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System Description

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. GENERAL 

    This system has the following functions: auto slide open and close; one-touch auto slide open and close; one-touch auto tilt up and down; jam protection; key off operation; key-linked open and close; and transmitter-linked open.

  2. FUNCTION OF MAIN COMPONENT 
    MAIN COMPONENT FUNCTION CHART

    Component Outline
    Sliding roof drive gear sub-assembly (Sliding roof ECU) Sliding roof ECU controls the rotational direction of the motor, which tilts or slides sliding roof glass
    Map light assembly (Sliding roof switch assembly) Operational signals are sent from the sliding roof switch built into the map light assembly to the sliding roof ECU
  3. SYSTEM OPERATION 

    The sliding roof has the following features.

    MAIN COMPONENT FUNCTION CHART

    Function Outline
    Auto open and close This function opens or closes the sliding roof in 7 stages according to the sliding roof rotary switch position
    One-touch auto open and close Pushing the sliding roof rotary switch once enables the sliding roof to be opened to the comfort stop position or fully closed If the rotary switch is pushed again during the sliding roof open or close operation, the sliding roof will stop the operation
    One-touch auto tilt up and down This function tilt up or down the sliding roof according to the sliding roof rotary switch position
    Jam protection The "jam protection" function automatically stops the sliding roof and moves it open half way (or fully tilt up) if a foreign object gets jammed in the sliding roof during close or tilt down operation
    Key-off operation The "key-off operation" function makes it possible to operate the sliding roof for approx 43 seconds after the engine switch is turned to on (ACC) or off, if the front doors are not opened
    Key-linked open and close function When key is not in the vehicle, the driver's door is locked, and the key in the driver's door is turned and maintained in the lock direction for 2 5 seconds or more, the sliding roof ECU activates the sliding roof motor to close the sliding roof while the key is turned Similarly, when the driver's door is unlocked, turning and maintaining the driver's door key in the unlock direction for 2 5 seconds or more will cause the sliding roof to be opened
    Transmitter-linked open function When the multiplex network master switch receives an unlock signal from the transmitter continuously for longer than 3 4 seconds, the sliding roof ECU control the sliding roof motor in accordance with the signal to open the sliding roof
    Sliding roof open warning When the engine switch is turned from on (IG) to off and the driver door is opened with the sliding roof open, the buzzer in the combination meter assembly sounds once Then, the warning message appears on the multi-information display
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