- When the key is not in the vehicle, the driver door is unlocked, and the driver door key cylinder is turned and held in the unlock position for 2.5 seconds or more, the sliding roof drive gear sub-assembly (sliding roof ECU) activates the sliding roof motor to open the sliding roof while the key is turned.
- When the key is not in the vehicle, the driver door is locked, and the driver door key cylinder is turned and held in the lock position for 2.5 seconds or more, the sliding roof drive gear sub-assembly (sliding roof ECU) activates the sliding roof motor to close the sliding roof while the key is turned.
Lexus NX: System Description
Lexus NX Service Manual / Vehicle Exterior / Sliding Roof / Convertible / Sliding Roof System / System Description
SYSTEM DESCRIPTION
SLIDING ROOF SYSTEM DESCRIPTION
(a) The sliding roof system controls the sliding roof operation using the sliding roof drive gear sub-assembly (sliding roof ECU). Operating the map light assembly sliding (slide roof switch) results in electrical power being transmitted to the sliding roof drive gear sub-assembly (sliding roof ECU).
FUNCTION OF MAIN COMPONENT
The sliding roof system consists of the following components:
| Component | Outline |
|---|---|
| Sliding roof drive gear sub-assembly (sliding roof ECU) | The sliding roof drive gear sub-assembly (sliding roof ECU) controls the rotational direction of the motor, which tilts or slides the sliding roof glass. |
| Map light assembly (slide roof switch) | The map light assembly (slide roof switch) outputs operation signals to the sliding roof drive gear sub-assembly (sliding roof ECU). |
SYSTEM FUNCTION
The sliding roof system has the following functions:
| Function | Outline |
|---|---|
| Manual slide open and close function | This function causes the sliding roof to open (or close) when the OPEN switch (or CLOSE switch) is pressed for a maximum of 0.3 seconds. The sliding roof stops as soon as the switch is released. |
| Auto slide open and close function | This function causes the sliding roof to reach the comfort stop position or fully open (or fully close) when the OPEN switch (or CLOSE switch) is pressed for a minimum of 0.3 seconds. |
| Manual tilt up and down function | This function causes the sliding roof to tilt up (or tilt down) when the UP switch (or DOWN switch) is pressed for a maximum of 0.3 seconds. The sliding roof stops as soon as switch is released. |
| Auto tilt up and down function | This function causes the sliding roof to fully tilt up (or tilt down) when the UP switch (or DOWN switch) is pressed for a minimum of 0.3 seconds. |
| Jam protection function | The jam protection function automatically stops the sliding roof and moves it open halfway (or fully tilt up) if foreign matter gets jammed in the sliding roof during close or tilt down operation. |
| Key-off operation function | The key-off operation function makes it possible to operate the sliding roof for approximately 43 seconds after the power switch is turned from on (IG) to off, if the front doors are not opened. |
| Key-linked function* | HINT: This function is linked with the power window key-linked function. |
| Wireless transmitter-linked function |
HINT: This function is linked with the power window wireless transmitter-linked function. |
| Sliding roof open warning function | When the power 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, a warning message appears on the multi-information display. |
- *: This function is set through the customize function, as it is off by default.
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the sliding roof system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Operation Check
OPERATION CHECK CHECK SLIDING ROOF NOTICE:
If the negative battery terminal is disconnected under the following conditions, initialization of the sliding roof drive gear sub-assembly may not be com
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE SLIDING ROOF SYSTEM HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function, first make sure that the function can be c
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Installation
INSTALLATION PROCEDURE 1. INSTALL REAR ENGINE OIL SEAL (a) Apply MP grease to the lip of a new rear engine oil seal. NOTICE:
Do not allow foreign matter to contact the lip of the rear engine oil seal.
Do not allow MP grease to contact the dust seal.
(b) Using SST and a hammer, tap in the
Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE:
Do not replace the spiral cable with the battery connected and the power switch on (IG).
Do not rotate the spiral cable when the following conditions are met: 1) The steering wheel is removed, 2) the battery is connected, and 3) thepower switch on (IG).
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