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Power door locks (also known as electric door locks or central locking) allow the driver or front passenger to simultaneously lock or unlock all the doors of an automobile or truck, by pressing a button or flipping a switch. Power door locks were introduced on the luxury Scripps-Booth in 1914, but were not common on luxury cars until Packard ...
In automotive electronics, a door control unit (DCU) is a generic term for an embedded system that controls a number of electrical systems associated with an advanced motor vehicle. A modern motor vehicle contains a number of ECUs ( electronic control units ), and the door control unit (DCU) is one of the minor ones.
Some cars feature a passive keyless entry system. Their primary distinction is the ability to lock/unlock (and later iterations allow starting) the vehicle without any input from the user. General Motors pioneered this technology with the Passive Keyless Entry (PKE) system in the 1993 Chevrolet Corvette.
In the latter, the switch is between the seats, preventing damage to the driver's knee in the event of a collision. Keyless entry systems, which use a door-mounted keypad, key fob, a wireless-enabled handheld computing device (e.g., smartphone or tablet), or a remote control in place of a toothed key, have become a standard feature on most new ...
Exterior side of car door on a 1986 Ford Taurus Opened front and rear doors on a 1957 Rambler Rebel. A car door is a type of door opening, typically hinged on its front edge, but sometimes attached by other mechanisms such as tracks, for entering and exiting a vehicle. Doors most often integrate side windows for visibility from inside the car ...
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Depending on the system, the vehicle is automatically unlocked when a button or sensor on the door handle or trunk release is pressed. Vehicles with a smart-key system have a mechanical backup, usually in the form of a spare key blade supplied with the vehicle. Some manufacturers hide the backup lock behind a cover for styling.
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