How to Fix A Car Door Lock Cylinder By Yourself!

Car Door Lock Cylinder

Your car’s door lock cylinders are not simply meant to keep you and your family safe while you’re inside. They also prevent theft of the actual vehicle.

The latch mechanism on the door should lock or unlock whenever you turn the key in the driver’s or passenger’s side door. It may be challenging to lock or unlock, though, if the cylinder is worn out. Extreme circumstances may result in the cylinder failing to release the key or in the key breaking off inside the door. The following article shows how to Fix A Car Door Lock Cylinder By Yourself.

Supplies Required

  1. Ratchet with both standard and metric sockets
  2. Screwdriver with a cross-tip or Phillips head
  3. Remover for door panels
  4. Philips screwdriver
  5. Sharp-nosed pliers
  6. Customized to your vehicle, a new door lock cylinder
  7. Set of torques
  8. A wheel chock


Part 01/04: Checking The Door Lock Cylinder’s Condition

Step 1: 

Determine which door has the problematic door lock cylinder. Look for any outside damage on the broken, stuck, or damaged door lock cylinder.

Check for any binding of the door’s mechanism by lifting up on the handle of the door. This demonstrates that the door’s internal linkages have not broken; rather, the lock cylinder has.

You may also contact car key replacement in Elmwood park. This agency offers the best services.

Step 2: 

Open the impacted door by unlocking it. If the door you are working on won’t open, enter the car through a different door. Using the broken, jammed, or damaged door lock cylinder from the inside of the car, unlock and open the door.

Step 3: 

Test the affected door by manually locking it. By depressing the latch on the side of the door, you can lock it. By inserting the key into the lock and rotating it to unlock the door, try to operate the broken lock cylinder.

Part 02/05: Getting The Car Ready

Step 01:

First, find a flat, solid area to park your car. Your car cannot be on an inclination so that you may work on it safely. Look for a flat, sturdy surface to work on.

Step 02: 

Secure the tires with wheel chocks. To prevent the tires from moving, set the parking brake and secure the wheels using wheel chocks.

Step 03:

Install a nine-volt battery saver. You must unplug the automobile battery if your car has electronic door locks. In your cigarette lighter, first, insert a nine-volt battery saver.

This will keep your computer active and your vehicle’s settings up to date. But it’s okay if you don’t have a nine-volt battery saver.

Step 04:

Disconnect the battery. To turn off the power to the air-to-fuel ratio sensor, open the bonnet of your car and remove the ground line from the battery’s negative post.

Advice: If you possess a hybrid car, see the owner’s manual for directions on how to just disconnect the little battery.

Close the hood after you have finished unplugging the battery.

Part 03/04: Installing The Replacement Of Door Lock Cylinder

Step 01:

The new door lock cylinder should first be assembled. Put the rubber gasket on the portion of the cylinder that fits on the exterior of the car door to assemble the new door lock cylinder similarly to the previous one.

To hold the gasket in place, press the new little bracket onto the cylinder.

Step 02:

Insert the replacement lock assembly. Align the cylinder slot with the door’s hole before inserting the entire lock assembly.

Step 03:

Connect the door lock cylinder. In order to keep the door lock cylinder tightly fastened to the inside of the door, replace the large bracket.

Step 04:

Install the component that joins the cylinder to the lock indicator stem. Push the three tiny tabs down with needle nose pliers, then fasten the final smaller bracket to the underside of the cylinder.

Step 05:

Replace the barrier. Reinstall the plastic sheeting against the back of the door and seal it again.

Step 06: 

Swap out the door panel. the window crank’s hidden spring to be reinstalled, after which the entire panel should be placed directly onto the door and slid over the locking knob. Don’t move the spring. Panel clips should be inserted into the door’s holes and then firmly tapped into place.

Step 07: 

If necessary, reinstall the door lock cluster panel. You must reinstall the door lock cluster panel inside the door if your car has electronic door locks.

Make that the cluster is linked to the wire harness after installing the screws that secure it to the panel. Before replacing the door panel onto the door, you might need to fasten the connectors underneath.

Step 8: 

If necessary, replace any speakers that are installed outside. If the car has externally mounted bespoke speakers on the door panel, these speakers will need to be reinstalled.

Step 09:

Reinstall the window crank. Reinstall the plastic cover after positioning the handle with the large plastic washer.

The screws holding the handle to the shaft should be secured by reinstalling them. Make sure the window can rise and fall by turning the window crank. The plastic rim for the handle should be installed.

Step 10:

Install the exterior door handle. To remove and insert the handle into the door, pull it forward. The two screws that will secure the door handle to the door shell should be installed.

You can contact any automotive locksmith in Hillside to fix a car door lock cylinder.

Part 04/04: Reconnecting The Battery And Testing The Cylinder

Step 01:

Reconnect the battery. Reconnect the ground cable to the battery’s negative post by opening the hood of the car. To make sure the connection is solid, tighten the battery clamp all the way.

Step 02:

Test the new door lock cylinder. By locking and unlocking the door with your key, you may check the new door lock cylinder.

It can be locked and unlocked both with the door open and closed. This guarantees that the door latch’s connection with the door lock cylinder is functional.


We hope that we have answered your query about how to fix a car door lock cylinder by yourself. The process is not difficult, however, it can be long.

Also Read: Complete Working Of A Ducted Heating System

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