By pressing a button or rocking a switch, you can lock or unlock all of your car’s doors at the same time. Many modern cars also include mechanisms to unlock items like the luggage compartment or the gasoline filler cap door. Modern automobiles also include automated locks that start when the vehicle is placed into gear or reaches a specific speed.

Many cars with electric door lock now incorporate a radio frequency keyless technology that allows you to unlock the vehicle by pressing a switch on a remote key. Many luxury manufacturers now allow you to open or close your windows with the flick of a switch on your remote control.

A car door lock switch is a remote for the actuator. The actuator is a gear-driven reversible motor that operates the door lock. When you push the switch to unlock the doors, the motor reverses direction, and the lock moves in one way. The lock then moves other when you touch the switch to lock the doors.

When you press the door lock switch on an older vehicle, the current passes through a relay to the door lock actuator. However, when you hit the lock switch on a new vehicle, a signal is delivered to a control module. The actuator is then powered by the module, which unlocks the door.

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Symptoms of a Bad Car Door Lock Switch

One thing to keep in mind is that each door has an actuator. As a result, a malfunctioning actuator will only affect one lock. If none of the locks works, the issue is with something else. With that in mind, the most common symptoms of a faulty car door lock switch include:

  • Power door locks not working
  • Power door locks work erratically
  • Strange noises when using power lock
  • Slow door lock operation

How to Replace Car Door Lock Switch?

  • Check the power door locks for functionality.
  • That circuit’s fuse should be checked.
  • Check the relay through its paces.
  • The defective door lock switch should be replaced.
  • Power door locks should be tested for proper operation.

Wrapping Up

The concept of a car door lock switch works great until it doesn’t fail. When the switch breaks, you’ll probably notice one or more symptoms that make your everyday journey less pleasant. If you don’t feel comfortable fixing it yourself, ask one of Swezo certified technicians to help you perform a car door lock switch replacement.

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