central locking system, locks, actuator, motor assembly, door

My Toyota Etios has a central locking system and some locks don't open unless I pull it or push it manually. What to do?
Experienced mechanics share their insights in answering this question :
The ones that aren’t working, you’ve got to push or pull. The actuator on those doors probably went out. It is a little motor assembly. When you find out how much those stupid little electronic motor assemblies cost, you’ll probably opt to live with it because replacing them is relatively expensive. They cost a lot and you have to take the whole door apart. But if you’d like to have this done, a certified mechanic such as one from YourMechanic can come to your home or office to replace your door’s actuators for you.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The top-end model Toyota Etios Cross X-Edition Diesel comes with safety features like Seat Belt Warning, Child Lock, Anti theft Engine immobilizer, Central Locking. Check similar car details: What safety features are available in Tata Tiago NRG?
Door lock actuators are an electronic component found on vehicles equipped with power door locks. They are the electronically controlled actuators in every single door that are responsible for locking and unlocking the power door locks when the switches are pressed.
These actuators are controlled by the central locking system and/or the remote control. Each actuator`s motor operates a lifter that activates and deactivates the lock. Additionally, the lifter may be retained by a latch mechanism and used specifically for anti-theft protection.
REPLACEMENT DOOR LOCK ACTUATOR – A door latch lock actuator is the component in electronic door locks that is responsible for locking and unlocking the vehicle`s doors.
Central locking works on the basis of key codes and radio waves. In simple terms, the working of a central locking system can be explained like this – The car key acts as a transmitter and the car acts as a receiver. Whenever there is a command from the key, the car would respond to it.
In most cars, the central locking system can be controlled from inside the car, usually via a button insider the driver`s door, or with a key fob.
An actuator is a motor that converts energy into torque which then moves or controls a mechanism or a system into which it has been incorporated. It can introduce motion as well as prevent it. An actuator typically runs on electric or pressure (such as hydraulic or pneumatic).
So what`s the big difference between actuators and motors? Think of actuators as devices that help produce linear motion and motors as devices that help produce rotational movement.
Press and hold the “lock” button on your car remote for one second, then put the key into the ignition, and turn it on.
The blend door actuator in your car is actually a miniature HVAC motor that works in concert with your car`s temperature sensors to operate its climate control system. Any time you turn the dial to send out warm or cool air, the signal passes through the blend door actuator.
Most door lock actuators are integrated into a door latch assembly, and you`ll find one at each door that has a power lock. Some lock actuators are separate from the latch, and they tend to be less expensive.
locking bars on the body pillars, doors, door lock mechanism and dedicated mechanical and electrical parts, electrical components – required to access authorization facility and radio remote control.
The door-lock actuator is the primary mechanism that controls the lock on your car. This actuator is inside of your door, below the insert where your key is inserted. This actuator is connected to the key latch with a thin metal rod.
How does your remote central locking actually work? In simple terms, your remote button sends a signal to the door lock relay, the lock relay activates the lock actuator inside the door, the lock opens and grants access to the vehicle.
Locking systems provide security and control access authorization. Whether in administrative buildings, production plants, public institutions, hospitals, commercial or private buildings, now more than ever security is a top priority in society.
Common examples of actuators include electric motors, stepper motors, jackscrews, electric muscular stimulators in robots, etc.
An actuator is a device that produces a motion by converting energy and signals going into the system. The motion it produces can be either rotary or linear. Electric linear actuators, as the name implies, produce linear motion.
There are various types of actuators, including pneumatic, hydraulic, electric, magnetic and thermal, and mechanical, each with unique advantages and disadvantages.
Electric linear actuators are driven by either an AC or DC motor.
But the most common and flexible types of actuators are hydraulic, pneumatic, and electric actuators.
Electrical DC Motors are continuous actuators that convert electrical energy into mechanical energy. The DC motor achieves this by producing a continuous angular rotation that can be used to rotate pumps, fans, compressors, wheels, etc.
A door locking motor is fitted to each door and connected to a control box located under the fascia in front of the steering wheel. A 20 amp fuse is incorporated to protect the System, see figure 1.
Actuator failure – signs and symptoms

Complete loss of power, causing the vehicle to enter limp mode. Intermittent low pressure. Low boost. Overboost.

