Question about 2002 Nissan Xterra

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My daughters at college and her Doors will not lock and engine will not start, I think the anti theft system has locked up..we need to know how to override it

This is on a 2002 Nissan Xterra... or, could it just be the battery?

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6ya6ya
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Posted on Jan 02, 2017

  • 383 Answers

SOURCE: Several months ago I began experiencing a

jimmy: it sounds like the drivers door unlock tamper switch or the other switch may have failed. One side can affect the other under certain circumstances. Your trunk lock also has a switch which arms and disarms the antitheft system. Try locking all the doors, make sure the hood and trunk lid are closed and then open the trunk. Leave it open open the drivers door and try to start the car.
If it's a no start. Disconnect the ground battery cable then put the ignition key in the run position in you ignition switch. Reconnect the battery and try to start the car. It should start. This usually will override the anti theft system. One issue with this will be, whether the antitheft system will remain disarmed.
Although I have never tried this before, I know that the system will not arm unless all the doors, trunk and the hood are closed.
I could suggest this to try if the car starts as I had told you pertaining to disconnecting the battery cable, I would take the switch and unbolt it from the passenger's side of the engine compartment just forward of the shock tower. Just let it sit somewhere so it doesn't get caught up in anything moving. If there is a light under the hood of your car, remove the bulb.
Let me know how you make out.

Posted on May 03, 2009

  • 7 Answers

SOURCE: 1995 Nissan Maxima alarm system

Hey, I bought my 1995 Nissan Maxima GLE brand new back in July 1994 with factory installed alarm, it just doen't make any sound when you arm or disarm it with remote. The only way you can tell whether it is armed or disarmed is from the lever position of your doors and the blinking red light under the dash. Only the newer versions of Nissan/Infiniti's has the "Audio/Silent" mode button on the remote which allows you to activate/deactivate you car alarm with an audiable sound or no sound at all. No worry, there is nothing wrong with your remote or car alarm.

Posted on Jun 27, 2009

morse008
  • 1111 Answers

SOURCE: My daughters Nissan Altima program keyless entry

could be someone on the same frequency as well ......not fully sure though

Posted on Sep 21, 2009

dnewcombe1
  • 1564 Answers

SOURCE: my 2007 Nissan Xterra doors locked on their own

Most likely you've got a timed lock programed into your menu parameters. You will have to go to your main vehicle instrumental menu and clear that option. This may have been inadvertantly done by one of the other operators of the vehicle.

Posted on Mar 05, 2010

  • 1 Answer

SOURCE: 1999 Nissan Maxima will not start up

there is a chip inside your car key
some times gets damage or the car computer gets damage and no longer recognize your key chip
this causes the anti theft system to prevent the fuel injectors to open and the engine will not start because has no gas.

the security light stain on is your hint of what is going on.

I had the same problem on a 99 Nissan Maxima but i got the car running again what you need to do is replace the engine computer and then call a locksmith to reprogram your key to be recognize by the new computer i when to a lot of pain and suffer to get this solve.

before changing any thing make sure the plastic part of the key is not broken, if it is call your locksmith to make you a new one before changing any thing.

NOTE do not use a computer from a salvage yard unless you get to see the actual car it came from

if it came from a car than has the body in one piece do not buy it

its real hard to diagnose this problem and

chances are it came there because of the same problem you have.

if the car looks like it was in a crash the computer is more likely to be good.

but its always best to get it rebuild or brand new if you can.
after you change the computer call the locksmith to get you car key reprogram.

Do not use a computer from a 98 or 2000 because they will not work no mater what the salvage yard tells you they are to make money not to help you so it has to be 99 only.

Posted on Jan 03, 2012

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2 Answers

How do I reset the ProLock system?


Hi Carol , do you mean PATS passive antitheft system ? Locked up your car ,do you mean it won't crank over an start ?
The passive anti-theft system uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user.
  • During each vehicle start sequence, the ignition key identification code is requested by the vehicle protection anti-theft electronics.
  • If the key's ID code has been programmed into the system, the powertrain control module (PCM) (12A650) is signaled to enable the vehicle to start.
  • If the key's ID code is not programmed into the system, or if no encoded key is detected, then the powertrain control module is signaled to disable the vehicle.
The passive anti-theft system communicates the state of the security system to the powertrain control module via the J-1850 communications network data link connector (DLC). The powertrain control modulebased on the communications from the passive anti-theft system, will determine if the vehicle's engine is enabled to start. The passive anti-theft system differs from the active anti-theft alarm system in that the passive anti-theft system enables/disables the vehicle from starting and only operates with the ignition switch in RUN/START position. The active anti-theft alarm system has perimeter protection capabilities and operates only with the ignition switch OFF. Refer to Section 13-11A for active anti-theft alarm system information.
Vehicle Disabling The passive anti-theft system will be activated and disable the vehicle from starting if any of the following conditions exist:
  • damaged encoded key
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  • wiring concern
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  • Powertrain Control Module (PCM)

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Lights were left on killed battery then anti-theft light came on and now the car wont start do we need to reset the compter?


should be able to call the dearlership to get a code to reset the antitheft system unless u know it

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1. Lock doors via key on Driver's door.2. Disconnect battery.3. Wait a couple minutes to let remaining voltage leak out of system.4. Reconnect battery.5. Unlock doors via key on Driver's door.

Oct 30, 2009 | Mercedes-Benz E320 Cars & Trucks

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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

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Does the 1994 320i come with an anti theft system.


you may find tha the locks need a good oil, and the pasenger sid as it dont get used , they may of both gon stiff and the micr switch tha sits next to the lock barrow is thinking its still locked .. my bmw used to lock me in wen a slamed the door

Apr 08, 2009 | 1994 BMW 3 Series

1 Answer

Several months ago I began experiencing a occasional problem with the anti-theft system of my 1992 Nissan Maxima SE 5 speed manual trans. Using my key I unlocked the drivers door and opened the door. The...


jimmy: it sounds like the drivers door unlock tamper switch or the other switch may have failed. One side can affect the other under certain circumstances. Your trunk lock also has a switch which arms and disarms the antitheft system. Try locking all the doors, make sure the hood and trunk lid are closed and then open the trunk. Leave it open open the drivers door and try to start the car.
If it's a no start. Disconnect the ground battery cable then put the ignition key in the run position in you ignition switch. Reconnect the battery and try to start the car. It should start. This usually will override the anti theft system. One issue with this will be, whether the antitheft system will remain disarmed.
Although I have never tried this before, I know that the system will not arm unless all the doors, trunk and the hood are closed.
I could suggest this to try if the car starts as I had told you pertaining to disconnecting the battery cable, I would take the switch and unbolt it from the passenger's side of the engine compartment just forward of the shock tower. Just let it sit somewhere so it doesn't get caught up in anything moving. If there is a light under the hood of your car, remove the bulb.
Let me know how you make out.

Mar 30, 2009 | 1992 Nissan Maxima

3 Answers

Engine will not start. We think it has to do with the anti-theft system


HI............
Check if the SECURITY LIGHT is Blinking or on.
Or off.
Let me know if you have replaced any electrical part.
Or if have replace the lock Cylinder.

I will try to help you.

Thank you.

Jul 24, 2008 | 2004 Chevrolet Express

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1996 ford explorer anti theft system


What you need to do it un lock you doors from the in side. so push lock and then un lock from the in side. Then you should have no problems.

Jul 09, 2008 | 1996 Ford Explorer

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the anti-theft is being set off. use the remote key fob to turn off alarm.

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