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The Techstream cable I mentioned would be the better investment. Not only can it read the trouble codes, but it also allows you to customize some features of your Lexus.
Do both windows roll down? If for some reason they are damaged and won't roll down, that would inhibit the top drop feature. Secondly, the tonnaeu cover sensor can be "jumped," to make sure that it is not faulty. In the trunk only one side (driver) has this sensor. You can remove it and just disconnect the harness and connect both wires to give a constant loop to the control the sensor as if the cover were in place.That would tell you that this switch is bad. Theoretically, you can do the same thing with the valet switch in the glove box to test if that switch is defective.
Do both windows roll down? If for some reason they are damaged and won't roll down, that would inhibit the top drop feature. Secondly, the tonnaeu cover sensor can be "jumped," to make sure that it is not faulty. In the trunk only one side (driver) has this sensor. You can remove it and just disconnect the harness and connect both wires to give a constant loop to the control the sensor as if the cover were in place.That would tell you that this switch is bad. Theoretically, you can do the same thing with the valet switch in the glove box to test if that switch is defective.
Thanks for the tips. Both windows do roll down. The valet switch appears to override the trunk switch, so is it safe to assume thats not the issue?
These pages may help...the blinking light means the conditions have not been met to operate the roof.
If it were me, the first place I would check is the trunk cover micro switch.
Thank You. You guys have all been very helpful. I will have some time this week to really dig into this issue, I will update once I have more information.
Thank You. You guys have all been very helpful. I will have some time this week to really dig into this issue, I will update once I have more information.
You mentioned in your first post that it only blinks four times, I tried mine today with trunk cover rolled up and I stopped counting the blinks at 30...
I will look through the manual and hope the four blinks actually mean something.
BTW, here is a stupid question...has the battery ever been disconnected Or replaced after this problem showed up?
If not, disconnect it for 5-10 minutes...
11-23-15, 09:35 AM
