Door locks I have recently purchased a 2004 Echo. It has power door locks. The driver's side door and passenger front door sometimes do not unlock from the inside however, if I roll the window down they are unlocked from the outside. The driver's back door will not open from the inside only the outside. I have determined that this is a problem with the child safety lock. However, I can't seem to unlock the child safety aspect of the door. Do I need to take it in to the dealer or is this some easy fix? Otherwise, the car is wonderful!
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Re: door locks
Regarding the rear door child locks: There is a small lever on the latch side of the door, you can only see it with the door open. Move it to the other position.
Regarding the front door locks: You either have a bad door lock switch, or the power lock solenoids are beginning to fail. To check this, you will need to pull the door panels off, & measure the actual voltage at the solenoids whilst manipulating the lock switch. If you have 12 + VDC, I would suggest replacing the door lock solenoids. Not hard to change, but it IS time consuming. Best left to a dealer. Expect to pay 1 hour per side to change each solenoid.
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Nope, theres nothing under the car wires run along the inside of the doors under the carpet, about your door locks, the drivers controls the lock/unlock make sure you have so the passengers can unlock, also check your child lock lever on the rear doors , make sure those are move in the right position, if you got the child safety on sometime the driver piwer swutch wont open it, make sure your courtesy light is not all the way off, the Dimmer, it controls the instrument panel lights, FUSE FOR THE COURTESY, i belive is conected to the door lights, halo on your key or light, glove box light, and your dome light's. Hope this helps, CHECK FUSES WITH METER OR TEST LIGHT.
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)
The passenger door module (PDM)
The body control module (BCM)
The driver information center (DIC)
The rear door lock switch
The door lock relay
The door unlock relay
The liftgate lock relay--utility vehicles with liftgate only
The reversible door lock actuators in each of the doors and liftgate
Door Lock System Controls
The power door lock system can be controlled by any of the following:
A power door lock or unlock switch activation
A keyless entry transmission
An automatic door lock function
A delay lock function
Door lock cylinder switch activation
An airbag deployment
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
You can try taking the door off and opening it up. It doesn't take much experience. It is more time than skill in this instance. If you are nervous, you can bring the car in. An auto locksmith should be able to give you a better idea.
Some vehicle locking systems allow a single button press to unlock the driver's side door and require a second button press to unlock the passenger side door. Likewise, use of the key to unlock the driver's side door does not automatically unlock the passenger side.
You should replace power door lock at front passenger side, you can use any 'universal' power door lock. its an unit with a small motor inside that have a mechanism to up and down according electricity from the actuator (master door lock at driver side)
Hope this help :-)
make sure than you have not split any fluids on the passenger front door most of the times is where the module to control the windows and doors is located, try by unpluging the batterie and the after a minute plug it back and see what happend but if any of your ft doors have been split with liquid or rain has gone inside then most likelly the module got moisture and not working