Inside driver side and passenger side door locks do not work and that is the only way that I can lock my car.
How can I fix my door locks? The inside driver side and passenger side door locks do not work when I push the button and they make no sound. I do not have a lock on my key fob so the only way to lock my car is on my door. I checked my fuses but none of them are burned out. What else should I check?
My car has an automatic transmission.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
You may have two bad latch door lock actuators. The only way to tell is to take the door panel off and test the actuator to see if they are getting power and move freely. This is a very common problem and a mechanic can remove the door panels and test the locks out for you.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
A blown fuse is the common hurdle in locking doors properly. Car doors rely on this fuse`s command to lock or unlock. The fuse is usually located under the glove box (passenger`s side) and can get blown due to high voltage. The fuse is cheaper and can be easily replaced at home.
The Power Locks Don`t Work
A problem with one lock is probably due to the lock actuator or another malfunction inside the mechanism of the door itself. But if none of the power locks work, check the fuse box in your vehicle. A blown fuse can cause the power locks to stop working.
A fuse is blown: If one door doesn`t work, but others do, the problem could be a blown fuse. Replacing the fuse will correct the problem. This is a cheap and easy fix. The solenoid is bad: Again, if one door doesn`t work, but others do, the problem could be with the door lock solenoid.
On many modern vehicles, the lock actuators are monitored by electronic controls (such as the body control module) that have to receive the correct antitheft code from a key fob transmitter before they`ll send electrical current to unlock the doors.
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.
The solenoid lock denotes a latch for electrical locking and unlocking. It is available in unlocking in the power-on mode type, and locking and keeping in the power-on mode type, which can be used selectively for situations. The power-on unlocking type enables unlocking only while the solenoid is powered on.
The door control module (DCM), also called a door control unit (DCU), is a type of automotive electronic that provides intelligent control for vehicle doors, and their peripheral electric parts and components, that enable features such as power windows, anti-pinch technology, central door locking, rearview mirror …
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.
For safety/security reasons, the single button push opens only the drivers door. This is to avoid the chance that someone hiding on the opposite side of the car could hop in simultaneous with you. The 2nd push of the same button is to unlock the other doors, and the external trunk/hatch lock as well.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
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.
Inside driver side and passenger side door locks do not work and that is the only way that I can lock my car.
ANSWER : You may have two bad latch door lock actuators. The only way to tell is to take the door panel off and test the actuator to see if they are getting power and move freely. This is a very common problem and a mechanic can remove the door panels and test the locks out for you.
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 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.
My window on my passenger side won’t roll down and the lock button doesn’t lock the doors.
ANSWER : Hello, thank you for writing in. Your issue is most likely a switch. The window motor would not effect the door lock functions. The only true way to know is to test the power available to the switch and see if it is passing through, or making it to the motor. Where the power stops and is not utilized, is the component that has failed. If the power supply is not making it to the switch, then you have another wiring or fuse issue. Without doing some electrical testing, you may want to start with replacing the switch. For more help with diagnosis and resolving the issue, contact our service department to schedule an appointment.
After unlocking the car from the drivers side, if the passenger door is opened before the key is put in the car the alarm goes off.
ANSWER : The key should only unlock the driver door with one turn and unlock all of the doors with two turns. If the passenger door is unlocking when the driver door is turned with one turn or if the alarm is still set if the driver door is turned two times, then the Immobilizer System Module needs replaced if you are intending on not using a key fob or you will need to get a key fob to manually turn off the Immobilizer System Module. If you need further assistance with your doors unlocking unusual, then seek out a professional, such as one from Your Mechanic, to help you.
power door lock on drivers side not working
ANSWER : Hi there. It really depends on what is actually damaged which would determine the ballpark estimate for repairs. This type of problem can be as simple as a broken fuse or electrical relay or as complex as a damaged power window motor or broken door latch. Repair costs can range from $60.00 to $400 or more. The best way to have this issue correctly diagnosed is to have a professional mobile mechanic come to your location and complete a door will not open inspection.
