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[Will]

Okay. Sounds good. Checked the voltmeter with a 9V battery and it reads 9.3V so I think it’s working okay.

First thing then is to check the battery… I’ll take it to a place where I can get it load tested and will be in touch.

Thanks!

[Will]

I ended up pulling the sunroof fuse and obviously (and thankfully) it has not opened. Unfortunately, I haven’t had time to open up the overhead console yet as I’ve been away on business and vacation, but I now have some more time to devote to this problem. I went away for a week and when I came back the car wouldn’t start. I put the voltmeter on the battery terminals and it read 9.5V. I jumped it and drove it for a week with no problems.

I recently returned from 9 days vacation (just a few hours ago) and the car didn’t respond to the key fob. I put the voltmeter on it and this time it read 3.3V.

Either the battery is wonky or I have a drain somewhere. The battery is a Lexus battery and is from 2011. Does this car have common problems with parasitic drain?

Any recommendations? Guess I’ll look at the battery first. I think I should fix this first before looking at the sunroof as I know these cars are finnicky with low voltages.

[Will]

I ended up pulling the sunroof fuse and obviously (and thankfully) it has not opened. Unfortunately, I haven’t had time to open up the overhead console yet as I’ve been away on business and vacation, but I now have some more time to devote to this problem. I went away for a week and when I came back the car wouldn’t start. I put the voltmeter on the battery terminals and it read 9.5V. I jumped it and drove it for a week with no problems.

I recently returned from 9 days vacation (just a few hours ago) and the car didn’t respond to the key fob. I put the voltmeter on it and this time it read 3.3V.

Either the battery is wonky or I have a drain somewhere. The battery is a Lexus battery and is from 2011. Does this car have common problems with parasitic drain?

Any recommendations? Guess I’ll look at the battery first. I think I should fix this first before looking at the sunroof as I know these cars are finnicky with low voltages.

[Will]

Thanks for helping me out.

The “switch” looks something like a small green printed circuit board, that is attached by a small flat flexible wire to an other connector closer to the ECU for the overhead console.

If I understand correctly (I’m new to this):

1) Pull the switch out.
2) Put the fuse back in.
3) Bypass the switch by jumping two of the wires on the flat connector.

I’ll take pictures of what it looks like today or tomorrow when I get time.

Thanks again!

[Will]

Thanks for helping me out.

The “switch” looks something like a small green printed circuit board, that is attached by a small flat flexible wire to an other connector closer to the ECU for the overhead console.

If I understand correctly (I’m new to this):

1) Pull the switch out.
2) Put the fuse back in.
3) Bypass the switch by jumping two of the wires on the flat connector.

I’ll take pictures of what it looks like today or tomorrow when I get time.

Thanks again!

[Author]

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