I have an issue with the factory alarm going off randomly on my 13 LX570. It’s been to the dealer twice and their best guess is the hood latch sensor after the second visit. They recommend replacing the whole latch assembly. I’d rather not have them do it, and I’d rather not do it myself if I can avoid it.
On a past vehicle I’ve jumped the wires so the alarm thinks the hood is always closed even if it’s not. Does anyone know how to go about that on the Lexus. Wiring diagram or something. I couldn’t care less about the hood alarm. I know it’s not the doors as I replaced every sensor with an OEM Toyota part. Haha
I had the same issue with my 2013 LC 200 Diesel. I went down the same route with the hood latch. For me it was actually a few moths or other flying critters that set the alarm off. The cabin sensor is very sensitive. You can try to turn off the cabin sensor with a button in the ceiling close to the interior light. If the alarm then does not go off you might have the same issue as I had. I ran out in my underwear to see why the alarm went off a few times, and saw a moth in the car every time. Just a tip.. Can easily be the hood sensor as well of course, but easy to eliminate the cabin sensor by turning it off for a few nights and see if that helps. Just press the button after shutting down the car and before arming the alarm.
Zero indication it’s been modified in any way. No other electrical issues at all. It was a cream puff when we got it with only one owner and mostly dealer service.
My factory alarm on my 2013 LC200 started randomly going off in the middle of the night, neighbors loved it . Has anyone else had this issue? I check all the doors and they are locking fine, checked the key fob, good too.
One thing I found is that if I open the hood, leave it unlatched, then lock the doors like normal the alarm doesn't go off. I'm thinking it might be the switch in the hood latch. Any thoughts?
Also, anyone on here ever removed their hood latch/lock? Doesn't look like the removal process is the normal remove grill and then 3 bolts I have seen on other...
My factory alarm on my 2013 LC200 started randomly going off in the middle of the night, neighbors loved it . Has anyone else had this issue? I check all the doors and they are locking fine, checked the key fob, good too.
One thing I found is that if I open the hood, leave it unlatched, then lock the doors like normal the alarm doesn't go off. I'm thinking it might be the switch in the hood latch. Any thoughts?
Also, anyone on here ever removed their hood latch/lock? Doesn't look like the removal process is the normal remove grill and then 3 bolts I have seen on other...
Thanks! I checked that thread first and was hoping to find the answer there, but alas. Good troubleshooting there for sure. Unfortunately no indication of an alarm.
Interesting. I didn’t know that was a thing on the LX. Good to know. I think it goes off even when it’s been dry for a long time, but mostly I just quit locking it. It’s supposed to rain hard later today, so I’ll check. Thanks!
. Has anyone else had this issue? I check all the doors and they are locking fine, checked the key fob, good too.