Question about 2002 Chrysler PT Cruiser

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2003 Cruiser - my car doors just unlock even when there is no key in the ignition. Also it randomly keeps unlocking and locking when i'm driving. Any advice? I have called the Chrysler dealers and they are fluffing for lots of money just to check what the problem is!

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My 2003 Cruiser started doing this, randomly and rapidly cycling the locks. Believe it or not, the dealer said it was a bad battery. Considering the problem started halfway through a long road trip, I thought the guy was smoking something, but by george, replacing the battery cured the problem.

Posted on Aug 02, 2013

  • Nancy Torbett
    Nancy Torbett Nov 07, 2013

    Replaced battery, and mine still does it.

  • notAnn Apr 16, 2014

    I'm sorry my solution didn't work. The auto lock mechanism is under the dashboard right at the top, so I think it'll be a bear if that's what's going bad. Did you try Arnold's method (below)?

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Sounds like one of the door lock switches is shorting. If possible, disconnect the drivers' side door lock switch first and see if the problem continues. For a problem like this (out of warranty), and reputable repair shop would be less expensive than a dealership.

Posted on Jun 25, 2009

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Dec 20, 2015 | Cars & Trucks

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My automatic door locks on my 96 grand Cherokee keep randomly locking and unlocking almost constantly while driving down the road, even while the car is stopped and the key is out of the ignition.


could be a weak switch , hold it down or off while driving and see if it stops if it does this switch is bad do it to them all till you find the right one , or you have a short in a wire but I think it is the latter , good luck

May 04, 2014 | Cars & Trucks

1 Answer

Locks unlock and lock constantly


With factory controls the door locks get there signal from the body control module and can be set to lock every time the car gets above 15 mph if a door jam switch has a intermittent connection failure this could cause the door locks to cycle at will.
With a aftermarket alarm most lock and unlock with the key cycle and loose grounds can make these modules cycle the locks at will also.

Nov 07, 2013 | 2003 Chrysler PT Cruiser

1 Answer

Programming keyless entry to 95 landcruiser


1. Start with key out of ignition, drivers door is open all others closed and
drivers door is unlocked.

2. Insert key into the ignition (Do NOT Turn) and Pull key out.
3. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Close, then open drivers door.

4. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Insert the key in the ignition cylinder.
C. Turn the ignition to ON (Do NOT Start) then back to OFF.
D. Remove the key from the ignition.

5. Within 3 seconds the power door locks should cycle automatically indicating successful
entry into programming mode. Return to step 1 if the locks do not cycle at this point.

6. Perform these steps within 40 seconds.
A. Press the lock and unlock buttons on the remote simultaneously for 1 second.
B. Immediately after letting go of the lock and unlock buttons, press the lock button by
itself and hold for 2 seconds. Within 3 seconds, the door locks should cycle once
indicating successful programming. If the door locks do not cycle, or cycle twice.
repeat steps A and B in step 6 as your remote has not been accepted.
C. Repeat steps A and B in step 6 for each new remote.

7. Close drivers door.

Oct 29, 2013 | 2008 Toyota Land Cruiser

1 Answer

Immobilizer light will not go off when key inserted, Lock smith said my computer was not responding, Toyota wants to replace computer but that's 1200 bucks and I want to make sure that this will fix the...


YOU MUST HAVE MASTER KEY:
1. Start with key out of ignition, drivers door is open all others closed and
drivers door is unlocked.

2. Insert key into the ignition (Do NOT Turn) and Pull key out.
3. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Close, then open drivers door.

4. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Insert the key in the ignition cylinder.
C. Turn the ignition to ON (Do NOT Start) then back to OFF.
D. Remove the key from the ignition.

5. Within 3 seconds the power door locks should cycle automatically indicating successful
entry into programming mode. Return to step 1 if the locks do not cycle at this point.

6. Perform these steps within 40 seconds.
A. Press the lock and unlock buttons on the remote simultaneously for 1 second.
B. Immediately after letting go of the lock and unlock buttons, press the lock button by
itself and hold for 2 seconds. Within 3 seconds, the door locks should cycle once
indicating successful programming. If the door locks do not cycle, or cycle twice.
repeat steps A and B in step 6 as your remote has not been accepted.
C. Repeat steps A and B in step 6 for each new remote.

7. Close drivers door.

Sep 18, 2013 | 2001 Toyota Land Cruiser

2 Answers

I have a 2003 PT LImited. The door locks intermittantly lock-unlock lock-ulock, lock-unlock several times regardless of speed, it happens while idling, driving forward, and backing up. About a year ago...


The RKEM (remote keyless entry module) is the problem.
Only a DRB-III scanner can program the transmitter codes and VIN number to remedy this problem....I hope this helps.

Aug 19, 2011 | 2003 Chrysler PT Cruiser

1 Answer

Lost remote and like to program new remote. HELP. 2000 prado vx.


1. Start with the following conditions: you are in the vehicle a. Key is out of the ignition
b. Drive door is open ( all other doors are closed)
c. Driver door is unlocked (other door locks don't matter)

2. Insert the key into the ignition (don't turn it) and pull it out.
3. Perform these steps within 40 seconds: a. Cycle the power locks 5 times. Use an even pace and try
to go relatively fast.
b. Close, then open the drivers door.
4. Perform these steps within 40 seconds: a. Cycle the power locks 5 times (same as before).
b. Turn the ignition to ON then back to OFF.
c. Turn the ignition to ON then back to OFF.
d. Remove the key from the ignition.

5. Within 3 seconds, the power door locks should cycle (automatically)
indicating successful entry into programming mode. Return to step 1
if the locks do not cycle at this point.

6. Perform these steps within 40 seconds: a. Press the LOCK and UNLOCK buttons on the transmitter
simultaneously for 1 second.
b. Immediately after letting go of the lock and unlock buttons,
press the lock button by itself and hold for 2 seconds.
Within 3 seconds, the door locks should cycle ( LOCK then
UNLOCK) once-- indicating successful programming. If
the door locks don't cycle, or cycle twice. Repeat steps
6a and 6b--this remote has not been accepted.
c. Repeat steps 6a and 6b for EACH transmitter that will
operate the vehicle. Including any old transmitters.

7. Close the driver door.
Good luck and hope this helps.

Nov 04, 2009 | 2000 Toyota Land Cruiser

3 Answers

CHevy cobalt door locks- lock and unlock while I am driving had key fob reprogrammed and it was ok for about two hours and started all over again. What can the problem be?


Could be a problem in the shiftier. Your car doors lock automatically when you put the car in drive. They unlock when you put the car in park. The switch located in the shiftier can go bad causing the locks to randomly lock and unlock. Also, this can cause the key to get stuck in the ignition.

Oct 20, 2009 | 2005 Chevrolet Cobalt

1 Answer

Dodge Grand Caravan 2003 door unlock by itself


I never thought about this before, it may be normal on some vehicles. I have been able to lock/unlock my 2003 without the key in ignition since it was new.

Aug 24, 2009 | 2003 Dodge Grand Caravan AWD

1 Answer

My 2003 Honda Pilot locks by itself.


This is something that happens to me on the same car - if you use the fob to unlock the door, ti will lock automatically in about 20 seconds if you do not pull an outside handle to open the door - it is part of the security system - I have not found a solution other than one similar to yours - a "dumb" key in my wallet to unlock the door when it happens

Jun 08, 2009 | 2003 Honda Pilot

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