Question about Lexus Cars & Trucks

1 Answer

Why would the anti-theft alarm go off?

For the first time since owning my 2001 Lexus RX300, bought new, the anti-theft alarm went off tonight around 10:00 pm...no one around car. Car parked in drive way. Wireless key will not turn the alarm off, unless I press "PANIC" button. Could the battery in the "key" need to be replaced?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Lexus Expert
  • 180 Answers

Factory alarms rarely false alert, maybe someone did tamper with the car and ran off before you saw him. The one thing that will often trip alarms is a bad battery in the car, have it tested. Your car may have an add-on alarm in which case anything goofy can happen. It's odd that you had to hit the panic button to shut the alarm off, but if it functions normally otherwise it's unlikely to need a new battery. Is it at all possible that you hit the panic button and that caused the alarm to sound? If it was in your purse or pocket maybe it got pressed in which case it might be normal for you to have to hit panic again to turn it off.

Posted on Jun 15, 2015

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: 98 celica battery went dead replaced now it want crank

Try this: Unhook the battery. Reconnect the battery. When the horn starts to beep, cycle the ignition key in the ignition on-off 5 times. This resets the alarm; the cycling of the key. Please advise me if this works for you.

Posted on Oct 07, 2008

  • 23 Answers

SOURCE: Anti theft alarm going on and off after replacing battery.

u can try to put key in drivers door lock & un lock it manually some times this will work

Posted on Dec 24, 2008

  • 3 Answers

SOURCE: How can I bypass a anti auto theft system on my 1990 cadillac seville?

I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer

Posted on Dec 25, 2008

lnwolf33
  • 14 Answers

SOURCE: cannot disable anti theft alarm driving neighbours mad

There should be a relay under the hood for the security system, if you can not find it, try jacking the front of the car up, it should have a sensor that tells it that it is being towed and should turn off, unless of course it has a bad wire that is grounding out.

Posted on Jan 28, 2009

alicantecoli
  • 22095 Answers

SOURCE: How to reset anti theft in 97 Eclipse

dealer only

Posted on Feb 13, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What is causing the anti-theft alarm light flashing/horn blowing go off?


the remote key would be the easiest (and cheapest) thing to try first but i don't think that a low battery in the fob would activate the alarm randomly , i'd get the OBD codes read as will point to which part of the anti theft/central locking system is causing the issue

Apr 07, 2015 | Lexus RX 300 Cars & Trucks

1 Answer

Anti-theft switched off my starter...how do bypass that issue?


Depending what part of the country this car was purchased originally, the alarm system can be different. These are after market systems installed by the distributor or dealership. Different systems are connected differently. Either way the alarm system is connected to the engine controller and or the main electrical circuit. This has to be removed and the circuit reconnected. I would advise taking to a car alarm specialist and have them replace or remove it.

Feb 12, 2014 | Lexus LS 400 Cars & Trucks

1 Answer

I got locked INSIDE my 2001 Lexus LX470 today. I


This is the anti theft function working as it should. Your husband needed to override it with the key. The command told the car to lock down. Because the key was not in the car the anti theft set off the alarm and locked down the engine as well.
This is exactly what you would want the car to do if you left it locked on the street with your windows down while shopping. Otherwise someone could reach in the window, unlock the door, slide in and start hot wiring the car.
These lock functions are programmable and can be changed at the dealership.

Dec 06, 2009 | 2001 Lexus LX 470

1 Answer

1989 300e. The anti theft alarm went off while driving the car now the engine won't start. We shut the car off and locked and unlucked the doors several times. The alarm reset and we began driving again. A...


This is the problem due to your anti theft alarm system. You have not mentioned which brand of anti-theft alarm system you have? Anyhow, most of the systems have a reset switch inside the kit, open the kit and on the main board, u will find the reset button, press that and hold for 5 sec, the system will be reset. Otherwise, there are 2 or 3 fuses with the wiring of kit, remove those fuses and ur engine will wake up but the anti-theft system wont work then, hope this will solve the problem

Sep 19, 2009 | 1989 Mercedes-Benz 300-Class

3 Answers

? to Replace Timing belt on 2000 Lexus Rx300 with 57,000 miles.


If it is running perfectly I wouldn't think that you would need to replace the timing belt. You shouldn't need to replace that until 100,000-120,000 miles. I would definitely hold off until now unless you have start having some timing problems. Let me know if you have any other questions. Thanks for rating my response and for using FixYa!

Jul 08, 2009 | 2001 Lexus RX 300

1 Answer

Car


Your keys are prob. worn. My car did the same thing until i got very expensive new keys made.

May 14, 2009 | 1990 Lexus LS 400

2 Answers

Trying to program remote key for 01 lexus rx300


Hi Are these instructions applicable to a 2006 RX300? I would be grateful for any help. Many thanks, Ben

Jan 25, 2009 | 2001 Lexus RX 300

1 Answer

Car want start


yes cut the power to it

Jan 03, 2009 | 2001 Ford Focus

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

237 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lexus Experts

yadayada
yadayada

Level 3 Expert

75066 Answers

ROBERT GARCIA
ROBERT GARCIA

Level 3 Expert

874 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...