System Description

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

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, and jam protection

HINT

If the driver side door is opened with the power switch OFF and the sliding roof open, the buzzer sounds and the combination meter indicates that the sliding roof is open

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

SYSTEM OPERATION

The sliding roof has the following features

SLIDING ROOF FUNCTION CHART

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 less than 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 0 3 seconds or more
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 less than 0 3 seconds
AUTO tilt up and down	This function causes sliding roof to be fully tilted up (or tilted down) when TILT UP switch (or TILT DOWN switch) is pressed for 0 3 seconds or more
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 power 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 / tilt 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 / tilt 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