Question about 1997 Jeep Grand Cherokee

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Electric door locks

I can hear the solenoid switch when I activate the keyless door lock but the back doors do not lock

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If you can see the lock (manual buttons) attempting to move, just spray the door latches with wd40 really well. I even open up the door panels abt once a year and just give a squirt into the rubber boots on the solenoids. These tend to rust and bind more because the rear doors are generally used less than are the fronts!

Posted on Jan 03, 2009

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Mervia. Why is central locking not locking any door?


It's only an educated guess. If all other locks switches are working it' either the switch panel itself or an electrical short. Switches are popular, get it checked first

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How do you reset the alarm system on a 98 olds silhouette after it triggers without the remote entry


Theft Deterrent Arm/Disarm Modes
Important: Although mode 2 provides increased security, the content theft deterrent system disarms only by pressing unlock on the keyless entry transmitter. This can pose a problem if the keyless entry transmitter is damaged, lost, or inoperative for any reason while you attempt to disarm the content theft deterrent system.
Mode 1: The system arms when you lock the doors with the keyless entry transmitter. The system disarms when you unlock the left front, right front, or liftgate door with the key or the keyless entry transmitter. The system does not arm when you lock the doors with a power door lock switch.

Mode 2: The system arms when you lock the doors with the keyless entry transmitter. The system disarms when you unlock the doors with the keyless entry transmitter. The system does not disarm when you unlock the doors with the key.

Mode 3: The system arms when you lock the doors using a power door lock switch or the keyless entry transmitter. The system disarms when you unlock the left front, right front, or liftgate door with the key or the keyless entry transmitter.
Changing the Feature Customization Modes
  1. Turn off the IP dimmer switch.
  2. Turn the ignition switch to the LOCK position.
  3. Remove the BCM PRGRM fuse.
  4. Turn the ignition switch to the ACC position. The BCM flashes the fasten belts indicator and sounds the chime 4 times, which indicates that BCM type 4 is installed on the vehicle. At this point, the BCM has entered the feature customization mode.
  5. In order to change the theft deterrent/shock sensor mode, turn the headlamp switch from OFF to PARK and back to OFF.
  6. The BCM flashes the fasten belts indicator and sounds the chime a number of times equivalent to the theft deterrent/shock sensor mode. A transition past mode 4 repeats the sequence starting with mode 1.
  7. Complete the following steps in order to change the theft deterrent arm/disarm mode:
6.1.
Insert the key in the left front, right front, or liftgate door lock cylinder.


6.2.
Rotate the key from the center to the unlock position.


6.3.
Press the horn button on the remote keyless entry transmitter.


6.4.
Count the number of chimes that you hear. The number of chimes tells you which mode you have set.


6.5.
Press the horn button again in order to change the mode. Continue to press the button until you hear the number of chimes that indicates the mode that you want.


6.6.
Turn the key back to the center position and remove the key from the door key cylinder.

In order to exit and save the current feature customization modes use the following procedure:

  1. Turn the ignition switch to the LOCK position.
  2. Reinstall the BCM PRGRM fuse.
If you are unable to change locking modes Theft Deterrent System Feature Customization Inoperative

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1 Answer

Acura TL2005 driver door won't open with the keyless .


Does it lock or unlock with the switch inside? When you try the keyless do you hear any noises from inside the door?

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No electric power to left door Fuse and relay are good


Check the wire lume that runs from the body to the door inside a rubber bellow. the wires can break from constant moving and I'm not sure what vehicle you have, but this is a defect for a few vehicles out there the wire can be to short in some cases from cost saving manufacturing. It may be necessary to remove the door panel and remove the harness through the wire opening to be able to move the boot far enough to access the broken wire or even just to check it in some cases.
How I like to repair it, is to put a new wire through the entire pivot point and join it inside the door and body where the wire does not move constantly.

Hope this helps

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What is wrong with my hummer H3 locks. Neither the keyless remote nor the lock button from the door can open all the passenger doors. When I press the Keyless remote or the door lock button, it open the...


Check the relays in the fuse box. It appears that the solenoids for locking the doors are working correctly. However it appears that the lock solenoid is not working properly.

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My 2000 Ford Explorer drivers side door will not unlock with the key fob, the number strip on the door, or with the key in the key slot. All the other doors will unlock using the key fob. What is th


Not sure if lock has solenoid or electric motor, but either way, can you hear clicks or any prominent sounds from the door whilst trying to unlock it? you may need to put your ear on the door, if no sound, then wiring needs to be checked, then motor or solenoid, if you do hear similar sounds to the other door then the mechanical part of the lock mechanism has failed and may require a kit or replacement.

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1 Answer

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All doors? Check the fuse...see owner's manual for info. Also verify that it is the vehicle's lock switches...or the keyless entry fob. If it is a single door, this can be a tricky difficult ordeal to find the "source" of the problem.
The difficulty is due to the fact that the negative/positive wires reverse polarity at door lock relays each time the lock is electrically exercised. The locks are activated by an electromagnet solenoid, which reverse when the supply current reverses polarity. For example, you may be able to lock a door with the switch then not be able to unlock it...or vice versa. If one of the wires has a fault, and the door locked [or unlocked], the relay was also "tripped/switched" with the "good" wire. When that happened, the relay effectively reversed the wire polarities...meaning that the faulty wire cannot energize the relay/solenoid to activate the lock-unlocking mechanism to reverse the process..

Simply, put...this is not likely a do-it-yourself fix, unless you have fair DC electrical skills, and a shop manual with complete wiring diagrams. The problem could be a poor wire connection, a broken wire, a faulty relay, a faulty solenoid, or a combination of these...or even a physical fault in the mechanical linkage for the lock.

If your vehicle has a locking lifting hatch back...and this is the "door" that won't operate, this can be very aggravating as there is no manual override, without removing the door/hatch trim and manually moving the linkage.

Hopefully it is the fuse.....good luck.

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That noise is due to a failed door lock actuator. This is the electrical device located behind the door panel that is responsible for popping the lock when you press the button. Door lock actuator replacement will eliminate the noise and bring it back to normal operation.

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lock solenoid is either bad or disconnected.
to check -- open the door and when you press the door lock button, can you hear the solenoid popping ?? if you hear the solenoid popping then the linkage most likely has a broken clip and needs to be re-attached using a new clip. but if you do not hear the solenoid then the problem is either a bad solenoid, a loose wire or a bad door lock switch. if you remove the door panel - use a volt meter to check for voltage and trace the problem.

c...

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