Body Control Systems: Description and Operation

GENERAL INFORMATION

The wireless control module (WCM) is a system that integrates the keyless entry function with which remote operation (opening/closing of all doors, opening of liftgate, and warning function to warn a person who intends to damage the vehicle*) can be performed by operating the lock/unlock button or panic button on the ignition key (transmitter). Also, WCM incorporates the immobilizer function, which prohibits the starting of engine using an unauthorized key, and the tire pressure monitoring system (TPMS), which issues a warning to a driver by illuminating or flashing the warning light if an abnormality to the tire pressure or system is detected. WCM has the following features:
- The ignition key has an indicator light that enables the driver to check if the signal is transmitted correctly or if the battery in the key is discharged.
- Each vehicle is provided with two ignition keys, and up to eight ignition keys can be registered.
- Settings of the keyless entry function can be adjusted using a customization function.

NOTE: *: Horn sounds, and headlights and taillights flash.

CONSTRUCTION DIAGRAM

Construction Diagram:

Main components and functions







System configuration

System Configuration:

NOTE: In case of replacement of WCM, all keyless ID, key ID and tire pressure sensor ID should be re-registered using scan tool MB991958 (M.U.T.-III sub-assembly).