Auto Up / Down Function does not Operate: Description

If the auto up/down function does not operate, the cause may be one or more of the following:

• The ECU in the back door power window regulator motor determines that the back door power window regulator motor has not been initialized.
• The rear back door power window regulator switch has a malfunction.
• The Hall IC in the back door power window regulator motor has a malfunction.
• There is an open or short in the wiring between the back door power window regulator switch and back door power window regulator motor.