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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof >> Sliding Roof System >> System Description

System Description

  1. GENERAL 

    This system has the following functions: manual slide open and close; AUTO slide open and close; manual tilt up and down; AUTO tilt up and down; jam protection.

    HINT:

    If the driver side door is opened with the engine switch off and the sliding roof open, the buzzer sounds and the combination meter displays that the sliding roof is open.

  2. FUNCTION OF MAIN COMPONENT 
    FUNCTION OF MAIN COMPONENT

    Component Outline
    Sliding roof drive gear sub-assembly (Sliding roof ECU) Sliding roof ECU controls sliding roof motor to rotate forward and backward, which tilts or slides sliding roof glass
    Map light assembly (Sliding roof switch) Output of operation signals from built-in sliding roof switch to sliding roof ECU are handled by map light
  3. SYSTEM OPERATION 

    The sliding roof has the following features.

    SLIDING ROOF SYSTEM OPERATION

    Function Outline
    Manual slide open and close This function causes sliding roof to open (or close) when SLIDE OPEN switch (or SLIDE CLOSE switch) is pressed for a maximum of 0.3 seconds Sliding roof stops as soon as switch is released
    AUTO slide open and close This function causes sliding roof to be fully opened (or closed) when SLIDE OPEN switch (or SLIDE CLOSE switch) is pressed for a minimum of 0.3 seconds
    Manual tilt up and down This function causes sliding roof to tilt up (or tilt down) when TILT UP switch (or TILT DOWN switch) is pressed for a maximum of 0.3 seconds
    AUTO tilt up and down This function enables sliding roof to tilt up (or down) when TILT UP switch (or TILT DOWN switch) is pressed for a minimum of 0.3 seconds
    Jam protection function The jam protection function automatically stops sliding roof, or stops sliding roof and makes it open halfway (or fully tilts it upward) if a foreign object gets jammed in sliding roof during AUTO close operation (or AUTO tilt down operation)
    Key-off operation Key-off operation function makes it possible to operate sliding roof for approximately 45 seconds after engine switch is turned off if front doors are not opened
    Transmitter-linked open operation When main body ECU receives an unlock signal from key continuously for 3.0 seconds or more, sliding roof ECU activates sliding roof motor to open / up sliding roof
    Key-linked open / close operation When key is not in vehicle, driver side door is locked, and key inserted into driver side door key cylinder is turned and maintained in lock position for 3.0 seconds or more, sliding roof ECU activates sliding roof motor to close sliding roof while key is turned Similarly, when driver side door is unlocked and key in driver side door is turned and maintained in unlock position for 3.0 seconds or more, sliding roof ECU activates sliding roof motor to open / up sliding roof
    Entry lock switch-linked close operation When certification ECU receives a lock signal from entry lock switch (driver door) continuously for 3.0 seconds or more, sliding roof ECU activates sliding roof motor to close sliding roof
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