Ford galaxy central locking locks with key but when you open it it then locks it self again any ideas what cause is

i have the ford galaxy a 99 diesel ,my problem was the wires in the rubber boot from body to tailgate ,, ,Just to make sure it doesnt lock itself up i fitted a pull wire from the lock to left side that i pull out with a length of wire , then pull the wire .. Most of the locking is controlled by the drivers side lock as is common with a lot of modern cars so you may need to replace this lock ,, its a sealed unit iam afraid so just replace it .like a lot of the electronics i am well known for by passing them like the immobilisor on the fuel pump ,that is all removed and wire straight to the shut off valve ,, Think its the door lock on your car is the problem BUT i could be wrong

you forgot to say FORD of EUROPE,
not one sold here USA> and no books either.
shorts to ground

ford galaxy central locking fuse Google Search

Most central locking systems are controlled by a electronic module of some kind . BCM - body control module . Different car manufactures call them by other names. ford - SJB smart junction box , Chrysler - BCM or TIPM - totally integrated power module . Well enough of that , these modules receive input signals from door sensors , The little light on the dash that shows a door is open , door ajar switch etc.... Do the doors lock again when opening any other door on the vehicle ? If not there could be a problem with the door ajar switch inside the drivers door . And most central locking systems are not suppose to let the doors lock with the key in the ignition . There may also be DTC's - diagnostic trouble codes stored in the BCM or what ever module your vehicle make calls it . I suggest you take you vehicle to a good local independent repair shop or dealer , that has a professional grade scan tool . Auto parts stores do not have a scan tool that can check BCM codes. Nor can a simple code reader . I suggest you watch this guy's videos . Not the same problem as yours but will give you some idea what can happen when sensor inputs act up . Door Locks Go Crazy 1 If you look at the door jam with the door open you'll see a rubber boot going from the door to the car body. There are wires in side . that go to the power windows an locks . B+ an ground wires etc.... From hundreds of times of opening an closing the door , wires can an will break sometime causing strange problems .

central locking working on vaccum system..trying getting it serviced..should sort out

i had a similar prob with my ford explorer, i took drivers door panel loose and sprayed all the contact switches with a non-combustible,plastic safe cleaner, let it dry, then sprayed with electrical lubricant also (non-combustible) hope this helps!!

shorted wiring in doors or shorted door lock actuator in door. A grounding of a wire makes them lock normally. SO, any bare wire touching metal will ground it and lock the doors.

Principles of Operations
The Door Switch Lock Function When a door lock switch is moved into the lock position or a door lock cylinder is rotated to the lock position, the door lock switch grounds the lock circuit input to the central security module (CSM). The CSM then provides 12 volts to one side of the door lock actuators contained in the door latch unit and simultaneously grounds the other side of the door lock actuators. This completes the door lock actuator circuit, causing the door lock actuators to rotate a cam assembly, which then locks the doors. The 12 volts that the CSM provides to the door lock actuators are provided to both door lock actuators from a single pin on the CSM electrical connector.
The Door Switch Unlock Function When a door lock switch is moved into the unlock position, the door lock switch grounds the unlock circuit input to the CSM. The CSM then provides 12 volts to the opposite side (relative to locking the door) of the door lock actuator(s) contained in the door latch unit and simultaneously grounds the other side of the door lock actuator(s). This completes the door lock actuator circuit, causing the door lock actuator(s) to rotate a cam assembly in the opposite direction, which the unlocks the door(s). The 12 volts which the CSM provides to the door lock actuator(s) are provided to each door lock actuator from the individual pins on the CSM electrical connector.
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CSM Self-Test The CSM has a self-test which can be entered into by using a diagnostic tool. This self-test will monitor the following CSM door lock inputs:

• Unlock switch (DTC B1311)
• Lock switch (DTC B1300)
• Exterior lock switch (DTC B1309)
• Exterior unlock switch (DTC B1341)

Before running the self-test, the following conditions must be met:

• The ignition switch must be in position II
• The driver and passenger doors must be unlocked
• The driver and passenger doors must be opened
• The hood and liftgate must be closed
• The set/reset switch, and liftgate release switch are not actuated

It is important to note that all of the diagnostic trouble codes (DTCs), with the exception of B1551 and B1553 can be retrieved with the self-test. DTCs B1551, and B1553 are continuous and will only be retrieved if the liftgate release is operated prior to retrieving the continuous DTCs.
Inspection and Verification

1. NOTE: Make sure that the battery is fully charged before starting electrical diagnosis.
   NOTE: Prior to carrying out the CSM Self-Test, make sure that both the driver and passenger doors are open.
   Verify the customer concern.

1. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart Mechanical Electrical

• Binding latch mechanisms
• Binding linkage
• Misaligned door

• Central junction box (CJB) fuse(s)
• Wiring harness
• Electrical connector(s)
• Door lock switch(es)
• Door lock actuator(s)

Module Controlled Functions
The central security module (CSM) covers the following functions:

• Central door locking
• Double door locking
• Anti - theft alarm incorporating
  • forced entry
  • radio theft
• Radio frequency remote control of
  • central door locking
  • panic alarm
  • driver door unlock
  • liftgate unlock

For additional information, refer to Section 419-01A Anti - Theft - Active, Section 501-14A Handles, Locks, Latches and Mechanisms, and Section 501-14B Keyless Entry/Computer Operated Locks.

The CSM is in the passenger side kick panel I think.

Good luck

I would look for bad fuse to start with. From what you say I am thinking it is the control buttons on the door.

This may be caused by a failing door solenoid. Try cycling it open/closed quickly several times with the key, if this improves it - it may be a sticky lock OR a failing solenoid, Try listening at each door in turn to see if you can hear a difference in locking noise.

hope this helps

central locking on my 93 corsa with standard key, not electronic type as used on later models, all doors are locked and refuse to open, ive checked fuse and thats ok, doors refuse to open from inside the vehicle and from outside, only the tailgate will open from the key, any ideas ,,, thanks dave