Open/Close Roof Switch will not even blink
#1
Driver
Thread Starter
Open/Close Roof Switch will not even blink
So i haven't used my top for awhile because it's been really hot in texas. I tried it for the first time today and I can't even get the open close swithc to blink red? I did a ecu reset by unplugging the battery for 30 minutes nothing. I check the fuses in the trunk and they were all good. I did install the VIas awhile back but I don't think it could be the temp control? I'm assuming if it wasn't plugged in all the way the AC and other functions would not work
#2
Driver School Candidate
Join Date: Sep 2014
Location: CA
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So i haven't used my top for awhile because it's been really hot in texas. I tried it for the first time today and I can't even get the open close swithc to blink red? I did a ecu reset by unplugging the battery for 30 minutes nothing. I check the fuses in the trunk and they were all good. I did install the VIas awhile back but I don't think it could be the temp control? I'm assuming if it wasn't plugged in all the way the AC and other functions would not work
#3
Driver
Thread Starter
#5
Driver
Thread Starter
Don't think it's any sensor because if there's something not in place then the red light would blink. I get no indicator lights at all. I"m thinking it's the fuse somewhere that is linked to the open/close switch. I checked the back trunk fuse box and all the fuse are good. It's worked before like with no issue. I've done some installation with the door speakers and installed some subs but that's it. My speakers work good and my sub works good.
#7
Driver
Thread Starter
Are you referencing the Valet switch? I checked it already but read on the forum even if it's locked or unlocked there should be a red indicating light. My climate control works. tested all the buttons for the AC functions to the emgerency light, The only button not working is the open/close button. I'm am lost I"m not even sure if Lexus dealershirp could help me. I'm crossing my fingers I"m unplugging my subs to see if that helps.
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#8
Driver
Thread Starter
I know the valet switch functions because when I click on it an try to open the trunk by pushing the button it still stay locked. Howver, when I click the valet switch to unlock and I push the trunk button my trunk opens.
#9
Lead Lap
Be sure to check the fuses in the cab as mentioned above. Lexus seemed to use multiple fuses in multiple locations for several functions. Don't rule it out just because other items in the area are working. (I'd go and look at mine but I don't have it with me right now.)
You're in Houston, right?
You're in Houston, right?
#10
Driver
Thread Starter
Be sure to check the fuses in the cab as mentioned above. Lexus seemed to use multiple fuses in multiple locations for several functions. Don't rule it out just because other items in the area are working. (I'd go and look at mine but I don't have it with me right now.)
You're in Houston, right?
You're in Houston, right?
#11
same issue here
2002 sc430 108k
I feel your frustration. My switch is doing the exact same thing. pulled all fuses, all are good. Is there a fuse behind the climate control panel? I ordered a roof ecu from ebay. it was 75 dollars. Should be here on Monday. Will try that and keep fingers crossed. If not then to dealer for diagnosis..
Any progress on yours?
good luck
I feel your frustration. My switch is doing the exact same thing. pulled all fuses, all are good. Is there a fuse behind the climate control panel? I ordered a roof ecu from ebay. it was 75 dollars. Should be here on Monday. Will try that and keep fingers crossed. If not then to dealer for diagnosis..
Any progress on yours?
good luck
#12
update on this mystery
I triple checked all fuses.. they are good. i then put the valet switch in the locked position. held the open button down. after 3 to 4 secs it began to blink blinked a number of times. then stopped.
I'm thinking maybe the ecu for the top does not know where it is in the cycle. taking battery off for 30 minutes then try it again. during that time I will get access to the ecu in the trunk.
Is their a way to have the system relearn where the top is?
Any help would be appreciated.
thank you
I'm thinking maybe the ecu for the top does not know where it is in the cycle. taking battery off for 30 minutes then try it again. during that time I will get access to the ecu in the trunk.
Is their a way to have the system relearn where the top is?
Any help would be appreciated.
thank you
#13
Driver
Thread Starter
I triple checked all fuses.. they are good. i then put the valet switch in the locked position. held the open button down. after 3 to 4 secs it began to blink blinked a number of times. then stopped.
I'm thinking maybe the ecu for the top does not know where it is in the cycle. taking battery off for 30 minutes then try it again. during that time I will get access to the ecu in the trunk.
Is their a way to have the system relearn where the top is?
Any help would be appreciated.
thank you
I'm thinking maybe the ecu for the top does not know where it is in the cycle. taking battery off for 30 minutes then try it again. during that time I will get access to the ecu in the trunk.
Is their a way to have the system relearn where the top is?
Any help would be appreciated.
thank you
#14
Have you checked to see if you have any voltage at the roof switch . The red light could be burned out or switch could be shorted or open bad harness somewhere. You may have to bite bullet and take to dealer for diagnosis.
#15
well it only did that weird blink thing once. waiting for the ecu. I can't reproduce it. the valet switch is fine. will keep you posted. I'd like to test the switch but can't get the climate control. out! yes I've read the posts on how to pull it. but she is stuck!!