of the following parts are replaced, refer to Initialization in Repair Instruction.

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• Radio and display receiver assembly*1
• DCM (telematics transceiver)*2

• *1: After replacing the radio and display receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, SiriusXM radio ID registration is necessary (w/ SXM Function).

  *2: w/ Manual (SOS) Switch