Question about 2003 BMW 5 Series

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Pass door lock

The door lock system will not unlock the pass door, all the rest work normally . This makes the pass, front door impossible to open . I tried to pull the lock rod up and pull the handle to open,inside and out . I do not know if I can pull off the interior door panel with the door shut . Any ideas ? Please sent a reply to rwkaufman@shaw.ca . Thank You . R.

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Pull the door panel and verify that the link rod for the door lock is connected to the door lock/unlock actuator, if it is cycle the locks, if nothing happens replace the lock actuator.

Posted on Aug 18, 2008

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Why does my 2004 Chevy Silverado lock and unlock while in drive? When turned off and no keys in ignition the drivers door will unlock on its own a short time later.


Gremlins ! HA HA HA sorry ! First off a little bit on how they work an what all is involved in making them work ! There are a few control modules in the mix , switches ,relays etc...
Door Lock System Components
The power door lock system consists of the following components:
?€¢
The driver door module (DDM)

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The passenger door module (PDM)

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The body control module (BCM)

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The driver information center (DIC)

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The door lock relay

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Door Lock System Controls
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?€¢
A power door lock or unlock switch activation

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A keyless entry transmission

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An automatic door lock function

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A delay lock function

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The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
?€¢
The DDM (driver door lock actuator).

?€¢
The PDM (passenger front door lock actuator).

?€¢
The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
The first place to start is have a factory or equivalent scan tool hooked up , one that can read BCM DTC'S - diagnostic trouble codes ! This could lead to a fix faster ! Watch these three videos !
Door Locks Go Crazy 1

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    1 Answer

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    YOU NEED A DRIVERS DOOR LATCH THEY BIND UP CAUSING IT DIFFICULT TO UNLOCK THE DOOR AND ALSO THE SCRES BACK OUT OF THE LATCH SOMETIMES CAUSING THE MAKING THE DOOR IMPOSSIBLE TO OPEN

    Jan 14, 2011 | 2005 Kia Optima

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    MY EXPLORER FRONT DOOR DOESN'T SEEM TO HAVE ANY PROBLEMS OTHER THAN IT DOESN'T SEEM TO WORK WITH ANY OF THE REST OF THE LOCKING SYSTEM. EVERYTHING WORKS BUT ONLY WITH THE KEY. I'VE CHECKED THE ACUATER AND...


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    1 Answer

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