Car alarms may prevent theft by sounding a warning signal and/or by a passive engine immobiliser. More complex alarms will have inbuilt sensors that detect movement and glass breakage. Always be sure the siren is connected to all intrusion points (ie doors, bonnet & boot) and is certified by Australian Standards.
A bonnet lock can be fitted onto the existing bonnet release mechanism or as a separate locking device. They are best coupled with an engine immobiliser and will prevent unauthorised entry into the engine compartment. Additionally, door locks may offer added protection by discouraging entry from the outside.
An engine immobiliser can operate automatically (ie. after the engine is switched off) or manually (ie. remote control). There are many types of immobilisers that will isolate the starter, ignition and/or fuel system. They.will only prevent the engine from being started.
Some cars can be fitted with an ignition shield which is designed to cover the ignition lock and wiring. This may prevent the car from being started and driven away.
Steering wheel locks are usually fitted onto the steering wheel to prevent it from turning. There are many types of steering wheel locks on the market and offer only minimal protectection.
Car monitoring devices are useful in tracking your car from the time of theft and recovering it thereafter. Using global satelite technology, the car's approximate position is transmitted digitally to a Central Surveillance Centre. There are many different systems available which offer a variety of features to suit the owner.
