{{Unsourced, date=September 2014 In

automotive electronics Automotive electronics are electronic systems used in vehicles, including engine management, ignition, radio, carputers, telematics, in-car entertainment systems, and others. Ignition, engine and transmission electronics are also found in truc ...

, a door control unit (DCU) is a generic term for an

embedded system An embedded system is a computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is ''embedded'' ...

that controls a number of electrical systems associated with an advanced

motor vehicle A motor vehicle, also known as motorized vehicle or automotive vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on rails (such as trains or trams) and is used for the transportation of people or cargo. The ...

. A modern motor vehicle contains a number of ECUs (

electronic control unit An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle. Modern vehic ...

s), and the door control unit (DCU) is one of the minor ones. The door control unit is responsible for controlling and monitoring various electronic accessories in a vehicle's door. Since most of the vehicles have more than one door, DCUs may be present in each door separately, or a single centralised one provided. A DCU associated with the driver's door has some additional functionalities. This additional features are the result of complex functions like locking, driver door switch pad, child lock switches, etc., which are associated with the driver's door. In most of the cases driver door module acts as a master and others act as slaves in communication protocols.

Features controlled by Door Control Units

* Manual window movements * Automatic window movements * Global Open-Close functionality * Child lock safety feature * Mirror folding * Mirror adjustment * Door lock and unlocking control (latches) In some advanced motor vehicles, luxury features like puddle lamps and BLIS (Blind spot Indicator System) are also supported by DCUs. Automotive electronics