Q:

How does central locking work?

A:

Central locking systems work through the use of a central computer in the car called a "body controller," which relays signals to the locks of the vehicle and monitors whether they are locked or unlocked. This system is a form of power door locks.

Each car door has an apparatus called an actuator, which consists of a series of gears and a latch connected to a rod. The central computer sends power to the actuator, causing the gears to rotate, which causes the latch to either attach or detach itself from the car door, locking or unlocking it.

In modern vehicles, the central locking computer in the car can send signals to all the actuators at once, such as when a remote control device for keyless entry is used or a button inside the car is pressed. When the actuators receive the "lock" or "unlock" signals, they attach or detach their latches accordingly. This central computer is also responsible for determining whether the lights were left on or whether you left your keys in the ignition.

In vehicles with power lock systems but without a central computer, the locking mechanisms are activated by providing power to the actuators directly, over a timed interval.


Is this answer helpful?

Similar Questions

  • Q:

    How do you know if you have a bad ECU computer in your car?

    A:

    A bad electronic control unit often signals the driver by causing the check engine light to remain illuminated. This light comes on for a wide variety of reasons. When an automotive shop is diagnosing problems, its mechanics will generally retrieve the stored codes from the ECU using a scan tool.

    Full Answer >
  • Q:

    Why does my car shake when I slow down?

    A:

    CarsDirect.com explains that when a vehicle shakes as it slows down and the brakes are applied, worn brake rotors or unevenly worn pads are likely culprits. According to the source, excessive wear on the rotors and the amounts of heat generated during braking alter the shape of the rotor turning a normally flat surface into one with smalls peaks and valleys.

    Full Answer >
  • Q:

    What is a CC in a car?

    A:

    A catalytic converter, or CC, on a car works to take the harmful compounds that a vehicle puts out and it converts them into harmless compounds. It works to convert carbon monoxide, hydrocarbons and nitrogen oxides.

    Full Answer >
  • Q:

    What can you do if you lock my keys inside your car?

    A:

    If an individual locks his keys inside his vehicle, he can take a variety of actions including calling for roadside assistance, calling a tow truck, calling a locksmith, calling someone to pick up the extra set of keys or attempting to open the door himself. If the vehicle is equipped with a telematics system such as OnStar, a toll-free number can be dialed to have the vehicle remotely unlocked.

    Full Answer >

Explore