disable alarm - ClubLexus - Lexus Forum Discussion

Notices
Performance & Maintenance Engine, forced induction, intakes, exhausts, torque converters, transmissions, etc.

disable alarm

Old 06-26-17, 07:27 PM
  #1  
mlee934
Driver School Candidate
Thread Starter
 
Join Date: Jun 2017
Location: CA
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default disable alarm

92 300SC.
Alarms when driver door opened with key. Remote not working.
Will not start now.
How can alarm be disabled?

Last edited by mlee934; 06-26-17 at 07:30 PM. Reason: Added
mlee934 is offline  
Old 06-27-17, 11:40 PM
  #2  
t2d2
Lexus Champion
iTrader: (8)
 
t2d2's Avatar
 
Join Date: Apr 2014
Location: Location: Location!
Posts: 3,841
Thanked 36 Times in 35 Posts
Default

I haven't read of anyone figuring out how to disable the factory alarm, but the alarm going off when opening the drivers door is a somewhat common problem:

https://www.clublexus.com/forums/lex...e-doesn-t.html

As I recall, if you put the key in the ignition when the alarm is going off, that triggers the kill switch and you can't start it. Pretty dumb safety net, if you ask me. Disconnect the battery and reconnect it to reset the system.
t2d2 is offline  
Old 07-16-18, 08:05 PM
  #3  
LexusGek
Driver School Candidate
 
Join Date: Jul 2018
Location: FL
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default I had the same Problem Similar with my Rx330 2006

Hello people who are having this problem to or you might be having this problem. I had a bad battery for a long time I just got a new one a couple months ago. When I had this problem occur I finally figured out you have to put the key in the ignition and turn it and the car alarm will not go off.
I hope that works for you

blessings

LexusGek is offline  
Old 09-23-18, 09:22 AM
  #4  
t2d2
Lexus Champion
iTrader: (8)
 
t2d2's Avatar
 
Join Date: Apr 2014
Location: Location: Location!
Posts: 3,841
Thanked 36 Times in 35 Posts
Default

Originally Posted by LexusGek View Post
I had a bad battery for a long time I just got a new one a couple months ago. When I had this problem occur I finally figured out you have to put the key in the ignition and turn it and the car alarm will not go off.
I hope that works for you
If you do that with a SC300/400, you activate the kill switch. I made that mistake the day I bought my first SC... I guess Lexus thought it's easier to hotwire an ignition than it is to jimmy a door lock?
t2d2 is offline  
Old 01-08-19, 09:55 AM
  #5  
Lutherus
Driver School Candidate
 
Join Date: Jan 2019
Location: BC
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
Default

This happened to my 95 sc300 car wouldn't start after I put key in ignition and alarm stopped. Used key to lock and unlock PASSENGER door three times I think this resets alarm car started fine.
Lutherus is offline  
Old 01-08-19, 04:08 PM
  #6  
t2d2
Lexus Champion
iTrader: (8)
 
t2d2's Avatar
 
Join Date: Apr 2014
Location: Location: Location!
Posts: 3,841
Thanked 36 Times in 35 Posts
Default

Originally Posted by Lutherus View Post
This happened to my 95 sc300 car wouldn't start after I put key in ignition and alarm stopped. Used key to lock and unlock PASSENGER door three times I think this resets alarm car started fine.
Both doors work the same in the sense that unlocking them shuts off the alarm if it's sounding, or prevents it from sounding in the first place. The problem arises when the lock sensors stop picking up that the key has turned the cylinder. That's more likely to happen on the driver's door because of how much more it gets used, so the passenger door becomes the lifeline until you replace the bad sensor.

It's Lexus' intent that putting the key in the ignition to silence the alarm activates the immobilizer. Why, I have no idea. Common sense would tell you the door sensor was dysfunctional and the presence of a key in the ignition should be proof enough that it wasn't a break-in... Maybe they thought hot wiring is easier than picking a lock? At any rate, I hadn't heard that locking & unlocking one of the doors three times resets that. I thought the only option at that point is to disconnect the battery. I wish I knew that on Day 1 of owning my first SC, when I was stuck in the bank parking lot with a blaring alarm and no tools on hand to try the battery reset...
t2d2 is offline  
Old 01-10-19, 06:48 AM
  #7  
logix7
Driver
 
logix7's Avatar
 
Join Date: Mar 2017
Location: il
Posts: 181
Thanked 24 Times in 19 Posts
Default

logix7 is online now  
Old 01-12-19, 01:06 AM
  #8  
t2d2
Lexus Champion
iTrader: (8)
 
t2d2's Avatar
 
Join Date: Apr 2014
Location: Location: Location!
Posts: 3,841
Thanked 36 Times in 35 Posts
Default

Whoa, I didn't scroll up when replying a few days ago. At least I was consistent in my responses 3 months apart!
t2d2 is offline  


Thread Tools
Search this Thread
Quick Reply: disable alarm


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: