Car deadlocks
Car deadlocks prevent a car door unlocking from inside the car. The deadlock stops the internal lock button from unlocking the doors and disables the internal door handle from being able to open the car.
This can be great from a security perspective as the door remain locked even if someone smashes a window and then attempts to open a door.
Testing your car to see if it has deadlocks
The easiest way to test if your car has factpory deadlocking is to leave the driver door window open and lock the car with the remote. Wait for 60 seconds, then reach in an see if the door opens when you pull the internal door handle. If this does not work, then press the internal unlock button, or move the lock plunger, then try to open the door.
Repeat the same process again after double-pressing the remote lock button.
If the windows roll up with the lock button, then you may have to do the test sitting inside the car.
Aftermarket alarms that support double locking
Some aftermarket car alarms can generate a double-lock pulse that will active a vehicle’s deadlock system.
If the alarm has “double locking” listed as an option, then it means the alarm can activate the cars deadlock with a single press of the remote lock button.
Double-lock pulse generator
For alarms that do not support double locking a 452T door lock pulse generator can be added to the alarm. I keep these in stock.
