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System overview: General

Fig 1: Electrical Modules
GLL148506Courtesy of VOLVO CARS OF NORTH AMERICA.

The central locking system includes a number of functions. The main unit of the system is the rear electronic module (REM) (4/58). The rear electronic module (REM) communicates with the internal components both via direct connections and the CAN network.

The functions covered are: 

After the battery has been disconnected the central locking system must be initialized. This can be performed by locking and unlocking once with the key in the driver's door or with the remote control. This is performed to ensure that the status for lock motors and doors is operative.

The locking function on the vehicle at delivery depends on the market and is stored in the vehicle's configuration file, which is stored in the central electronic module (CEM). The configuration can be read via VIDA Vehicle communication.