Remote car starter and automatic door locking mechanism won’t work after crash.

I recently got in a minor car accident. I was driving fast into deep snow, lost control, then my car crashed into a speed sign. The obvious damages were the right signal light, water reservoir, bumper, and right inner fender, which I all patched up. But after, I noticed that my remote starter and my automatic door lock(when I shift to drive, it locks doors, and when I pull keys out, it unlocks doors)both stopped working. I've checked the fuse box and battery and am clueless on what the cause is. Another detail of the crash was that right after the crash, I couldn't start my car, so som
Experienced mechanics share their insights in answering this question :
Hi there. With having the battery cable loose, that caused the computer to reset and lose its memory. I recommend reprogramming the key fob to the vehicle to allow the door locks and ignition to work. First put the key in the door and as you unlock the driver door, push on the unlock button. Do the same for locking the driver door. You will need to do this 3 times and then the key fob should recognize the door locks. Then put the key in the ignition and turn on the power but do not start the engine. Then remove the key and then put it back in and start the engine. Now the key fob should be reprogrammed and should work properly. If you are still having trouble with your key fob not working, then I recommend seeking out a professional, such as one from Your Mechanic, to help you.

How to Identify and Fix Common car Problems ?

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

The key fob battery is dead: This is one of the most common reasons why your car door lock is not working. If your locks aren`t working, replacing the battery in the key fob could solve the issue. The key fob is faulty: If the battery isn`t the problem, the issue may be with the fob itself.
The key fob could have a battery that is going dead. I recommend replacing the battery as the battery only lasts about 8 years. Then you will need to reprogram the key fob to the vehicle by putting it to the ignition switch and pressing the lock and unlock buttons for about 5 seconds.
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.

If the battery dies, the fob chip loses power and will not open or close your car doors. To avoid such frustrations, ensure you are stocked with spare batteries or a backup key. Another major issue in the key fob is misaligned buttons and broken contacts. You can open the key fob to check if it has any issues.
Test your key fob to make sure it`s working properly. If your vehicle doesn`t respond, open the case again and readjust the battery, making sure the connections are clean and they`re making contact with the battery. If the key fob still doesn`t work, you may need to reprogram your Toyota key fob.
With a flat battery, your remote central locking won`t work either, so replace the battery then try again. Alternatively, if there`s a little bit of charge left in the battery, you can try holding it next to your ignition or start button while you turn the key or push the start button.
Wiring Issue: You might try switching the locks up and down or opening and closing the door several times if the locks are not working. If the lock becomes partially functional, it`s a sign that there`s a broken wire that needs to be fixed. Faulty key fob: Batteries are not always the cause of issues with key fobs.
To program your keyless-entry remote, press and hold the “LOCK” and “UNLOCK” buttons on the key fob simultaneously until the locks cycle once more. This could take up to 30 seconds, so be patient.
As you enter or exit the car, the vehicle sends a radio signal to the key fob. The fob responds by relaying its code to the vehicle. The vehicle recognizes this code and unlocks or locks the car doors.
Turn your key in the ignition from “off” to “on,” and repeat within five seconds. Remove your key from the ignition. Within 40 seconds, close and open the driver door twice, and then insert and remove the key from the ignition one more time. Again, be sure to perform steps one and two within 40 seconds.
If the key won`t turn in the door lock, the problem could be dirt or dust in the cylinder causing the pins to be stuck in a partially raised position. If that`s the case, it may be an easy fix. You can spray dry lubricant into the keyway and then insert the key a few times to get the lubricant working.
The key fob battery is dead: This is one of the most common reasons why your car door lock is not working. If your locks aren`t working, replacing the battery in the key fob could solve the issue. The key fob is faulty: If the battery isn`t the problem, the issue may be with the fob itself.
If the key turns but doesn`t lock or unlock the door then this usually means that an internal mechanism has failed. Call a professional locksmith to solve this problem.
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 …
A door lock relay can be located in four different places on a vehicle, including: Under the dash on the wall by the brake pedal. Under the dash in the middle of the cab behind the stereo. Under the dash behind the passenger air bag.
The motor is controlled by an electrical impulse, which may be triggered in a number of ways: by an electronic card reader, by a keypad or by a wireless remote control sensor. Either way, the electronic door lock is configured to start the motor-driven actuator only once it has received the correct electronic input.
Toyota Smart Key® is an innovative key system that employs a high-tech key fob that will allow you to lock or unlock front doors, open the rear liftgate and start your Toyota without ever having to take the key fob out of your pocket.
If only one door isn`t working, there`s likely a problem with a door switch or sensor. If this is the case, you`ll need to have a mechanic take a look at your car. If all of your doors don`t open, you could have a blown fuse.
Factors like the weather, damage to the key, and even a buildup of dirt and grime inside the locking mechanism can all stop a door from locking. If you`re having trouble locking your front door on a regular basis, you should consult a locksmith as soon as possible.
Factors like the weather, damage to the key, and even a buildup of dirt and grime inside the locking mechanism can all stop a door from locking. If you`re having trouble locking your front door on a regular basis, you should consult a locksmith as soon as possible.
Power door locks use electric motors to engage and disengage the door locks on your car. Owners can control their door locks via door- or console-mounted switches or buttons or remotely by a key fob or smartphone app.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Remote car starter and automatic door locking mechanism won’t work after crash.
ANSWER : Hi there. With having the battery cable loose, that caused the computer to reset and lose its memory. I recommend reprogramming the key fob to the vehicle to allow the door locks and ignition to work. First put the key in the door and as you unlock the driver door, push on the unlock button. Do the same for locking the driver door. You will need to do this 3 times and then the key fob should recognize the door locks. Then put the key in the ignition and turn on the power but do not start the engine. Then remove the key and then put it back in and start the engine. Now the key fob should be reprogrammed and should work properly. If you are still having trouble with your key fob not working, then I recommend seeking out a professional, such as one from Your Mechanic, to help you.