The system or actuator filter is blocked or clogged. The actuator ports are plugged with contaminants. The speed controls are closed. There is too much condensation.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

all doors lock only by inserting key in passenger side door and locking
ANSWER : Your central locking system may have been designed with a control module in the circuit. This is a small computer that is responsible for controlling the different functions of a particular system. It is possible that the module for your central locking system may have shorted out internally preventing particular functions from working properly. I would recommend having a certified technician test your central locking module to determine if all of its functions are working properly.

Driver side door lock button not working, and passenger side sliding door makes a buzzing noise
ANSWER : Hi there. These door issues are common on this vehicle. Most of the time the main issue is the master door lock switch on the driver door. It sounds like you already replaced that. As for the sliding door problem, most of the time, this is a failure within the door module or it can be a connection issue.

I typically take the door apart and check the connections on the module and inside of the door just to make sure that there is nothing apparent in there. If the connections and the wiring are fine, then I use a scan tool to check the module to see what the inputs and outputs are doing. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your door problem and recommend a repair.

Driver and Passenger doors won’t lock, but I hear them click and see the locks twitch.
ANSWER : If the same problem is happening even when you use the inside door lock switch then the most likely cause of the locks not moving is going to be weak actuators. You should replace the drivers lock actuator first since it is used the most and you will see it fixes the problem. Then you can replace the other doors as needed.

Having problems with door locks on 08 Cadillac CTS. Driver side door especially and will not lock or unlock with key. Others loc
ANSWER : This is often related to a malfunctioning door lock actuator, a blown fuse or a faulty power door lock switch. When you use the door lock switch in the car it sends a signal to a relay which then activates an actuator inside the door. The actuator is the final step in the process in that it is a small motor with a set of gears that actually locks and unlocks the latch mechanism inside the door allowing the door to open. When this motor is bad, the latch mechanism will fail to operate and cause the door not to unlock as it is designed to. In the case of a bad door lock relay, the power, normally needed to send the signal from the switch when you activate it to the actuator motor is not there. This means the relay is not allowing the circuit to be completed and the actuator motor is not activated. Any of the above may cause your power door lock switches not to work properly and should be diagnosed by a qualified mechanic. I would suggest having a professional from YourMechanic come to your location to take a look at the door locks in your vehicle.

central locking system, locks, actuator, motor assembly, door
ANSWER : The ones that aren’t working, you’ve got to push or pull. The actuator on those doors probably went out. It is a little motor assembly. When you find out how much those stupid little electronic motor assemblies cost, you’ll probably opt to live with it because replacing them is relatively expensive. They cost a lot and you have to take the whole door apart. But if you’d like to have this done, a certified mechanic such as one from YourMechanic can come to your home or office to replace your door’s actuators for you.

Front Passenger Lock sometimes does not lock with a remote control or by locking button located on either doors.
ANSWER : The solenoid is on the door latch and is most likely the cause of the problem for your 2005 Toyota Tacoma. If you want to have this inspected and repaired, a certified technician from YourMechanic can come to your home or office to diagnose your door lock and perform the correct replacement.

Doors wont lock or unlock with fob or switch?
ANSWER : Hello. Further testing should be done to help solve your problem. Being that the door unlock reprogramming procedure has already been done and the fuses have been checked there’s not much left it could be. When you hit the unlock button you should hear a little noise in each of the doors. If you hear the noise that means that the motor inside of the door actuator is working therefore it is likely the actuator itself as the problem. Though if you do not hear any noise that means it is likely the motor inside of the actuator. The actuator motors are very common failure on Lexus. The Lexus Community is almost an uproar because the a L in Lexus should also stand for luxury but there have been widespread simple problems reported such as this. A technician such as those we have here at yourmechanic will be able to diagnose your door lock issue for you firsthand. But if you consider following the test I suggested that should help you narrow down to a solution as well.

It may also be a beneficial to take a door panel off and probe a multi meter to the door actuator connectors to ensure they are receiving the proper power and ground when the buttons are pressed. If they are that only leaves two things that can be at fault. The door actuator or the motor inside of the door actuator.

Problem with the central door lock – 2006 Mercedes-Benz B200
ANSWER : Hello. The inner door panel will have to be removed before the actuator can be removed properly. There are also connection rods to the actuator that need to be removed as well. My suggestion would be to have a certified technician, like one from YourMechanic, who can assist you with replacing the door lock actuator at your home or office.