LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2013 >> LS 460 F Sport, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) >> SFI System >> Precaution [09/2012 - ] >> Precaution [09/2012 - ]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Precaution [09/2012 - ]

  1. INITIALIZATION 
    NOTE:

    HINT: 

    Initialization cannot be completed by only removing the battery.

  2. FOR USING TECHSTREAM 
    WARNING:

    Observe the following items for safety reasons:

    • Read its instruction books before using the Techstream.
    • Prevent the Techstream cable from being caught on the pedals, shift lever and steering wheel when driving with the Techstream connected to the vehicle.
    • When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One drives the vehicle and the other operates the Techstream.
  3. DISCONNECT AND RECONNECT CABLE OF NEGATIVE BATTERY TERMINAL 
    Fig 1: Identifying Negative Battery Cable & Terminal
    GTY107922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Before performing electronic work, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out.
      NOTE:

      After the engine switch is turned off, the multi-media module receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

      WAITING TIME BEFORE DISCONNECTING CABLE FROM NEGATIVE (-) BATTERY TERMINAL

      Condition Waiting Time
      Vehicle enrolled in safety connected system 6 minutes
      Vehicle not enrolled in safety connected system 1 minute
    2. Before disconnecting and reconnecting the battery cable, turn the engine switch off and the headlight dimmer switch OFF. Then loosen the terminal nut completely. Do not damage the cable or terminal.
    3. When the battery cable is disconnected, the clock and radio settings and stored DTCs are erased. Therefore, before disconnecting the battery cable, make a note of them.
      NOTE:
      • When disconnecting and reconnecting the cable from the negative (-) battery terminal, the cowl top ventilator louver must also be removed and installed. Be sure to install the cowl top ventilator louver properly. If it is not installed properly, water may enter the engine room and cause malfunctions.
      • When disconnecting the battery cable, some systems need to be initialized after the battery cable is reconnected. Refer to INITIALIZATION [09/2012 - ] .