Question about 1990 Lexus LS 400

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How can i stop a atd killswitch in a from turning on when driverside doorlock doesnt work and only have 1 key to car and no alarm clicker either

Use passenger door to for key entry.tried to ground out alarm wires,priced rekeying from salvage yard,locksmith also seemes to high prce to take apart door lock said he can make a key but it wont function unless its chipped,drove it in 911 only cases and left unlocked,

Posted by abigail gluck on


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James Blair

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  • 103 Answers

Most car alarm and stereo installers may be able to help you. I took apart the driver's door lock on one vehicle, removed the tumblers and reassembled it but eventually someone messed with it and I was stuck

Posted on Jan 28, 2015


5 Related Answers


  • 16 Answers

SOURCE: After alarm goes off, all electrical works except car won't start

hi there
from what it sounds to me is that the alarm is still in anit theft mode
i had this happen to my vehicle

one thing you can try is lock all the doors try and unlock from the passenger side make sure that all the lock come up to the top where they should be
then try it

if that does not work then lift up the rear of the car like it was being towed and it should reset the alarm
short of that you will have to have alarm shop come to you

Posted on Mar 09, 2009



  • 496 Answers

SOURCE: The clicker will not lock or unlock the front

It sounds like your remote needs a new battery.
Your user manual should tell you what type... else, remove the old battery and find an equivalent.
Hope this helps... Good luck.

Posted on Oct 13, 2009


  • 166 Answers

SOURCE: 1990 lexus ls 400 security system went off now

Okay you may want to check to see if the sensor on door lock cylinder hasn't fallen off from the lock itself. Pull of the door panels and check the wires at the door lock cylinder. Hope this helps.

Posted on Mar 25, 2010

geoff hunter

  • 4793 Answers

SOURCE: car alarm went off while unlocking the door, now

you need to reset alarm/immobiliser.lock car with remote, hold button down for 30 secs,then press/hold down unlock button,should reset.another way is with key in ignition/turned on, press alarm button down and hold for 30 secs.this resets
systems vary..depending on market.

Posted on Mar 30, 2010

Michael Zellner

  • 518 Answers

SOURCE: I have a 2003 Lexus

A seized up door lock actuator. You can try freeing it up by spraying a good penetrating oil, my favorite is PB Blaster. If it wont free up you will need to replace it.

Posted on Jan 24, 2011

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1 Answer

Changed my battery in my 2006 dodge Durango, now the factory alarm lights keep flashing. Don't have key fob , just a regular key. Trying to stop the lights from flashing.

Not sure if this will work, but try this:
Open your car from the driverside door, if the alarm starts flashing, go to the passengerside door and use the key to unlock it. That should reset your factory alarm. GL

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I asked a frend about your problem and he said there isnt one, he said when you use the clicker, your moveing away from the car, so you get an audable sound to let you now it's working, when you use the key your at the car and you now whats happening.

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The factory car alarm on our 2003 Corolla will not let the car start. Tried changing batteries on controller. Tried different controllers. It flashes lights, beeps the horn, sounds alarm at times,...

Okay, lets first try something, go to the car and use the key to lock and then unlock the driver door, this should shut down the alarm, if it doesnt work then try pass/side door lock then unlock with the key, this should start the car, this factory alarm wired through the computers so you may be driving with alarm going you may need to unhook horn wire at front of grill, also this is important!!! are you sure the car battery is good, if the battery is low it would cause this problem, the alarm would go nuts because of low voltage, try jumping it if the key doesnt work, hook cables to it then use the clicker to disarm and try it, let me know what happens i would like to know, good luck and i hope this helps.

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I just purchased the vehicle and did a full tune up. Dismantled the alarm set up by the previous owner, but the vehicle has a factory installed alarm as well. It wont let the vehicle start up. The vehicle...

The first thing to do is make sure the battery is fully charged, next is the factory alarm, this alarm is controled by a clicker or can also be turned off by the door lock with the key, now sometimes the switch wears out on the driverside door and will not turn alarm off so try to lock and unlock the passenger door, also the other alarm you removed did you connect the power starter wire after removing. if you look at the steering column after removing covers and lower dash panel you will see wires going to ignition switch, this is where the main wirng for an alarm goes now i think its a yellow wire but you will see the wire cut in half that the way it disables the alarm then they conect to alarm you need to connect the cut wire back together, the two halfs of the wire will be the same color, after that if it doesnt start then we will need to test for power at the starter, have someone hold key in the crank position as if they are starting jeep while they hold key use a testlight to see if you are getting power to the small wire on the back of the starter, if theres power and engine is not spinning then replace the starter, these steps should get this jeep going. one of these is the problem , hope this is helpful, good luck.

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Replace clicker batteries leave them out and hit reset internal dot inside clicker !

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Key fab stopped working now emergency flashers continue to go off

Sounds like a problem with the computer, or alarm system,
A budy of mine had a similar problem with the locks, it turned out that the alarm clicker was shorting out..

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