- July 23, 2019
- By Emma G
- In Uncategorized
Central locking is the means via which the vehicle doors and
boot lid are locked and unlocked and the engine is started. The locking system
is operated with a key or remote control. This means that they can be triggered
remotely.Today, most vehicle manufacturers only fit a lock which can be
operated with a key in one door, so the car can be unlocked in an emergency.
The very latest systems enable entirely keyless vehicle access. The doors are
then unlocked when the driver touches a door handle which has a built-in
COMPONENTS OF CENTRAL LOCKING SYSTEMS
The locking system comprises the following components:
Door handle/Handle strip
The door handle is the traditional means by which a vehicle
is opened and closed from inside or outside. The external door strip usually
houses the door lock. Door strips are increasingly used as design elements in
The latching mechanism in a vehicle is installed directly in
its doors. It contains both a latch and an electric motor (actuator) which
controls the central locking. The latch opens or closes the doors, whereas the
door lock locks or unlocks the vehicle. Today, all door latches are powered by
Fuel filler cap
The fuel filler cap must securely seal the fuel tank. Some
fuel filler caps have locks, others do not. Fuel filler caps with locks are
usually found on vehicles which have either a fuel filler flap which does not
lock or no fuel filler flap at all. Fuel filler caps without locks are found on
vehicles whose fuel filler flap is locked automatically via the central locking
The transponder is usually integrated inside the key bow. It
is the means by which the electronic immobiliser identifies that the correct
key is being used. The transponder’s code is read out as the key nears the
ignition lock. If the code is correct, the electronic immobiliser sends the start
enable to the engine.
Remote controls are being used with increasing frequency in
small cars, replacing the functions of a conventional key to all intents and
purposes. A signal transmitter sends a signal or a coded order instruction to a
receiver inside the vehicle, which usually controls a number of functions.
Infrared remote controls have a range of up to 15 m. They rely on direct
“visual” contact between transmitter and receiver. Today, infrared
remote controls are only used rarely as they have been overtaken by other
technologies. Wireless remote controls transmit on radio frequencies and have a
range of up to approximately 100 m.
The basic function of keys and remote controls is the
locking and unlocking of doors, luggage compartments, fuel filler caps, etc.
they are also used to control the
- interior lighting
- electronic immobiliser
- alarm system and the
- window lifters.
The keys comprise two units: the milled, toothed key blade
and the key bow. The latter is home to an increasing number of electronic
functions such as the remote control for the central locking system or the boot
Today, keyless systems are increasingly being used to start
engines. In a keyless system, a transmitter – which usually also houses the
controller for the central locking – is inserted into a reader in the vehicle
and the engine is then started by pressing a button. A more recent development
has seen the use of systems that work without any contact at all.
Steering locks have been a mandatory requirement set by
insurance companies since 1969. They provide protection against theft. They are
the means by which the steering column is unlocked and the engine is started –
either electrically or in by conventional mechanical means.
If you have any problems with your central locking
Townsville Mobile Mechanic can help. Call Sandro on 0400401171 or book in
through our website www.townsvillemobilemechanic.com.au