TPMS receiver
WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara and 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
The function of keyless entry receiver is included in TPMS receiver.
The TPMS receiver receives the data from the tire pressure sensor, converts it from the analog signal to the digital signal and transmits it to BCM.