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.

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.

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.

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.

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.

Interior lights work but car won’t start and power locks won’t work 97 Honda passport
ANSWER : You possibly have a dead battery. Batteries that are "partly" dead can often still run lights, dash lights and so forth but will not have enough power to run the starter motor and start the car. The very first thing to do is be sure you have a fully, 100% charged battery that passes a load test. If the battery passes a load test be sure it is NOT a marginal pass in which case you should simply install a new battery to reduce diagnostic headaches. Batteries are a VERY important component in a car’s electrical system. Once you have a fully functioning, preferably new battery (fully charged before you leave the store), if the starting system still does not function, there are only a relatively limited number of causes. Broadly, either the starter motor/solenoid assembly is faulty or the electrical circuit supplying the motor has a fault. That circuit begins at the battery and includes grounds, wiring (some of which is very heavy cabling), fuses, relays, the ignition switch and terminations. Basically, the starter is either getting power or it isn’t. If the starter motor is getting power but it doesn’t work, the starter is condemned and replaced. Alternatively, if there is no power to the starter, then the starter circuit is traced until the fault in the circuit is found. Notably, faults can include high resistances, due to corrosion, wire strand breaks, or loose terminals, which can only be diagnosed using a voltage drop test. If you desire that a certified mechanic resolve this promptly, please simply request a no start diagnostic and the responding mechanic will get it diagnosed and repaired for you, including installing a new battery if required. Please let us know if you have further concerns or questions as we are always here to help you.

Car won’t start and key fob won’t open or lock doors even after changing its batteries
ANSWER : Hello. If there was a delay in the engagement of the starter, but it was fine once it did engage, then most of the time this is caused by an issue with the starter relay or the ignition switch. Both of these are common problems in this car. They would have to be diagnosed with a voltage meter as the issue is occurring to know for sure what is going on. As for the door lock, most of the time the lock arm gets caught in the door panel and this occurs. In some cases the panel will need to be removed and trimmed to fix this. If you want to have this delayed start and lock problem fixed, a technician from YourMechanic can come to your home or office to diagnose the starter problem and replace the starter relay or ignition switch if necessary.